Pub Date : 2023-02-12DOI: 10.1177/13506501231154633
Daniels Jacob, Prakash Muniyandi
Polycarbonate urethane has gained popularity as a bearing material to replace the existing hard polymeric materials in artificial joints. However, the viability of using polycarbonate urethane in artificial disc replacement over its metal counterpart is the challenge addressed in this research work. The present study is carried out to find the tribological behaviour of polycarbonate urethane against Ti-6Al-4V, which is the most frequently used endplate material in artificial disc replacement. The wear test is performed in pin-on-disc tribometer under lubricated condition using Hank's balanced salt solution with the variation in load as 10, 15, and 20 N, speed as 0.31, 0.63, and 0.94 m/s, and the number of cycles being 10,000, 25,000, and 50,000. A long-term wear evaluation is carried out to find the wear behaviour of polycarbonate urethane against Ti-6Al-4V. The wear is measured based on gravimetric analysis, and microscopic images are taken to analyze the wear pattern. The multi-objective optimization is also carried out to study the effect of control parameters. The wear pattern reveals that polycarbonate urethane has good tribological behaviour against Ti-6Al-4V. As the number of cycles increases, the polycarbonate urethane worn surfaces were found to be smooth. These results indicate that the polycarbonate urethane exhibits good resilience even after prolonged use.
{"title":"Tribological behaviour of polycarbonate urethane against Ti-6Al-4V for long-term resilient","authors":"Daniels Jacob, Prakash Muniyandi","doi":"10.1177/13506501231154633","DOIUrl":"https://doi.org/10.1177/13506501231154633","url":null,"abstract":"Polycarbonate urethane has gained popularity as a bearing material to replace the existing hard polymeric materials in artificial joints. However, the viability of using polycarbonate urethane in artificial disc replacement over its metal counterpart is the challenge addressed in this research work. The present study is carried out to find the tribological behaviour of polycarbonate urethane against Ti-6Al-4V, which is the most frequently used endplate material in artificial disc replacement. The wear test is performed in pin-on-disc tribometer under lubricated condition using Hank's balanced salt solution with the variation in load as 10, 15, and 20 N, speed as 0.31, 0.63, and 0.94 m/s, and the number of cycles being 10,000, 25,000, and 50,000. A long-term wear evaluation is carried out to find the wear behaviour of polycarbonate urethane against Ti-6Al-4V. The wear is measured based on gravimetric analysis, and microscopic images are taken to analyze the wear pattern. The multi-objective optimization is also carried out to study the effect of control parameters. The wear pattern reveals that polycarbonate urethane has good tribological behaviour against Ti-6Al-4V. As the number of cycles increases, the polycarbonate urethane worn surfaces were found to be smooth. These results indicate that the polycarbonate urethane exhibits good resilience even after prolonged use.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"10 1","pages":"1235 - 1249"},"PeriodicalIF":2.0,"publicationDate":"2023-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87041379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-08DOI: 10.1177/13506501231151719
Sindhu Budati, Z. Leman, MH Sulaiman, M. A. Hanim, M. Ghazali
Brake friction materials play a crucial role to enable effective deceleration on the moving rail vehicle. Unfortunately, particulate matters generated by brake wear as well as during the brake manufacturing process are affecting the environment and human health. Due to this, the development of green friction material is important to improve environmental health, safety, and human health. To develop new environmental-friendly friction materials, it is important to understand the commercial brake block material components and their tribological performance. Characterisation techniques such as hardness test, pin-on-disc wear test, durability test, thermogravimetric analysis, morphology, density and porosity were performed on the commercial brake block, the obtained results were then compared with the existing literature. The experiment results showed that the performance of the commercial sample is superior to the available green friction composite materials. This indicates the necessity of a new formulation for the development of green friction brake block material that can give better or similar performance as commercial material. The results from this article can be referenced to develop the new formulation.
