Pub Date : 2024-02-07DOI: 10.1177/09544089231224888
Dantong Li, Zhilong He, Kai Ma, Chongzhou Sun, Ziwen Xing
This paper introduced a novel design and optimization method of the Roots profile to enhance the performance of helical Roots blowers in Hydrogen Fuel Cell Vehicle applications. The proposed profile was generated based on defined meshing curves, and thus the shape of meshing curves can be explicitly optimized. First, the mathematical models for Roots profile generation based on meshing curves were presented. Next, the influence of the shape of meshing curves on the geometric performance of Roots rotors was investigated, and the meshing curve was further optimized using a genetic algorithm. Finally, the CFD method was employed to identify the specific performance enhancement brought by the optimized Roots profile. Results showed that the proposed profile design method could flexibly adjust the shape of meshing curves so as to intuitively control the spatial leakage channels formed by helical rotors. The optimized profile boosted the volumetric and adiabatic efficiency of the Roots blower up to 2.87%, and 1.89%, respectively, compared to the original one. The leakage analysis indicated that the performance improvement was attributed to the reduction of the leakage rate caused by the blow-hole and contact line. The conclusions obtained could effectively support the development of high-efficiency helical Roots blowers.
{"title":"Rotor profile improvement by optimizing meshing curve for helical roots blowers in HFCV application","authors":"Dantong Li, Zhilong He, Kai Ma, Chongzhou Sun, Ziwen Xing","doi":"10.1177/09544089231224888","DOIUrl":"https://doi.org/10.1177/09544089231224888","url":null,"abstract":"This paper introduced a novel design and optimization method of the Roots profile to enhance the performance of helical Roots blowers in Hydrogen Fuel Cell Vehicle applications. The proposed profile was generated based on defined meshing curves, and thus the shape of meshing curves can be explicitly optimized. First, the mathematical models for Roots profile generation based on meshing curves were presented. Next, the influence of the shape of meshing curves on the geometric performance of Roots rotors was investigated, and the meshing curve was further optimized using a genetic algorithm. Finally, the CFD method was employed to identify the specific performance enhancement brought by the optimized Roots profile. Results showed that the proposed profile design method could flexibly adjust the shape of meshing curves so as to intuitively control the spatial leakage channels formed by helical rotors. The optimized profile boosted the volumetric and adiabatic efficiency of the Roots blower up to 2.87%, and 1.89%, respectively, compared to the original one. The leakage analysis indicated that the performance improvement was attributed to the reduction of the leakage rate caused by the blow-hole and contact line. The conclusions obtained could effectively support the development of high-efficiency helical Roots blowers.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"76 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139855465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-07DOI: 10.1177/09544089241228947
R. Manoj Samson, T. Deepan Bharathi Kannan, C. Shravan Kumar
This research aims to analyze the welding of 1 mm thick NiTinol sheets using an autogenous double pulse tungsten inert gas (DPTIG) welding process. The effect of heat input (HI) on bead geometry, microstructure, hardness, tensile strength, phase transformation temperature (PTT), and corrosion behavior was studied. The lower (111.25 J/mm), and higher (120.14 J/mm) HI produced an average grain size of 26 μm and 36 μm, respectively. The microstructure of the fusion zone (FZ) had coarser columnar grains with intermetallic phases such as Ni3Ti, and TiO2. The grain size in the FZ increased with the increase in HI. Sample P (111.25 J/mm) showed a higher hardness of 280.54 HV and tensile strength of 566 MPa due to a higher proportion of austenite phase (99.4%), the smaller grain size of 26 µm, a larger fraction of high angle grain boundary (HAGB) of 75.8%, and higher kernel average misorientation (KAM) value of 4.93. Compared to base metal (BM), sample P (111.25 J/mm), and sample S (120.14 J/mm) exhibited a reduction in tensile strength of 19.14% and 32.29%, respectively. The decline in hardness and tensile strength was attributed to the formation of intermetallic phases, a decrease in the Ti/Ni ratio, coarser grain formation, and a decrease in HAGB fraction and KAM values. The fractured tensile samples showed a mixed mode of fracture with dimples and cleavage facets. Compared to BM, Sample Q (118.05 J/mm) exhibited lesser variation in temperature hysteresis values for austenite and martensite temperatures, with a deviation of 0.4°C and 3.1°C, respectively. All the welded samples had better corrosion behavior than the BM due to a higher Ti/Ni ratio.
