Rohit H. K, Chitranayak Chitranayak, Minz P. S, Dabas, J. K, K. K
Aqueous glycol solutions are widely used as coolant in secondary refrigeration systems. Freezing point is one of the crucial properties used to characterize the performance of coolant. Instrumental methods are often complex and require expensive equipment. For selection of right coolant mixture there was a need for systematic study of aqueous-glycol-salt solution over a wide range of composition. The research work in this paper presents a novel and rapid way for freezing point characterization of the ternary coolant mixture. The freezing behavior of ternary mixture was studied for different blends of ethylene glycol (EG), propylene glycol (PG), sodium chloride (NaCl) and water. Two sets of ternary mixture TM1 (EG-NaCl-water) and TM2 (PG-NaCl-water) were evaluated experimentally at various concentrations of glycol and NaCl. Effect of glycol and salt concentration on freezing point depression was analyzed. The results demonstrated that ternary mixtures required less EG/PG for cost effective formulation of secondary coolant for different cooling application in dairy and food processing industry.
{"title":"Estimation of Freezing Point of Ternary Coolant Mixture","authors":"Rohit H. K, Chitranayak Chitranayak, Minz P. S, Dabas, J. K, K. K","doi":"10.13005/msri/190307","DOIUrl":"https://doi.org/10.13005/msri/190307","url":null,"abstract":"Aqueous glycol solutions are widely used as coolant in secondary refrigeration systems. Freezing point is one of the crucial properties used to characterize the performance of coolant. Instrumental methods are often complex and require expensive equipment. For selection of right coolant mixture there was a need for systematic study of aqueous-glycol-salt solution over a wide range of composition. The research work in this paper presents a novel and rapid way for freezing point characterization of the ternary coolant mixture. The freezing behavior of ternary mixture was studied for different blends of ethylene glycol (EG), propylene glycol (PG), sodium chloride (NaCl) and water. Two sets of ternary mixture TM1 (EG-NaCl-water) and TM2 (PG-NaCl-water) were evaluated experimentally at various concentrations of glycol and NaCl. Effect of glycol and salt concentration on freezing point depression was analyzed. The results demonstrated that ternary mixtures required less EG/PG for cost effective formulation of secondary coolant for different cooling application in dairy and food processing industry.","PeriodicalId":18247,"journal":{"name":"Material Science Research India","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74584997","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}
P. Rani, Ashwini P. Alegaonkar, Prashant S. Alegaonkar
In the present study, cobalt sulphide was successfully synthesised via a simple, one-step hydrothermal route. The material has been characterised via infrared (FTIR) spectroscopy, electron microscopy (FESEM), and X-ray diffraction (XRD). The FTIR spectrum reveals a peak at 1126 cm-1, which corresponds to the S-O bending mode, and a peak at 663 cm-1, which represents sulphide stretching. According to XRD analysis, cobalt sulphide formed with the CoS1.097 configuration. FESEM study reveals that cobalt sulphide hexagonal sheets with a thickness of less than 100 nm have been prepared that are further arranged in a floral pattern. Cobalt and sulphide concentrations were found to be proportional in EDX analyses. Further, Electrochemical testing was performed with a two-electrode setup, 6M KOH as the electrolyte, and various current collectors (including nickel foam and aluminium foil). The galvanostatic charge-discharge characteristics and capacitance values have been compared using impedance spectroscopy and other techniques. Details of the analysis are presented.
