Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/57832
Title: A simple model for sizing unbonds in foam-adhesive bonded laminates from shearographic fringes
Authors: Shang, H.M. 
Chau, F.S. 
Tay, C.J. 
Toh, S.L. 
Tham, L.M.
Issue Date: 1994
Citation: Shang, H.M.,Chau, F.S.,Tay, C.J.,Toh, S.L.,Tham, L.M. (1994). A simple model for sizing unbonds in foam-adhesive bonded laminates from shearographic fringes. Composites Engineering 4 (2) : 233-245. ScholarBank@NUS Repository.
Abstract: This paper demonstrates the use of double-exposure shearography in detecting and assessing unbonds in foam-adhesive bonded laminates. Unbonds are created artificially by placing mylar sheets between the foam adhesive and the adherends. When the laminates are vacuum-stressed, the unbonds are revealed from perturbations in the fringe patterns. As the foam is highly elastic, the apparent unbond size, described by the boundary of the perturbed fringes, is grossly larger than the actual size of the unbond. A simple model is developed, enabling a reasonably accurate estimation of the unbond size. The findings also suggest that the depth of an unbond may be estimated from shearograms of both sides of the laminate. © 1994.
Source Title: Composites Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/57832
ISSN: 09619526
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

69
checked on Nov 24, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.