{"title":"The effect of heat input on weld-bead geometry, mechanical, phase transformation temperature, and corrosion properties of autogenous double pulse TIG welded nitinol sheets","authors":"R. Manoj Samson, T. Deepan Bharathi Kannan, C. Shravan Kumar","doi":"10.1177/09544089241228947","DOIUrl":"https://doi.org/10.1177/09544089241228947","url":null,"abstract":"This research aims to analyze the welding of 1 mm thick NiTinol sheets using an autogenous double pulse tungsten inert gas (DPTIG) welding process. The effect of heat input (HI) on bead geometry, microstructure, hardness, tensile strength, phase transformation temperature (PTT), and corrosion behavior was studied. The lower (111.25 J/mm), and higher (120.14 J/mm) HI produced an average grain size of 26 μm and 36 μm, respectively. The microstructure of the fusion zone (FZ) had coarser columnar grains with intermetallic phases such as Ni3Ti, and TiO2. The grain size in the FZ increased with the increase in HI. Sample P (111.25 J/mm) showed a higher hardness of 280.54 HV and tensile strength of 566 MPa due to a higher proportion of austenite phase (99.4%), the smaller grain size of 26 µm, a larger fraction of high angle grain boundary (HAGB) of 75.8%, and higher kernel average misorientation (KAM) value of 4.93. Compared to base metal (BM), sample P (111.25 J/mm), and sample S (120.14 J/mm) exhibited a reduction in tensile strength of 19.14% and 32.29%, respectively. The decline in hardness and tensile strength was attributed to the formation of intermetallic phases, a decrease in the Ti/Ni ratio, coarser grain formation, and a decrease in HAGB fraction and KAM values. The fractured tensile samples showed a mixed mode of fracture with dimples and cleavage facets. Compared to BM, Sample Q (118.05 J/mm) exhibited lesser variation in temperature hysteresis values for austenite and martensite temperatures, with a deviation of 0.4°C and 3.1°C, respectively. All the welded samples had better corrosion behavior than the BM due to a higher Ti/Ni ratio.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"51 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139796938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-07DOI: 10.1177/09544089241228947
R. Manoj Samson, T. Deepan Bharathi Kannan, C. Shravan Kumar
This research aims to analyze the welding of 1 mm thick NiTinol sheets using an autogenous double pulse tungsten inert gas (DPTIG) welding process. The effect of heat input (HI) on bead geometry, microstructure, hardness, tensile strength, phase transformation temperature (PTT), and corrosion behavior was studied. The lower (111.25 J/mm), and higher (120.14 J/mm) HI produced an average grain size of 26 μm and 36 μm, respectively. The microstructure of the fusion zone (FZ) had coarser columnar grains with intermetallic phases such as Ni3Ti, and TiO2. The grain size in the FZ increased with the increase in HI. Sample P (111.25 J/mm) showed a higher hardness of 280.54 HV and tensile strength of 566 MPa due to a higher proportion of austenite phase (99.4%), the smaller grain size of 26 µm, a larger fraction of high angle grain boundary (HAGB) of 75.8%, and higher kernel average misorientation (KAM) value of 4.93. Compared to base metal (BM), sample P (111.25 J/mm), and sample S (120.14 J/mm) exhibited a reduction in tensile strength of 19.14% and 32.29%, respectively. The decline in hardness and tensile strength was attributed to the formation of intermetallic phases, a decrease in the Ti/Ni ratio, coarser grain formation, and a decrease in HAGB fraction and KAM values. The fractured tensile samples showed a mixed mode of fracture with dimples and cleavage facets. Compared to BM, Sample Q (118.05 J/mm) exhibited lesser variation in temperature hysteresis values for austenite and martensite temperatures, with a deviation of 0.4°C and 3.1°C, respectively. All the welded samples had better corrosion behavior than the BM due to a higher Ti/Ni ratio.
