A wide-ranging fractographic research programme, from the fundamental characterisation of testcoupon fracture to the failure analysis of full-scale aerospace components, has been undertaken in Materials and Structures Department, RAE. This paper describes work on unidirectional CFRP test coupons in which a known mode of failure had been produced, the modes being longitudinal and transverse tension, compression and shear. From a fundamental understanding of the character of the different modes and of the mechanisms of fracture propagation it is shown how the qualitative significance of 'micro-defects' occurring in good quality laminates may be assessed. The defects considered are fibre faults, fibre-matrix bond strength, fibre distribution, fibre alignment and voids and inclusions; these are illustrated and their individual and collective significance discussed.
Fractographic analysis of failures in CFRP
Fraktographische Analyse von Fehlern in KFK
1983
11 Seiten, 36 Bilder
Aufsatz (Konferenz)
Englisch
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