کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
279402 | 1430341 | 2009 | 21 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Strength scaling of adhesive joints in polymer–matrix composites Strength scaling of adhesive joints in polymer–matrix composites](/preview/png/279402.png)
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.
Journal: International Journal of Solids and Structures - Volume 46, Issues 3–4, February 2009, Pages 741–761