{"title":"The effect of heat input on weld-bead geometry, mechanical, phase transformation temperature, and corrosion properties of autogenous double pulse TIG welded nitinol sheets","authors":"R. Manoj Samson, T. Deepan Bharathi Kannan, C. Shravan Kumar","doi":"10.1177/09544089241228947","DOIUrl":"https://doi.org/10.1177/09544089241228947","url":null,"abstract":"This research aims to analyze the welding of 1 mm thick NiTinol sheets using an autogenous double pulse tungsten inert gas (DPTIG) welding process. The effect of heat input (HI) on bead geometry, microstructure, hardness, tensile strength, phase transformation temperature (PTT), and corrosion behavior was studied. The lower (111.25 J/mm), and higher (120.14 J/mm) HI produced an average grain size of 26 μm and 36 μm, respectively. The microstructure of the fusion zone (FZ) had coarser columnar grains with intermetallic phases such as Ni3Ti, and TiO2. The grain size in the FZ increased with the increase in HI. Sample P (111.25 J/mm) showed a higher hardness of 280.54 HV and tensile strength of 566 MPa due to a higher proportion of austenite phase (99.4%), the smaller grain size of 26 µm, a larger fraction of high angle grain boundary (HAGB) of 75.8%, and higher kernel average misorientation (KAM) value of 4.93. Compared to base metal (BM), sample P (111.25 J/mm), and sample S (120.14 J/mm) exhibited a reduction in tensile strength of 19.14% and 32.29%, respectively. The decline in hardness and tensile strength was attributed to the formation of intermetallic phases, a decrease in the Ti/Ni ratio, coarser grain formation, and a decrease in HAGB fraction and KAM values. The fractured tensile samples showed a mixed mode of fracture with dimples and cleavage facets. Compared to BM, Sample Q (118.05 J/mm) exhibited lesser variation in temperature hysteresis values for austenite and martensite temperatures, with a deviation of 0.4°C and 3.1°C, respectively. All the welded samples had better corrosion behavior than the BM due to a higher Ti/Ni ratio.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"76 19-20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139856786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-07DOI: 10.1177/09544089241229563
Amar Kumar Das, Taraprasad Mohapatra
Due to the fast depletion of fossil fuels, enormous concerns about environmental pollution, and advocacy for waste-to-energy drives from the global perspective, compression ignition engines need a sustainable alternative fuel source. Enormous plastic wastes were generated in health sectors, particularly during post-pandemic. In this context, the study intends to introduce a reasonable solution for such waste plastics recycling by converting them into liquid oil by pyrolysis followed by the distillation process. Distilled waste plastic oil (DPO) extracted from medical plastic waste is a potential alternative diesel source. The performance of the engine significantly increases when nanographene is added with DPO/diesel blends, which act as a combustion improviser. The energy efficiency (η1), exergy efficiency (η2), and brake-specific fuel consumption (BSFC), which are regarded as key performance indicators, exhibited promising results when operated with 20% DPO +100 ppm nanographene (20DPO100G) emulsified fuel mixture as compared to normal diesel. When compared to diesel and other fuel combinations, the energy efficiency (η1) and exergy efficiency (η2) for 20DPO100G fuel mixture were found enhanced by 5.78% and 10.9%, respectively, and lowest by 14.7% for BSFC in comparison to diesel. The optimum energy efficiency, exergy efficiency, and minimum BSFC were obtained for the test engine from response surface methodology multi-objective optimization analysis as 31.44%, 22.12%, and 0.32 kg/kW-hr, respectively, for the composite desirability, D of 0.974. The 100 ppm nanographene emulsified distilled waste plastic pyrolysis oil and diesel blend has the lowest relative cost variation of −14.583.
