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The propagation of ultrasound in an austenitic weld

Abstract：

:The propagation of ultrasound through an austenitic weld is investigated experimentally as well as in a numerical simulation. The weld is insonified at normal incidence to the fusion line with a longitudinal contact transducer. In order to experimentally trace the ultrasound through the weld, slices of different thicknesses from the original weld have been fabricated. Through-transmission A-scans have then been produced for each weld slice and compared with the corresponding numerical simulation. A comparison of the direction of ultrasound propagation through the weld for the two approaches shows quite good agreement. However, attenuation due to scattering at grain boundaries in the weld is poorly modelled in the simulation. In order to improve this, a better model of the weld is needed.

journal_name

Ultrasonics

journal_title

Ultrasonics

authors

Halkjaer S,Sorensen MP,Kristensen WD

doi

10.1016/s0041-624x(99)00103-1

subject

Has Abstract

pub_date

2000-03-01 00:00:00

pages

256-61

issue

1-8

eissn

0041-624X

issn

1874-9968

pii

S0041-624X(99)00103-1

journal_volume

38

pub_type

杂志文章

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