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Title: Testing the 2-3 Shear Strength of Unidirectional Composite

Abstract

In this study, the objective was to measure the “out-of-plane” 2-3 shear strength of unidirectional composite, working within constraints in supplied material geometry. Unidirectional carbon/epoxy composite material was tested using a sandwich-type beam specimen under 3-point bending with a low span-to-thickness ratio to achieve failure under 2-3 shear. Specimens were carefully designed to deliberately cause shear failure near the midplane, avoiding other possible failure mechanisms. A photoelastic coating and post-mortem microscopy were used to verify failures. Results were compared with a simple analytical description of failure and found to have good agreement. Notably, this approach was able to accommodate the limitations of the supplied material (thin sheets) while still providing an accurate means of obtaining the F23 shear strength of the material. The results also imply the possibility of testing the transverse tensile strength (F2t) in lieu of performing a shear test, which is far simpler, and inferring the out-of-plane shear strength F23.

Authors:
;
Publication Date:
Research Org.:
Ford Motor Company
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1504732
DOE Contract Number:  
EE0006867
Resource Type:
Conference
Resource Relation:
Conference: Conference Proceedings of the Society for Experimental Mechanics Series
Country of Publication:
United States
Language:
English

Citation Formats

Fenner, Joel S., and Daniel, Isaac M. Testing the 2-3 Shear Strength of Unidirectional Composite. United States: N. p., 2018. Web. doi:10.1007/978-3-319-95510-0_9.
Fenner, Joel S., & Daniel, Isaac M. Testing the 2-3 Shear Strength of Unidirectional Composite. United States. doi:10.1007/978-3-319-95510-0_9.
Fenner, Joel S., and Daniel, Isaac M. Tue . "Testing the 2-3 Shear Strength of Unidirectional Composite". United States. doi:10.1007/978-3-319-95510-0_9.
@article{osti_1504732,
title = {Testing the 2-3 Shear Strength of Unidirectional Composite},
author = {Fenner, Joel S. and Daniel, Isaac M.},
abstractNote = {In this study, the objective was to measure the “out-of-plane” 2-3 shear strength of unidirectional composite, working within constraints in supplied material geometry. Unidirectional carbon/epoxy composite material was tested using a sandwich-type beam specimen under 3-point bending with a low span-to-thickness ratio to achieve failure under 2-3 shear. Specimens were carefully designed to deliberately cause shear failure near the midplane, avoiding other possible failure mechanisms. A photoelastic coating and post-mortem microscopy were used to verify failures. Results were compared with a simple analytical description of failure and found to have good agreement. Notably, this approach was able to accommodate the limitations of the supplied material (thin sheets) while still providing an accurate means of obtaining the F23 shear strength of the material. The results also imply the possibility of testing the transverse tensile strength (F2t) in lieu of performing a shear test, which is far simpler, and inferring the out-of-plane shear strength F23.},
doi = {10.1007/978-3-319-95510-0_9},
journal = {},
issn = {2191--5644},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {10}
}

Conference:
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