{"title":"An investigation into the physical, mechanical, tribology, thermal and durability performance of commercial brake material for rail transportation","authors":"Sindhu Budati, Z. Leman, MH Sulaiman, M. A. Hanim, M. Ghazali","doi":"10.1177/13506501231151719","DOIUrl":"https://doi.org/10.1177/13506501231151719","url":null,"abstract":"Brake friction materials play a crucial role to enable effective deceleration on the moving rail vehicle. Unfortunately, particulate matters generated by brake wear as well as during the brake manufacturing process are affecting the environment and human health. Due to this, the development of green friction material is important to improve environmental health, safety, and human health. To develop new environmental-friendly friction materials, it is important to understand the commercial brake block material components and their tribological performance. Characterisation techniques such as hardness test, pin-on-disc wear test, durability test, thermogravimetric analysis, morphology, density and porosity were performed on the commercial brake block, the obtained results were then compared with the existing literature. The experiment results showed that the performance of the commercial sample is superior to the available green friction composite materials. This indicates the necessity of a new formulation for the development of green friction brake block material that can give better or similar performance as commercial material. The results from this article can be referenced to develop the new formulation.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"43 1","pages":"1620 - 1631"},"PeriodicalIF":2.0,"publicationDate":"2023-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88908154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-07DOI: 10.1177/13506501231153521
G. Akıncıoğlu, Emine Şirin, Enes Aslan
Acrylonitrile butadiene styrene (ABS), a petroleum-based thermoplastic, is widely used in various industry. It is important to make product costs without reducing the wear characteristics of products. For this reason, over the past 20 years, researchers have focused on improving product performance by reducing material weight. The literature has limited information about the tribological properties of the ABS polymer samples produced with fused deposition modelling. In this study, gyroid-patterned ABS samples with different infill densities (25%, 50%, and 75%) were produced and the effect on the wear properties of the samples was investigated. The main aim of the study is to show the infill density effect on wear and friction performance of the samples and find the coefficient of friction values. So, this study is one of the first studies which investigated wear and friction properties of ABS polymer produced as gyroid pattern with different infill densities. The study might also be used to have an initial information whether ABS polymer can be used in additive manufacturing systems for the joint components. As the performance indicator, diameter deviation, hardness, surface roughness, test temperature, friction coefficient, weight loss, and wearing surface results of the samples were evaluated. The results show that infill density is an important property that effect the tribological and heating characteristic of ABS samples. The friction and heat of the samples increase by increasing infill density. According to the tribological test results, the highest coefficient of friction and friction temperature were reached in the samples with 75% infill density.
{"title":"Tribological characteristics of ABS structures with different infill densities tested by pin-on-disc","authors":"G. Akıncıoğlu, Emine Şirin, Enes Aslan","doi":"10.1177/13506501231153521","DOIUrl":"https://doi.org/10.1177/13506501231153521","url":null,"abstract":"Acrylonitrile butadiene styrene (ABS), a petroleum-based thermoplastic, is widely used in various industry. It is important to make product costs without reducing the wear characteristics of products. For this reason, over the past 20 years, researchers have focused on improving product performance by reducing material weight. The literature has limited information about the tribological properties of the ABS polymer samples produced with fused deposition modelling. In this study, gyroid-patterned ABS samples with different infill densities (25%, 50%, and 75%) were produced and the effect on the wear properties of the samples was investigated. The main aim of the study is to show the infill density effect on wear and friction performance of the samples and find the coefficient of friction values. So, this study is one of the first studies which investigated wear and friction properties of ABS polymer produced as gyroid pattern with different infill densities. The study might also be used to have an initial information whether ABS polymer can be used in additive manufacturing systems for the joint components. As the performance indicator, diameter deviation, hardness, surface roughness, test temperature, friction coefficient, weight loss, and wearing surface results of the samples were evaluated. The results show that infill density is an important property that effect the tribological and heating characteristic of ABS samples. The friction and heat of the samples increase by increasing infill density. According to the tribological test results, the highest coefficient of friction and friction temperature were reached in the samples with 75% infill density.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"4 1","pages":"1224 - 1234"},"PeriodicalIF":2.0,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84251186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-05DOI: 10.1177/13506501221151100
K. E. Ojaomo, S. Syahrullail, F. Zawawi, M. Yusop
