Pub Date : 2022-05-15DOI: 10.32732/jma.2022.11.1.27
E. Pankratov
We consider a nonlinear model for analysis of current-voltage characteristic of a p-n-junction, which was manufactured in the framework of a heterostructure with specific configuration by diffusion or ion implantation. We analyzed the model to obtain dependence of the considered current-voltage characteristic on missmatch-induced stresses in the framework of the heterostructure. We also consider an analytical approach for analysis of mass and heat transport during the considered processes with account their nonlinearity and missmatch induced stresses as well changes of parameters of these in space and time.
{"title":"On Approach for Prognosis of Influence of Mismatch-induced Stresses on the I–V Characteristics of p-n-junctions Manufactured in a Heterostructure","authors":"E. Pankratov","doi":"10.32732/jma.2022.11.1.27","DOIUrl":"https://doi.org/10.32732/jma.2022.11.1.27","url":null,"abstract":"We consider a nonlinear model for analysis of current-voltage characteristic of a p-n-junction, which was manufactured in the framework of a heterostructure with specific configuration by diffusion or ion implantation. We analyzed the model to obtain dependence of the considered current-voltage characteristic on missmatch-induced stresses in the framework of the heterostructure. We also consider an analytical approach for analysis of mass and heat transport during the considered processes with account their nonlinearity and missmatch induced stresses as well changes of parameters of these in space and time.","PeriodicalId":14116,"journal":{"name":"International Journal of Materials Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79430552","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 : 2022-01-01DOI: 10.11648/j.ijmsa.20221102.13
Nan Nan, Jijun Feng
{"title":"Failure Analysis Report on Fractured Torsion Bar in Suspension of a Vehicle","authors":"Nan Nan, Jijun Feng","doi":"10.11648/j.ijmsa.20221102.13","DOIUrl":"https://doi.org/10.11648/j.ijmsa.20221102.13","url":null,"abstract":"","PeriodicalId":14116,"journal":{"name":"International Journal of Materials Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79811280","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 : 2022-01-01DOI: 10.11648/j.ijmsa.20221101.12
Z. Zheng, Huaihao Chen, Kaijie Zheng, Qi Li, A. Mao
{"title":"Synthesis and Properties of Melamine Modified Urea Formaldehyde Resin for Impregnation Under New Process","authors":"Z. Zheng, Huaihao Chen, Kaijie Zheng, Qi Li, A. Mao","doi":"10.11648/j.ijmsa.20221101.12","DOIUrl":"https://doi.org/10.11648/j.ijmsa.20221101.12","url":null,"abstract":"","PeriodicalId":14116,"journal":{"name":"International Journal of Materials Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76458897","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}
{"title":"Risk Management of Implementation of Reagentless Treatment of Acid Mine Water","authors":"Zobnin Boris Borisovich, Kochetkov Vitaly Victorovich, Shokurov Denis Sergeyevich, Korolev Oleg Anatolevich","doi":"10.11648/j.ijmsa.20221101.14","DOIUrl":"https://doi.org/10.11648/j.ijmsa.20221101.14","url":null,"abstract":"","PeriodicalId":14116,"journal":{"name":"International Journal of Materials Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89149634","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 : 2022-01-01DOI: 10.11648/j.ijmsa.20221101.13
Zhiyong Zheng, Yuanting Zhu, Kaisen Zheng, Qi Li, A. Mao
{"title":"Application of Graphene Oxide in Composite Geothermal Floor","authors":"Zhiyong Zheng, Yuanting Zhu, Kaisen Zheng, Qi Li, A. Mao","doi":"10.11648/j.ijmsa.20221101.13","DOIUrl":"https://doi.org/10.11648/j.ijmsa.20221101.13","url":null,"abstract":"","PeriodicalId":14116,"journal":{"name":"International Journal of Materials Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72837966","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 : 2022-01-01DOI: 10.11648/j.ijmsa.20221102.11
Subhamoy Singha Roy
{"title":"Chiral Waves and Topological Novel States in Fermi","authors":"Subhamoy Singha Roy","doi":"10.11648/j.ijmsa.20221102.11","DOIUrl":"https://doi.org/10.11648/j.ijmsa.20221102.11","url":null,"abstract":"","PeriodicalId":14116,"journal":{"name":"International Journal of Materials Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78589125","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 : 2022-01-01DOI: 10.32732/jma.2022.11.2.37
O. Kamiya, Etsushi Okuyama, Mamoru Takahashi, Y. Miyano, S. Ito, Kenji Murata, Junpei Nanao, Arata Maisawa, M. Kawano, Takashi Kazumi, M. Nakatsu, H. Mizuma, Y. Iwama
A steam pressure cracking (SPC) agent is a method that can dismantle concrete safely and quickly. In previous studies, the authors showed that the direction of the crack could be controlled by the tensile stress at the induction holes and not by the compressive stress at the SPC hole. We demonstrate that the compression elastic wave changes to a tensile wave when the wave is reflected at the free surface of the induction hole. We also examined the properties of the concrete by developing an elastic wave measuring system that is difficult to break down even in high-temperature, wet, and radiation environment. The elastic wave velocity change in the four concrete types was less than 4%. It was found that the standard deviation value, σ, changed four times. Therefore, it is possible to determine the deterioration of the internal structure of concrete using the standard deviation value σ, which indicates the dispersion of the elastic wave velocity.
