Temperature distribution as a method of measuring crack length in fatigue tests of compressor blade
Vol 33 No 293 (1) (2016), Articles
Vol 33 No 293 (1) (2016)

Temperature distribution as a method of measuring crack length in fatigue tests of compressor blade

Articles
https://doi.org/10.7862/rm.2016.1
Published April 28, 2016
Arkadiusz Bednarz
Rzeszow University of Technology, 8 Powstancow Warszawy Av., 35-959 Rzeszow, Poland
https://orcid.org/0000-0002-3611-7513
Michał Kuźniar
Rzeszow University of Technology, Poland
https://orcid.org/0000-0001-8401-8846
Evgeniy Boltynjuk
Saint Petersburg State University, Russia
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Keywords

crack propagation
notch
thermovision
turbine engine
adhesive friction
fatigue life
resonant vibrations

How to Cite

Bednarz, A., Kuźniar, M., & Boltynjuk, E. (2016). Temperature distribution as a method of measuring crack length in fatigue tests of compressor blade. Advances in Mechanical and Materials Engineering, 33(293 (1), 5-16. https://doi.org/10.7862/rm.2016.1
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Abstract

In this paper the experimental results of fatigue analysis of the compressor blade were presented. Temperature distribution as a method of measuring crack length was considered. The blade with the V-notch (which simulates the foreign object damage) was entered into transverse vibration under resonance condition. During investigations both the amplitude of the blade tip displacement and also the crack length were monitored. At the same the pictures of time temperature distribution were taken. In the first part of the work the amplitude-frequency diagrams were obtained for different sizes of cracks. In the investigation, both a number of load cycles to crack initiation and dynamics of the crack growth in the compressor blade subjected to vibrations were determined. An additional original result of the work is the comparison of optically measured crack length and the dimension of the crack length taken from the picture. An important application will be the benefits of the method of measuring the length of the slot with a temperature distribution image. The results presented in this paper have theoretical and practical significance.

https://doi.org/10.7862/rm.2016.1
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