An experimental compliance calibration strategy for mixed-mode bending tests

被引：8

作者：

Bennati, Stefano ^{[1
]}

Valvo, Paolo S. ^{[1
]}

机构：

[1] Univ Pisa, Dept Civil & Ind Engn, I-56122 Pisa, PI, Italy

来源：

20TH EUROPEAN CONFERENCE ON FRACTURE | 2014年 / 3卷

关键词：

mixed-mode fracture; energy release rate; virtual crack closure technique; BEAM-THEORY MODEL;

D O I：

10.1016/j.mspro.2014.06.320

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

We have developed an enhanced beam theory model of the mixed-mode bending (MMB) test, where the delaminated specimen is schematised as an assemblage of sublaminates connected by an elastic interface. We show how the interface parameters can be estimated through an experimental compliance calibration strategy. First, double cantilever beam (DCB) and end notched flexure (ENF) tests are conducted and the specimens' compliance is measured. Then, a nonlinear least squares fitting procedure furnishes the values of the elastic interface constants. Such calibrated values can be used to interpret the results of MMB tests.(C) 2014 Published by Elsevier Ltd.

引用

页码：1988 / 1993

页数：6

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[2]

AECMA, 1995, 60331995 AECMA PREN

[3]

[Anonymous], 1995, 60341995 AECMA PREN

[4]

ASTM, 2006, D6671D6671M06 ASTM