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Titolo:
Failure investigation of blade and disk in first stage compressor
Autore:
Xi, NS; Zhong, PD; Huang, HQ; Yan, H; Tao, CH;
Indirizzi:
Inst Aeronaut Mat, Failure Anal Ctr AVIC, Beijing 100095, Peoples R China Inst Aeronaut Mat Beijing Peoples R China 100095 100095, Peoples R China Guizhou Aeroengine Inst, Guizhou, Peoples R China Guizhou Aeroengine InstGuizhou Peoples R China uizhou, Peoples R China
Titolo Testata:
ENGINEERING FAILURE ANALYSIS
fascicolo: 6, volume: 7, anno: 2000,
pagine: 385 - 392
SICI:
1350-6307(200012)7:6<385:FIOBAD>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Keywords:
fatigue; gas-turbine failures; turbine blade failures; turbine disk failures; engine failures;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
4
Recensione:
Indirizzi per estratti:
Indirizzo: Xi, NS Inst Aeronaut Mat, Failure Anal Ctr AVIC, POB 81-4, Beijing 100095,Peoples R China Inst Aeronaut Mat POB 81-4 Beijing Peoples R China 100095 R China
Citazione:
N.S. Xi et al., "Failure investigation of blade and disk in first stage compressor", ENG FAIL AN, 7(6), 2000, pp. 385-392

Abstract

A matched blade tenon and disk mortise of the first stage compressor in anaeroengine fractured simultaneously, Apparently, both had fatigue featureson the fracture surfaces. Macro observations showed the cracking sites were roughly at the central region of the matched tenon and mortise. Contact surfaces examination revealed there were important marks, showing abnormal contact of the tenon and mortise in service. Material qualities were inspected and the stresses in the tenon and in the mortise were calculated under normal conditions. These demonstrate that the failures were not due to the insufficiency of failure resistance but the deviation from expected conditions. Conclusively, the bad contact of the tenon and the mortise is responsible for the failures. Field non-destructive inspection was performed on other aeroengines of the same type, and some cracks, which were very similar tothose in the fractured tenon and mortise, were found. Further investigation revealed that the design shortcoming resulted in over-compensation of centrifugal bend moment and bad contact condition. (C) 2000 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 07:30:46