TY - JOUR
T1 - Study of crack inversions utilizing dipole model of a crack and hall element measurements
AU - Minkov, Dorian
AU - Lee, Jinyi
AU - Shoji, Tetsuo
N1 - Funding Information:
This work was supported by Grant-in-Aid for Centre of Excellence Research No. 11CE2003 of the Japanese Ministry of Education, Science, Sports, and Culture. The authors would like to also thank Dr. Y. Sato for his technical assistance.
PY - 2000/7
Y1 - 2000/7
N2 - A method is proposed for computing the depth and width of simple surface cracks based on dipole model of a crack. Surface cracks with different widths cut mechanically in SS400 steel specimens are investigated. Hall voltage distribution are measured by a Hall element sliding on the specimen's surface along a line parallel to the direction of the applied magnetic field, perpendicular to the long axis of the crack, and halving its length. The performed crack inversions show that the depth of the crack can be determined with 2% error, provided, that the crack length and width are measured independently. When the crack width is unknown, the depth error is within 12%, but the width error can be as large as 30%.
AB - A method is proposed for computing the depth and width of simple surface cracks based on dipole model of a crack. Surface cracks with different widths cut mechanically in SS400 steel specimens are investigated. Hall voltage distribution are measured by a Hall element sliding on the specimen's surface along a line parallel to the direction of the applied magnetic field, perpendicular to the long axis of the crack, and halving its length. The performed crack inversions show that the depth of the crack can be determined with 2% error, provided, that the crack length and width are measured independently. When the crack width is unknown, the depth error is within 12%, but the width error can be as large as 30%.
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U2 - 10.1016/S0304-8853(00)00333-4
DO - 10.1016/S0304-8853(00)00333-4
M3 - Article
AN - SCOPUS:0033706040
VL - 217
SP - 207
EP - 215
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 1
ER -