{"title":"Elastic Wave Property of Concrete Decomposed by Steam Pressure Cracking Agent","authors":"O. Kamiya, Etsushi Okuyama, Mamoru Takahashi, Y. Miyano, S. Ito, Kenji Murata, Junpei Nanao, Arata Maisawa, M. Kawano, Takashi Kazumi, M. Nakatsu, H. Mizuma, Y. Iwama","doi":"10.32732/jma.2022.11.2.37","DOIUrl":"https://doi.org/10.32732/jma.2022.11.2.37","url":null,"abstract":"A steam pressure cracking (SPC) agent is a method that can dismantle concrete safely and quickly. In previous studies, the authors showed that the direction of the crack could be controlled by the tensile stress at the induction holes and not by the compressive stress at the SPC hole. We demonstrate that the compression elastic wave changes to a tensile wave when the wave is reflected at the free surface of the induction hole. We also examined the properties of the concrete by developing an elastic wave measuring system that is difficult to break down even in high-temperature, wet, and radiation environment. The elastic wave velocity change in the four concrete types was less than 4%. It was found that the standard deviation value, σ, changed four times. Therefore, it is possible to determine the deterioration of the internal structure of concrete using the standard deviation value σ, which indicates the dispersion of the elastic wave velocity.","PeriodicalId":14116,"journal":{"name":"International Journal of Materials Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76826843","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 : 2022-01-01DOI: 10.32732/jma.2022.11.2.46
A. Donatelli, M. Schioppa, F. Valentino, A. Scalone, F. De Pascalis, M. Nacucchi, F. Caretto
This article investigates if and at what extent a recycling process based on grinding, melting and re-shaping of recycled carbon fibers reinforced thermoplastic polymers (rCFRPs) can affect their physical, mechanical and thermal properties. The aim is to establish if they can be taken into consideration in the manufacturing of new composite materials in different sectors: automotive, marine, sporting goods, etc. Composites materials were submitted to the measurement of the fibers length they are composed of, and then analyzed by means of tensile and impact tests and a dynamic mechanical analysis (DMA). All the characterizations were performed to both initial and recycled composites and, in some cases, they were replied also after the intermediate accelerated aging. Characterization performed confirmed that, as expected, the recycling process affects the properties of the composites, but in different manners and to a different extent when different polymers are involved. Tensile and impact tests pointed out that the polypropylene based composites showed a less stiff and a more brittle behaviour after the recycling process and the DMA confirmed this evidence, highlighting in addition a more viscous behavior of the polymer after the recycling. Conversely, the polyamide 6 based composites increased their stiffness and ductility after the recycling. For all the composites the tensile strength dropped, confirming the weakening of the materials.
