Probability of detection of discontinuities by ultrasonic phased array inspection of 9% Ni steel joints welded with alloy 625 as the filler metal

Ultrasonics ◽  
2022 ◽  
Vol 119 ◽  
pp. 106582
Author(s):  
João da Cruz Payão Filho ◽  
Vinicius Pereira Maia ◽  
Elisa Kimus Dias Passos ◽  
Rodrigo Stohler Gonzaga ◽  
Diego Russo Juliano
Keyword(s):  
Phased Array ◽  
Filler Metal ◽  
Probability Of Detection ◽  
Alloy 625 ◽  
Ultrasonic Phased Array ◽  
Steel Joints

High-Density Polyethylene Piping Butt-Fusion Joint Examination Using Ultrasonic Phased Array

2009 ◽  
Author(s):  
Caleb Frederick ◽  
Allen Porter ◽  
Dave Zimmerman
Keyword(s):  
High Density Polyethylene ◽  
Phased Array ◽  
Low Frequency ◽  
Cold Fusion ◽  
Probability Of Detection ◽  
High Density ◽  
Low Frequency Ultrasound ◽  
Ultrasonic Phased Array ◽  
Joint Examination ◽  
Automated Data Acquisition

With the increasing use of High-Density Polyethylene (HDPE) piping for nuclear applications, nondestructive evaluation is an important tool for evaluation of the integrity in fused joints. This paper will discuss the method of using Ultrasonic Phased Array for inspecting Butt-Fusion (BF) joints in HDPE piping. The benefit of Phased Array is the ability to perform a volumetric inspection using multiple angles which greatly increases the probability of detection of defects, and allows the data to be analyzed using a representative 2-dimentional image of the joint [1]. It has been determined that successfully producing BF joints is highly dependent on environmental and mating-surface conditions. The primary defects of concern are lack-of-fusion (LOF), an area of the joint where there is no bond [2], cold fusion (CF), an area of partial bond, and inclusion. Phased Array has successfully demonstrated the ability of detecting and characterizing these defects using low frequency ultrasound. Factors addressed include joint location, wall thickness, material temperature, transducer wedge material, and manual vs. automated data acquisition.

High-Density Polyethylene Piping Butt-Fusion Joint Examination Using Ultrasonic Phased Array

2010 ◽  
Vol 132 (5) ◽  
Author(s):  
Caleb Frederick ◽  
Allen Porter ◽  
David Zimmerman
Keyword(s):  
High Density Polyethylene ◽  
Phased Array ◽  
Low Frequency ◽  
Cold Fusion ◽  
Probability Of Detection ◽  
High Density ◽  
Two Dimensional Image ◽  
Low Frequency Ultrasound ◽  
Ultrasonic Phased Array ◽  
Joint Examination

With the increasing use of high-density polyethylene (HDPE) piping for nuclear applications, nondestructive evaluation is an important tool for evaluation of the integrity in fused joints. This paper will discuss the method of using ultrasonic phased array for inspecting butt-fusion (BF) joints in HDPE piping. The benefit of phased array is the ability to perform a volumetric inspection using multiple angles, which greatly increases the probability of detection of defects and allows the data to be analyzed using a representative two-dimensional image of the joint. It has been determined that successfully producing BF joints is highly dependent on environmental and mating-surface conditions. The primary defects of concern are lack-of-fusion, an area of the joint where there is no bond, cold fusion, an area of partial bond, and inclusion. Phased array has successfully demonstrated the ability of detecting and characterizing these defects using low frequency ultrasound. Factors addressed include joint location, wall thickness, material temperature, transducer wedge material, and manual versus automated data acquisition.

Validation of an Ultrasonic-Phased Array Method for Testing of Circumferential Welds at Thin-Walled Pipes

NDT World ◽  
2016 ◽  
Vol 19 (3) ◽  
pp. 30-33
Author(s):  
Бросиус ◽  
David Brosius ◽  
Шуберт ◽  
Frank Schubert ◽  
Хильманн ◽  
...  
Keyword(s):  
Wall Thickness ◽  
Power Plants ◽  
Phased Array ◽  
Practical Method ◽  
Probability Of Detection ◽  
Circumferential Welds ◽  
Ultrasonic Methods ◽  
Ultrasonic Phased Array ◽  
Thin Walled ◽  
The Moment

Introduction. For testing of circumferential welds at thin-walled pipes with wall thickness lower than 6 mm using ultrasonic methods no standardization is available at the moment. Nevertheless, there are newest technologies available such as ultrasonic-phased-array technique and semi-automated handheld-scanner for pipes, with which it is possible to achieve promising and reliable results in that area. In order to bring the technique in operation in the field of coal-fired power plants or petrochemical industry a validation is needed, which will be approved by the inspecting authorities. Method. In that article we will present a successful validation of an ultrasonic-phased- array method for testing circumferential welds at thin-walled pipes with a wall thickness lower than 6 mm. Therefore, the complete geometry area was divided into several clusters, and single elements of that matrix were validated. The procedure conforms to the guideline VGB R-516 and other established standards. Besides theoretical analysis including simulations of the sound paths and reflections, extensive practical tests were performed. For this purpose six typical types of defects were analyzed by using a large number of test samples and the probability of detection was determined using this practical method. Result. The result of this work is a report for validation for each geometry cluster of the pipes including an inspection instruction and a qualification instruction for the testing equipment and the calibration samples. Conclusion. Based on that validations the ultrasonic-phased-array method was accepted by the inspecting authorities and thereby allowed to use in the regulated area of coal-fired power plants by a NDT-service provider and was applied very successful at several thousand welds.

Ultrasonic Phased Array Examination of Butt-Fusion Joints in High-Density Polyethylene

2009 ◽  
Author(s):  
Caleb Frederick ◽  
Allen Porter ◽  
David Zimmerman
Keyword(s):  
High Density Polyethylene ◽  
Phased Array ◽  
Low Frequency ◽  
Cold Fusion ◽  
Probability Of Detection ◽  
High Density ◽  
Low Frequency Ultrasound ◽  
Ultrasonic Phased Array ◽  
Joint Location ◽  
Automated Data Acquisition

With the increasing use of High-Density Polyethylene (HDPE) piping for nuclear applications, nondestructive evaluation is an important tool for evaluation of the integrity in fused joints. This paper will discuss the method of using Ultrasonic Phased Array for inspecting Butt-Fusion (BF) joints in HDPE piping. The benefit of Phased Array is the ability to perform a volumetric inspection using multiple angles which greatly increases the probability of detection of defects, and allows the data to be analyzed using a representative 2-dimentional image of the joint [1]. It has been determined that successfully producing BF joints is highly dependent on environmental and mating-surface conditions. The primary defects of concern are lack-of-fusion (LOF), an area of the joint where there is no bond [2], cold fusion (CF), an area of partial bond, and inclusion. Phased Array has successfully demonstrated the ability of detecting and characterizing these defects using low frequency ultrasound. Factors addressed include joint location, wall thickness, material temperature, transducer wedge material, and manual vs. automated data acquisition.

Real-Time 3D Imaging using an Air-Coupled Ultrasonic Phased-Array

2020 ◽  
pp. 1-1 ◽  
Author(s):  
Gianni Allevato ◽  
Jan Hinrichs ◽  
Matthias Rutsch ◽  
Jan Adler ◽  
Axel Jager ◽  
...  
Keyword(s):  
Real Time ◽  
3D Imaging ◽  
Phased Array ◽  
Ultrasonic Phased Array
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