Effect of the size reduction on the bulk tensile and double cantilever beam specimens used in cohesive zone models

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Costa, M (Author) Other; Viana, G (Author) Other; Canto, C (Author) Other; da Silva, LFM (Author) FEUP; Banea, MD (Author) Other; Chaves, F (Author) Other; Campilho, RDSG (Author) Other; Fernandes, AA (Author) FEUP

Journal

Title: Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications

Vol. 230

Pages: 968-982

ISSN: 1464-4207

Publisher: SAGE

Indexing

ISI Web of Knowledge - 5 Citations

Scopus - 9 Citations

Other information

Authenticus ID: P-00K-XJQ

DOI: 10.1177/1464420715610248

Abstract (EN): Cohesive zone elements used in finite element analysis are a reliable way to design and predict the behaviour of the joint. The characterisation of the traction separation law used in these models is done using tensile and fracture tests, and the parameters of such laws depend on humidity and temperature. Water diffusion tests are therefore necessary, which are dependent on specimen geometry, meaning a bigger specimen takes longer to fully saturate. To solve this problem and increase the efficiency of the ageing process, smaller tensile bulk and double cantilever beam (DCB) specimens are necessary. Another advantage of smaller DCB specimens is that they can be tested in smaller high-temperature chambers, where normal DCB specimens do not fit. Smaller geometries of the bulk tensile and DCB tests are analysed, and a proposed geometry for each test is shown to produce very satisfactory results, validating the use of these specimens.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 15