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Studies on Glass Fiber-Reinforced Composites for CAE-Driven Design of Impact Safety Countermeasures

Electronic Theses of Indian Institute of Science

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Title Studies on Glass Fiber-Reinforced Composites for CAE-Driven Design of Impact Safety Countermeasures
 
Creator Lakshmanan, P
 
Subject Glass Fiber Reinforced Composites
Fiber Reinforced Composites
CAE Driven Design
Glass Safety Countermeasures
Composite Materials
Chopped Strand Mat (CSM) Composite Laminates
Woven Roving Mat (WRM) Composite Laminates
Composite Laminates
Glass Fiber Composite Laminates
Vehile Crash Safety Countermeasures
Pure Hand Layup (PHL)
Compression Molding Assisted Hand Layup (CMAHL)
Vacuum Bagging Assisted Hand Layup (VBAHL)
GFRC Plates
Fiber-reinforced Composites (FRCs)
Mechanical Engineering
 
Description Man-made materials such as fiber-reinforced composites (FRCs) can be tailored for optimum performance in product design applications in terms of strength and weight. The current work is aimed at studying the behaviors of composite laminates based on E-glass CSM (Chopped Strand Mat) or WRM (Woven Roving Mat) plies with a polyester resin for impact protection applications. Detailed mechanical characterization of CSM and WRM laminates till failure is carried out for tensile, compressive and shear loads by varying manufacturing process, number of plies, and laminate thickness. The effect of fiber volume fraction on mechanical properties is shown. The efficacy of CSM and WRM laminates as energy- absorbing countermeasures is studied by performing quasi-static and axial impact tests on cylindrical tubes made of the stated FRCs. In addition to load-displacement and specific energy absorption attributes, failure modes are of interest in such studies. The potential of FRC laminates for protection against projectile impact is investigated by performing low velocity impact perforation tests with a falling tup fitted with an indentor, and medium to high velocity projectile impact tests in a gas gun-based device. The valuable results generated are used for the validation of nonlinear finite element-based CAE (Computer-Aided Engineering) procedures including application of a multi-modal failure criterion for explicit dynamic analysis. The present study not only throws light on complex mechanical behavior of an important class of lightweight materials under static and dynamic loads, but also simulation tools for the design of impact safety countermeasures such as bullet-proof laminates and energy–absorbing components for automotive body structures.
 
Contributor Deb, Anindya
 
Date 2018-01-29T16:07:52Z
2018-01-29T16:07:52Z
2018-01-29
2014
 
Type Thesis
 
Identifier http://hdl.handle.net/2005/3039
http://etd.ncsi.iisc.ernet.in/abstracts/3903/G26877-Abs.pdf
 
Language en_US
 
Relation G26877