Experimental study on z-pin bridging law by pullout test

Dai, Shao-Cong and Yan, Wenyi and Liu, Hong-Yuan and Mai, Yiu-Wing (2004) Experimental study on z-pin bridging law by pullout test. Composites Science and Technology, 64 (16). pp. 2451-2457. ISSN 0266-3538

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Abstract

This paper presents an experimental study on the evaluation of bridging law for a z-pin. The relationship between the z-pin bridging force and its displacement was measured by z-pin pullout tests. The tests were carried out using three types of samples with: single small pin; 3X3 small-pins (three columns x three rows) and 3X3 big-pins. For 3 X 3 small-pins samples, a typical pullout curve with initial bonding, debonding and frictional sliding was obtained. A high peak value of the debonding force was reached before z-pin debonding started. After debonding was initiated, the pull-out force dropped rapidly to a lower value, the pins were then pulled out steadily against friction. However, for samples with 3 X 3 big-pins, it was difficult to discern the peak debonding force. The major results of this study are expected to provide a better physical understanding of the mechanics and mechanisms of z-pin bridging, aside from an efficient and accurate methodology to measure the crack-bridging law.

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Item Type:	Article (Commonwealth Reporting Category C)
Refereed:	Yes
Item Status:	Live Archive
Additional Information:	© 2004 Elsevier Ltd. All rights reserved. Published version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School:	Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited:	11 Oct 2007 00:15
Last Modified:	30 Aug 2013 01:11
Uncontrolled Keywords:	Z-pin reinforcement; pullout test; bridging law; interfacial debonding; interfacial friction
Fields of Research :	09 Engineering > 0905 Civil Engineering > 090502 Construction Engineering 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials 01 Mathematical Sciences > 0102 Applied Mathematics > 010207 Theoretical and Applied Mechanics
Socio-Economic Objective:	E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI:	10.1016/j.compscitech.2004.04.005
URI:	http://eprints.usq.edu.au/id/eprint/126

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