The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 22, 2016
Filed:
Jan. 11, 2010
Terryl A. Wallace, Yorktown, VA (US);
Stephen W. Smith, Newport News, VA (US);
Robert S. Piascik, Williamsburg, VA (US);
Michael R. Horne, Yorktown, VA (US);
Peter L. Messick, Poquoson, VA (US);
Joel A. Alexa, Hampton, VA (US);
Edward H. Glaessgen, Yorktown, VA (US);
Benjamin T. Hailer, Rome, NY (US);
Terryl A. Wallace, Yorktown, VA (US);
Stephen W. Smith, Newport News, VA (US);
Robert S. Piascik, Williamsburg, VA (US);
Michael R. Horne, Yorktown, VA (US);
Peter L. Messick, Poquoson, VA (US);
Joel A. Alexa, Hampton, VA (US);
Edward H. Glaessgen, Yorktown, VA (US);
Benjamin T. Hailer, Rome, NY (US);
Abstract
A composite material includes a structural material and a shape-memory alloy embedded in the structural material. The shape-memory alloy changes crystallographic phase from austenite to martensite in response to a predefined critical macroscopic average strain of the composite material. In a second embodiment, the composite material includes a plurality of particles of a ferromagnetic shape-memory alloy embedded in the structural material. The ferromagnetic shape-memory alloy changes crystallographic phase from austenite to martensite and changes magnetic phase in response to the predefined critical macroscopic average strain of the composite material. A method of forming a composite material for sensing the predefined critical macroscopic average strain includes providing the shape-memory alloy having an austenite crystallographic phase, changing a size and shape of the shape-memory alloy to thereby form a plurality of particles, and combining the structural material and the particles at a temperature of from about 100-700° C. to form the composite material.