Location

Brunswick, ME

Start Date

1-1-1997 12:00 AM

Description

Recently, a novel approach was proposed which combines advantages of both pulse (PT) and modulated (MT) infrared thermography. In a nondestructive evaluation (NDE) perspective, the specimen is pulse-heated as in PT and the mix of frequencies of the thermal waves launched into the specimen are unscrambled by performing the Fourier transform of the temperature time evolution over the field of view. Of interest is the maximum phase image with many attractive features: deeper probing, less influence to surface infrared and optical characteristics, rapid image recording (pulse heating, surface-wide inspection), possibility to inspect high thermal conductivity specimens. The proof-of-concept of this new approach called pulse phase infrared thermography (PPT) was demonstrated earlier [1].

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

16A

Chapter

Chapter 1: Standard Techniques

Section

Thermal Waves

Pages

339-344

DOI

10.1007/978-1-4615-5947-4_44

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Applications of Pulse Phase Thermography

Brunswick, ME

Recently, a novel approach was proposed which combines advantages of both pulse (PT) and modulated (MT) infrared thermography. In a nondestructive evaluation (NDE) perspective, the specimen is pulse-heated as in PT and the mix of frequencies of the thermal waves launched into the specimen are unscrambled by performing the Fourier transform of the temperature time evolution over the field of view. Of interest is the maximum phase image with many attractive features: deeper probing, less influence to surface infrared and optical characteristics, rapid image recording (pulse heating, surface-wide inspection), possibility to inspect high thermal conductivity specimens. The proof-of-concept of this new approach called pulse phase infrared thermography (PPT) was demonstrated earlier [1].