منابع مشابه
Compressive strength of delaminated aerospace composites.
An efficient analytical model is described which predicts the value of compressive strain below which buckle-driven propagation of delaminations in aerospace composites will not occur. An extension of this efficient strip model which accounts for propagation transverse to the direction of applied compression is derived. In order to provide validation for the strip model a number of laminates we...
متن کاملApplications of ultrasonic NDT to aerospace composites
Whilst existing composite aircraft designs carry additional weight to mitigate the risk of undetected nonconformance to design, new non-destructive characterisation (NDC) methods offer a leaner future for composite designs through complete verification of conformance. The structural-integrity philosophy for composites in current in-service aircraft does not directly accommodate any benefit from...
متن کاملBending strength of delaminated aerospace composites.
Buckling-driven delamination is considered among the most critical failure modes in composite laminates. This paper examines the propagation of delaminations in a beam under pure bending. A pre-developed analytical model to predict the critical buckling moment of a thin sub-laminate is extended to account for propagation prediction, using mixed-mode fracture analysis. Fractography analysis is p...
متن کاملFractographic Analysis of Tensile Failures of Aerospace Grade Composites
This paper describes fractographic features observed in aerospace composites failed under tensile loads. Unidirectional Carbon Fibre Reinforced Plastic (UD CFRP) and Unidirectional Glass Fibre Reinforced Plastic (UD GFRP) composite specimens were fabricated and tested in tension. The morphology of fractured surfaces was studied at various locations to identify failure mechanism and characterist...
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ژورنال
عنوان ژورنال: Mechanical Engineering
سال: 1999
ISSN: 0025-6501,1943-5649
DOI: 10.1115/1.1999-apr-4