B-SCAN FOURIER-TRANSFORM HOLOGRAPHY

被引：2

作者：

ALDRIDGE, EE

BEALE, MIJ

CLARE, AB

SHEPHERD, DA

机构：

[1] Instrumentation and Applied Physics Division, UK Atomic Energy Authority, AERE, Harwell, Didcot

来源：

NDT INTERNATIONAL | 1979年 / 12卷 / 04期

关键词：

D O I：

10.1016/0308-9126(79)90060-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A method is described whereby a scanned ultrasonic transducer is used to obtain a B-scan type image with enhanced lateral resolution. In contrast with conventional B-scan, the lateral resolution is equal to the focal spot size of the transducer and is independent of object depth. the ultrasonic signal is processed holographically and the image may be reconstructed either optically or using a small computer. Images of objects in a water bath and of a defective weld in a steel sample are presented. © 1979.

引用

页码：167 / 174

页数：8