Seminar Details

Seminar Title
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Development of advanced structural fiber metal laminates through polymer hybridization and nanofiller incorporation approaches
Seminar Type
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Progress Seminar
Department
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Metallurgical and Materials Engineering
Speaker Type
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Student
Speaker Name
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B N V S GANESH GUPTA K ( RollNo : 518MM1005)
Date  &  Time
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18 May 2021  03:00 PM
Venue
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Online using MS Teams (Team Code: cx9gzl1)
Contact
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Prof. Bankim Chandra Ray
Abstract
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Advanced materials like Fiber reinforced polymer (FRP) composites are the promising materials of the current century and find lot of applications in critical engineering fields. Due to their increasing demand, it becomes apparently essential to employ advanced techniques, which can predict the long-term behaviour of such materials in various in-service conditions. Commonly used polymers in such structural FRP composites are very often epoxy and vinyl ester. As each polymer has its own advantages and disadvantages, hybridization or blending of different polymers is a trending technology to improve the performance of the resulting FRP composite. The current article aims at comparing the performance of glass fiber reinforced epoxy-vinyl ester interpenetrating polymer network (GEVIPN) composite with that of the base materials, i.e. glass fiber reinforced epoxy (GE) and glass fiber reinforced vinyl ester (GVE) composites. Flexural testing has been conducted at various in-situ temperatures (30 °C, 60 °C and 90 °C) and the GEVIPN showed the best performance at 30 °C. The lifetime prediction of the composite materials is done using accelerated deformation and time-temperature superposition (TTSP) principle. It was observed that GEVIPN showed the best creep resistance as compared to the other two composites at lower temperature, whereas the trend got reversed at higher temperature. At 30 °C, GEVIPN composite showed positive reinforcement efficiency for ~385 days with respect to GE and ~46.27 years with respect to GVE. Similar studies were done for the other specific temperatures. Following this, analysis of the fractured surfaces was done under FESEM to identify the fracture mechanisms and draw a comparison between the composites.

Link to the MS Teams meeting:  https://teams.microsoft.com/l/meetup-join/19%3a198d71680fa3425f8a4b1bed0bed3f0f%40thread.tacv2/1620743064903?context=%7b%22Tid%22%3a%22bad12864-913e-4b99-87d6-b8d2ad459e27%22%2c%22Oid%22%3a%221405e08f-48e6-42fb-b9e1-7bf443e14231%22%7d