Impact damage in small diameter graphite/epoxy composite strutsAn investigation was performed to study impact induced damage in small-diameter struts made of a composite material with a brittle matrix system. The major focus is on characterizing the impact behavior associated with the barely visible damage. An experimental procedure including ultrasonic inspection, instrumented impact testing, and delamination buckling and residual strength measurements is presented. From the ultrasonic inspection, it is found that for the strut specimens under investigation, the impact energy level for barely visible damage threshold is above that of the internal damage threshold. A 60- to 65-percent reduction in compressive strength was typical for struts subjected to the barely visible impact damage threshold.
Document ID
19920051954
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chen, G.-S. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bidinger, G. M. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Cho, S. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Lou, M. C. (JPL Pasadena, CA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
Composite Materials
Report/Patent Number
AIAA PAPER 92-2430
Meeting Information
Meeting: AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference