Presenter Information

Jussi Varis, University of Helsinki

Location

La Jolla, CA

Start Date

1-1-1998 12:00 AM

Description

Vertical cracks are among the most problematic types of defects from the thermal nondestructive testing (NDT) point of view. Nowadays, the fast thermal inspection techniques most commonly utilize infrared cameras and pulsed heating provided by flash lamps. The flash lamps illuminate the whole surface of a sample, and the resulting heat flow is mostly perpendicular to the surface. Therefore, the heat signature caused by the vertical cracks may be very small, and the cracks may avoid detection.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

17B

Chapter

Chapter 5: Engineered Materials

Section

Composites

Pages

1223-1227

DOI

10.1007/978-1-4615-5339-7_158

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Detection of Vertical Cracks in Carbon Fiber Composites Using an Infrared Line Scanner

La Jolla, CA

Vertical cracks are among the most problematic types of defects from the thermal nondestructive testing (NDT) point of view. Nowadays, the fast thermal inspection techniques most commonly utilize infrared cameras and pulsed heating provided by flash lamps. The flash lamps illuminate the whole surface of a sample, and the resulting heat flow is mostly perpendicular to the surface. Therefore, the heat signature caused by the vertical cracks may be very small, and the cracks may avoid detection.