Failure Analysis of HP Turbine Blades in a Low Bypass Turbofan Engine

被引：11

作者：

Mishra, R. K. ^{[1
]}

Johney, Thomas ^{[2
]}

Srinivasan, K. ^{[2
]}

Vaishakhi, Nandi ^{[3
]}

Raghavendra, Bhat ^{[3
]}

机构：

[1] CEMILAC, Reg Ctr Mil Airworthiness Engn, Bangalore, Karnataka, India

[2] Hindustan Aeronaut Ltd, Engine Div, Bangalore, Karnataka, India

[3] Hindustan Aeronaut Ltd, Foundry & Forge Div, Bangalore, Karnataka, India

来源：

JOURNAL OF FAILURE ANALYSIS AND PREVENTION | 2013年 / 13卷 / 03期

关键词：

Blade; Fatigue failure; Fractography; Gas turbine;

D O I：

10.1007/s11668-013-9674-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Failure of high pressure (HP) turbine blades in a low bypass turbofan engine is analyzed to determine its root cause. Forensic and metallurgical investigations are carried out on all the failed blades as well as the failed components of the downstream modules. Fatigue failure of one HP turbine blade at dovetail region is found to be the primary failure. This failure has caused extensive damages in high-and low-pressure turbine modules. Remedial measures are also suggested to prevent such failures.

引用

页码：274 / 281

页数：8

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