{"title":"Evaluation of Electrochemical Performance of Cobalt Sulphide on Various Current Collectors","authors":"P. Rani, Ashwini P. Alegaonkar, Prashant S. Alegaonkar","doi":"10.13005/msri/190304","DOIUrl":"https://doi.org/10.13005/msri/190304","url":null,"abstract":"In the present study, cobalt sulphide was successfully synthesised via a simple, one-step hydrothermal route. The material has been characterised via infrared (FTIR) spectroscopy, electron microscopy (FESEM), and X-ray diffraction (XRD). The FTIR spectrum reveals a peak at 1126 cm-1, which corresponds to the S-O bending mode, and a peak at 663 cm-1, which represents sulphide stretching. According to XRD analysis, cobalt sulphide formed with the CoS1.097 configuration. FESEM study reveals that cobalt sulphide hexagonal sheets with a thickness of less than 100 nm have been prepared that are further arranged in a floral pattern. Cobalt and sulphide concentrations were found to be proportional in EDX analyses. Further, Electrochemical testing was performed with a two-electrode setup, 6M KOH as the electrolyte, and various current collectors (including nickel foam and aluminium foil). The galvanostatic charge-discharge characteristics and capacitance values have been compared using impedance spectroscopy and other techniques. Details of the analysis are presented.","PeriodicalId":18247,"journal":{"name":"Material Science Research India","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74651362","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}
Our previous study we extended an equation of state model for second order bulk modulus from recent predicted model and calculated variation of pressure with volume for several nanomaterials. Now we use such a model for few other nanomaterials like, TiO₂ (anatase), Ni (20 nm), CdSe (rock salt phase), AlN (Hexagonal), 3C-SiC (30 nm) and Rb₃C₆₀., compare with some other equation of state for nanomaterials and experimental data. The Microsoft Office software has been used to do the calculations. The studies gives great agreement with other EOS and experimental data. The study must be useful at high pressure when the experimental data are not available. So the given study must we useful at high pressure.
{"title":"Analytical Study of Nanomaterials Under High Pressure","authors":"Rohit Gupta, Mohit Gupta","doi":"10.13005/msri/190308","DOIUrl":"https://doi.org/10.13005/msri/190308","url":null,"abstract":"Our previous study we extended an equation of state model for second order bulk modulus from recent predicted model and calculated variation of pressure with volume for several nanomaterials. Now we use such a model for few other nanomaterials like, TiO₂ (anatase), Ni (20 nm), CdSe (rock salt phase), AlN (Hexagonal), 3C-SiC (30 nm) and Rb₃C₆₀., compare with some other equation of state for nanomaterials and experimental data. The Microsoft Office software has been used to do the calculations. The studies gives great agreement with other EOS and experimental data. The study must be useful at high pressure when the experimental data are not available. So the given study must we useful at high pressure.","PeriodicalId":18247,"journal":{"name":"Material Science Research India","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89626008","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}
This editorial paper reports the features and main improvements that shot peening treatment can induce on machine elements. In addition to surface hardening, the compressive stresses at the surface allow to increase the fatigue resistance. Examples of applications of connecting rods, crankshafts and spur gears treatment are reported. The aim it produce high strength-to-mass ratio components, reduce weight and design eco-friendly machines and vehicles.
{"title":"Shot Peening: Methods of Application of the Treatment and Induced Effects","authors":"S. Baragetti","doi":"10.13005/msri/190302","DOIUrl":"https://doi.org/10.13005/msri/190302","url":null,"abstract":"This editorial paper reports the features and main improvements that shot peening treatment can induce on machine elements. In addition to surface hardening, the compressive stresses at the surface allow to increase the fatigue resistance. Examples of applications of connecting rods, crankshafts and spur gears treatment are reported. The aim it produce high strength-to-mass ratio components, reduce weight and design eco-friendly machines and vehicles.","PeriodicalId":18247,"journal":{"name":"Material Science Research India","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89748227","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}
M. S. Cetin, O. Toprakci, O. S. Taskin, A. Aksu, H. A. Toprakci
