PREDICTING ULTRASONIC GRAIN NOISE IN POLYCRYSTALS - A MONTE-CARLO MODEL

Authors
YALDA I MARGETAN FJ THOMPSON RB
Citation
I. Yalda et al., PREDICTING ULTRASONIC GRAIN NOISE IN POLYCRYSTALS - A MONTE-CARLO MODEL, The Journal of the Acoustical Society of America, 99(6), 1996, pp. 3445-3455
Citations number
35
Categorie Soggetti
Acoustics
Journal title
The Journal of the Acoustical Society of America → ACNP
ISSN journal
00014966
Volume
99
Issue
6
Year of publication
1996
Pages
3445 - 3455
Database
ISI
SICI code
0001-4966(1996)99:6<3445:PUGNIP>2.0.ZU;2-T
Abstract
A Monte Carlo technique is described for predicting the ultrasonic noi se backscattered from the microstructure of polycrystalline materials in a pulse/echo immersion inspection. Explicit results are presented f or equiaxed, randomly oriented aggregates of either cubic or hexagonal crystallites. The model is then tested using measured noise signals. Average and peak noise levels and the distribution of the noise voltag es are studied as the density of grains changes. (C) 1996 Acoustical S ociety of America.