期刊
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
卷 46, 期 3-4, 页码 741-761出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijsolstr.2008.09.024
关键词
Crack bridging; Cohesive laws; Experiments; Modelling
类别
资金
- EFP2005 fund
- Danish Ministry of Environmental and Energy
The fracture of adhesive joints between two glass-fibre laminates was studied by testing double cantilever beam test specimens loaded by uneven bending moments. A large-scale fracture process zone, consisting of a crack tip and a fibre bridging zone, developed. The mixed mode fracture resistance increased with increasing crack length, eventually reaching a steady-state level (R-curve behaviour). The steady-state fracture resistance level increased with increasing amount of tangential crack opening displacement. Cohesive laws, obtained from fracture resistance data, were used for prediction the load carrying capacity of 2-m long medium size adhesive joint specimens subjected to four point flexure. Medium size specimens were manufactured and tested. A good agreement was found between the predicted and measured strength values of the medium-size specimens. Thus, the scaling from small specimens to medium-size specimens was successfully achieved. (c) 2008 Elsevier Ltd. All rights reserved.
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