Filler dispersion is an important issue for polymer-based composites. Fillers can be dispersed by melt or solution processing methods. Solution-based mixing offers various combinations including ultrasonication, mechanical stirring, or high shear mixing. Planetary high shear mixing is a simple method with high dispersion performance. Dispersion and wetting of the fillers are provided by not only planetary shear movement of the mixer but also by the decrease in viscosity of the polymer phase because of high shear. Although that is advantageous for the dispersion of nanofillers, it might be challenging for the particles that have morphology with loosely bonded layers. To observe the effects of high shear mixing on expanded vermiculite (VMT) filled styrene-[ethylene-(ethylene-propylene)]-styrene (SEEPS) flexible composites, two different VMTs were used with different particle sizes at various VMT ratios from 1 to 30 wt%. Morphological, structural, thermal, mechanical properties, flame spread character of the composites, and viscosity of the solutions were analyzed. From morphological analysis, high shear mixing was found to be effective in terms of decreasing particle size and filler dispersion. While mechanical properties showed decrease, thermal stability, and flame retardancy of the composites increased. KEYWORDS: expanded vermiculite (VMT); flexible composites; flame retardancy; Planetary high shear mixing; styrene-[ethylene-(ethylene-propylene)]-styrene (SEEPS); thermoplastic elastomer
{"title":"High Shear Processing of Expanded Vermiculite Filled Polymer Composites: Particle Size Effect on Flexible Composites","authors":"M. S. Cetin, O. Toprakci, O. S. Taskin, A. Aksu, H. A. Toprakci","doi":"10.13005/msri/190303","DOIUrl":"https://doi.org/10.13005/msri/190303","url":null,"abstract":"Filler dispersion is an important issue for polymer-based composites. Fillers can be dispersed by melt or solution processing methods. Solution-based mixing offers various combinations including ultrasonication, mechanical stirring, or high shear mixing. Planetary high shear mixing is a simple method with high dispersion performance. Dispersion and wetting of the fillers are provided by not only planetary shear movement of the mixer but also by the decrease in viscosity of the polymer phase because of high shear. Although that is advantageous for the dispersion of nanofillers, it might be challenging for the particles that have morphology with loosely bonded layers. To observe the effects of high shear mixing on expanded vermiculite (VMT) filled styrene-[ethylene-(ethylene-propylene)]-styrene (SEEPS) flexible composites, two different VMTs were used with different particle sizes at various VMT ratios from 1 to 30 wt%. Morphological, structural, thermal, mechanical properties, flame spread character of the composites, and viscosity of the solutions were analyzed. From morphological analysis, high shear mixing was found to be effective in terms of decreasing particle size and filler dispersion. While mechanical properties showed decrease, thermal stability, and flame retardancy of the composites increased. KEYWORDS: expanded vermiculite (VMT); flexible composites; flame retardancy; Planetary high shear mixing; styrene-[ethylene-(ethylene-propylene)]-styrene (SEEPS); thermoplastic elastomer","PeriodicalId":18247,"journal":{"name":"Material Science Research India","volume":"97 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85902867","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}
, metal-free organic polymer and stable allotrope of carbon that is mostly employed for the degradation of dyes. It absorbs visible light due to its low band gap (2.7 eV) and π-π, 2D layered electronic structure. 4 The coupling of g-C3N4 and ZnO forms a novel scaffold nanocomposite which is a sensible way to improve light absorptivity, better surface area and charge carrier separation. The studies show that the modified ZnO NPs by Ag doping coupled with g-C 3 N 4 (Ag-ZnO/gC 3 N 4 NCs) produce a composite that shows improved properties of the photocatalyst. Antibacterial materials are frequently used because they can protect human beings from many diseases that are initiated due to bacterial exposure or contact. The synthesized NCs produced considerable zones of inhibition which point towardtheir good antibacterial activity. The reactive oxygen species damage the cellular membrane, leading to cell death.The ZnO NPs and their nanocomposites of Ag and g-C 3 N 4 are synthesized by a simple cost-effective co-precipitation method. This method provides a high yield with good purity of material and beneficial than other methods because the reagents are mixed at the molecular level so as to achieve the best stoichiometry and morphology with the desired size of thematerial. 