Lubrication has remained an important aspect of machines maintenance and designs since time immemorial, yet the quest for improved lubricant for sustainable life of both equipment and environment continues to intensify. Many lubricants that is, research for a lubricant that is capable of providing maintenance of sustainable equipment without compromise to the environment is on the rise have been formulated and a lot of discoveries have been found in approaches toward enhanced and sustainable lubricants performance. Addition of foreign materials in nano quantity to fortify base oil properties for special purposes has also received greater attention in recent years. While this approach has yielded amazing results, concerns bordering on non-biodegradability of the mineral oils and safety of their additives to the environment equally continue to grow. This has escalated research interest in vegetable oils and their derivatives such as palm oil and other seed oils as a substitute toward limiting the consequences of improper disposal and eventual natural habitat degradation. A new approach to this quest is the adoption of palm oil (in Super Olein IV64 grade) with 150–450particles per million of tert-Butylhydroquinone for comparison with tribological behavior of mineral oil (Shell Helix SAE40W10) within the temperatures of 40°C to 100°C using linear reciprocating tribometer Winducom ASTM G133 test rig. The results showed tremendous similarity in coefficient of friction values between 0.1 and 0.12 of Super Olein with 150 particles per million and 300 particles per million of tert-Butylhydroquinone correlating closely with that of Shell Helix SAE40W10 at 80°C and 100°C, respectively. Wear track on the 20mm square plate was observed on the low-resolution microscope while wear scar diameter of the 6 mm SKD11 ball was observed on the high-resolution microscope. The results obtained at a temperature of 100°C in Super Olein IV64 + 150 particles per million tert-Butylhydroquinone and Super Olein IV64 + 300 particles per million tert-Butylhydroquinone is very similar to that of SAE40W10 except for Super Olein IV64 + 450 particles per million TBHQ whose coefficient of friction maintained a higher value of 0.3 at those temperatures.
{"title":"Potential of palm oil with tert-Butylhydroquinone in place of mineral oil lubricant for reducing environmental degradation","authors":"K. E. Ojaomo, S. Syahrullail, F. Zawawi, M. Yusop","doi":"10.1177/13506501221151100","DOIUrl":"https://doi.org/10.1177/13506501221151100","url":null,"abstract":"Lubrication has remained an important aspect of machines maintenance and designs since time immemorial, yet the quest for improved lubricant for sustainable life of both equipment and environment continues to intensify. Many lubricants that is, research for a lubricant that is capable of providing maintenance of sustainable equipment without compromise to the environment is on the rise have been formulated and a lot of discoveries have been found in approaches toward enhanced and sustainable lubricants performance. Addition of foreign materials in nano quantity to fortify base oil properties for special purposes has also received greater attention in recent years. While this approach has yielded amazing results, concerns bordering on non-biodegradability of the mineral oils and safety of their additives to the environment equally continue to grow. This has escalated research interest in vegetable oils and their derivatives such as palm oil and other seed oils as a substitute toward limiting the consequences of improper disposal and eventual natural habitat degradation. A new approach to this quest is the adoption of palm oil (in Super Olein IV64 grade) with 150–450particles per million of tert-Butylhydroquinone for comparison with tribological behavior of mineral oil (Shell Helix SAE40W10) within the temperatures of 40°C to 100°C using linear reciprocating tribometer Winducom ASTM G133 test rig. The results showed tremendous similarity in coefficient of friction values between 0.1 and 0.12 of Super Olein with 150 particles per million and 300 particles per million of tert-Butylhydroquinone correlating closely with that of Shell Helix SAE40W10 at 80°C and 100°C, respectively. Wear track on the 20mm square plate was observed on the low-resolution microscope while wear scar diameter of the 6 mm SKD11 ball was observed on the high-resolution microscope. The results obtained at a temperature of 100°C in Super Olein IV64 + 150 particles per million tert-Butylhydroquinone and Super Olein IV64 + 300 particles per million tert-Butylhydroquinone is very similar to that of SAE40W10 except for Super Olein IV64 + 450 particles per million TBHQ whose coefficient of friction maintained a higher value of 0.3 at those temperatures.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"42 1","pages":"1342 - 1352"},"PeriodicalIF":2.0,"publicationDate":"2023-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88687517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-01DOI: 10.1177/13506501231153462
Shuo Wang, F. Cheng, F. Wu, X. Peng, Yan-tao Cao
Microgrooves of different widths and microgrooves structures with varying widths were engraved on the surface of 6061 aluminum alloy using fiber laser marking equipment. In order to investigate the influence of the width of microgrooves on its cavitation behavior, cavitation tests on the microgroove structure were performed using an ultrasonic vibration apparatus. The hardness, the surface roughness, and the microscopic morphology of the samples were examined with a digital microhardness tester, a digital three-dimensional video microscope, and a scanning electron microscope, respectively. The results demonstrated that, increasing microgroove size was conducive to inhibition of cavitation erosion while decreasing microgroove size had an opposite effect. The surface microgrooves group elongated the incubation period of aluminum alloy in the cavitation tests, and noticeably increased the cavitation resistance of the aluminum alloy. It was also concluded that, the microgrooves group could transform microjets aiming at the alloy surface to the inside of microgrooves, and absorbed the impacted energy from microjets, leading to a remarkable anticavitation effect.
