Integrated quality control of the rotor discs of gas turbines of gas-compressor units by eddy-current and dye penetrant nondestructive testing

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• 作者：I. I. Kryukov ; N. G. Shmelev ; A. I. Levchenko…
• 刊名：Russian Journal of Nondestructive Testing
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：52
• 期：2
• 页码：102-111
• 全文大小：1,951 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Characterization and Evaluation Materials
  Structural Materials
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-3385
• 卷排序：52

文摘

The features of the integrated diagnostics of the discs of gas turbines of gas-compressor units using eddy-current and dye-penetrant testing are considered. The effectiveness of the detection of the crack-type defects in HPT and LPT discs under the first tooth of the fir-tree slots of the discs along the contact line of the teeth of the comb and blade butt are demonstrated. The calculations of the stress–strain state allowed the estimation of the occurrence of cracks in the fir-tree slots of discs, as well as the service life of discs up to crack formation at extraordinary operating temperatures. Integrated quality control by eddy-current and color capillary nondestructive testing provides reliable crack detection in details without serious costs for mechanical preparation of items for inspection along with a substantial reduction of the labor-intensiveness and depth of the inspection.Keywordsgas turbinecracks in discsevaluation of the crack formationintegrated diagnosticseddycurrent nondestructive testingcolor flaw detection