Experimental study on z-pin bridging law by pull-out tests

Hong Yuan Liu, Wenyi Yan, Shao Cho Dai, Yiu Wing Mai

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

2 Citations (Scopus)


This paper presents an experimental study on the z-pin bridging law. The relationship between the z-pin bridging force and its displacement was measured by z-pin pull-out tests. Three types of samples were examined, which included single small pin; 3×3-small-pin (three columns×three rows) and 3×3-big-pin samples. For 3×3-small-pin samples, a typical pull-out curve with initial elastic bonding, unstable 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. The difference between the peak debonding force and the frictional pull-out force decreased with increasing loading rate. However, for samples with big pins, it was difficult to discern the peak debonding force.

Original languageEnglish
Title of host publicationCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Number of pages5
Publication statusPublished - 28 Aug 2003
Externally publishedYes
Event44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference - Norfolk, VA, United States of America
Duration: 7 Apr 200310 Apr 2003


Conference44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
Country/TerritoryUnited States of America
CityNorfolk, VA

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