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Sensors 2013, 13(4), 4051-4066; doi:10.3390/s130404051

Biaxial Yield Surface Investigation of Polymer-Matrix Composites

1
Key Laboratory of Ministry of Education for Electronic Equipment Structure Design, Xidian University, Xi'an 710071, China
2
State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
*
Author to whom correspondence should be addressed.
Received: 1 March 2013 / Revised: 18 March 2013 / Accepted: 18 March 2013 / Published: 25 March 2013
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [702 KB, 21 June 2014; original version 21 June 2014]   |  

Abstract

This article presents a numerical technique for computing the biaxial yield surface of polymer-matrix composites with a given microstructure. Generalized Method of Cells in combination with an Improved Bodner-Partom Viscoplastic model is used to compute the inelastic deformation. The validation of presented model is proved by a fiber Bragg gratings (FBGs) strain test system through uniaxial testing under two different strain rate conditions. On this basis, the manufacturing process thermal residual stress and strain rate effect on the biaxial yield surface of composites are considered. The results show that the effect of thermal residual stress on the biaxial yield response is closely dependent on loading conditions. Moreover, biaxial yield strength tends to increase with the increasing strain rate. View Full-Text
Keywords: biaxial yield surface; thermal residual stress; fiber off-axis angle; strain rate biaxial yield surface; thermal residual stress; fiber off-axis angle; strain rate
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Ye, J.; Qiu, Y.; Zhai, Z.; He, Z. Biaxial Yield Surface Investigation of Polymer-Matrix Composites. Sensors 2013, 13, 4051-4066.

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