Enhancement of phased array ultrasonic signal in composite materials using TMST algorithm

被引：13

作者：

Benammar, Abdessalem ^{[1
]}

Drai, Redouane ^{[1
]}

Kechida, Ahmed ^{[1
]}

Dris, Lyamine ^{[1
]}

Chibane, Farid ^{[1
]}

机构：

[1] Welding & NDT Res Ctr CSC, BP 64, Cheraga 16014, Alger, Algeria

来源：

PROCEEDINGS OF THE 2015 ICU INTERNATIONAL CONGRESS ON ULTRASONICS | 2015年 / 70卷

关键词：

Ultrasonic Phased Array; Composite Materials; S-transform; TMST Algorithm; FLAW DETECTION; WAVELET;

D O I：

10.1016/j.phpro.2015.08.292

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this paper, we apply a new technique for the ultrasonic phased array signal enhancement. It is based on the threshold modified S-transform (TMST). The signal processing algorithms generally give very satisfactory results on synthetic signals verifying the implicit or explicit hypotheses on which they are constructed. The obtained performances on the real signals can be however different radically. Time-frequency analysis methods are mainly used to improve the defects detection resolution. Significant performance enhancement is confirmed when the proposed approach is tested with the simulation of the B-scan signals contain a closer delamination to the front face. The experimental results show that the TMST Algorithm can enhance the quality of image provided by composite materials contained delamination defect. (C) 2015 The Authors. Published by Elsevier B.V.

引用

页码：488 / 491

页数：4