Ultrasonic Flaw Recognition by Multi-Angle Phased Array Data Integration

2020 ◽  
Vol 3 (3) ◽  
Author(s):  
Wei Zhang ◽  
Xinyan Wang ◽  
Xuefei Guan
Keyword(s):  
Phased Array ◽  
Ultrasonic Inspection ◽  
Speckle Noise ◽  
Connected Component ◽  
Raw Data ◽  
Filtering Method ◽  
Intensity Matrix ◽  
Ultrasonic Flaw ◽  
Inspection Data ◽  
Inspected Object

Abstract This study presents a method of ultrasonic flaw identification using phased array ultrasonic inspection data. Raw data from each individual channel of the phased array ultrasonic inspection are obtained. The data trimming and de-noising are employed to retain the data within the boundary of the inspected object and remove the speckle noise components from the raw data, respectively. The resulting data are passed into a sequence of signal processing operations to identify embedded flaws. A shape-based filtering method is proposed to reduce the intensity of geometric noise components due to the non-uniform microstructures introduced in the manufacturing process. The resulting data matrices are integrated to obtain the intensity matrix of the possible flaw regions. Thresholding is applied to the intensity matrix to obtain the potential flaw regions, followed by a connected component analysis to identify the flaws. The overall method is demonstrated and validated using realistic phased array experimental data.

Post-Processing of Phased-Array Ultrasonic Inspection Data with Parallel Computing for Nondestructive Evaluation

2013 ◽  
Vol 33 (3) ◽  
pp. 342-351 ◽  
Author(s):  
Xuefei Guan ◽  
Jingdan Zhang ◽  
S. Kevin Zhou ◽  
El Mahjoub Rasselkorde ◽  
Waheed A. Abbasi
Keyword(s):  
Parallel Computing ◽  
Nondestructive Evaluation ◽  
Phased Array ◽  
Ultrasonic Inspection ◽  
Post Processing ◽  
Inspection Data

scholarly journals Ultrasonic Inspection for Welds with Irregular Curvature Geometry Using Flexible Phased Array Probes and Semi-Auto Scanners: A Feasibility Study

2022 ◽  
Vol 12 (2) ◽  
pp. 748
Author(s):  
Seong Jin Lim ◽  
Young Lae Kim ◽  
Sungjong Cho ◽  
Ik Keun Park
Keyword(s):  
Feasibility Study ◽  
Ultrasonic Testing ◽  
Test Specimen ◽  
Phased Array ◽  
Ultrasonic Inspection ◽  
Branch Pipe ◽  
Small Diameter ◽  
Data Consistency ◽  
Industrial Sites ◽  
Inspection Data

Pipes of various shapes constitute pipelines utilized in industrial sites. These pipes are coupled through welding, wherein complex curvatures such as a flange, an elbow, a reducer, and a branch pipe are often found. Using phased array ultrasonic testing (PAUT) to inspect weld zones with complex curvatures is faced with different challenges due to parts that are difficult to contact with probes, small-diameter pipes, spatial limitations due to adjacent pipes, nozzles, and sloped shapes. In this study, we developed a flexible PAUT probe (FPAPr) and a semi-automatic scanner that was improved to enable stable FPAPr scanning for securing its inspection data consistency and reproducibility. A mock-up test specimen was created for a flange, an elbow, a reducer, and a branch pipe. Artificial flaws were inserted into the specimen through notch and hole processing, and simulations and verification experiments were performed to verify the performance and field applicability of the FPAPr and semi-automatic scanner.

Preliminary Failure Assessment for Spiral Welded Defects of Pipeline

2008 ◽  
Author(s):  
Qingshan Feng ◽  
Yi-Han Lin ◽  
Fuxiang Wang ◽  
Bin Li
Keyword(s):  
Ultrasonic Inspection ◽  
Western China ◽  
Practical Significance ◽  
Oil Pipeline ◽  
Integrity Assessment ◽  
Failure Assessment ◽  
Transmission Pipeline ◽  
Collapse Failure ◽  
Inspection Data ◽  
Grade Assessment

The spiral welded defect of steel oil transmission pipeline is one of the main causes resulting in pipeline leakage accident. Hence the failure assessment for known-size spiral welded defects is an important step to ensure the safety of defected pipeline. Lack of suitable criterion for assessing the spiral welded manufacture defects of pipeline network in China, is a difficult technology problem to be solved desirably. This paper first summarized the basic idea of preliminary failure assessment (Grade 1A of code BS 7910:2005) with some insight of our own understanding, and then applied the preliminary failure assessment to the spiral welded defects of oil pipeline, with the use of ultrasonic inspection data of Daqing-Tieling old pipeline from LingYuan to XinMiao, Northeastern China. The calculation of both fracture and plastic collapse failure for spiral welded defects indicates some detected flaws of pipeline are not safe as the internal pressure is greater than 4.5 MPa. A leakage accident of spiral welded pipeline in Western China is also assessed through fractography analyses and failure calculations. This paper concludes that the preliminary failure assessment provides useful outcome for reference in making decision of inspection, integrity assessment and repair of spiral welded pipeline, and hence is a step of fundamental importance and practical significance before more accurate data becomes available for higher grade assessment.

scholarly journals Inspection of the Composite Materials

2021 ◽  
Vol 10 (3) ◽  
pp. 146
Author(s):  
Yaser A. Jasim ◽  
Senan Thabet ◽  
Thabit H. Thabit
Keyword(s):  
Composite Materials ◽  
Visual Inspection ◽  
Magnetic Particle ◽  
Phased Array ◽  
Ultrasonic Inspection ◽  
Test Method ◽  
Main Method ◽  
Destructive Test ◽  
Eddy Current Inspection ◽  
Non Destructive

<p><em>A non-destructive test method is the main method to examine most of the materials, composite materials in particular. There are too many </em><em>Non-Destructive Test (</em><em>NDT) methods to inspect the materials such as, Visual Inspection, Liquid Penetrate Inspection, Eddy-Current Inspection, Phased Array Inspection, Magnetic Particle Inspection and Ultrasonic Inspection</em><em>.</em></p><p><em>This paper aims to creat a unified methodology for engineers depending on reaserch onion to study the inspection of the composite materials.</em></p><p><em>The researchers concluded that NDT method is the most suitable method for testing any materials and the composite materials. They also recommended to choose the most suitable NDT method as every materials and composite materials have its own properties as well as the inspection methods had its own capabilities and limitations. </em></p>

Automated In-Process Phased Array Ultrasonic Inspection of Multipass Welds

2021 ◽  
Author(s):  
Randika Kosala Wathavana Vithanage ