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Fatigue Tests and Crack Detection on Some Types of Axial-Flow Compressor Rotor Blades

Report Number: AEDC TDR 62-168
Author: Thomas, R. E.
Corporate Author: ARO, Inc.
Laboratory: Arnold Engineering Development Center
Date of Publication: 1962-10
Pages: 34
Contract: AF 40(600)-1000
Project: None Given
AD Number: AD0287410

Fatigue data were obtained from several types of compressor rotor blades that are in use in axial-flow compressors at the von Karman Gas Dynaics Facility. The data provided a general comparison of ''as manufactured'' endurance limits and were used as a veification control in evaluating a supplemenary method of detecting failed blades during sytematic maintenance inspections. By the presentation of stress versus cycles to failure curves, a comparison is ade between AISI number-8630 cast steel blades as originally furnished with the compressors, AISI number-8630 cast steel shot-peened blades, and AISI number-403 forged, heat-treated and machined blades. A method is presented which may be used to supplement the magnetic particle method for detecting cracked rotor blades. (Autho)AD-287 4109N3 +++Fatigue tests and crack detection on some types of axial flow compressor rotor blades. Data provided a general comparison of ''as manufactured' endurance limits and were used as a verifiction control in evaluating a suppplementary method of detecting failed blades.

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