DEVELOPMENT OF A SUITABLE ANECHOIC TREATMENT FOR THE ASD SONIC FATIGUE FACILITY

1963 ◽  
Author(s):  
Franklin G. Tyzzer
Keyword(s):  
Sonic Fatigue

scholarly journals Sonic Fatigue of a Simple Notched Panel

1960 ◽  
Vol 32 (11) ◽  
pp. 1512-1512
Author(s):  
I. Dyer ◽  
P. W. Smith ◽  
C. M. Gogos ◽  
C. I. Malme
Keyword(s):  
Sonic Fatigue

scholarly journals Inclusion Inspection Method in Ultra-sonic Fatigue Test

2002 ◽  
Vol 88 (10) ◽  
pp. 643-650 ◽  
Author(s):  
Yoshiyuki FURUYA ◽  
Saburo MATSUOKA ◽  
Takayuki ABE
Keyword(s):  
Fatigue Test ◽  
Inspection Method ◽  
Sonic Fatigue

Nonlinear modal models for sonic fatigue response prediction: a comparison of methods

2005 ◽  
Vol 284 (3-5) ◽  
pp. 1145-1163 ◽  
Author(s):  
Joseph J. Hollkamp ◽  
Robert W. Gordon ◽  
S. Michael Spottswood
Keyword(s):  
Response Prediction ◽  
Comparison Of Methods ◽  
Sonic Fatigue

Ultra High Bypass Aircraft Sonic Fatigue

1989 ◽  
Vol 32 (4) ◽  
pp. 26-34
Author(s):  
Daniel Lorch
Keyword(s):  
Structural Design ◽  
High Intensity ◽  
Fatigue Cracks ◽  
Wave Tube ◽  
Transport Aircraft ◽  
Sonic Fatigue ◽  
Propeller Blades ◽  
The 1960S ◽  
Treatment Designs ◽  
Treatment Design

The development of the Ultra High Bypass (UHB) engine for transport aircraft introduces sonic fatigue as a major structural design challenge. UHB engines generate high intensity acoustic tones associated with the harmonics of the propeller blades. Current analysis methods and structural design approaches to prevent sonic fatigue cracks are based on techniques developed in the 1960s for broadband random jet-noise excitation. The high intensity noise testing and analysis completed to develop a sonic fatigue treatment design for the UHB Demonstrator aircraft are discussed. The evaluation included progressive wave tube (PWT) and shaker table testing conducted on representative aircraft components in the laboratory. Also discussed are the sonic fatigue treatment designs developed and flight tested on the UHB Demonstrator aircraft by Douglas Aircraft Company. The tests proved that lightweight and inexpensive treatments can be developed that will provide protection against sonic fatigue.

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