{"title":"Characterization of Composites Manufactured Through Reshaping of EoL Thermoplastic Polymers Reinforced with Recycled Carbon Fibers","authors":"A. Donatelli, M. Schioppa, F. Valentino, A. Scalone, F. De Pascalis, M. Nacucchi, F. Caretto","doi":"10.32732/jma.2022.11.2.46","DOIUrl":"https://doi.org/10.32732/jma.2022.11.2.46","url":null,"abstract":"This article investigates if and at what extent a recycling process based on grinding, melting and re-shaping of recycled carbon fibers reinforced thermoplastic polymers (rCFRPs) can affect their physical, mechanical and thermal properties. The aim is to establish if they can be taken into consideration in the manufacturing of new composite materials in different sectors: automotive, marine, sporting goods, etc. Composites materials were submitted to the measurement of the fibers length they are composed of, and then analyzed by means of tensile and impact tests and a dynamic mechanical analysis (DMA). All the characterizations were performed to both initial and recycled composites and, in some cases, they were replied also after the intermediate accelerated aging. Characterization performed confirmed that, as expected, the recycling process affects the properties of the composites, but in different manners and to a different extent when different polymers are involved. Tensile and impact tests pointed out that the polypropylene based composites showed a less stiff and a more brittle behaviour after the recycling process and the DMA confirmed this evidence, highlighting in addition a more viscous behavior of the polymer after the recycling. Conversely, the polyamide 6 based composites increased their stiffness and ductility after the recycling. For all the composites the tensile strength dropped, confirming the weakening of the materials.","PeriodicalId":14116,"journal":{"name":"International Journal of Materials Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90566688","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 : 2022-01-01DOI: 10.11648/j.ijmsa.20221101.11
Kevin Maraka Ndiema, Yin Zihong, Raymond Leiren Lekalpure, Mouhamed Bayane Bouraima, Clement Kiprotich Kiptum
{"title":"Experimental Study of Strength Development in Black Cotton Soil and Granular Material Reinforced with Geogrid and Non-Woven Geotextile","authors":"Kevin Maraka Ndiema, Yin Zihong, Raymond Leiren Lekalpure, Mouhamed Bayane Bouraima, Clement Kiprotich Kiptum","doi":"10.11648/j.ijmsa.20221101.11","DOIUrl":"https://doi.org/10.11648/j.ijmsa.20221101.11","url":null,"abstract":"","PeriodicalId":14116,"journal":{"name":"International Journal of Materials Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83516615","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 : 2022-01-01DOI: 10.11648/j.ijmsa.20221101.16
Pnina Ari-Gur, Igor Lapsker, Tyler William Bayne, Eric Allen Pietrowicz, P. Thannhauser, Spencer Hoin, Hermanu Joko Nugroho
: The scanning electron microscope (SEM) has evolved to become an indispensable tool for research and education in engineering, physics, nanotechnology, geosciences, materials science, biological sciences and other fields. However, training on a physical SEM is costly, time consuming, and often unavailable in economically disadvantaged areas. Advances in computer technology have made interactive three-dimensional (3D) virtual laboratory an effective tool for training in medicine and many engineering and technology fields. In the current work, in order to provide cost-effective hands-on training, a virtual 3D SEM was developed using the game development engine Unity 3D . It contains realistic 3D models of the physical components, created using 3ds Max ® , a software for 3D modeling and rendering. The components are manipulated with scripts programmed using C# and JavaScript and then paired with the corresponding model. Users may view and operate the virtual instrument, save images for further analysis, and write a report. The developed virtual SEM was tested on diverse groups of users at multiple institutions, each divided to treatment and control groups. Feedback from these tests was collected and used for improvements in the overall quality of the simulated experience. In addition, users reported the experience of training on the virtual SEM as enjoyable.
{"title":"Interactive Virtual Scanning Electron Microscope Inspired by 3D Game-Design","authors":"Pnina Ari-Gur, Igor Lapsker, Tyler William Bayne, Eric Allen Pietrowicz, P. Thannhauser, Spencer Hoin, Hermanu Joko Nugroho","doi":"10.11648/j.ijmsa.20221101.16","DOIUrl":"https://doi.org/10.11648/j.ijmsa.20221101.16","url":null,"abstract":": The scanning electron microscope (SEM) has evolved to become an indispensable tool for research and education in engineering, physics, nanotechnology, geosciences, materials science, biological sciences and other fields. However, training on a physical SEM is costly, time consuming, and often unavailable in economically disadvantaged areas. Advances in computer technology have made interactive three-dimensional (3D) virtual laboratory an effective tool for training in medicine and many engineering and technology fields. In the current work, in order to provide cost-effective hands-on training, a virtual 3D SEM was developed using the game development engine Unity 3D . It contains realistic 3D models of the physical components, created using 3ds Max ® , a software for 3D modeling and rendering. The components are manipulated with scripts programmed using C# and JavaScript and then paired with the corresponding model. Users may view and operate the virtual instrument, save images for further analysis, and write a report. The developed virtual SEM was tested on diverse groups of users at multiple institutions, each divided to treatment and control groups. Feedback from these tests was collected and used for improvements in the overall quality of the simulated experience. In addition, users reported the experience of training on the virtual SEM as enjoyable.","PeriodicalId":14116,"journal":{"name":"International Journal of Materials Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84421676","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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