Patent · US Active

Composite inspection

US10571390B2 · kind B2 · utility

4Cited by

44References

21Claims

0Family size

Assignee

The Boeing Company · US

Inventors

William P. Motzer · Seattle, US
Gary E. Georgeson · Tacoma, US
Jill P. Bingham · Seattle, US
Steven K. Brady · Seattle, US
Alan F. Stewart · Seattle, US
James C. Kennedy · Summerville, US
Ivan Pelivanov · Seattle, US
Matthew O'Donnell · Ann Arbor, US
Jeffrey R. Kollgaard · Seattle, US

Key dates

Filing date	Mar 15, 2016
Grant date	Feb 25, 2020
Priority date	—
Expiry date	Mar 15, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG01N2291/2694
WIPO fieldMeasurement
WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.