Abstract
Stress wave emission (SWE) and dynamic mechanical methods are described for monitoring the damage introduced into certain glass fibre-reinforced epoxy specimens by the application of a tensile load. For one particular composite system, a cross-ply laminate, it was possible to measure the concentration of damage by an independent optical method and correlations have been found between the SWE and dynamic mechanical results and the area of cracking. It remains to be established whether these correlations apply to other reinforcement geometries. This work is considered a first stage towards using these methods for monitoring the integrity of a component in service, from which its remaining life might be assessed.
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Sandwich course student; now returned to Brunel University.
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Sims, G.D., Dean, G.D., Read, B.E. et al. Assessment of damage in GRP laminates by stress wave emission and dynamic mechanical measurements. J Mater Sci 12, 2329–2342 (1977). https://doi.org/10.1007/BF00552254
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DOI: https://doi.org/10.1007/BF00552254