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Mechanika

Mechanika
88 (1/16), DOI: 10.7862/rm.2016.1

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

Arkadiusz BEDNARZ, Michał KUŹNIAR, Evgeniy BOLTYNJUK

DOI: 10.7862/rm.2016.1

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.

Full text (pdf)

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About this Article

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

AUTHORS:
Arkadiusz BEDNARZ (1)
Michał KUŹNIAR (2)
Evgeniy BOLTYNJUK (3)

AUTHORS AFFILIATIONS:
(1) Rzeszow University of Technology
(2) Rzeszow University of Technology
(3) Saint Petersburg State University

JOURNAL:
Mechanika
88 (1/16)

KEY WORDS AND PHRASES:
crack propagation, notch, thermovision, turbine engine, adhesive friction, fatigue life, resonant vibrations

FULL TEXT:
http://doi.prz.edu.pl/pl/pdf/mechanika/165

DOI:
10.7862/rm.2016.1

URL:
http://dx.doi.org/10.7862/rm.2016.1

RECEIVED:
2016-01-19

ACCEPTED:
2016-03-21

COPYRIGHT:
Publishing House of Rzeszow University of Technology Powstańców Warszawy 12, 35-959 Rzeszow

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