{"title":"Exergetic performance optimization and thermoeconomic analysis of a variable compression ratio diesel engine fueled with distilled plastic oil and diesel doped with nanographene","authors":"Amar Kumar Das, Taraprasad Mohapatra","doi":"10.1177/09544089241229563","DOIUrl":"https://doi.org/10.1177/09544089241229563","url":null,"abstract":"Due to the fast depletion of fossil fuels, enormous concerns about environmental pollution, and advocacy for waste-to-energy drives from the global perspective, compression ignition engines need a sustainable alternative fuel source. Enormous plastic wastes were generated in health sectors, particularly during post-pandemic. In this context, the study intends to introduce a reasonable solution for such waste plastics recycling by converting them into liquid oil by pyrolysis followed by the distillation process. Distilled waste plastic oil (DPO) extracted from medical plastic waste is a potential alternative diesel source. The performance of the engine significantly increases when nanographene is added with DPO/diesel blends, which act as a combustion improviser. The energy efficiency (η1), exergy efficiency (η2), and brake-specific fuel consumption (BSFC), which are regarded as key performance indicators, exhibited promising results when operated with 20% DPO +100 ppm nanographene (20DPO100G) emulsified fuel mixture as compared to normal diesel. When compared to diesel and other fuel combinations, the energy efficiency (η1) and exergy efficiency (η2) for 20DPO100G fuel mixture were found enhanced by 5.78% and 10.9%, respectively, and lowest by 14.7% for BSFC in comparison to diesel. The optimum energy efficiency, exergy efficiency, and minimum BSFC were obtained for the test engine from response surface methodology multi-objective optimization analysis as 31.44%, 22.12%, and 0.32 kg/kW-hr, respectively, for the composite desirability, D of 0.974. The 100 ppm nanographene emulsified distilled waste plastic pyrolysis oil and diesel blend has the lowest relative cost variation of −14.583.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"5 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139854876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-07DOI: 10.1177/09544089241229563
Amar Kumar Das, Taraprasad Mohapatra
Due to the fast depletion of fossil fuels, enormous concerns about environmental pollution, and advocacy for waste-to-energy drives from the global perspective, compression ignition engines need a sustainable alternative fuel source. Enormous plastic wastes were generated in health sectors, particularly during post-pandemic. In this context, the study intends to introduce a reasonable solution for such waste plastics recycling by converting them into liquid oil by pyrolysis followed by the distillation process. Distilled waste plastic oil (DPO) extracted from medical plastic waste is a potential alternative diesel source. The performance of the engine significantly increases when nanographene is added with DPO/diesel blends, which act as a combustion improviser. The energy efficiency (η1), exergy efficiency (η2), and brake-specific fuel consumption (BSFC), which are regarded as key performance indicators, exhibited promising results when operated with 20% DPO +100 ppm nanographene (20DPO100G) emulsified fuel mixture as compared to normal diesel. When compared to diesel and other fuel combinations, the energy efficiency (η1) and exergy efficiency (η2) for 20DPO100G fuel mixture were found enhanced by 5.78% and 10.9%, respectively, and lowest by 14.7% for BSFC in comparison to diesel. The optimum energy efficiency, exergy efficiency, and minimum BSFC were obtained for the test engine from response surface methodology multi-objective optimization analysis as 31.44%, 22.12%, and 0.32 kg/kW-hr, respectively, for the composite desirability, D of 0.974. The 100 ppm nanographene emulsified distilled waste plastic pyrolysis oil and diesel blend has the lowest relative cost variation of −14.583.
