TOMOGRAPHY OF STRESS TENSOR FIELD BY ACOUSTIC ELASTICITY
作者:
I. Romanishin,
期刊:
Nondestructive Testing and Evaluation
(Taylor Available online 1998)
卷期:
Volume 15,
issue 6
页码: 361-371
ISSN:1058-9759
年代: 1998
DOI:10.1080/10589750008952879
出版商: Taylor & Francis Group
关键词: Ultrasonic tomography;Stress tensor;Acoustic elasticity;Ultrasound velocity;Algebraical reconstruction algorithm
数据来源: Taylor
摘要:
The algebraical tomographic reconstruction algorithm of the stress tensor field for the inhomogeneous stress-strain state is presented. This problem is more complicated than traditional scalar fields tomography and it has not been solved yet.The phenomenological linear dependences between relative variation of velocity of ultrasonic shear-waves and stress tensor components in the case of small effects of acoustic elasticity have been chosen as initial correlations. Finally, the determination of spatial distribution of the stress tensor field for inhomogeneous stress-strain state is reduced to a solution of linear algebraical equations for the stress tensor components in each cell. The important advantage of the presented algorithm is its simplicity of its application.
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