TY - GEN
T1 - A method of crack detection in the turbine blade using digital holographic microscopy (DHM)
AU - Tada, Naoya
AU - Hamada, Seiichi
AU - Teramae, Tetsuo
AU - Yoshino, Shin
AU - Suzuki, Takehiko
PY - 2011
Y1 - 2011
N2 - The authors proposed an NDE method of detecting the crack developed in the turbine blade by means of digital holographic microscopy (DHM). UT procedures sometimes have limitations in particular cases of in-service-inspections such as the detection and sizing of a creep crack developed in the air-cooled casting blade of the combined cycle gas turbine. The local displacement at the blade surface near the crack during a mechanical loading is different from that of a noncracked blade. This small different can be detected by DHM. The authors discussed whether this difference affected by the mechanical load between the cracked blade and the noncracked is detectable by means of DHM or not. In this paper, the authors verified the practical validity of the proposed NDE method using the finite element analyses.
AB - The authors proposed an NDE method of detecting the crack developed in the turbine blade by means of digital holographic microscopy (DHM). UT procedures sometimes have limitations in particular cases of in-service-inspections such as the detection and sizing of a creep crack developed in the air-cooled casting blade of the combined cycle gas turbine. The local displacement at the blade surface near the crack during a mechanical loading is different from that of a noncracked blade. This small different can be detected by DHM. The authors discussed whether this difference affected by the mechanical load between the cracked blade and the noncracked is detectable by means of DHM or not. In this paper, the authors verified the practical validity of the proposed NDE method using the finite element analyses.
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U2 - 10.1115/PVP2011-57299
DO - 10.1115/PVP2011-57299
M3 - Conference contribution
AN - SCOPUS:84881446120
SN - 9780791844557
T3 - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
SP - 211
EP - 216
BT - ASME 2011 Pressure Vessels and Piping Conference, PVP 2011
T2 - ASME 2011 Pressure Vessels and Piping Conference, PVP 2011
Y2 - 17 July 2011 through 21 July 2011
ER -