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:
Jan. 22, 2019
Filed:
Jan. 05, 2016
The Boeing Company, Huntington Beach, CA (US);
Sebastian Nervi, St. Louis, MO (US);
Jared L. Bolin, Berkeley, MO (US);
James B. Castle, Rolla, MO (US);
The Boeing Company, Chicago, IL (US);
Abstract
A system and method are provided for estimating initial stresses in and eigenstrains of a material. The system may receive measured geometric data including measurements of a material before and after the application of a manufacturing process thereto. The measurements may indicate a residual stress in a coupon after application of the manufacturing process. Estimated linear elastic strains may be calculated in respective opposing sides of the coupon based on the measured geometric data. A linear elastic reaction of the material to the manufacturing process may be calculated based at least in part on the estimated linear elastic strains. The system may then calculate an estimated initial stress in the material as a sum of the residual stress in the coupon and the linear elastic reaction of the material, and calculate an estimated eigenstrain of the material based at least in part on the estimated initial stress in the material.