scholarly journals Obtaining internal and coupling loss factors by a transient test method

1989 ◽  
Vol 86 (S1) ◽  
pp. S64-S64 ◽  
Author(s):  
K. Sato ◽  
N. Lalor
Keyword(s):  
Test Method ◽  
Coupling Loss ◽  
Loss Factors

Measurement of SEA coupling loss factors using point mobilities

1994 ◽  
Vol 346 (1681) ◽  
pp. 465-475 ◽  
Keyword(s):  
Coupled Systems ◽  
Coupling Loss ◽  
Good For ◽  
Loss Factors

In this paper calculation of SEA coupling loss factors, using measured point mobility, is derived for coupled systems, homogeneous or not, with rigid or soft links. Some simplifications and hypothesis are necessary to fit with SEA basic relations. To validate the theory an experiment was done on plates coupled in three points; the agreement is reasonably good for homogeneous and non-homogeneous plates.

Estimation of coupling loss factors for rectangular plates with different materials and junctions

2019 ◽  
Vol 50 (9-11) ◽  
pp. 306-312
Author(s):  
Mandale Maruti Bhagwan ◽  
Bangarubabu Popuri
Keyword(s):  
Loss Factor ◽  
Energy Analysis ◽  
Acoustic Analysis ◽  
Composite Plates ◽  
Rectangular Plates ◽  
Coupling Loss ◽  
Tightening Torque ◽  
Essential Parameter ◽  
Coupling Loss Factor ◽  
Loss Factors

In statistical energy analysis, coupling loss factor is the essential parameter for vibro-acoustic analysis of complicated structures. The coupling loss factors have been estimated using energy-level difference method. The tightening torque applied at structural junction has been varied. Higher values of coupling loss factor have been observed for higher tightening torque on bolted junction. The coupling loss factors have been determined for various structural junctions of rectangular composite plates. The riveted and bolted junctions have been examined for composite plates in same plane and size. The coupling loss factors for bolted junction are relatively higher than that for riveted junction of composite plates. The values of coupling loss factors are found to increase with increasing tightening torque applied at structural junctions of composite plates. It is also noted that the experimental results of coupling loss factors for point junctions vary with changes in fiber orientations of composite plates. It is firmly believed that the various findings of the coupling loss factors in this article help for vibro-acoustic analysis of complicated structures.

Experimental evaluation of coupling loss factors of thin plates

2001 ◽  
Vol 110 (5) ◽  
pp. 2630-2630
Author(s):  
Ryszard Panuszka ◽  
Jerzy Wiciak ◽  
Marek Iwaniec
Keyword(s):  
Experimental Evaluation ◽  
Thin Plates ◽  
Coupling Loss ◽  
Loss Factors
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