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RESEARCH PAPERS: Gas Turbines: Structures and Dynamics

A New Experimental Method to Study Combined Fatigue of Actual Turbine Disk Mortise Teeth at Elevated Temperatures

[+] Author and Article Information
Rongqiao Wang, Jingxu Nie

Jet Propulsion Department, Beijing University of Aeronautics and Astronautics, Beijing, People’s Republic of China

J. Eng. Gas Turbines Power 119(4), 969-972 (Oct 01, 1997) (4 pages) doi:10.1115/1.2817084 History: Received July 01, 1996; Online November 19, 2007

Abstract

This paper presents a new experimental system to study the L-HCCF of an actual turbine disk mortise teeth at elevated temperature, using an actual disk as experimental component. This system ingeniously achieves combined loading (simulating low cycle radial centrifugal force and high cycle crosswise vibration of blade), high-frequency induction local heating (550°C constant temperature), control of high cycle vibrating frequency and amplitude, and crack real-time detection. The experimental result is identical with the practical flight failure. This method can be easily popularized to study the L-HCCF of many components.

Copyright © 1997 by The American Society of Mechanical Engineers
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