کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
770732 1463112 2013 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of the adhesive thickness on a debonding – An asymptotic model
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Influence of the adhesive thickness on a debonding – An asymptotic model
چکیده انگلیسی


• Debonding of adhesive assemblies.
• Single and double lap joints.
• Asymptotic model.
• Role of the adhesive thickness.
• Sensitivity to defects.

The role of the adhesive thickness in the failure of bonded joints is a controversial issue. On the one hand, analytical and numerical models show that the bonding strength is improved as the adhesive thickness increases, on the other hand experimental observations lead to the opposite conclusion. Taking advantage of the thinness of the adhesive layer when compared to the overall dimensions of the structure, a matched asymptotic expansions procedure allows modeling the initiation of a debonding in a single or double lap joint assembly. If there is a perfect adhesion between the joint and the substrates, the conclusion is identical to the first mentioned. In case of an imperfect bonding, i.e. if there is a micro-crack close to the end of the bonding zone, the trend is reversed and the conclusion meets the experimental observations. Special cases of thick and thin interfaces are highlighted as well as the sensitivity to flaw size.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 114, December 2013, Pages 55–68
نویسندگان
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