{"title":"Exergetic performance optimization and thermoeconomic analysis of a variable compression ratio diesel engine fueled with distilled plastic oil and diesel doped with nanographene","authors":"Amar Kumar Das, Taraprasad Mohapatra","doi":"10.1177/09544089241229563","DOIUrl":"https://doi.org/10.1177/09544089241229563","url":null,"abstract":"Due to the fast depletion of fossil fuels, enormous concerns about environmental pollution, and advocacy for waste-to-energy drives from the global perspective, compression ignition engines need a sustainable alternative fuel source. Enormous plastic wastes were generated in health sectors, particularly during post-pandemic. In this context, the study intends to introduce a reasonable solution for such waste plastics recycling by converting them into liquid oil by pyrolysis followed by the distillation process. Distilled waste plastic oil (DPO) extracted from medical plastic waste is a potential alternative diesel source. The performance of the engine significantly increases when nanographene is added with DPO/diesel blends, which act as a combustion improviser. The energy efficiency (η1), exergy efficiency (η2), and brake-specific fuel consumption (BSFC), which are regarded as key performance indicators, exhibited promising results when operated with 20% DPO +100 ppm nanographene (20DPO100G) emulsified fuel mixture as compared to normal diesel. When compared to diesel and other fuel combinations, the energy efficiency (η1) and exergy efficiency (η2) for 20DPO100G fuel mixture were found enhanced by 5.78% and 10.9%, respectively, and lowest by 14.7% for BSFC in comparison to diesel. The optimum energy efficiency, exergy efficiency, and minimum BSFC were obtained for the test engine from response surface methodology multi-objective optimization analysis as 31.44%, 22.12%, and 0.32 kg/kW-hr, respectively, for the composite desirability, D of 0.974. The 100 ppm nanographene emulsified distilled waste plastic pyrolysis oil and diesel blend has the lowest relative cost variation of −14.583.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"22 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139795073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-07DOI: 10.1177/09544089231224888
Dantong Li, Zhilong He, Kai Ma, Chongzhou Sun, Ziwen Xing
This paper introduced a novel design and optimization method of the Roots profile to enhance the performance of helical Roots blowers in Hydrogen Fuel Cell Vehicle applications. The proposed profile was generated based on defined meshing curves, and thus the shape of meshing curves can be explicitly optimized. First, the mathematical models for Roots profile generation based on meshing curves were presented. Next, the influence of the shape of meshing curves on the geometric performance of Roots rotors was investigated, and the meshing curve was further optimized using a genetic algorithm. Finally, the CFD method was employed to identify the specific performance enhancement brought by the optimized Roots profile. Results showed that the proposed profile design method could flexibly adjust the shape of meshing curves so as to intuitively control the spatial leakage channels formed by helical rotors. The optimized profile boosted the volumetric and adiabatic efficiency of the Roots blower up to 2.87%, and 1.89%, respectively, compared to the original one. The leakage analysis indicated that the performance improvement was attributed to the reduction of the leakage rate caused by the blow-hole and contact line. The conclusions obtained could effectively support the development of high-efficiency helical Roots blowers.
{"title":"Rotor profile improvement by optimizing meshing curve for helical roots blowers in HFCV application","authors":"Dantong Li, Zhilong He, Kai Ma, Chongzhou Sun, Ziwen Xing","doi":"10.1177/09544089231224888","DOIUrl":"https://doi.org/10.1177/09544089231224888","url":null,"abstract":"This paper introduced a novel design and optimization method of the Roots profile to enhance the performance of helical Roots blowers in Hydrogen Fuel Cell Vehicle applications. The proposed profile was generated based on defined meshing curves, and thus the shape of meshing curves can be explicitly optimized. First, the mathematical models for Roots profile generation based on meshing curves were presented. Next, the influence of the shape of meshing curves on the geometric performance of Roots rotors was investigated, and the meshing curve was further optimized using a genetic algorithm. Finally, the CFD method was employed to identify the specific performance enhancement brought by the optimized Roots profile. Results showed that the proposed profile design method could flexibly adjust the shape of meshing curves so as to intuitively control the spatial leakage channels formed by helical rotors. The optimized profile boosted the volumetric and adiabatic efficiency of the Roots blower up to 2.87%, and 1.89%, respectively, compared to the original one. The leakage analysis indicated that the performance improvement was attributed to the reduction of the leakage rate caused by the blow-hole and contact line. The conclusions obtained could effectively support the development of high-efficiency helical Roots blowers.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"5 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139795589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-05DOI: 10.1177/09544089231223022
Pankaj, S. Kant, C. Jawalkar, S. K. Khatkar, Manjeet Singh, Manish Kumar Jindal
The current study focuses on fabricating partially biodegradable composites added with nettle and grewia optiva fibers in epoxy. The mechanical properties of various fiber reinforcement combinations, such as tensile, impact, and flexural strength were evaluated. One of the main issues when drilling natural fiber-reinforced polymer composites is delamination damage. Therefore, the drilling ability of the hybrid composites was investigated by various drilling operation conditions: drill diameter (4, 6, 8 mm), feed rate (0.125, 0.212, 0.3 mm/rev) and spindle speed (400, 600, 800 rev/min). The experimental investigation was carried out using a twist drill at dry and ambient temperatures. The response surface methodology (RSM) was adopted during the investigation and the contribution of feed rate (65.31%) was found as the dominant factor, followed by spindle speed (35.83%) and drill diameter (10.72%) to influence the delamination factor of hybrid composites. The grey relation analysis was further applied to the experimental results to rank the experiments. Scanning electron microscopy was used to examine the fractured surface of tested samples and delamination damage caused by drilling operations. The developed composites offered a maximum tensile strength (34.3 MPa), impact strength (11.13 J) and flexural strength (23.91 MPa) observed in the hybrid composites for a reinforcement combination of 5% nettle and 15% grewia optiva fibers. The prediction models developed by RSM and artificial neural network (ANN) were matched with the investigated results and ANN was noticed to be more accurate than the RSM. The research work will be beneficial for the industries involved in the development of structural panels reinforced with nettle and grewia optiva fibers.