{"title":"A study on surface microgrooves in cavitation test of 6061 aluminum alloy","authors":"Shuo Wang, F. Cheng, F. Wu, X. Peng, Yan-tao Cao","doi":"10.1177/13506501231153462","DOIUrl":"https://doi.org/10.1177/13506501231153462","url":null,"abstract":"Microgrooves of different widths and microgrooves structures with varying widths were engraved on the surface of 6061 aluminum alloy using fiber laser marking equipment. In order to investigate the influence of the width of microgrooves on its cavitation behavior, cavitation tests on the microgroove structure were performed using an ultrasonic vibration apparatus. The hardness, the surface roughness, and the microscopic morphology of the samples were examined with a digital microhardness tester, a digital three-dimensional video microscope, and a scanning electron microscope, respectively. The results demonstrated that, increasing microgroove size was conducive to inhibition of cavitation erosion while decreasing microgroove size had an opposite effect. The surface microgrooves group elongated the incubation period of aluminum alloy in the cavitation tests, and noticeably increased the cavitation resistance of the aluminum alloy. It was also concluded that, the microgrooves group could transform microjets aiming at the alloy surface to the inside of microgrooves, and absorbed the impacted energy from microjets, leading to a remarkable anticavitation effect.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"5 1","pages":"1212 - 1223"},"PeriodicalIF":2.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90162422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-26DOI: 10.1177/13506501231152643
Jiaqi Li, Boyang Zhang, Qingdong Zhang, Rui Li
Surface topography plays an important role in mixed lubrication. However, the influence of the surface topography's morphological characteristics on lubrication performance is still not fully understood. In this article, we employ digital filtering and the Johnson transformation system, and we use a mixed plasto-elastohydrodynamic lubrication model to simulate the lubricated contact between rough spherical surfaces with different morphological characteristic parameters. The influence of skewness, kurtosis, and the wavelength factor, that is, the ratio between the autocorrelation lengths in the transversal and longitudinal directions, on contact pressure, film thickness, and von Mises (subsurface) stress, is examined with the mixed plasto-elastohydrodynamic lubrication model. The results confirm that plastic deformation leads to lower pressure distribution, distributed over a larger contact area than the pure elastohydrodynamic lubrication solution. Moreover, it is found that an increase in the kurtosis may improve the lubrication performance, while the opposite is true for the skewness and the wavelength factor. We believe that the insights obtained by means of the numerical simulations presented herein, would facilitate the design and manufacturing processes of the surfaces used for machine elements operating in the mixed plasto-elastohydrodynamic lubrication regime.
