Experimental study on z-pin bridging law by pullout test

Article

Dai, Shao-Cong, Yan, Wenyi, 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. https://doi.org/10.1016/j.compscitech.2004.04.005
Article Title

Experimental study on z-pin bridging law by pullout test

ERA Journal ID4884
Article CategoryArticle
AuthorsDai, Shao-Cong (Author), Yan, Wenyi (Author), Liu, Hong-Yuan (Author) and Mai, Yiu-Wing (Author)
Journal TitleComposites Science and Technology
Journal Citation64 (16), pp. 2451-2457
Number of Pages7
Year2004
PublisherElsevier
Place of PublicationOxford, United Kingdom
ISSN0266-3538
1879-1050
Digital Object Identifier (DOI)https://doi.org/10.1016/j.compscitech.2004.04.005
Web Address (URL)http://www.sciencedirect.com/science/article/pii/S0266353804001411
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.

KeywordsZ-pin reinforcement; pullout test; bridging law; interfacial debonding; interfacial friction
ANZSRC Field of Research 2020400504. Construction engineering
401602. Composite and hybrid materials
490109. Theoretical and applied mechanics
Public Notes

© 2004 Elsevier Ltd. All rights reserved. Published version deposited in accordance with the copyright policy of the publisher.

Byline AffiliationsUniversity of Sydney
Computational Engineering and Science Research Centre
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