scholarly journals Design Considerations for the Use of Ultrasonic Phased Array Probes in Weld Inspection

2000 ◽  
Author(s):  
Paul A. Meyer
Keyword(s):  
Ultrasonic Testing ◽  
Phased Array ◽  
Design Considerations ◽  
Array Probe ◽  
Ultrasonic Phased Array ◽  
Weld Inspection ◽  
Service Inspection

Ultrasonic testing of metal welds has been in use for many years. Scanning methods using both contact and immersion methods are often used at the time of manufacture and also during periodic in-service inspection programs. But because of a variety of component configurations and potential flaw geometries it is often necessary to perform several inspections, each with a different probe configuration to assure adequate defect delegability. It is possible that a properly designed phased array probe can perform several different inspections without changing hardware thereby reducing inspection times. This presentation reviews the design and operation of ultrasonic phased array transducers and the necessary features to achieve the desired performance. Situations in which these probes have already been implemented effectively are also discussed.

Cross-coupling Properties of Ultrasonic Phased Array Probe

2000 ◽  
Vol 39 (Part 1, No. 10) ◽  
pp. 6077-6083 ◽  
Author(s):  
Hideo Adachi ◽  
Tomoki Funakubo
Keyword(s):  
Phased Array ◽  
Cross Coupling ◽  
Array Probe ◽  
Ultrasonic Phased Array

Development of Ultrasonic Phased Array Probe for SAW Seam Inspection of UOE Pipe

2007 ◽  
Author(s):  
Masaki Yamano ◽  
Hiroyuki Okubo ◽  
Takumi Horikiri ◽  
Makoto Nagase
Keyword(s):  
Phased Array ◽  
Inspection System ◽  
Line Pipe ◽  
Array Probe ◽  
Ultrasonic Phased Array ◽  
Detection Capabilities ◽  
Girth Welds ◽  
Welded Seam ◽  
Submerged Arc ◽  
Pipe Mill

The requirements of Ultrasonic Testing, such as DNV, ISO specification etc., for longitudinal submerged arc weld (SAW) seam of UOE pipe become severe to the offshore steel line-pipe with high grade and heavy wall thickness. In order to satisfy the requirements, testing method with multi-probe arrangement have been widely applied in the pipe manufacture. Recently, the phased array technique has been applied for inspection of girth welds of pipeline and longitudinal ERW (electric resistance welded) seam instead of multi-probe method. But the inspection system with conventional phased array probe has many difficulty to apply for inspection longitudinal SAW seam of UOE pipe, because of defect detection capabilities, array elements arrangement, and so on. The authors have developed an applicable ultrasonic phased array probe to satisfy the severe requirements for longitudinal SAW seam of UOE pipe. This paper presents the results of our original designed array probe, which has been composed of 32-transducer elements mounted on cylindrical-shaped plastics, and also compares the inspection results to those obtained on the conventional multi-probe and our developed array probe in the UOE pipe mill.

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.

Full Matrix Capture and Total Focusing Method: The Next Evolution in Ultrasonic Testing

NDT World ◽  
2019 ◽  
pp. 37-41
Author(s):  
Алан Колдер ◽  
Alan Caulder
Keyword(s):  
Ultrasonic Testing ◽  
Phased Array ◽  
New Techniques ◽  
Full Matrix ◽  
Major Improvement ◽  
Ultrasonic Phased Array

Full matrix capture and the total focusing method are considered by many NDT experts to be the next major improvement to phased array ultrasonic testing. This article showcases some advantages the new techniques offer compared to the capabilities of traditional ultrasonic phased array.

Ultrasonic Phased Array 3D Imaging for the Steel Butt Weld Defects

2015 ◽  
Vol 727-728 ◽  
pp. 799-803 ◽  
Author(s):  
Zhi Hao Liu ◽  
Chao Lu
Keyword(s):  
Phased Array ◽  
Programming Algorithm ◽  
Butt Weld ◽  
Test Information ◽  
Detection Technology ◽  
Array Probe ◽  
Ultrasonic Phased Array ◽  
Imaging Detection ◽  
Linear Array Probe ◽  
Array Imaging

Ultrasonic phased array imaging detection technology combinating the focused beam and array probe movement can get powerful test information. It has been widely used in the steel butt weld detection. For making up the limitations of 2D view, in this paper,we used one-dimensional linear array probe, got 2D slice view data obtained by phased array ultrasonic S-scan, through software programming algorithm to realize 3D reconstruction of steel butt weld typical defects. Experiment shows that it can display more intuitive performance of the defects in space. Revealing a better shape, size and orientation information. Providing a reference for the final evaluation of the defect.