5 The capping agent SDS is an anionic surfactant, it affects the morphology and aggregation ofmaterial which enhances the photocatalytic activity. The capping agent couldadsorb on nanoparticle surfaces and control the growth rate of crystallographic planes to limit the size and shape of nanoparticles. Boosting these activities of the ZnO NPs is the foremost goal of research. The research outcome will be helpful to different environmental remediation.The photocatalytic experiments showedthat the Ag-ZnO NPs (1.0 mol%) possessed excellent photocatalytic activity which exhibited a 26% increment in photodegradation of Methyl Orange (MO) compared to pristine ZnO under UV−Vis. the light within 90 min. These resultssuggest that Ag incorporated into ZnO will help to increase the rate offormation of O2•− and HO• reactive radicals,and
{"title":"Development of Visible Active Photocatalyst for the Environmental Remediation","authors":"K. Garadkar","doi":"10.13005/msri/190301","DOIUrl":"https://doi.org/10.13005/msri/190301","url":null,"abstract":", metal-free organic polymer and stable allotrope of carbon that is mostly employed for the degradation of dyes. It absorbs visible light due to its low band gap (2.7 eV) and π-π, 2D layered electronic structure. 4 The coupling of g-C3N4 and ZnO forms a novel scaffold nanocomposite which is a sensible way to improve light absorptivity, better surface area and charge carrier separation. The studies show that the modified ZnO NPs by Ag doping coupled with g-C 3 N 4 (Ag-ZnO/gC 3 N 4 NCs) produce a composite that shows improved properties of the photocatalyst. Antibacterial materials are frequently used because they can protect human beings from many diseases that are initiated due to bacterial exposure or contact. The synthesized NCs produced considerable zones of inhibition which point towardtheir good antibacterial activity. The reactive oxygen species damage the cellular membrane, leading to cell death.The ZnO NPs and their nanocomposites of Ag and g-C 3 N 4 are synthesized by a simple cost-effective co-precipitation method. This method provides a high yield with good purity of material and beneficial than other methods because the reagents are mixed at the molecular level so as to achieve the best stoichiometry and morphology with the desired size of thematerial. 5 The capping agent SDS is an anionic surfactant, it affects the morphology and aggregation ofmaterial which enhances the photocatalytic activity. The capping agent couldadsorb on nanoparticle surfaces and control the growth rate of crystallographic planes to limit the size and shape of nanoparticles. Boosting these activities of the ZnO NPs is the foremost goal of research. The research outcome will be helpful to different environmental remediation.The photocatalytic experiments showedthat the Ag-ZnO NPs (1.0 mol%) possessed excellent photocatalytic activity which exhibited a 26% increment in photodegradation of Methyl Orange (MO) compared to pristine ZnO under UV−Vis. the light within 90 min. These resultssuggest that Ag incorporated into ZnO will help to increase the rate offormation of O2•− and HO• reactive radicals,and","PeriodicalId":18247,"journal":{"name":"Material Science Research India","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82783429","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}
Due to the superior mechanical and thermal properties of nanomaterials like multi-walled carbon nanotubes, aluminum alloys containing them play a significant role in the aerospace and automotive industries. By incorporating multi-walled carbon nanotubes by weight percentage of (0, 0.25, 0.50, and 0.75) in Aluminum silicon alloy. proper dispersion is done using ball milling equipment to get the proper bonding between Aluminium silicon alloy with MWCNT then subsequently powder metallurgy followed by extrusion technique. Wear study is carried out by varying load by 20N to 40N by maintaining sliding distance constant at 1000m and speed at 3.14m/sec. Wear test indicates for 20N load that wear rate is reduced by 46% for 2-layer FGM compared to AlSi-0.5WT% MWCNT, AlSi-0.25WT% MWCNT and 10% reduction in wear rate compared to AlSi-0.75WT% MWCNT. In case of 40N, wear rate is decreased by 162% for 2-layer when compared with AlSi-0.25WT% MWCNT and by 91% when compared to AlSi-0.5WT% MWCNT. As the percentage of MWCNT increases leads to decrease in wear rate in case of 20N & 40N load for 2-layer FGM compared to nanocomposites. Optical microscopy is done to reveal the proper bonding of AlSi with MWCNT. SEM analysis is carried out to determine wear mechanism.
