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An automated methodology for mode II delamination tests under fatigue loading based on the real time monitoring of the specimen’s compliance

This work introduces a procedure based on the real time monitoring of the specimen’s compliance for the experimental characterization of the fatigue behaviour of interlaminar cracks in composites. The methodology was applied to a mode II loading in a three-point end notch flexure test. The onset point for fatigue damage was determined with a precision of one cycle by establishing a threshold on the compliance variation from its initial value. On the other hand, the crack growth rate curve was derived from the continuous monitoring of the compliance and an experimental calibration of said compliance. The precision of this methodology allowed the effect of commonly neglected phenomena such as the thermal expansion of the testing system or the friction between the specimen and the fixture, to be unveiled

This work has been funded by the Spanish Minsterio de Economía y Competitividad through the project MAT2012-37552-C03-03

© International Journal of Fatigue, 2016, vol. 82, núm. 3, p. 634-642

Elsevier

Author: Renart Canalias, Jordi
Vicens Cuyàs, Josep
Budhe, Sandip Rudha
Rodríguez Bellido, Ana Teresa
Comas Baron, Jordi
Mayugo Majó, Joan Andreu
Costa i Balanzat, Josep
Date: 2016
Abstract: This work introduces a procedure based on the real time monitoring of the specimen’s compliance for the experimental characterization of the fatigue behaviour of interlaminar cracks in composites. The methodology was applied to a mode II loading in a three-point end notch flexure test. The onset point for fatigue damage was determined with a precision of one cycle by establishing a threshold on the compliance variation from its initial value. On the other hand, the crack growth rate curve was derived from the continuous monitoring of the compliance and an experimental calibration of said compliance. The precision of this methodology allowed the effect of commonly neglected phenomena such as the thermal expansion of the testing system or the friction between the specimen and the fixture, to be unveiled
This work has been funded by the Spanish Minsterio de Economía y Competitividad through the project MAT2012-37552-C03-03
Format: application/pdf
ISSN: 0142-1123
Document access: http://hdl.handle.net/10256/12376
Language: eng
Publisher: Elsevier
Collection: MINECO/PN 2013-2015/MAT2012-37552-C03-03
Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.ijfatigue.2015.09.021
Articles publicats (D-EMCI)
Is part of: © International Journal of Fatigue, 2016, vol. 82, núm. 3, p. 634-642
Rights: Tots els drets reservats
Subject: Materials compostos -- Deslaminatge
Composite materials -- Delamination
Materials compostos -- Fatiga
Composite materials -- Fatigue
Assaigs de materials
Materials -- Testing
Title: An automated methodology for mode II delamination tests under fatigue loading based on the real time monitoring of the specimen’s compliance
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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