Probabilistic Strength Prediction of Adhesively Bonded Joints Composed of Heterogeneous Materials

Title: Probabilistic Strength Prediction of Adhesively Bonded Joints Composed of Heterogeneous Materials
Author(s): T. Tannert, T. Vallée, S. Hehl
Paper category : conference
Book title: International RILEM Conference on Material Science
Editor(s): W. Brameshuber
Print-ISBN: 978-2-35158-108-7
e-ISBN: 978-2-35158-109-4
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 93 - 100
Total Pages: 8
Nb references: 9
Language: English

Abstract: The strength prediction of adhesively bonded joints composed of heterogeneous fibre-reinforced materials such as composites and timber is difficult due to the anisotropic and brittle nature of the adherends, the complex stress distribution as well as the uncertainties regarding the associated material resistances. This paper describes a numerical model and a probabilistic method for the strength prediction of balanced double lap joints composed of the above mentioned adherends and epoxy adhesives. The method considers the scale sensitivity of material strength modelled using a Weibull statistical function, presents an explanation for the increased resistance of local zones subjected to stress peaks and allows safely predicting the strength of adhesively bonded joints composed of brittle adherends. Finally, the paper shows how probabilistic methods have to be formulated in the framework of current codes.

Online publication: 2010-12-02
Publication type : full_text
Public price (Euros): 0.00