Abstract
It is necessary for determination of crack size and shape by means of D.C. potential drop technique to know electric potential distribution at the surface of cracked body beforehand. The potential distribution on a body with semi-elliptical surface-crack is investigated in this paper. The results obtained are summarized as follows. (i) Exact distribution is derived as Eqs. (1) approximately (3) for semi-infinite body with a semi-elliptical surface-crack. As it requires numerical integral to evaluate the potential, a simple approximation method (Eqs. (14) and (15) is proposed for convenience. It is confirmed by numerical analysis that the error of approximation is very small. (ii) We propose an easy method to make a cracked body with an arbitrary crack shape and size for the calibration of electric potential distribution. Plate specimens with a semi-elliptical surface-crack are made of a wood metal, and the potential distribution is examined experimentally.
| Original language | English |
|---|---|
| Pages (from-to) | 259-264 |
| Number of pages | 6 |
| Journal | Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A |
| Volume | 56 |
| Issue number | 522 |
| Publication status | Published - Feb 1990 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Mechanical Engineering
Cite this
Electric field analysis for determination of shape and size of semi-elliptical surface-crack by means of D.C. potential drop technique. / Tada, Naoya; Sakanoue, Yoshinori; Kitamura, Takayuki; Ohtani, Ryuichi.
In: Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, Vol. 56, No. 522, 02.1990, p. 259-264.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electric field analysis for determination of shape and size of semi-elliptical surface-crack by means of D.C. potential drop technique
AU - Tada, Naoya
AU - Sakanoue, Yoshinori
AU - Kitamura, Takayuki
AU - Ohtani, Ryuichi
PY - 1990/2
Y1 - 1990/2
N2 - It is necessary for determination of crack size and shape by means of D.C. potential drop technique to know electric potential distribution at the surface of cracked body beforehand. The potential distribution on a body with semi-elliptical surface-crack is investigated in this paper. The results obtained are summarized as follows. (i) Exact distribution is derived as Eqs. (1) approximately (3) for semi-infinite body with a semi-elliptical surface-crack. As it requires numerical integral to evaluate the potential, a simple approximation method (Eqs. (14) and (15) is proposed for convenience. It is confirmed by numerical analysis that the error of approximation is very small. (ii) We propose an easy method to make a cracked body with an arbitrary crack shape and size for the calibration of electric potential distribution. Plate specimens with a semi-elliptical surface-crack are made of a wood metal, and the potential distribution is examined experimentally.
AB - It is necessary for determination of crack size and shape by means of D.C. potential drop technique to know electric potential distribution at the surface of cracked body beforehand. The potential distribution on a body with semi-elliptical surface-crack is investigated in this paper. The results obtained are summarized as follows. (i) Exact distribution is derived as Eqs. (1) approximately (3) for semi-infinite body with a semi-elliptical surface-crack. As it requires numerical integral to evaluate the potential, a simple approximation method (Eqs. (14) and (15) is proposed for convenience. It is confirmed by numerical analysis that the error of approximation is very small. (ii) We propose an easy method to make a cracked body with an arbitrary crack shape and size for the calibration of electric potential distribution. Plate specimens with a semi-elliptical surface-crack are made of a wood metal, and the potential distribution is examined experimentally.
UR - http://www.scopus.com/inward/record.url?scp=0025384185&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0025384185&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0025384185
VL - 56
SP - 259
EP - 264
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 - 522
ER -