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Moiré interferometry analysis of fiber debonding

Easley, Thomas C. and Faber, K. T. and Shah, Surendra P. (2001) Moiré interferometry analysis of fiber debonding. Journal of Engineering Mechanics, 127 (6). pp. 625-629. ISSN 0733-9399. doi:10.1061/(ASCE)0733-9399(2001)127:6(625).

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Progressive fiber debonding in steel fiber/cementitious matrix composites has been studied using a single fiber pullout test that permits simultaneous measurements of the load versus crack opening displacement relationship and Moiré interferometry fringe patterns. Analysis of Moiré interferometry patterns allows the fiber axial and interfacial shear stresses to be calculated along the entire fiber length. The interfacial shear stress distribution along the debonded length of the fiber indicates a steep decrease in shear stress with interfacial slip, from 6 to 1 MPa for 7 μm of fiber slip and a crack opening displacement of 22 μm. These results suggest that improvements in the toughness of cement-based composites could be achieved by developing materials in which the decrease in shear stress is less severe.

Item Type:Article
Related URLs:
URLURL TypeDescription
Faber, K. T.0000-0001-6585-2536
Shah, Surendra P.0000-0002-3367-2394
Additional Information:© 2001 ASCE. The manuscript for this technical note was submitted for review and possible publication on December 22, 1999; revised December 6, 2000.
Issue or Number:6
Record Number:CaltechAUTHORS:20140908-181323191
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Official Citation:Thomas C. Easley, K. T. Faber, and Surendra P. Shah (2001). ”Moiré Interferometry Analysis of Fiber Debonding.” J. Eng. Mech., 127(6), 625–629.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49392
Deposited By: George Porter
Deposited On:09 Sep 2014 17:59
Last Modified:10 Nov 2021 18:43

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