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Acoustical tests

ISO 1680-1, Acoustics - Test code for the measurement of airborne noise emitted by rotating electrical machinery... [Pg.259]

H. Kast (104-07) Determination of Sensitivity to Friction (Medicion de la sensibili-dad al rozamiento) (107) Determination of Sensitivity to Initiation by Detonation (110-12) Determination of Sensitivity to Initiation by Influence (112-13) Determination of Power of Explosives using Trauzl Test (113-17), Small Lead Block Test (117), Quinan Apparatus (118), Guttmann Apparatus (118-19), Ballistic Pendulum (119-20), Mortar (Mortero probeta) (120-21) Determination of Efficiency of Initiating Devices by Lead Plate Test (121-23), Nail Test (123), Sand Test (124) and Acoustic Tests (124) Determination of Characteristics of Flames Produced on Explosion (125-29)... [Pg.312]

Srisawas, W. and Jindal, V.K. Acoustic testing of snack food crispness using neural networks, /. Texture Stud., 34, 401, 2003. [Pg.132]

ACOUSTIC TEST FLIGHT RESULTS WITH PREDICTION FOR MILITARY AIRCRAFT DURING FCLP MISSION... [Pg.245]

After selection of the mission profile for the acoustic test was determined, NAS Patuxent River s Propulsion Department utilized their flight simulator and cycle deck for the engine to determine both aircraft and engine parameters needed to compute ground-based acoustic signatures. Table 4.2 lists all parameters needed to exercise the NASA LaRC systems noise prediction code ANOPP. In Table 4.2,... [Pg.249]

Seiner, J. M., L. S. Ukeiley, and B. J. Jansen. 2002. Acoustic test flight results with prediction for the F/A-18 E/F aircraft during FCLP mission. In Energy conversion propulsion New horizons. Ed. G. D. Roy. Washington, D.C. Office of Naval Research. 245-58. [Pg.269]

FIGURE 5-30 Acoustic test section used to measure solid/gas flow noise. [Pg.195]

The stimulated acoustic test is a basic test based on the difference in oscillatory behavior of the composite layer with or without adherence to the layer underneath. [Pg.133]

Anechoic (echo-reducing) coatings to reduce tank-wall reflections are needed in many underwater acoustic test facihties. One effective design utiHzes butyl... [Pg.73]

During acoustic testing at a major transit authority s elevated structure it came out that the softer the compression and shear stiffnesses of the direct-fixation elastomeric rail fastener, the better the acoustic performance. Figure 5-73 shows the noise-level reduction available from using soft elastomeric rail fasteners instead of stiff ones. The soft fastener has approximately 50 percent of the stiff fastener s spring rate. This figure shows the average wayside noise levels at 30 m (100 ft.) from an elevated structure for train operation on soft fasteners compared to stiff ones. [Pg.380]

Although more sophisticated acoustical test equipment is capable of deriving d(B) directly, it is far more common for test equipment to have merely A and C weighting. A and C weighting both reduce the contribution that low frequencies... [Pg.328]

Acoustic testing and evaluation of textiles for buildings and office environments... [Pg.103]


See other pages where Acoustical tests is mentioned: [Pg.77]    [Pg.23]    [Pg.137]    [Pg.537]    [Pg.167]    [Pg.133]    [Pg.27]    [Pg.490]    [Pg.8]   
See also in sourсe #XX -- [ Pg.350 ]




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