{"title":"Experimental investigation on mechanical performance and drilling behavior of hybrid polymer composites through statistical and machine learning approach","authors":"Pankaj, S. Kant, C. Jawalkar, S. K. Khatkar, Manjeet Singh, Manish Kumar Jindal","doi":"10.1177/09544089231223022","DOIUrl":"https://doi.org/10.1177/09544089231223022","url":null,"abstract":"The current study focuses on fabricating partially biodegradable composites added with nettle and grewia optiva fibers in epoxy. The mechanical properties of various fiber reinforcement combinations, such as tensile, impact, and flexural strength were evaluated. One of the main issues when drilling natural fiber-reinforced polymer composites is delamination damage. Therefore, the drilling ability of the hybrid composites was investigated by various drilling operation conditions: drill diameter (4, 6, 8 mm), feed rate (0.125, 0.212, 0.3 mm/rev) and spindle speed (400, 600, 800 rev/min). The experimental investigation was carried out using a twist drill at dry and ambient temperatures. The response surface methodology (RSM) was adopted during the investigation and the contribution of feed rate (65.31%) was found as the dominant factor, followed by spindle speed (35.83%) and drill diameter (10.72%) to influence the delamination factor of hybrid composites. The grey relation analysis was further applied to the experimental results to rank the experiments. Scanning electron microscopy was used to examine the fractured surface of tested samples and delamination damage caused by drilling operations. The developed composites offered a maximum tensile strength (34.3 MPa), impact strength (11.13 J) and flexural strength (23.91 MPa) observed in the hybrid composites for a reinforcement combination of 5% nettle and 15% grewia optiva fibers. The prediction models developed by RSM and artificial neural network (ANN) were matched with the investigated results and ANN was noticed to be more accurate than the RSM. The research work will be beneficial for the industries involved in the development of structural panels reinforced with nettle and grewia optiva fibers.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"193 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139862588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-05DOI: 10.1177/09544089231223022
Pankaj, S. Kant, C. Jawalkar, S. K. Khatkar, Manjeet Singh, Manish Kumar Jindal
The current study focuses on fabricating partially biodegradable composites added with nettle and grewia optiva fibers in epoxy. The mechanical properties of various fiber reinforcement combinations, such as tensile, impact, and flexural strength were evaluated. One of the main issues when drilling natural fiber-reinforced polymer composites is delamination damage. Therefore, the drilling ability of the hybrid composites was investigated by various drilling operation conditions: drill diameter (4, 6, 8 mm), feed rate (0.125, 0.212, 0.3 mm/rev) and spindle speed (400, 600, 800 rev/min). The experimental investigation was carried out using a twist drill at dry and ambient temperatures. The response surface methodology (RSM) was adopted during the investigation and the contribution of feed rate (65.31%) was found as the dominant factor, followed by spindle speed (35.83%) and drill diameter (10.72%) to influence the delamination factor of hybrid composites. The grey relation analysis was further applied to the experimental results to rank the experiments. Scanning electron microscopy was used to examine the fractured surface of tested samples and delamination damage caused by drilling operations. The developed composites offered a maximum tensile strength (34.3 MPa), impact strength (11.13 J) and flexural strength (23.91 MPa) observed in the hybrid composites for a reinforcement combination of 5% nettle and 15% grewia optiva fibers. The prediction models developed by RSM and artificial neural network (ANN) were matched with the investigated results and ANN was noticed to be more accurate than the RSM. The research work will be beneficial for the industries involved in the development of structural panels reinforced with nettle and grewia optiva fibers.
