Application of A.C. Potential Drop Technique to Measure the Stress-Intensity Factor

Masumi Saka; Masahito Nakayama; Hiroyuki Abe

doi:10.1299/kikaia.56.1855

Application of A.C. Potential Drop Technique to Measure the Stress-Intensity Factor

Masumi Saka, Masahito Nakayama, Hiroyuki Abe

ENG - Finemechanics

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

Abstract

An a.c. potential drop technique is applied for measurement of the stress-intensity factor, K1. When a conductive material with a surface crack is loaded under a flow of a.c, a change occurs in electrical potential difference between two points located on either side of the surface separated by the crack. By measuring the change for different loadings, it is found that the change shows a linear relationship with the change in K₁. Also, the relationship is revealed to be independent of the crack depth. A.c. in the amount of 1 ampere with a frequency of 10 kHz is used. Finally, a procedure for applying the present result to an in situ measurement of K₁, is proposed and verified.

Original language	English
Pages (from-to)	1855-1860
Number of pages	6
Journal	Transactions of the Japan Society of Mechanical Engineers Series A
Volume	56
Issue number	528
DOIs	https://doi.org/10.1299/kikaia.56.1855
Publication status	Published - 1990

Keywords

A.C. Potential-Drop Technique
Fracture
In situ Measurement
Linear Relationship
Stress-Intensity Factor
Surface Crack

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1299/kikaia.56.1855

Cite this

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title = "Application of A.C. Potential Drop Technique to Measure the Stress-Intensity Factor",

abstract = "An a.c. potential drop technique is applied for measurement of the stress-intensity factor, K1. When a conductive material with a surface crack is loaded under a flow of a.c, a change occurs in electrical potential difference between two points located on either side of the surface separated by the crack. By measuring the change for different loadings, it is found that the change shows a linear relationship with the change in K1. Also, the relationship is revealed to be independent of the crack depth. A.c. in the amount of 1 ampere with a frequency of 10 kHz is used. Finally, a procedure for applying the present result to an in situ measurement of K1, is proposed and verified.",

keywords = "A.C. Potential-Drop Technique, Fracture, In situ Measurement, Linear Relationship, Stress-Intensity Factor, Surface Crack",

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year = "1990",

doi = "10.1299/kikaia.56.1855",

language = "English",

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journal = "Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A",

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}

TY - JOUR

T1 - Application of A.C. Potential Drop Technique to Measure the Stress-Intensity Factor

AU - Saka, Masumi

AU - Nakayama, Masahito

AU - Abe, Hiroyuki

PY - 1990

Y1 - 1990

N2 - An a.c. potential drop technique is applied for measurement of the stress-intensity factor, K1. When a conductive material with a surface crack is loaded under a flow of a.c, a change occurs in electrical potential difference between two points located on either side of the surface separated by the crack. By measuring the change for different loadings, it is found that the change shows a linear relationship with the change in K1. Also, the relationship is revealed to be independent of the crack depth. A.c. in the amount of 1 ampere with a frequency of 10 kHz is used. Finally, a procedure for applying the present result to an in situ measurement of K1, is proposed and verified.

AB - An a.c. potential drop technique is applied for measurement of the stress-intensity factor, K1. When a conductive material with a surface crack is loaded under a flow of a.c, a change occurs in electrical potential difference between two points located on either side of the surface separated by the crack. By measuring the change for different loadings, it is found that the change shows a linear relationship with the change in K1. Also, the relationship is revealed to be independent of the crack depth. A.c. in the amount of 1 ampere with a frequency of 10 kHz is used. Finally, a procedure for applying the present result to an in situ measurement of K1, is proposed and verified.

KW - A.C. Potential-Drop Technique

KW - Fracture

KW - In situ Measurement

KW - Linear Relationship

KW - Stress-Intensity Factor

KW - Surface Crack

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JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A

JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A

SN - 0387-5008

IS - 528

ER -

Application of A.C. Potential Drop Technique to Measure the Stress-Intensity Factor

Abstract

Keywords

ASJC Scopus subject areas

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