Quasi-isotropic graphite/epoxy plates were prepared with embedded strain gages between the plies at various locations and loaded under falling weight impact. The load history and imparted energy were obtained by means of an accelerometer attached to the impactor. Transient strains at various locations through the thickness and at various distances from the loading point were obtained. The characteristic features of the strain records are associated with specific failure modes in the laminate. The deformation history was also correlated with the impact-damage as detected by X-radiography and ultrasonics. The objective of this study was to investigate the transient deformation in composite plates during impact and correlate it with the induced damage. Load-history, imparted energy and dynamic load-deflection curves were obtained. Transient strain records were obtained from embedded strain gages at various locations and compared with the induced damage as detected by X-radiography and ultrasonics.
|Original language||English (US)|
|Title of host publication||Unknown Host Publication Title|
|Publisher||Soc for Experimental Mechanics|
|Number of pages||7|
|State||Published - Dec 1 1985|
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