Development of a novel electromagnetic technique for detection of cracks by use of micro antenna

Noriko Sato; Tetsuo Shoji; Yasumoto Sato; Motoyuki Sato

doi:10.1299/kikaia.65.925

Development of a novel electromagnetic technique for detection of cracks by use of micro antenna

Noriko Sato, Tetsuo Shoji, Yasumoto Sato, Motoyuki Sato

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

When alternating current is applied to paramagnetic materials, such as austenitic stainless steels or aluminum alloys, the existence of cracks on the material surface or subsurface causes changes in current flow around them and, as a result, electromagnetic wave generated with this change in current flow can be detected on or near surface of a material. In this case, there is a possibility for detection of these defects by detecting electromagnetic wave by antenna. Hence, the measurements can be done without contact or without removing paint. In this paper, first results on detection of electromagnetic wave around defects with shielded loop antenna is described with a principle of this novel NDI method.

Original language	English
Pages (from-to)	925-931
Number of pages	7
Journal	Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume	65
Issue number	632
DOIs	https://doi.org/10.1299/kikaia.65.925
Publication status	Published - 1999

Keywords

Antenna
Electromagnetic wave
Nondestructive inspection
Surface crack

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1299/kikaia.65.925

Cite this

Development of a novel electromagnetic technique for detection of cracks by use of micro antenna. / Sato, Noriko; Shoji, Tetsuo; Sato, Yasumoto; Sato, Motoyuki.

In: Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, Vol. 65, No. 632, 1999, p. 925-931.

Research output: Contribution to journal › Article › peer-review

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AB - When alternating current is applied to paramagnetic materials, such as austenitic stainless steels or aluminum alloys, the existence of cracks on the material surface or subsurface causes changes in current flow around them and, as a result, electromagnetic wave generated with this change in current flow can be detected on or near surface of a material. In this case, there is a possibility for detection of these defects by detecting electromagnetic wave by antenna. Hence, the measurements can be done without contact or without removing paint. In this paper, first results on detection of electromagnetic wave around defects with shielded loop antenna is described with a principle of this novel NDI method.

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KW - Nondestructive inspection

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Development of a novel electromagnetic technique for detection of cracks by use of micro antenna

Abstract

Keywords

ASJC Scopus subject areas

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