The damage field in a precracked particulate composite specimen subjected to a complex cyclic loading history was investigated using acoustic imaging techniques. The acoustic imaging data were analyzed to delineate the damage field ahead of the cracks tips and to generate contour plots of the damage intensity. The results of these analyses were compared and the effect of the loading history on the damage field discussed.
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References
1.
1. Martinson, R. H., and Hartog, J. J., "Acoustic Imaging Applied to Crack Propagation Studies,"1.6th JANNAF Structures and Mechanical Behavior Subcommittee Meeting, CPIA Publication 311, Volume I, March 1980, pp. 321-332.
2.
2. Liu, C. T., and Yee, R."Evaluation of Cumulative Damage in a Composite Solid Propellant,"Proceedings of the 1986 Society for Experimental Mechanics Conference on Experimental Mechanics held June 8-13, 1986 in New Orleans, LA.
3.
3. Liu, C. T., "Investigating the Damage Field Near Crack Tips in a Composite Solid Propellant,"Proceedings of the 1987 Society for Experimental Mechanics Conference on Experimental Mechanics held June 14-19, 1987 in Houston, TX.
4.
4. Liu, C. T., "The Measurement of Damage in a Solid Propellant by Acoustic Imaging Technique,"AIAA/SAE/ASME/SAE 23rd Joint Propulsion Conference held June 29-July 2, 1987 in San Diego, CA.
5.
5. Smith, G. C., Palaniswarmy, K., and Knauss, W. C., The Application of Rate Theory to the Failure of Solid Propellants, AFRPL-TR-73-54, Graduate Aeronautical Laboratories, California Institute of Technology, Pasadena, CA, July 1973.
6.
6. Liu, C. T., "Effects of Cyclic Loading Sequence on Cumulative Damage and Constitutive Behavior of a Composite Solid Propellant,"AIAA/ASME/ASEE/SAE 28th Structures, Structural Dynamics, and Materials Conference held April 6, 1987 in Monterey, CA.
