Location

Brunswick, ME

Start Date

1-1-1997 12:00 AM

Description

Infrared thermography is a powerful, fast and non contact method for non destructive testing of materials, based on heat conduction. While techniques like pulse or lockin thermography are based on external heat sources, other thermographic techniques, like vibro-lockin thermography, use internal sources of heat, where loss angle effect is involved. One advantage of these latter techniques is that some material features are selectively heated, so that the interpretation of the image can be straightforward. Another advantage is that the heat is generated directly on the defect, allowing to reach greater depths. Some interesting examples of thermographic inspection using ultrasonic heating source are here illustrated.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

16A

Chapter

Chapter 1: Standard Techniques

Section

Thermal Waves

Pages

345-352

DOI

10.1007/978-1-4615-5947-4_45

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Thermographic Inspection with Ultrasonic Excitation

Brunswick, ME

Infrared thermography is a powerful, fast and non contact method for non destructive testing of materials, based on heat conduction. While techniques like pulse or lockin thermography are based on external heat sources, other thermographic techniques, like vibro-lockin thermography, use internal sources of heat, where loss angle effect is involved. One advantage of these latter techniques is that some material features are selectively heated, so that the interpretation of the image can be straightforward. Another advantage is that the heat is generated directly on the defect, allowing to reach greater depths. Some interesting examples of thermographic inspection using ultrasonic heating source are here illustrated.