Experimental analysis of mode I crack propagation in adhesively bonded joints by optical backscatter reflectometry and comparison with digital image correlation

被引：22

作者：

Lima, R. A. A. ^{[1
]}

Perrone, R. ^{[1
]}

Carboni, M. ^{[1
]}

Bernasconi, A. ^{[1
]}

机构：

[1] Politecn Milan, Dept Mech Engn, Milan, Italy

来源：

THEORETICAL AND APPLIED FRACTURE MECHANICS | 2021年 / 116卷

关键词：

Adhesive bonded joints; Crack propagation; Digital image correlation; Optical backscatter reflectometry; DOUBLE-CANTILEVER BEAM; GROWTH-BEHAVIOR; LAP JOINTS; ZONE;

D O I：

10.1016/j.tafmec.2021.103117

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The relationship between the response of backface strain distributed sensing by Optical Backscatter Reflectometry and the damage in the adhesive was studied using double cantilever beam specimens. Digital Image Correlation and visual inspection provided information about the crack-tip position and the extension of the cohesive process zone. The comparison between the features of the backface strain pattern and the position and size of the cohesive zone led to the conclusion that, for the studied adhesive, backface distributed sensing allows for the onset of plastic deformations ahead of the crack-tip to be identified, opening new perspectives for fatigue crack monitoring and in-service measurements.

引用

页数：14

共 43 条

[1] Effect of adhesion defects on crack propagation in double cantilever beam test [J].