High-temperature tensile test specimen and methods of fabrication
AssigneeGeneral Dynamics, Pomona Division
InventorWilson N. Pratt
Life of this patent
Estimating the term…
Abstract
A carbon composite tensile test specimen for high temperature testing and a method of fabricating the same are disclosed. A plurality of holes are drilled in first and second end sections of the specimen and then the end sections are electroplated with nickel. The nickel plating of the end sections prevents breakage of the ends in the jaws of a tensile testing apparatus. For high-temperature testing, a standard-sized specimen may be used with the jaws in the hot zone.
Claims7
A specimen bar of carbon composite material suitable for high-temperature testing in a tensile test apparatus without breaking in the gripping jaws of said apparatus, comprising:
- a first end portion having a plurality of holes therethrough, said first end portion and the circumferential walls of said holes being plated with a layer of nickel;
- a second end portion having a plurality of holes therethrough, said second end portion and the circumferential walls of said holes being plated with a layer of nickel;
- and
- a tensile test portion between said first and second end portions and contiguous therewith.
A specimen bar of carbon composite material suitable for high-temperature testing in a tensile test apparatus without breaking in the gripping jaws of said apparatus, comprising;
- a first end portion having a plurality of holes therethrough and plated with a predetermined thickness of metal;
- a second end portion having a plurality of holes therethrough and plated with a predetermined thickness of metal;
- and
- a tensile test portion between said first and second end portions and contiguous therewith,
- wherein said metal is nickel and said thickness is approximately 0.005 inch.
Dependencies are inferred from the claim text.