Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Buckling and postbuckling behaviour of glare laminates containing splices and doublers. Part 1: instrumented tests

Al-Azzawi, Ahmad S. M. ORCID:, McCrory, John, Kawashita, Luiz F., Featherston, Carol A. ORCID:, Pullin, Rhys ORCID: and Holford, Karen M. ORCID: 2017. Buckling and postbuckling behaviour of glare laminates containing splices and doublers. Part 1: instrumented tests. Composite Structures 176 , pp. 1158-1169. 10.1016/j.compstruct.2017.04.030

[thumbnail of Al-Azzawi_Buckling_part 1.pdf]
PDF - Accepted Post-Print Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (3MB) | Preview


The progressive damage and fracture behaviour of Glare® fibre-metal laminates (FMLs) was investigated experimentally for the buckling and post- buckling regimes of laminates containing internal ‘splice’ and ‘doubler’ joints. Specimens were either ‘pristine’ or contained artificial delaminations in the form of strips of release film to represent manufacturing defects. Each was tested under in-plane compression. Tests were monitored using digital image correlation (DIC) for visualisation of three-dimensional full-field displacements whilst acoustic emission (AE) monitoring – combined with the novel Delta-T location algorithm – was used for the first time to detect and locate damage events in these FML structures. Results were validated using Scanning Electron Microscopy (SEM) to determine the damage mechanisms present. Large numbers of AE events were recorded at the splice and doubler locations during initial loading and throughout the postbuckling regime,suggesting that the novel AE location algorithm used is suitable for the monitoring of delaminations and matrix cracks in internal features in Glare® laminates. Moreover, AE events located away from internal features correlated well with buckling and postbuckling deformation as identified by the full- field DIC data. Finally, good correlation was observed between the onset of buckling and a rapid increase in cumulative AE energy, demonstrating that as well as locating damage, AE monitoring is able to indicate quite clearly when the buckling load has been reached.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: Q Science > Q Science (General)
Uncontrolled Keywords: Glare, Buckling, Postbuckling, Delamination, Acoustic Emission, DIC, SEM
Publisher: Elsevier
ISSN: 0263-8223
Date of First Compliant Deposit: 12 May 2017
Date of Acceptance: 13 April 2017
Last Modified: 05 Jan 2024 16:59

Citation Data

Cited 18 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item


Downloads per month over past year

View more statistics