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Experimental and numerical investigation of strain distributions within the adhesive layer in bonded joints

journal contribution
posted on 2014-06-17, 10:14 authored by Pablo RuizPablo Ruiz, Furopanyekirim S. Jumbo, Jonathan Huntley, Ian A. Ashcroft, Gerry Swallowe
We present the results of investigations into the strain distributions in the adhesive layers of epoxy-bonded aluminium–aluminium and aluminium–carbon fibre reinforced polymer (Al/CFRP) double-lap shear joints. The area of the adhesive at the end of the overlap region, where high stresses are predicted and failure generally initiates, has been studied at high magnification. 2-D maps of the longitudinal and engineering shear strains in this region have been obtained experimentally by using high magnification moiré interferometry (HMMI). These results have been compared with the strain maps predicted by 3D elastic and elasto-plastic finite element (FE) modelling. Excellent agreement is seen between the experimentally measured and FE-predicted strain distributions, thus validating both methods. In some cases, quantitative comparison of the strains along certain profiles is compromised by noise in the measurements, especially for the Al/CFRP joints, which experienced lower overall strains. The source of such errors is discussed in the paper.

History

School

  • Science

Department

  • Physics

Published in

STRAIN

Volume

47

Issue

1

Pages

88 - 104 (17)

Citation

RUIZ, P.D. ... et al, 2011. Experimental and numerical investigation of strain distributions within the adhesive layer in bonded joints. Strain, 47 (1), pp. 88 - 104.

Publisher

© Blackwell Publishing Ltd

Version

  • VoR (Version of Record)

Publication date

2011

Notes

This article is closed access.

ISSN

1475-1305

Language

  • en