The low-velocity impact response of a hybrid titanium composite laminate, known as , was compared to that of graphite/epoxy composite. The material comprised of two outer plies of titanium foil surrounding a composite core. The composite core was PIXA-M (a high temperature thermoplastic) reinforced by IM-6 graphite fibers and consolidated by an induction heating process. The impact response of was characterized by two modes of failure which differed by failure or nonfailure in tension of the bottom titanium ply. The ductility of titanium caused buckling by yielding whereas the brittle adjacent composite ply lead to fracture. The maximum failure force of the material correlated well with the previously reported static flexural data, and the material outperformed the commonly used graphite/epoxy.
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e-mail: ramulum@u.washington.edu
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April 2007
Technical Papers
Low-Velocity Impact Response Characterization of a Hybrid Titanium Composite Laminate
S. Bernhardt,
S. Bernhardt
Department of Mechanical Engineering,
University of Washington
, Seattle, WA 98195
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M. Ramulu,
M. Ramulu
Department of Mechanical Engineering,
e-mail: ramulum@u.washington.edu
University of Washington
, Seattle, WA 98195
Search for other works by this author on:
A. S. Kobayashi
A. S. Kobayashi
Department of Mechanical Engineering,
University of Washington
, Seattle, WA 98195
Search for other works by this author on:
S. Bernhardt
Department of Mechanical Engineering,
University of Washington
, Seattle, WA 98195
M. Ramulu
Department of Mechanical Engineering,
University of Washington
, Seattle, WA 98195e-mail: ramulum@u.washington.edu
A. S. Kobayashi
Department of Mechanical Engineering,
University of Washington
, Seattle, WA 98195J. Eng. Mater. Technol. Apr 2007, 129(2): 220-226 (7 pages)
Published Online: July 13, 2006
Article history
Received:
November 28, 2005
Revised:
July 13, 2006
Citation
Bernhardt, S., Ramulu, M., and Kobayashi, A. S. (July 13, 2006). "Low-Velocity Impact Response Characterization of a Hybrid Titanium Composite Laminate." ASME. J. Eng. Mater. Technol. April 2007; 129(2): 220–226. https://doi.org/10.1115/1.2400272
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