Development of bonding methods and energy absorption of sandwich panels for thermoplastic advanced composites

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Publication Type thesis
School or College College of Engineering
Department Mechanical Engineering
Author Haslam, Erik Bravant
Title Development of bonding methods and energy absorption of sandwich panels for thermoplastic advanced composites
Date 2012-05
Description Given their high strength-to-weight and stiffness-to-weight ratios, sandwich composites continue to be considered for automotive applications. Thermoplastic materials, while difficult to bond, have an increased ease of manufacture and may be reprocessed, making them an attractive alternate to thermoset composites. This investigation focused on the evaluation of adhesives and surface treatments for both nylon and polypropylene thermoplastic composite adherends made from Towflex® pre-impregnated composite fabric. A manufacturing method was established for thermoplastic plates, which produced an acceptable surface finish without contaminating the bonding surface. Adhesives and surface treatments were evaluated using lap shear (ASTM D 3163) and cleavage (ASTM D 3433) test methods. The most promising adhesive/surface treatment combinations were selected for bonding of sandwich composites with two different core materials: balsa wood and polyurethane foam. Initial sandwich configuration testing consisted of flatwise tensile (ASTM C 297) and core shear (ASTM C 273) test methods. These tests provided insights into the sandwich properties and revealed any incompatibilities between the adhesive and the core. Follow on sandwich configuration evaluation consisted of edgewise compression testing, both statically (ASTM C 364) and dynamically. These tests determined the strength and ability of these sandwiches to absorb energy under two different types of loading.
Type Text
Publisher University of Utah
Subject Sandwich construction; Thermoplastic composites; Sandwich panels; Automotive applications
Dissertation Institution University of Utah
Dissertation Name Master of Science
Language eng
Rights Management Copyright © Erik Bravant Haslam 2012
Format Medium application/pdf
Format Extent 5,551,415 bytes
Identifier us-etd3,87340
Source Original in Marriott Library Special Collections, TA7.5 2012.H37
ARK ark:/87278/s69p3ggd
Setname ir_etd
Date Created 2012-11-16
Date Modified 2017-08-24
ID 195694
Reference URL