{"title":"The influence of surface topography on mixed plasto-elastohydrodynamic lubrication in point contacts","authors":"Jiaqi Li, Boyang Zhang, Qingdong Zhang, Rui Li","doi":"10.1177/13506501231152643","DOIUrl":"https://doi.org/10.1177/13506501231152643","url":null,"abstract":"Surface topography plays an important role in mixed lubrication. However, the influence of the surface topography's morphological characteristics on lubrication performance is still not fully understood. In this article, we employ digital filtering and the Johnson transformation system, and we use a mixed plasto-elastohydrodynamic lubrication model to simulate the lubricated contact between rough spherical surfaces with different morphological characteristic parameters. The influence of skewness, kurtosis, and the wavelength factor, that is, the ratio between the autocorrelation lengths in the transversal and longitudinal directions, on contact pressure, film thickness, and von Mises (subsurface) stress, is examined with the mixed plasto-elastohydrodynamic lubrication model. The results confirm that plastic deformation leads to lower pressure distribution, distributed over a larger contact area than the pure elastohydrodynamic lubrication solution. Moreover, it is found that an increase in the kurtosis may improve the lubrication performance, while the opposite is true for the skewness and the wavelength factor. We believe that the insights obtained by means of the numerical simulations presented herein, would facilitate the design and manufacturing processes of the surfaces used for machine elements operating in the mixed plasto-elastohydrodynamic lubrication regime.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"1 1","pages":"1197 - 1211"},"PeriodicalIF":2.0,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84205557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-23DOI: 10.1177/13506501221151099
Jianing Zhu, Qunfeng Zeng, Bing Zhang, Chao Yan, Wanjun He, N. Lin
In order to improve the lubrication performance of the WS2-based coatings at elevated temperature, the mechanisms of enhancing the tribological performance of WSNb coatings at elevated temperatures are investigated. The WSNb coating doped with 11.9 at.% Nb exhibited excellent anti-friction and wear resistance, achieved a low coefficient of friction of 0.02 at 400 °C, and its wear resistance was much better than that of WS2-based coatings. The Nb metal and its sulfide in the coating are more sensitive to oxygen than WS2 at 400 °C, which reduces the oxygen concentration between the friction pairs and protects the WS2 lubricating phase from being oxided. In addition, Nb enhances the hardness and Young's modulus of the coatings through the solid solution strengthening effect, generating a more continuous and stable lubricating film during the silding process. First-principles calculation results demonstrated that the Nb spontaneously forms Nb-S bonds with S atoms in the coating. The molecular details of the Nb-S formation have been investigated in depth.
{"title":"Improving the lubrication of WSNb nanocomposite coatings by the in-situ oxygen shielding effect at elevated temperatures: A combined study with density functional theory simulations","authors":"Jianing Zhu, Qunfeng Zeng, Bing Zhang, Chao Yan, Wanjun He, N. Lin","doi":"10.1177/13506501221151099","DOIUrl":"https://doi.org/10.1177/13506501221151099","url":null,"abstract":"In order to improve the lubrication performance of the WS2-based coatings at elevated temperature, the mechanisms of enhancing the tribological performance of WSNb coatings at elevated temperatures are investigated. The WSNb coating doped with 11.9 at.% Nb exhibited excellent anti-friction and wear resistance, achieved a low coefficient of friction of 0.02 at 400 °C, and its wear resistance was much better than that of WS2-based coatings. The Nb metal and its sulfide in the coating are more sensitive to oxygen than WS2 at 400 °C, which reduces the oxygen concentration between the friction pairs and protects the WS2 lubricating phase from being oxided. In addition, Nb enhances the hardness and Young's modulus of the coatings through the solid solution strengthening effect, generating a more continuous and stable lubricating film during the silding process. First-principles calculation results demonstrated that the Nb spontaneously forms Nb-S bonds with S atoms in the coating. The molecular details of the Nb-S formation have been investigated in depth.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"47 1","pages":"1181 - 1196"},"PeriodicalIF":2.0,"publicationDate":"2023-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90879132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-23DOI: 10.1177/13506501231151270
R. Vijay, V. N. Aju kumar, A. Sadiq, T. S. Krishna Kumar
Material loss due to relative motion between the contact surfaces causes surface degradation leading to premature failure of engineering systems. Of the several techniques to improve the wear resistance of rubbing components, the process of providing a hard protective surface coating has gained tremendous significance. Aluminum alloys used in engineering applications are exposed to rubbing, resulting in progressive wear. Sol-gel coating is a widely accepted surface coating technique for aluminum alloys, and this paper focuses on alumina and aluminum silicate coating applied to aluminum alloys. The tribological characteristics such as coefficient of friction (COF) and volumetric wear losses (VWL) are evaluated using a pin on disc (POD) tribometer. Finite-element analysis (FEA) plays a vital role in bringing an approximate solution to various engineering and non-engineering problems. The POD tribometer is modelled in the design modeller of the Ansys workbench based on the Archard wear model. The coating reliability is experimentally estimated based on its tribological properties. Surface hardness is measured by microhardness indentation test, and materials characterization is done using atomic force microscopy (AFM) and Fourier transform infrared radiation (FTIR) spectroscopy. It is observed that alumina coating exhibits better tribological properties than aluminum silicate-coated A356 aluminum alloy.
