Pulse-Inversion Chirp-Coded Weld Harmonic Imaging (PI-CWHI) of Friction Stir Welded Butt-Joint

被引：1

作者：

Tabatabaeipour, M. ^{[1
]}

Hettler, J. ^{[1
]}

Sewell, N. T. ^{[2
]}

Wright, J. R. ^{[2
]}

Wright, J. C. S. ^{[2
]}

Delrue, S. ^{[1
]}

Van den Abeele, K. ^{[1
]}

机构：

[1] KU Leuven Kulak, Dept Phys, Wave Propagat & Signal Proc, B-8500 Kortrijk, Belgium

[2] Theta Technol Ltd, Exeter EX4 4RN, Devon, England

来源：

JOURNAL OF NONDESTRUCTIVE EVALUATION | 2017年 / 36卷 / 04期

关键词：

Friction stir welding; Micro-crack density; Zigzag line defects; Continuous oxide film; Pulse-inversion; Chirp-coded excitation; Harmonic imaging; Non-destructive testing; ELASTIC-WAVE SPECTROSCOPY; EXCITATION; DAMAGE; ULTRASOUND; DEFECTS; SYSTEM;

D O I：

10.1007/s10921-017-0437-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The microscopic size and the closed characteristics of zigzag line defects at the root of friction stir welded joints frequently result in a detection inability by off-the-shelf ultrasonic weld inspection techniques. To overcome this problem, we take advantage of a non-linear ultrasonic approach by employing a slanted contact pitch-catch mode scanning using chirp-coded excitation with subsequent pulse-inversion analysis. We validated that the observed nonlinearity correlates well with the micro-crack density along the weld path. Doing so, hot spots in the pulse-inversion chirp-coded weld harmonic images can be interpreted as zones with high concentrations of micro-flaws.

引用

页数：10

共 3 条

[1] Pulse-Inversion Chirp-Coded Weld Harmonic Imaging (PI-CWHI) of Friction Stir Welded Butt-Joint
M. Tabatabaeipour
J. Hettler
N. T. Sewell
J. R. Wright
J. C. S. Wright
S. Delrue
K. Van Den Abeele
Journal of Nondestructive Evaluation, 2017, 36
[2] Pulse Inversion Chirp Coded Tissue Harmonic Imaging (PI-CTHI) of Zebrafish Heart Using High Frame Rate Ultrasound Biomicroscopy
Jinhyoung Park
Ying Huang
Ruimin Chen
Jungwoo Lee
Thomas M. Cummins
Qifa Zhou
Ching-Ling Lien
K. K. Shung
Annals of Biomedical Engineering, 2013, 41 : 41 - 52
[3] Pulse Inversion Chirp Coded Tissue Harmonic Imaging (PI-CTHI) of Zebrafish Heart Using High Frame Rate Ultrasound Biomicroscopy
Park, Jinhyoung
Huang, Ying
Chen, Ruimin
Lee, Jungwoo
Cummins, Thomas M.
Zhou, Qifa
Lien, Ching-Ling
Shung, K. K.
ANNALS OF BIOMEDICAL ENGINEERING, 2013, 41 (01) : 41 - 52

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