Dynamic analysis of the turbine blade in a clamp for the identification of the frequency responses and mode shapes at ultrasonic frequency range
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One of the important advantages of Thermosonics is that it can be applied to complex structures such as a turbine blade as a convenient and quick screening test method. For a reliable thermosonic test, the vibrational characteristics of the system comprising the tested structure and the clamp at ultrasonic frequency range should be identified. Therefore, this study presented the analysis results offrequency response functions and mode shapes of the turbine blade and clamp system and investigate the possibility of the reliable excitation system for the thermosonic test.
Abstract
One of the important advantages of Thermosonics is that it can be applied to complex structures such as a turbine blade as a convenient and quick screening test method. For a reliable thermosonic test, the vibrational characteristics of the system comprising the tested structure and the clamp at ultrasonic frequency range should be identified. Therefore, this study presented the analysis results offrequency response functions and mode shapes of the turbine blade and clamp system and investigate the possibility of the reliable excitation system for the thermosonic test.
참고문헌 (9)
- X. Y. Han, "Acoustic chaos for enhanced detectability of cracks by sonic infrared imaging", Journal of Applied Physics, 95(7), pp.3792~3797 (2004)
- 강부병, "Excitation Characteristics of a PZT Exciter for Thermosonic Non-destructive Testing of Steel Plates", 한국기계기술학회지, 15(5), pp.645~652 (2013), 한국기계기술학회
- 박영훈, "IR 이미지와 PDE 해석에 의한 결함깊이 하이브리드 연구", 한국기계기술학회지, 17(4), pp.665~674 (2015), 한국기계기술학회
- B. Kang, "Multi mode excitation system for thermosonic testing of turbine blades", Review of Progress in Quantitative Nondestructive Evaluation of AIP Conference Proceedings, 975, pp.520~527 (2008)
- P. Cawley, "A quick method for the measurement of structural damping", Mechanical Systems and Signal Processing, pp.39~47 (1988), 2
- A. H. Nayfeh, "Wave propagation in layered anisotropic media" (1995), ELSEVIER
- G. E. Dieter, "Mechanical Metallurgy" (1986), McGRAW-HILL
- R. Dennis, "Mechanistic modelling of deformation and void growth behavior in superalloy single crystals", Ph.D., mechanical Engineering, pp.2000
- D. Lempidaki, "Application of non-contact strain measurement techniques to a single crystal alloy at elevated temperatures", International Conference on Fracture, pp.20~25 (2005)