{"title":"Evaluation of tribological property and coating reliability of alumina and aluminum silicate-coated A356 aluminum alloy","authors":"R. Vijay, V. N. Aju kumar, A. Sadiq, T. S. Krishna Kumar","doi":"10.1177/13506501231151270","DOIUrl":"https://doi.org/10.1177/13506501231151270","url":null,"abstract":"Material loss due to relative motion between the contact surfaces causes surface degradation leading to premature failure of engineering systems. Of the several techniques to improve the wear resistance of rubbing components, the process of providing a hard protective surface coating has gained tremendous significance. Aluminum alloys used in engineering applications are exposed to rubbing, resulting in progressive wear. Sol-gel coating is a widely accepted surface coating technique for aluminum alloys, and this paper focuses on alumina and aluminum silicate coating applied to aluminum alloys. The tribological characteristics such as coefficient of friction (COF) and volumetric wear losses (VWL) are evaluated using a pin on disc (POD) tribometer. Finite-element analysis (FEA) plays a vital role in bringing an approximate solution to various engineering and non-engineering problems. The POD tribometer is modelled in the design modeller of the Ansys workbench based on the Archard wear model. The coating reliability is experimentally estimated based on its tribological properties. Surface hardness is measured by microhardness indentation test, and materials characterization is done using atomic force microscopy (AFM) and Fourier transform infrared radiation (FTIR) spectroscopy. It is observed that alumina coating exhibits better tribological properties than aluminum silicate-coated A356 aluminum alloy.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"51 1","pages":"1000 - 1011"},"PeriodicalIF":2.0,"publicationDate":"2023-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82271082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-08DOI: 10.1177/13506501221147367
M. Mhaske, R. Navthar, U. Shirsat
This paper deals with the replacement of existing brake pad material based on its highest strength and stiffness-to-weight ratio. To overcome this problem, we have investigated the input process parameters: silicon carbide weight percentage, normal pressure, sliding speed or distance, and temperature, all of which affect tribological properties. The tribological behavior of an aluminum-based silicon carbide metal matrix (Al-SiC) is investigated at elevated temperatures in this study. The metal matrix composite brake pad material has been introduced recently due to its cost-effectiveness, stable coefficient of friction, lower wear rate, and constant contact pressure at high temperatures. In this investigation, an LM25-SiC composite was fabricated using the stir casting technique, in which SiC particles were reinforced at 5%, 10%, and 15% by weight in the base alloy LM25. The investigation was carried out for friction and wear studies on a pin on a disc tester at elevated temperatures for different loads and sliding distances. The investigation using the design of experimentation highlighted by the Taguchi technique highlights the effectiveness of replacing existing brake pad material. The experimental results show improved mechanical properties due to the addition of SiC, and it is also observed that a 15% SiC addition to base metal gives optimal sliding wear.