Research on Phased Array Ultrasonic Technique for Testing Tube to Tube-Sheet Welds of Heat Exchanger

2016 ◽  
Author(s):  
Weican Guo ◽  
Shengjie Qian ◽  
Zhangwei Ling ◽  
Dongsheng Hou
Keyword(s):  
Heat Exchanger ◽  
Ultrasonic Testing ◽  
Phased Array ◽  
Incomplete Fusion ◽  
Testing System ◽  
Ultrasonic Frequency ◽  
Ultrasonic Technique ◽  
Tube Sheet ◽  
Element Size ◽  
Array Probe

The tube to tube-sheet weld is the main connection structure of heat exchanger. This paper presents the phased array ultrasonic technique for testing the tube to tube-sheet welds of heat exchanger. The optimization analysis of phased array parameters and the simulation on the acoustic field with CIVA software were completed. The mentioned phased array parameters included array elements, array element size, deflection angle, ultrasonic frequency and so on. An ultrasonic testing system was designed and fabricated in accordance with the structure of heat exchange tube and fillet welds position. The ultrasonic C-scan was carried out by the ultrasonic testing system with its circumferential scanning by a mechanical scanning device while the axial electronic linear scanning by the phased array probe. At last, tests on samples with the porosity and incomplete fusion flaws were performed by the ultrasonic testing system. Experimental results showed that the phased array ultrasonic technique could effectively detect the porosity flaws and the incomplete fusion flaws in the tube to tube-sheet welds of heat exchanger.

Development of an Ultrasonic Phased Array Testing System That Can Evaluate Quality of Weld Seam of High-Quality ERW Pipes

2012 ◽  
Author(s):  
Yutaka Matsui ◽  
Yukinori Iizuka ◽  
Masahito Suzuki ◽  
Eiichi Urahata ◽  
Tomohiro Inoue ◽  
...  
Keyword(s):  
Ultrasonic Testing ◽  
Phased Array ◽  
Weld Seam ◽  
Testing System ◽  
Beam Size ◽  
High Quality ◽  
Ultrasonic Phased Array ◽  
Weld Seams ◽  
Focused Beam

A high sensitivity ultrasonic testing system for inspection of the weld seam of ERW pipes was developed. The factors that affect the quality of the weld seam were investigated using an ultrasonic C-scan method with a focused probe and samples sliced from weld seams. As the result, it was found that a scattered-type penetrator consisting of micro oxides is a key factor in the quality of the weld seam. Absorbed energy in the Charpy impact test can be evaluated by the ultrasonic echo amplitude with the optimized focused beam size (about 1mm2) to detect the scattered-type penetrator. In order to evaluate the density of the scattered-type penetrator in weld seams with the optimum focused beam size for pipe, a point focused beam tandem method was developed by applying the ultrasonic phased array technique. The sensitivity of the developed method is 20dB higher for a standard artificial through drilled hole whose diameter is 1.6mm. A precise seam tracking system was also developed for application of the point focused beam tandem method to the actual ERW pipe manufacturing process. Since the allowance for applying the focused beam to the weld seam is very narrow, i.e., about 1mm, a circumference multi-point simultaneous receiving technique and thermal image-type seam detection technique were developed. The developed ultrasonic testing system has been in operation at the 24″ ERW mill at East Japan Works (Keihin District) of JFE Steel Corporation since March 2011. The combination of the ultrasonic testing system and an oxide control technique now contributes to production of high-performance, high-quality ERW pipe “Mighty Seam®” for use in frigid environments.

Key Technology and Application of Visual Inspection of Buried Polyethylene Pipeline

2017 ◽  
Author(s):  
Shaojun Wang ◽  
Xiaoying Tang ◽  
Pan Song ◽  
Bin Ren ◽  
Yaozhou Qian ◽  
...  
Keyword(s):  
Ultrasonic Testing ◽  
Phased Array ◽  
Safety Hazards ◽  
Pipeline Inspection ◽  
Position Detection ◽  
Detection Technology ◽  
Potential Safety ◽  
Ultrasonic Phased Array ◽  
Scanning Imaging ◽  
Ground Penetrating

Responding to non-conductive, non-magnetic material characteristics of polyethylene (PE) pipe, this paper comes up with the ground penetrating radar (GPR) detection for urban PE gas pipeline visualization research in order to solve the problems of positioning difficulty, and to avoid potential safety hazards caused by undefined positioning of PE pipeline, so that it can provide some experience to the application of position detection technology to locate buried polyethylene pipeline. Responding to the special material properties and welding form and based on the analysis of traditional ultrasonic testing for polyethylene butt-fusion joint, this paper comes up with an ultrasonic phased array dynamic focusing and S scanning imaging technology, to make a testing experiment on polyethylene butt-fusion joint. Results of the phased array ultrasonic testing of cracks in polyethylene butt-fusion joints shows that the testing method is feasible, and verifies the buried polyethylene butt-fusion joints engineering. This research would provide experience to the application of ultrasonic phased array technology in buried polyethylene pipeline inspection.

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