Photoelastic investigation of turbine rotor blade shrouds

被引：0
|
作者：
Chandrasekhar, U. [1 ]
Gururaj, D. [1 ]
Ramachandra, K. [1 ]
Padmanabhan, R. [1 ]
机构：
[1] Gas Turbine Research Establishment, India
来源：
Defence Science Journal | 1988年 / 38卷 / 04期
关键词：
Fatigue of Materials - Metals and Alloys--Creep - Photoelasticity - Stresses--Analysis - Turbomachinery--Rotors;
D O I：
10.14429/dsj.38.5873
中图分类号：
学科分类号：
摘要：
This paper deals with the photoelastic stress analysis carried out to investigate the premature failure of low pressure turbine rotor blade shrouds of an experimental gas turbine. Stress distribution at the shroud aerofoil interface was studied for the original rectangular shroud geometry by stress freezing the photoelastic model blades under rotating conditions. The combined influence of taper shroud geometry and larger fillet radius in mitigating the shroud stress is studied by the three dimensional photoelastic technique and an optimised shroud geometry subject to the stress requirements of blade material is suggested.
引用
收藏
页码：431 / 438
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