{"title":"Experimental investigation on mechanical performance and drilling behavior of hybrid polymer composites through statistical and machine learning approach","authors":"Pankaj, S. Kant, C. Jawalkar, S. K. Khatkar, Manjeet Singh, Manish Kumar Jindal","doi":"10.1177/09544089231223022","DOIUrl":"https://doi.org/10.1177/09544089231223022","url":null,"abstract":"The current study focuses on fabricating partially biodegradable composites added with nettle and grewia optiva fibers in epoxy. The mechanical properties of various fiber reinforcement combinations, such as tensile, impact, and flexural strength were evaluated. One of the main issues when drilling natural fiber-reinforced polymer composites is delamination damage. Therefore, the drilling ability of the hybrid composites was investigated by various drilling operation conditions: drill diameter (4, 6, 8 mm), feed rate (0.125, 0.212, 0.3 mm/rev) and spindle speed (400, 600, 800 rev/min). The experimental investigation was carried out using a twist drill at dry and ambient temperatures. The response surface methodology (RSM) was adopted during the investigation and the contribution of feed rate (65.31%) was found as the dominant factor, followed by spindle speed (35.83%) and drill diameter (10.72%) to influence the delamination factor of hybrid composites. The grey relation analysis was further applied to the experimental results to rank the experiments. Scanning electron microscopy was used to examine the fractured surface of tested samples and delamination damage caused by drilling operations. The developed composites offered a maximum tensile strength (34.3 MPa), impact strength (11.13 J) and flexural strength (23.91 MPa) observed in the hybrid composites for a reinforcement combination of 5% nettle and 15% grewia optiva fibers. The prediction models developed by RSM and artificial neural network (ANN) were matched with the investigated results and ANN was noticed to be more accurate than the RSM. The research work will be beneficial for the industries involved in the development of structural panels reinforced with nettle and grewia optiva fibers.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"16 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139802715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-04DOI: 10.1177/09544089231225751
Nikhilesh Singh, Deepika
In the current scenario, high-performance, economical, and eco-friendly materials are the main objectives for many researchers in the field of material science. Therefore, this article demonstrates the novel green HMMCs comprise Al7075-T6 as a base alloy matrix with three distinct reinforced particles (such as silicon carbide (SiC), crumb rubber (CR), and molybdenum disulfide (MoS2)) is effectively doped via stir casting technique for the lightweight applications in an automotive and avionics industries. Besides, the different range of process variables such as SiC, CR, and MoS2 along with stirring speed, stirring time, and pouring temperature are elected for the synthesis of green composites via Taguchi L18 mixed-level orthogonal array. The parametric analysis of synthesized green HMMCs in terms of impact strength (in J) and compressive strength (in MPa) is examined with the help of the Taguchi design of experimentation and pooled analysis of variance. Moreover, metallographic inspection is also done via optical microscope and SEM-EDS techniques. The proposed green hybrid sample (S3) capitulates a superior enhancement in its microstructure, impact strength (up to 62.66%), and compressive strength (up to 22.78%) as compared with base alloy composite (S0). Furthermore, Taguchi's experimental outcomes are compared and validated via the technique for order of preference by similarity to ideal solution algorithm for better validation of the impact strength and compressive strength of the Al-based green hybrid metal matrix composite (S3).
