Abstract
A tensile impact test apparatus capable of applying a pure axial tensile loading to even a highly orthotropic composite material, e.g., a unidirectionally reinforced composite, was designed and constructed. Existing impact test methods such as Charpy, Izod and plate impact induce very complex stress states, making the interpretation of results difficult. Details of the apparatus design, and instrumentation problems which had to be overcome, are discussed.
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References
“Impact Resistance of Plastics and Electrical Insulating Materials,” ASTM Standard D256-84, Amer. Soc. Test. and Mat., Philadelphia (1988).
Wyrick, D.A. and Adams, D.F., “The Effects of Repeated Impact on a Carbon/Epoxy Composite Material,” Rep. UWME-DR-701-101-0, Dept. of Mech. Eng., Univ. of Wyoming (May 1987).
Wyrick, D.A. andAdams, D.F., “Residual Strength of a Carbon/Epoxy Composite Material Subjected to Repeated Impact,”J. Comp. Mat.,22 (8),749–765 (Aug.1988).
Winkel, J.D. and Adams, D.F., “Instrumented Drop Weight Impact Testing of Composite Materials,” UWME-DR-301-108-0 (Dept. of Mech. Eng., Univ. of Wyoming (Dec. 1983).
Winkel, J.D. andAdams, D.F., “Instrumented Drop Weight Impact Testing of Cross-ply and Fabric Composites,”Composites,16 (4),268–278 (Oct.1985).
Plenger, J.H., “Tensile and Charpy Impact Testing of Unidirectional Composite Materials,” Masters Thesis, Dept. of Mech. Eng., Univ. of Wyoming, Laramie, WY (Dec. 1975).
“Tensile-Impact Energy to Break Plastics and Electrical Insulating Materials,” ASTM Standard D 1822–79, Amer. Soc. Test. and Mat., Philadelphia (1988).
Huber, F.T., Unpublished work, Dept. of Mech. Eng., Univ. of Wyoming, Laramie, WY (1977).
Benson, R.A. and Adams, D.F., “An Instrumented Tensile Impact Test Method for Composite Materials,” Proc. 25th Nat. SAMPE Symp. and Exhibition,25,SAMPE, San Diego (May 1980).
Hayes, S.V. andAdams, D.F., “Rate Sensitive Tensile Impact Properties of Fully and Partially Loaded Unidirectional Composites,”J. Test. and Eval.,10 (2),61–68 (March1982).
Adams, D.F. and Adams, L.G., “Tensile Impact Tests of Unidirectional Composites and the Polymer Matrix,” submitted for publication in the J. Comp. Mat.
Adams, L.G. and Adams, D.F., “Tensile Impact Testing of Unidirectional Composites and the Unreinforced Polymer Matrix,” Dept. Rep. UWME-DR-601-102-0, Dept. of Mech. Eng., Univ. of Wyoming (May 1986).
Hopkinson, B., “A Method of Measuring the Pressure Produced in the Deformation of High Explosives or by the Impact of Bullets,”Phil. Trans. Roy. Soc.,A (213),437–456 (1964).
Harding, J. and Welsh, L.M., “Impact Testing of Fibre-Reinforced Composite Materials,” Progress in Science and Engineering of Composites, ed. T. Hayashi, K. Kawata and S. Umekawa, ICCM-IV, Tokyo, 845–852 (1982).
Kawata, K., Hashimoto, S. and Takeda, N., “Mechanical Behaviors in High Velocity Tension of Composites,” Progress in Science and Engineering of Composites, ed. T. Hayashi, K. Kawata and S. Umekawa, ICCM-IV, Tokyo, 829–836 (1982).
Kistler Instrumente AG, CH-8408 Winterthur, Switzerland.
PCB Piezotronics, Inc., P.O. Box 33, Buffalo, NY 14225.
Micro-Measurements Division, P.O. Box 306, Romulus, MI 48174.
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was Graduate Student, Composite Materials Research Group, P.O. Box 3295, University of Wyoming, Laramie, WY 82071.
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Adams, D.F., Adams, L.G. A tensile impact test apparatus for composite materials. Experimental Mechanics 29, 466–473 (1989). https://doi.org/10.1007/BF02323869
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DOI: https://doi.org/10.1007/BF02323869