MONITORING CRACK PROPAGATION IN TURBINE BLADES CAUSED BY THERMOSONICS

被引：3

作者：

Bolu, G. ^{[1
]}

Gachagan, A. ^{[1
]}

Pierce, G. ^{[1
]}

Harvey, G. ^{[2
]}

Choong, L. ^{[3
]}

机构：

[1] Univ Strathclyde, Ctr Ultrason Engn, Dept Elect & Elect Engn, Glasgow G1 1XW, Lanark, Scotland

[2] Rolls Royce plc, East Kilbride, Scotland

[3] Vibrant NDT Ltd, Sheffield S3 7AR, S Yorkshire, England

来源：

REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 29A AND 29B | 2010年 / 1211卷

基金：

英国工程与自然科学研究理事会;

关键词：

Thermosonic; PCRT; Turbine Blades; Crack Propagation;

D O I：

10.1063/1.3362267

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

High-power acoustic excitation of components during a thermosonic (or Sonic IR) inspection may degrade the structural integrity of the component by propagating existing cracks. Process Compensated Resonance Testing (PCRT) technology can be used to detect changes in material properties by comparing a components resonant spectra to a reference spectra at regular intervals after systematic exposure to high-power excitation associated with thermosonic inspection. The objective of this work is to determine whether a typical thermosonic inspection degrades the structural integrity of a turbine blade. In this work, the resonant spectra of six cracked and six uncrackcd turbine blades are captured before and after a series of thermosonic inspections. Next, these spectra are analyzed using proprietary software for changes in resonant behavior. Results from this work indicate no change in blade resonant behavior for a typical thermosonic inspection.

引用

页码：1654 / +

页数：2

共 8 条

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[7] Rolls-Royce, 2005, JET ENGINE
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