방사선투과사진에 의한 결함깊이 및 높이의 평가

강계명; 박은수; 심언덕; Kae Myung Kang; Un Su Park; Eon Deok Sim

Korean Journal of Materials Research, Vol.12, No.8, 682-687, August, 2002

DOI10.3740/MRSK.2002.12.8.682 Export Citation

방사선투과사진에 의한 결함깊이 및 높이의 평가

Estimation of Flaw Depth and Height by Radiography

강계명 ^†, 박은수 , 심언덕¹

서울산업대학교 신소재공학과
¹동양검사기술(주)

Kae Myung Kang^†, Un Su Park , and Eon Deok Sim¹

Department of Materials Science and Engineering, Seoul National University of Technology, Seoul, 139-743, Korea
¹Dong Yang Inspection Technology Co. LTD, Seoul, 135-260, Korea

E-mail:

The three-dimensional estimation on the depth and height of flaw by using the difference of radiographic contrast density was studied. First, the specimens having artificial flaws of various depths and heights were prepared and the radiographic testing was performed. The radiographic depth of flaw was investigated and estimated on the effect of the scattered radiation with the change of distance between flaw and film. The height of flaw was estimated from the radiographic test with the reference specimen. The radiographic contrast with flaw depth decreased with increasing the flaw depth. The scattered radiation increased with increasing flaw depth and varied with the location between flaw and film. However, in the case of flaw height, the contrast density increased with increasing flaw height. It is thought due to the change in volume generating the scattered radiation which reaches a film.

Keywords:radiography;contrast density;flaw depth;flaw height;scattered radiation

[References]

Metal handbook, 9th ed., Nondestructive Evaluation and Quality Control. ASTM International, 17, 310 (1996) (1996)
Bryant LE, Nondestructive Testing Handbook, ASNT, 3, 317 (1985) (1985)
Radiograpy in Modern Industry, 4th ed., Eastman Kodak Company, 114 (1980) (1980)
中村和夫, 平山一男, 橋本健二, 中村正宏, 加藤光昭, 日本非破壞檢査協會, 48(7), 421 (1999) (1999)
中村和夫, 平山一男, 橋本健二, 中村正宏, 加藤光昭, 日本非破壞檢査協會, 48(7), 430 (1999) (1999)
中村和夫, 平山一男, 橋本健二, 中村正宏, 加藤光昭, 日本非破壞檢査協會, 48(7), 437 (1999) (1999)
仙田富男, 平山一男, 山中久志, 橫山計次, 中村知夫, 日本非破壞檢査協會, 36(6), 411 (1987) (1987)
Knoll GF, Radiation Detection and Measurement, Hemisphere, 50 (1989) (1989)
仙田富男, 平山一男, 小野桂一郞, 高橋次郞, (社)日本非破壞檢査協會關西支部硏究發表會, 65 (1979) (1979)
Cullity BD, Elements of X-ray Diffraction, 2nd ed., Addison Wesley, 13 (1977) (1977)
Tsoulfanidis N, Measurement and Detection of Radiation, John Wiley & Sons, 141 (1976) (1976)

[Related Articles]

[1] Metal handbook, 9th ed., Nondestructive Evaluation and Quality Control. ASTM International, 17, 310 (1996) (1996)

[2] Bryant LE, Nondestructive Testing Handbook, ASNT, 3, 317 (1985) (1985)

[3] Radiograpy in Modern Industry, 4th ed., Eastman Kodak Company, 114 (1980) (1980)

[4] 中村和夫, 平山一男, 橋本健二, 中村正宏, 加藤光昭, 日本非破壞檢査協會, 48(7), 421 (1999) (1999)

[5] 中村和夫, 平山一男, 橋本健二, 中村正宏, 加藤光昭, 日本非破壞檢査協會, 48(7), 430 (1999) (1999)

[6] 中村和夫, 平山一男, 橋本健二, 中村正宏, 加藤光昭, 日本非破壞檢査協會, 48(7), 437 (1999) (1999)

[7] 仙田富男, 平山一男, 山中久志, 橫山計次, 中村知夫, 日本非破壞檢査協會, 36(6), 411 (1987) (1987)

[8] Knoll GF, Radiation Detection and Measurement, Hemisphere, 50 (1989) (1989)

[9] 仙田富男, 平山一男, 小野桂一郞, 高橋次郞, (社)日本非破壞檢査協會關西支部硏究發表會, 65 (1979) (1979)

[10] Cullity BD, Elements of X-ray Diffraction, 2nd ed., Addison Wesley, 13 (1977) (1977)

[11] Tsoulfanidis N, Measurement and Detection of Radiation, John Wiley & Sons, 141 (1976) (1976)