{"title":"Effect of the pin temperature and SiC reinforcement on dry sliding tribological behavior of aluminium based silicon carbide metal matrix composite (Al-SiC) using Taguchi approach","authors":"M. Mhaske, R. Navthar, U. Shirsat","doi":"10.1177/13506501221147367","DOIUrl":"https://doi.org/10.1177/13506501221147367","url":null,"abstract":"This paper deals with the replacement of existing brake pad material based on its highest strength and stiffness-to-weight ratio. To overcome this problem, we have investigated the input process parameters: silicon carbide weight percentage, normal pressure, sliding speed or distance, and temperature, all of which affect tribological properties. The tribological behavior of an aluminum-based silicon carbide metal matrix (Al-SiC) is investigated at elevated temperatures in this study. The metal matrix composite brake pad material has been introduced recently due to its cost-effectiveness, stable coefficient of friction, lower wear rate, and constant contact pressure at high temperatures. In this investigation, an LM25-SiC composite was fabricated using the stir casting technique, in which SiC particles were reinforced at 5%, 10%, and 15% by weight in the base alloy LM25. The investigation was carried out for friction and wear studies on a pin on a disc tester at elevated temperatures for different loads and sliding distances. The investigation using the design of experimentation highlighted by the Taguchi technique highlights the effectiveness of replacing existing brake pad material. The experimental results show improved mechanical properties due to the addition of SiC, and it is also observed that a 15% SiC addition to base metal gives optimal sliding wear.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"49 1","pages":"979 - 991"},"PeriodicalIF":2.0,"publicationDate":"2023-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74021974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-08DOI: 10.1177/13506501221148781
S. Li, Xi Li, Hao Liu, Zhiyuan Zhou, Tao Liang
The friction pair wear in a high-pressure vane pump caused by solid particles in oil is a significant factor that affects the pump's service life. The study investigates the effects of solid particles on the tribological characteristics of the valve plate friction pair of a high-pressure vane pump. The effects of varying solid particle diameters (5–20 μm) and concentrations (0.001–0.015%) on the friction coefficient, wear rate, and surface morphology of the valve plate friction pair in a high-pressure vane pump were investigated. In addition, to study the effect of diameter and concentration of solid particle on the vane pump's volumetric efficiency, the volumetric efficiency of the vane pump was tested. According to the results, when the solid particle concentration was 0.001%, the friction coefficient increased first and then decreased as the solid particle diameter increased, with no obvious running-in process. Furthermore, the wear rate increased first and then decreased as the solid particle diameter also increased. When the solid particle diameter was greater than 15 μm, the friction coefficient decreased as the concentration increased, and a distinct running-in process was unobserved. During this time, the relationship between the valve plate's wear rate and the solid particle concentration was approximately linear. The wear of the valve plate with solid particles included the impact of scraping wear as well as the abrasive wear and slight adhesive wear caused by solid particles. The vane pump's volumetric efficiency decreased as the solid particle diameter increased with a linear relationship. The volumetric efficiency of the pump also showed a downtrend when the solid particle concentration increased. This research provides a reference for valve plate design and improving the performance of high-pressure vane pumps.
{"title":"Effect of solid particles in oil on tribological characteristics of the valve plate friction pair of a high-pressure vane pump","authors":"S. Li, Xi Li, Hao Liu, Zhiyuan Zhou, Tao Liang","doi":"10.1177/13506501221148781","DOIUrl":"https://doi.org/10.1177/13506501221148781","url":null,"abstract":"The friction pair wear in a high-pressure vane pump caused by solid particles in oil is a significant factor that affects the pump's service life. The study investigates the effects of solid particles on the tribological characteristics of the valve plate friction pair of a high-pressure vane pump. The effects of varying solid particle diameters (5–20 μm) and concentrations (0.001–0.015%) on the friction coefficient, wear rate, and surface morphology of the valve plate friction pair in a high-pressure vane pump were investigated. In addition, to study the effect of diameter and concentration of solid particle on the vane pump's volumetric efficiency, the volumetric efficiency of the vane pump was tested. According to the results, when the solid particle concentration was 0.001%, the friction coefficient increased first and then decreased as the solid particle diameter increased, with no obvious running-in process. Furthermore, the wear rate increased first and then decreased as the solid particle diameter also increased. When the solid particle diameter was greater than 15 μm, the friction coefficient decreased as the concentration increased, and a distinct running-in process was unobserved. During this time, the relationship between the valve plate's wear rate and the solid particle concentration was approximately linear. The wear of the valve plate with solid particles included the impact of scraping wear as well as the abrasive wear and slight adhesive wear caused by solid particles. The vane pump's volumetric efficiency decreased as the solid particle diameter increased with a linear relationship. The volumetric efficiency of the pump also showed a downtrend when the solid particle concentration increased. This research provides a reference for valve plate design and improving the performance of high-pressure vane pumps.","PeriodicalId":20570,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology","volume":"9 1","pages":"1170 - 1180"},"PeriodicalIF":2.0,"publicationDate":"2023-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88451394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：