{"title":"Simulation and Modeling of Nanotechnology Aircraft Using MATLAB","authors":"I. Kumar","doi":"10.4018/978-1-5225-7921-2.CH008","DOIUrl":"https://doi.org/10.4018/978-1-5225-7921-2.CH008","url":null,"abstract":"The design methods based on aerospace model have been widely used in aircraft conceptual design for decades and proven very effective when restricted to simple problems with very approximate analyses. These monolithic, large, design and analysis codes are genuinely multidisciplinary, but as analyses become more complex, such codes have grown so large as to be incomprehensible and hence difficult to maintain. This chapter deals with the computational modeling of nanoparticles. Nanomaterials constitute a prominent sub-discipline in the materials and chemical sciences. Conventional materials like glass, ceramic, metals, polymers, or semiconductors can be acquired with nanoscale proportions. Nanomaterials have various microstructural distinctive attributes such as nanodiscs, nanotubes, nanocoatings, quantum dots, nanocomposites, and nanowires. The unique properties of nanoparticle-based materials and devices depend directly on size and structure dependent properties.","PeriodicalId":153670,"journal":{"name":"Nanotechnology in Aerospace and Structural Mechanics","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121989535","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}
Swamini Chopra, S. Sreya, Rohit V. Babhulkar, Swaksha P. Halde, Kavita A. Deshmukh, D. Peshwe
{"title":"Cryogenic Treatment of Polymer/MWCNT Nano-Composites for Mechanical and Tribological Applications","authors":"Swamini Chopra, S. Sreya, Rohit V. Babhulkar, Swaksha P. Halde, Kavita A. Deshmukh, D. Peshwe","doi":"10.4018/978-1-5225-7921-2.CH004","DOIUrl":"https://doi.org/10.4018/978-1-5225-7921-2.CH004","url":null,"abstract":"The cryogenic treatment of material has been known to motivate structural stability by rearranging its crystallographic structure in metals and by promoting intermolecular as well as intramolecular rearrangements in polymers. Additionally, in case of polymers reinforced with micro fillers, the structural changes brought about by cryogenic treatment are still largely governed by the polymer matrix itself. Thus, when investigated for their mechanical and tribological properties, the response of polymer/MWCNT nano-composites after cryogenic treatment was found to be depending on the cryo-structural modifications in the polymer matrix, followed by the MWCNT interaction to some extent. The enhancement in the mechanical properties of the polymer/MWCNT nano-composites is attributed to the increasing % crystallinity, changes in crystal structure, conversion of less stable phases into more stable phases, change in the nature of bonding and strengthening of interphase between polymer and MWCNT. Thus, for the cryogenic treatment temperature of -185 °C, the optimum soaking period for PA and PA/MWCNT nano-composite was 24 hrs, whereas for PBT and PBT/MWCNT nano-composite it was 12 hrs and 16 hrs, respectively. This agrees well with the popular claim that each polymer has a specific functional group and/or structural characteristic that readily responds to the cryogenic treatments conditions (irrespective of the filler type, content and/or interaction), thereby, modifying the structure and giving superior properties, which makes cryogenic treatment a material specific process.","PeriodicalId":153670,"journal":{"name":"Nanotechnology in Aerospace and Structural Mechanics","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121689364","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}