TY - JOUR
T1 - DIFFUSE WAVES IN FINITE PLATES.
AU - Weaver, Richard L.
N1 - Funding Information:
This work was sponsored by the National Science Foundation grant number MEA 81-22124.
PY - 1984
Y1 - 1984
N2 - The Diffuse Field Assumption of room acoustics is shown to lead to a relationship between the total spectral energy density of a linear elastic wave disturbance in a finite plate and the power density as observed on the surface. For times long compared to acoustic transit times across the length of the plate, the Diffuse Field Assumption allows the theorist to neglect the details of edge reflections under the assumption that an eventual steady state energy balance is maintained amongst the different branches of wave propagation. Application of these ideas to acoustic emission source characterization is discussed.
AB - The Diffuse Field Assumption of room acoustics is shown to lead to a relationship between the total spectral energy density of a linear elastic wave disturbance in a finite plate and the power density as observed on the surface. For times long compared to acoustic transit times across the length of the plate, the Diffuse Field Assumption allows the theorist to neglect the details of edge reflections under the assumption that an eventual steady state energy balance is maintained amongst the different branches of wave propagation. Application of these ideas to acoustic emission source characterization is discussed.
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M3 - Article
AN - SCOPUS:85040501344
SN - 0073-5264
JO - T.&A.M. Report (University of Illinois at Urbana - Champaign, Department of Theoretical and Applie
JF - T.&A.M. Report (University of Illinois at Urbana - Champaign, Department of Theoretical and Applie
IS - 465
ER -