{"title":"Morphological and mechanical behavior of novel Al7075 (T6) + 3.5% SiC + 0.3% CR + 5.5% MoS2-based green hybrid composite: An experimental analysis and optimization via TOPSIS","authors":"Nikhilesh Singh, Deepika","doi":"10.1177/09544089231225751","DOIUrl":"https://doi.org/10.1177/09544089231225751","url":null,"abstract":"In the current scenario, high-performance, economical, and eco-friendly materials are the main objectives for many researchers in the field of material science. Therefore, this article demonstrates the novel green HMMCs comprise Al7075-T6 as a base alloy matrix with three distinct reinforced particles (such as silicon carbide (SiC), crumb rubber (CR), and molybdenum disulfide (MoS2)) is effectively doped via stir casting technique for the lightweight applications in an automotive and avionics industries. Besides, the different range of process variables such as SiC, CR, and MoS2 along with stirring speed, stirring time, and pouring temperature are elected for the synthesis of green composites via Taguchi L18 mixed-level orthogonal array. The parametric analysis of synthesized green HMMCs in terms of impact strength (in J) and compressive strength (in MPa) is examined with the help of the Taguchi design of experimentation and pooled analysis of variance. Moreover, metallographic inspection is also done via optical microscope and SEM-EDS techniques. The proposed green hybrid sample (S3) capitulates a superior enhancement in its microstructure, impact strength (up to 62.66%), and compressive strength (up to 22.78%) as compared with base alloy composite (S0). Furthermore, Taguchi's experimental outcomes are compared and validated via the technique for order of preference by similarity to ideal solution algorithm for better validation of the impact strength and compressive strength of the Al-based green hybrid metal matrix composite (S3).","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"3 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139866298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-02-04DOI: 10.1177/09544089231225751
Nikhilesh Singh, Deepika
In the current scenario, high-performance, economical, and eco-friendly materials are the main objectives for many researchers in the field of material science. Therefore, this article demonstrates the novel green HMMCs comprise Al7075-T6 as a base alloy matrix with three distinct reinforced particles (such as silicon carbide (SiC), crumb rubber (CR), and molybdenum disulfide (MoS2)) is effectively doped via stir casting technique for the lightweight applications in an automotive and avionics industries. Besides, the different range of process variables such as SiC, CR, and MoS2 along with stirring speed, stirring time, and pouring temperature are elected for the synthesis of green composites via Taguchi L18 mixed-level orthogonal array. The parametric analysis of synthesized green HMMCs in terms of impact strength (in J) and compressive strength (in MPa) is examined with the help of the Taguchi design of experimentation and pooled analysis of variance. Moreover, metallographic inspection is also done via optical microscope and SEM-EDS techniques. The proposed green hybrid sample (S3) capitulates a superior enhancement in its microstructure, impact strength (up to 62.66%), and compressive strength (up to 22.78%) as compared with base alloy composite (S0). Furthermore, Taguchi's experimental outcomes are compared and validated via the technique for order of preference by similarity to ideal solution algorithm for better validation of the impact strength and compressive strength of the Al-based green hybrid metal matrix composite (S3).
{"title":"Morphological and mechanical behavior of novel Al7075 (T6) + 3.5% SiC + 0.3% CR + 5.5% MoS2-based green hybrid composite: An experimental analysis and optimization via TOPSIS","authors":"Nikhilesh Singh, Deepika","doi":"10.1177/09544089231225751","DOIUrl":"https://doi.org/10.1177/09544089231225751","url":null,"abstract":"In the current scenario, high-performance, economical, and eco-friendly materials are the main objectives for many researchers in the field of material science. Therefore, this article demonstrates the novel green HMMCs comprise Al7075-T6 as a base alloy matrix with three distinct reinforced particles (such as silicon carbide (SiC), crumb rubber (CR), and molybdenum disulfide (MoS2)) is effectively doped via stir casting technique for the lightweight applications in an automotive and avionics industries. Besides, the different range of process variables such as SiC, CR, and MoS2 along with stirring speed, stirring time, and pouring temperature are elected for the synthesis of green composites via Taguchi L18 mixed-level orthogonal array. The parametric analysis of synthesized green HMMCs in terms of impact strength (in J) and compressive strength (in MPa) is examined with the help of the Taguchi design of experimentation and pooled analysis of variance. Moreover, metallographic inspection is also done via optical microscope and SEM-EDS techniques. The proposed green hybrid sample (S3) capitulates a superior enhancement in its microstructure, impact strength (up to 62.66%), and compressive strength (up to 22.78%) as compared with base alloy composite (S0). Furthermore, Taguchi's experimental outcomes are compared and validated via the technique for order of preference by similarity to ideal solution algorithm for better validation of the impact strength and compressive strength of the Al-based green hybrid metal matrix composite (S3).","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139806409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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