Laser scanning thermal probe: A novel approach to non-destructive evaluation

Jacob Kephart, John Chen, Hong Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Structural defects such as cracks have recently been identifiable through a new nondestructive evaluation (NDE) technique know as sonic IR or thermosonics. However, these defects are depicted through thermal imagining system as localized "hot spots" indicating a general location of a defect without an accurate portrayal of the dimensions or shape of the defect. This paper demonstrates a new technique called Laser Scanning Thermal Probe, LSTP, which utilizes thermography with the use of heat application in strategic locations to observe spatial heat flow patterns. The LSTP records heat propagation across a defect area previously identified through the thermosonic technique. Thermal gradients will occur as heat traverses the crack and provide information to characterize the crack such as its length and shape.

Original languageEnglish (US)
Title of host publicationReview of Progress in Quantitative Nondestructive Evaluation Volume 24
Pages1608-1615
Number of pages8
DOIs
StatePublished - Apr 9 2005
EventReview of Progress in Quantitative Nondestructive Evaluation - Golden, CO, United States
Duration: Jul 25 2004Jul 30 2004

Publication series

NameAIP Conference Proceedings
Volume760
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherReview of Progress in Quantitative Nondestructive Evaluation
Country/TerritoryUnited States
CityGolden, CO
Period7/25/047/30/04

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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