The application of ultrasonic phased array technology to offshore platform structures inspection

2007 ◽  
Author(s):  
Shan Baohua ◽  
Wang Hua ◽  
Duan Zhongdong ◽  
Ou Jinping
Keyword(s):  
Phased Array ◽  
Offshore Platform ◽  
Array Technology ◽  
Ultrasonic Phased Array

Application of Visual Beam Ultrasonic Phased Array in Inspection of Weld in Tubular Node

2015 ◽  
Author(s):  
Shaojun Wang ◽  
Xiaoying Tang ◽  
Houde Yu ◽  
Yaozhou Qian ◽  
Jun Cheng ◽  
...  
Keyword(s):  
Welded Joints ◽  
Phased Array ◽  
Sound Beam ◽  
Ultrasonic Sound ◽  
Array Technology ◽  
Coverage Model ◽  
Ultrasonic Phased Array ◽  
Arbitrary Section ◽  
Tubular Joint ◽  
Low Efficiency

Responding to complexity and particularity welding on the geometry of TKY tubular node, this paper constructs mathematical model of tubular joint weld of arbitrary section by simplifying the geometry structure, and draws welded joints and ultrasonic sound beam lines based on the actual specifications in order to solve the problems of low efficiency, positioning difficulty, missing inspection and etc. The computeraided simulation technology can realize the visualization in the beam coverage model of welded joints, which can commendably guide the design of ultrasonic phased array inspection and overcome the blindness of the instrument detection parameters, thus improving the effectiveness and pertinence of the actual detection. Study shows that it is beneficial to enhance the effectiveness of the detection tubular joint weld by employment of Visual beam and ultrasonic phased array technology.

Production of Realistic Flaws and Their Meaning for Ultrasonic Testing

2019 ◽  
Vol 5 (3) ◽  
Author(s):  
Jiri Hodac ◽  
Pavel Mares ◽  
Jaromir Janousek ◽  
Martin Linhart
Keyword(s):  
Staff Training ◽  
Ultrasonic Testing ◽  
Phased Array ◽  
Fatigue Cracks ◽  
Ultrasonic Test ◽  
P 75 ◽  
Array Technology ◽  
Ultrasonic Echo ◽  
Ultrasonic Phased Array ◽  
Test Result

This work is designed to artificially create test specimens with flaws that behave the same way as real-function flaws when observed by nondestructive testing (NDT) technologies. Thus, the understanding of the detection limitations of NDT methods is needed. In this study, real, realistic, and artificial flaws were compared by ultrasonic phased array technology. Fatigue flaws, which belong to the most common structural issues (Ruzicka, M., Hanke, M., and Rost, M., 1987, Dynamicka Pevnost a Zivotnost, CVUT, Prague, Czech Republic, p. 75), are investigated. Measurements have revealed significant differences in the amplitude of ultrasonic echo from fatigue cracks in distinct phases of crack propagation. Studied specimens with realistic flaws have demonstrated their quality for calibration, staff training, and NDT system qualification. More realistic test specimens will increase ultrasonic test result reliability.

scholarly journals Composite Plate Phased Array Structural Health Monitoring Signal Reconstruction Based on Orthogonal Matching Pursuit Algorithm

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Yajie Sun ◽  
Feihong Gu ◽  
Sai Ji ◽  
Lihua Wang
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Phased Array ◽  
Matching Pursuit ◽  
Sampling Rate ◽  
Sampling Theorem ◽  
Structural Health ◽  
Array Technology ◽  
Ultrasonic Phased Array ◽  
Matching Pursuit Algorithm

In order to ensure the safety of composite components, structural health monitoring is needed to detect structural performance in real-time at the early stage of damage occurred. This is difficult to detect complex components with single sensor detection technology, so that ultrasonic phased array technology using multisensor detection will be selected. Ultrasonic phased array technology can scan the structure in all directions and angles without moving or less moving the probe and becomes the first choice of structural health monitoring. However, a large amount of data will be generated when using ultrasonic phased array with Nyquist sampling theorem for structural health monitoring and is difficult to storage, transmission, and processing. Besides, traditional Nyquist sampling cannot satisfy the sampling of large amounts of data without distortion, so a more efficient acquisition technique must be chosen. Compressive sensing theory can ensure that if the signal is sparse, it can be sampled in low sampling rate which is much less than two times of the sampling rate as defined by Nyquist sampling theorem for a large number of data and reconstructed in high probability. Then, the experiment result indicated that the orthogonal matching pursuit algorithm can reconstruct the signal completely and accurately.

Ultrasonic phased array technology for the non-destructive testing of marble sculptures

2016 ◽  
Vol 62 (1) ◽  
pp. 55-60 ◽  
Author(s):  
Frank Tiefensee ◽  
Peter Weber ◽  
Simon Kunz ◽  
Marisa Pamplona ◽  
Stefan Simon
Keyword(s):  
Phased Array ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Array Technology ◽  
Marble Sculptures ◽  
Ultrasonic Phased Array ◽  
Non Destructive

A study of dense-medium cyclone inner-wall abrasion based on ultrasonic phased array technology

Measurement ◽  
2018 ◽  
Vol 126 ◽  
pp. 58-64
Author(s):  
Zheng Gangfeng ◽  
Xia Wandong ◽  
Wu Xiaoming ◽  
Yan Yingchun
Keyword(s):  
Phased Array ◽  
Dense Medium ◽  
Array Technology ◽  
Ultrasonic Phased Array ◽  
Dense Medium Cyclone

Ultrasonic phased array inspection imaging technology for NDT of offshore platform structures

2008 ◽  
Author(s):  
Baohua Shan ◽  
Hua Wang ◽  
Yongning Liang ◽  
Zhongdong Duan ◽  
Jinping Ou
Keyword(s):  
Phased Array ◽  
Offshore Platform ◽  
Imaging Technology ◽  
Ultrasonic Phased Array
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