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 |
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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 | |
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