{"title":"Effect of Load on Wear and Friction of AlSi/MWCNT Functionally Graded Material Via Powder Metallurgy with Hot Extrusion Technique","authors":"Azeem Pasha, B. Rajaprakash","doi":"10.13005/msri/190305","DOIUrl":"https://doi.org/10.13005/msri/190305","url":null,"abstract":"Due to the superior mechanical and thermal properties of nanomaterials like multi-walled carbon nanotubes, aluminum alloys containing them play a significant role in the aerospace and automotive industries. By incorporating multi-walled carbon nanotubes by weight percentage of (0, 0.25, 0.50, and 0.75) in Aluminum silicon alloy. proper dispersion is done using ball milling equipment to get the proper bonding between Aluminium silicon alloy with MWCNT then subsequently powder metallurgy followed by extrusion technique. Wear study is carried out by varying load by 20N to 40N by maintaining sliding distance constant at 1000m and speed at 3.14m/sec. Wear test indicates for 20N load that wear rate is reduced by 46% for 2-layer FGM compared to AlSi-0.5WT% MWCNT, AlSi-0.25WT% MWCNT and 10% reduction in wear rate compared to AlSi-0.75WT% MWCNT. In case of 40N, wear rate is decreased by 162% for 2-layer when compared with AlSi-0.25WT% MWCNT and by 91% when compared to AlSi-0.5WT% MWCNT. As the percentage of MWCNT increases leads to decrease in wear rate in case of 20N & 40N load for 2-layer FGM compared to nanocomposites. Optical microscopy is done to reveal the proper bonding of AlSi with MWCNT. SEM analysis is carried out to determine wear mechanism.","PeriodicalId":18247,"journal":{"name":"Material Science Research India","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85273590","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}
The rapid increase in the world population is leading to the environmental pollution, global warming and other global crisis. Supply of electric power has become a huge concern due to this population burst and global industrialization. To overcome this issue, solar power has become one of the pivotal energy sources. In current scenario, numbers of photovoltaic and other solar powered installations are increasing around the world and in space to achieve energy independence. In space, electricity produced by photovoltaic conversion of solar energy and it is environment friendly energy source. Terrestrial solar power installations do not produce much electric power, because the sunshine in earth is unpredictable whereas celestial power generation is unlimited as in space, the sun will always be shining.
{"title":"Overview of Space Based Solar Power","authors":"R. V. R VENUGOPAL, M. H. R., Anjanpura V. Raghu","doi":"10.13005/msri/190203","DOIUrl":"https://doi.org/10.13005/msri/190203","url":null,"abstract":"The rapid increase in the world population is leading to the environmental pollution, global warming and other global crisis. Supply of electric power has become a huge concern due to this population burst and global industrialization. To overcome this issue, solar power has become one of the pivotal energy sources. In current scenario, numbers of photovoltaic and other solar powered installations are increasing around the world and in space to achieve energy independence. In space, electricity produced by photovoltaic conversion of solar energy and it is environment friendly energy source. Terrestrial solar power installations do not produce much electric power, because the sunshine in earth is unpredictable whereas celestial power generation is unlimited as in space, the sun will always be shining.","PeriodicalId":18247,"journal":{"name":"Material Science Research India","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90043438","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}
is possible using Real-time reverse transcription polymerase chain reaction (RT-PCR) test. Now days, RT-PCR is available very commonly in a very affordable prize.Such kind of SARS-CoV-2 virus cultured device also demonstrated no measurable cross-responsiveness with MERS CoV antigen, which is also a prerequisite of the COVID sensor. In addition to these, graphene’s characteristics enable it to be customized for a variety of uses, including biosensors, gas sensors, capacitors, solar cells etc.
