A method for sizing small fatigue cracks in stainless steel using microwaves

Masumi Saka; Yang Ju; Daying Luo; Hiroyuki Abé

doi:10.1299/jsmea.45.573

A method for sizing small fatigue cracks in stainless steel using microwaves

Masumi Saka, Yang Ju, Daying Luo, Hiroyuki Abé

ENG - Finemechanics

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

13 Citations (Scopus)

Abstract

To evaluate the depth of small fatigue cracks under conditions of no contact and without using any coupling medium, a novel microwave technique was demonstrated. An open-ended coaxial line sensor was used to increase the spatial resolution and the ratio of signal to noise. Closed fatigue cracks were detected successfully and a W - shaped characteristics signal was obtained. A dual frequency technique was proposed to evaluate the depth of small fatigue cracks for which crack closure characteristics were unknown. The evaluated results are shown to agree well with the actual values.

Original language	English
Pages (from-to)	573-578
Number of pages	6
Journal	JSME International Journal, Series A: Solid Mechanics and Material Engineering
Volume	45
Issue number	4
DOIs	https://doi.org/10.1299/jsmea.45.573
Publication status	Published - 2002 Oct

Keywords

Coaxial line sensor
Crack closure
Crack depth
Fatigue crack
Microwave
Nondestructive evaluation

ASJC Scopus subject areas

Materials Science(all)
Mechanical Engineering

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title = "A method for sizing small fatigue cracks in stainless steel using microwaves",

abstract = "To evaluate the depth of small fatigue cracks under conditions of no contact and without using any coupling medium, a novel microwave technique was demonstrated. An open-ended coaxial line sensor was used to increase the spatial resolution and the ratio of signal to noise. Closed fatigue cracks were detected successfully and a W - shaped characteristics signal was obtained. A dual frequency technique was proposed to evaluate the depth of small fatigue cracks for which crack closure characteristics were unknown. The evaluated results are shown to agree well with the actual values.",

keywords = "Coaxial line sensor, Crack closure, Crack depth, Fatigue crack, Microwave, Nondestructive evaluation",

author = "Masumi Saka and Yang Ju and Daying Luo and Hiroyuki Ab{\'e}",

year = "2002",

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doi = "10.1299/jsmea.45.573",

language = "English",

volume = "45",

pages = "573--578",

journal = "JSME International Journal, Series A: Solid Mechanics and Material Engineering",

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publisher = "Japan Society of Mechanical Engineers",

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TY - JOUR

T1 - A method for sizing small fatigue cracks in stainless steel using microwaves

AU - Saka, Masumi

AU - Ju, Yang

AU - Luo, Daying

AU - Abé, Hiroyuki

PY - 2002/10

Y1 - 2002/10

N2 - To evaluate the depth of small fatigue cracks under conditions of no contact and without using any coupling medium, a novel microwave technique was demonstrated. An open-ended coaxial line sensor was used to increase the spatial resolution and the ratio of signal to noise. Closed fatigue cracks were detected successfully and a W - shaped characteristics signal was obtained. A dual frequency technique was proposed to evaluate the depth of small fatigue cracks for which crack closure characteristics were unknown. The evaluated results are shown to agree well with the actual values.

AB - To evaluate the depth of small fatigue cracks under conditions of no contact and without using any coupling medium, a novel microwave technique was demonstrated. An open-ended coaxial line sensor was used to increase the spatial resolution and the ratio of signal to noise. Closed fatigue cracks were detected successfully and a W - shaped characteristics signal was obtained. A dual frequency technique was proposed to evaluate the depth of small fatigue cracks for which crack closure characteristics were unknown. The evaluated results are shown to agree well with the actual values.

KW - Coaxial line sensor

KW - Crack closure

KW - Crack depth

KW - Fatigue crack

KW - Microwave

KW - Nondestructive evaluation

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M3 - Article

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VL - 45

SP - 573

EP - 578

JO - JSME International Journal, Series A: Solid Mechanics and Material Engineering

JF - JSME International Journal, Series A: Solid Mechanics and Material Engineering

SN - 1344-7912

IS - 4

ER -

A method for sizing small fatigue cracks in stainless steel using microwaves

Abstract

Keywords

ASJC Scopus subject areas

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