A method of crack detection in the turbine blade using digital holographic microscopy (DHM)

Naoya Tada, Seiichi Hamada, Tetsuo Teramae, Shin Yoshino, Takehiko Suzuki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationASME 2011 Pressure Vessels and Piping Conference, PVP 2011
Pages211-216
Number of pages6
DOIs
Publication statusPublished - 2011
EventASME 2011 Pressure Vessels and Piping Conference, PVP 2011 - Baltimore, MD, United States
Duration: Jul 17 2011Jul 21 2011

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume5
ISSN (Print)0277-027X

Other

OtherASME 2011 Pressure Vessels and Piping Conference, PVP 2011
CountryUnited States
CityBaltimore, MD
Period7/17/117/21/11

ASJC Scopus subject areas

  • Mechanical Engineering

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    Tada, N., Hamada, S., Teramae, T., Yoshino, S., & Suzuki, T. (2011). A method of crack detection in the turbine blade using digital holographic microscopy (DHM). In ASME 2011 Pressure Vessels and Piping Conference, PVP 2011 (pp. 211-216). (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 5). https://doi.org/10.1115/PVP2011-57299