{"title":"Panorama View of Most Voguish Field Effect Transistor (FET) Based Biosensors","authors":"J. Ray","doi":"10.13005/msri/190202","DOIUrl":"https://doi.org/10.13005/msri/190202","url":null,"abstract":"is possible using Real-time reverse transcription polymerase chain reaction (RT-PCR) test. Now days, RT-PCR is available very commonly in a very affordable prize.Such kind of SARS-CoV-2 virus cultured device also demonstrated no measurable cross-responsiveness with MERS CoV antigen, which is also a prerequisite of the COVID sensor. In addition to these, graphene’s characteristics enable it to be customized for a variety of uses, including biosensors, gas sensors, capacitors, solar cells etc.","PeriodicalId":18247,"journal":{"name":"Material Science Research India","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76828441","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}
This study investigates the effect of various fiber laser process parameters on texture diameter, depth and surface roughness of circular shaped textures fabricated on the commercially cast iron piston ring segments. Piston ring segments with hardness 410 HV, Young’s Modulus of 250 Gpa and surface roughness of 0.482 µm were used for the experimentation. The fiber laser system (Marko Laser, Germany), was used for the fabrication of textures on the cast iron segments having specifications like power of 20W, wavelength of 1062nm, maximum frequency 200KHz, maximum speed range of 15000 mm/s. The laser frequency, power, speed and number of loops are the input parameters which were varied to find its effect on the texture dimensions. The approximate target values to be achieved for circular texture dimensions are texture diameter of 100µm (bilateral tolerance of 10µm), texture depth of 20µm (bilateral tolerance of 3µm) and texture surface roughness of 3µm (bilateral tolerance of 0.5µm) respectively. A confocal microscope with three dimensional surface profiler was used to measure the surface topography of the textured surfaces. It has been observed that with increase in laser power initially texture diameter has been reduced but found to be increased for the maximum power condition, while dimple depth and surface roughness of the textures found to be increased gradually. Also with increase in frequency has not a significant effect on the texture diameter but the texture depth and surface roughness has been enhanced drastically. In the similar way with increase in the laser speed and number of loops, initially there was decrease in the texture dimensions but as the speed and number of loops increased the texture dimensions also has a slight enhancement on it. It may be concluded that laser power and laser frequency has a significant impact on the texture dimensions as compared to laser speed and number of loops. Also it can be summarized that for achieving the targeted values of the texture dimensions like texture diameter, texture depth and texture surface roughness on the piston ring surface the laser power of 12W, 8W and 8W, laser frequency of 25 KHz, 25 KHz and 20 KHz, laser scan speed of 170 mm/sec, 140 mm/sec and 110 mm/sec and number of laser loops of 5, 4 and 2 may be used respectively. KEYWORDS: Confocal Microscope; Fiber Laser; Laser Power; Laser Texturing; Texture Dimensions
{"title":"Effect of Fiber Laserprocess Parameters on Texture Dimensions Fabricated on Cast Iron Piston Ring Segments","authors":"A. Patil, V. Wakchaure, Uddhav M. Shirsat","doi":"10.13005/msri/190204","DOIUrl":"https://doi.org/10.13005/msri/190204","url":null,"abstract":"This study investigates the effect of various fiber laser process parameters on texture diameter, depth and surface roughness of circular shaped textures fabricated on the commercially cast iron piston ring segments. Piston ring segments with hardness 410 HV, Young’s Modulus of 250 Gpa and surface roughness of 0.482 µm were used for the experimentation. The fiber laser system (Marko Laser, Germany), was used for the fabrication of textures on the cast iron segments having specifications like power of 20W, wavelength of 1062nm, maximum frequency 200KHz, maximum speed range of 15000 mm/s. The laser frequency, power, speed and number of loops are the input parameters which were varied to find its effect on the texture dimensions. The approximate target values to be achieved for circular texture dimensions are texture diameter of 100µm (bilateral tolerance of 10µm), texture depth of 20µm (bilateral tolerance of 3µm) and texture surface roughness of 3µm (bilateral tolerance of 0.5µm) respectively. A confocal microscope with three dimensional surface profiler was used to measure the surface topography of the textured surfaces. It has been observed that with increase in laser power initially texture diameter has been reduced but found to be increased for the maximum power condition, while dimple depth and surface roughness of the textures found to be increased gradually. Also with increase in frequency has not a significant effect on the texture diameter but the texture depth and surface roughness has been enhanced drastically. In the similar way with increase in the laser speed and number of loops, initially there was decrease in the texture dimensions but as the speed and number of loops increased the texture dimensions also has a slight enhancement on it. It may be concluded that laser power and laser frequency has a significant impact on the texture dimensions as compared to laser speed and number of loops. Also it can be summarized that for achieving the targeted values of the texture dimensions like texture diameter, texture depth and texture surface roughness on the piston ring surface the laser power of 12W, 8W and 8W, laser frequency of 25 KHz, 25 KHz and 20 KHz, laser scan speed of 170 mm/sec, 140 mm/sec and 110 mm/sec and number of laser loops of 5, 4 and 2 may be used respectively. KEYWORDS: Confocal Microscope; Fiber Laser; Laser Power; Laser Texturing; Texture Dimensions","PeriodicalId":18247,"journal":{"name":"Material Science Research India","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84327732","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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