TY - GEN
T1 - Development of crack depth indicator for deep surface crack
AU - Hayakawa, Manabu
AU - Takeo, Fumio
AU - Mamada, Seiichi
AU - Saka, Masumi
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2005
Y1 - 2005
N2 - Crack depth indicator using a direct current potential drop technique has been generally applied to the nondestructive inspection in the thermal power plants such as steam pipe and turbine casing. In this paper, the authors presented practical studies concerning the development of the advanced crack depth indicator for the deep surface crack. The authors have conducted experimental measurements using the customary crack depth indicator inspecting the fatigue pre-cracked plate specimens of some materials. The results showed that the crack depth indicator was effective to inspect the surface shallow crack, however, it was hardly applied to the deep crack. And the sensor of this equipment was found to be difficult to apply some practical conditions such as contact surfaces and mechanical designs of inspected structures. To get over the restrictions, the authors have developed a new type of crack depth indicator and sensor. The authors have conducted additional experimental measurements applying this equipment using some pre-cracked specimens such as plates and structural components of some materials.
AB - Crack depth indicator using a direct current potential drop technique has been generally applied to the nondestructive inspection in the thermal power plants such as steam pipe and turbine casing. In this paper, the authors presented practical studies concerning the development of the advanced crack depth indicator for the deep surface crack. The authors have conducted experimental measurements using the customary crack depth indicator inspecting the fatigue pre-cracked plate specimens of some materials. The results showed that the crack depth indicator was effective to inspect the surface shallow crack, however, it was hardly applied to the deep crack. And the sensor of this equipment was found to be difficult to apply some practical conditions such as contact surfaces and mechanical designs of inspected structures. To get over the restrictions, the authors have developed a new type of crack depth indicator and sensor. The authors have conducted additional experimental measurements applying this equipment using some pre-cracked specimens such as plates and structural components of some materials.
KW - Nondestructive Inspection
KW - Potential Drop Technique
KW - Surface Crack
KW - Thermal Power Plants
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U2 - 10.1115/IMECE2005-79867
DO - 10.1115/IMECE2005-79867
M3 - Conference contribution
AN - SCOPUS:33645693868
SN - 0791842266
SN - 9780791842263
T3 - American Society of Mechanical Engineers, Nondestructive Evaluation Engineering Division (Publication) NDE
SP - 19
EP - 23
BT - Proceedings of the ASME Nondestructive Evaluation Engineering Division 2005
T2 - 2005 ASME International Mechanical Engineering Congress and Exposition, IMECE 2005
Y2 - 5 November 2005 through 11 November 2005
ER -