Accession Number:

ADD020450

Title:

Method of Laser Vibration Defect Analysis

Descriptive Note:

Patent application, Filed 4 Jun 2010

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

2010-06-04

Pagination or Media Count:

36.0

Abstract:

A method for locating defects in a target includes subjecting the target to an ultrasonic vibration. A first laser beam is then transmitted to the target and a reflection is received. A vibration - signal is produced from the reflection that gives the targets response to the ultrasonic vibration. A digital image is produced of the target that includes the region of the first laser beam reflection. The digital images are overlaid with the vibration signal to provide overlaid data. The overlaid data is tested to determine a probability of the overlaid data being non-random. The probability is compared against a threshold to indicate a potential area of concern that may include defects.

Subject Categories:

  • Lasers and Masers
  • Civil Engineering
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE