Издательство: | Книга по требованию |
Дата выхода: | июль 2011 |
ISBN: | 978-3-6391-4445-1 |
Объём: | 240 страниц |
Масса: | 387 г |
Размеры(В x Ш x Т), см: | 23 x 16 x 2 |
The response of honeycomb sandwich structure to disbond damage, in a compressive stress field, has been assessed. Two types of disbond were considered; those extending through the full width of a panel (through-width) and those enclosed within the panel boundaries (embedded). For each type of disbond the failure process was established through four-point bend testing of 56 sandwich specimens. For both types of disbond, failure was found to be governed by buckling-driven disbond growth and, consequently, models of buckling and disbond growth were developed. Linear Winkler beam and plate models were used to predict disbond buckling. Non-linear Winkler beam and plate models were then developed to predict post-buckling behaviour and the initiation of disbond growth, through a fracture mechanics analysis. All models showed excellent correlation to test data. The models developed may be used to assess the criticality of disbond damage in sandwich structure having thin-gauge, composite face-sheets.
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