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Title: Damage tolerance of composite stiffened structures
Author: Kontis, Nikolaos
ISNI:       0000 0001 3601 7654
Awarding Body: University of Bath
Current Institution: University of Bath
Date of Award: 2008
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Composite stiffened panels have been extensively used in primary aerospace applications, due to their efficient stiffness/weight ratio and the ability to tailor properties. Despite their apparent superiority to metals, the susceptibility of composites to damage has proved to be a critical factor. A common example in practice is the barely visible impact damage caused by a low velocity impact event. Such events can generate inter-laminar defects (delaminations), which under compressive loading can reduce the strength and stability of the structure. There is a need to establish the influence of such damage on composite stiffened structures. Current practice allows for delamination induced strength reduction by applying strain limits to the material that ensure delamination does not produce failure before uhimate levels of loading. However, these limits are established via coupon tests, which focus on the scale of the delamination only and do not account for the interaction at the structural scale.
Supervisor: Hunt, Giles Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available