19 May 2005 Finite element design study of a bladed, flat rotating disk to simulate cracking in a typical turbine disk
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Abstract
Developing health management and ultrasafe engine technologies are the primary goals of NASA's Aviation Safety Program. Besides improving safety, health monitoring can also reduce maintenance costs. A unique disk spin simulation system was assembled by the Nondestructive Evaluation (NDE) Group at NASA Glenn Research Center to verify and study a crack detection technique based upon observing center of mass changes of the rotor system using various sensing technologies. This paper describes the finite element analysis results of low cost, a 25.4 cm (10 in.) diameter, flat turbine disk used to evaluate the detection techniques by simulating typical cracks observed in turbine engine disks. Changes in radial tip displacement and center of mass are presented as a function of speed, crack size and location.
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Ali Abdul-Aziz, Ali Abdul-Aziz, Jeffrey J. Trudell, Jeffrey J. Trudell, George Y. Baaklini, George Y. Baaklini, } "Finite element design study of a bladed, flat rotating disk to simulate cracking in a typical turbine disk", Proc. SPIE 5767, Nondestructive Evaluation and Health Monitoring of Aerospace Materials, Composites, and Civil Infrastructure IV, (19 May 2005); doi: 10.1117/12.601896; https://doi.org/10.1117/12.601896
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