DataVXAdvanced Composite MaterialsPaper
journal article·2012-02-01

Effect of Anisotropic Properties on Defect Detection by Pulse Phase Thermography

Masashi Ishikawa, Hiroshi Hatta, Yoshio Habuka, Sayaka Jinnai, Shin Utsunomiya

Advanced Composite Materials· Volume 21· Issue 1
Publisher page
Source abstract

Abstract

Abstract The influence of anisotropic thermal diffusivities on non-destructive testing of CFRP laminates using pulse phase thermography (PPT) was studied analytically. The results show that the optimum frequency for maximizing detectable depths of defects increases concomitantly with the increase in the ratio of the thermal diffusivities in the through-thickness direction to that in the in-plane direction . Furthermore, the phase difference between sound and defective areas decreases significantly with decreased . These predicted tendencies were verified through experiments. Experimental results also demonstrated that defects of 10 mm in diameter can be detected up to around 5 mm depth in CFRP with lower but only to around 1 mm in CFRP with higher
Source: openalex_inverted_index · Quality: baseline

Research context

Composites

OpenAlex topics: Thermography and Photoacoustic Techniques · Ultrasonics and Acoustic Wave Propagation · Industrial Vision Systems and Defect Detection

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Affiliations

a The Graduate University for Advanced Studies (Sokendai) , 3-1-1 Yoshinodai Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan

b The Graduate University for Advanced Studies (Sokendai)/Japan Aerospace Exploration Agency , 3-1-1 Yoshinodai Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan

c Krautkramer Japan , Co., Ltd., 4th Floor Totojidosha Bldg. 5-13-3 Nishiikebukuro, Toshima-ku, Tokyo 171-0021, Japan

d Japan Aerospace Exploration Agency , 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan

References

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