Development of reliable design rules for adhesively bonded joints loaded in fatigue
conference paper
Design rules considering fatigue for practical applications are mostly based on spectra representing the cyclic loading and the so-called SN-curves (Wohler curves). For welded and mechanically fasted joints the reliability of these design ruiles is proved over the years. For adhesive bonded joints on the other hand a prototype is mostly validated by testing, since no general accepted design approach is available. Within this paper a proposal is given how to develop design rules for adhesive bonded joints loaded in fatigue. It is explained why and how to modify load spectra. Based on test series for various kinds of adhesives, a general formulation of SN-curves is given, which takes both the load level as well as the maximum load into account. It is also explained how to quantify the required reliability (safety) level of a design with use of probabilistic techniques. Finally recommendations are given for future research, considering the formulation of standard spectra, the classification of details, application of fracture mechanics, and experimetnal validation of the approach
TNO Identifier
516288
Source title
Adhesion '05. Ninth International Conference on the Science and Technology of Adhesion and Adhesives, 7-9 September, 2005, St. Catherine's College, University of Oxford, UK
Pages
168-171
Files
To receive the publication files, please send an e-mail request to TNO Repository.