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:
Feb. 25, 2020
Filed:
Mar. 15, 2016
The Boeing Company, Chicago, IL (US);
University of Washington, Seattle, WA (US);
William P. Motzer, Charleston, SC (US);
Gary Ernest Georgeson, Tacoma, WA (US);
Jill Paisley Bingham, Seattle, WA (US);
Steven Kenneth Brady, Renton, WA (US);
Alan F. Stewart, Seattle, WA (US);
James C. Kennedy, Summerville, SC (US);
Ivan Pelivanov, Seattle, WA (US);
Matthew O'Donnell, Seattle, WA (US);
Jeffrey Reyner Kollgaard, Seattle, WA (US);
The Boeing Company, Chicago, IL (US);
Abstract
A method of detecting local material changes in a composite structure is presented. A pulsed laser beam is directed towards the composite structure comprised of a number of composite materials. Wide-band ultrasonic signals are formed in the composite structure when radiation of the pulsed laser beam is absorbed by the composite structure. The wide-band ultrasonic signals are detected to form data. The data is processed to identify a local frequency value for the composite structure. The local frequency value is used to determine if local material changes are present in the number of composite materials.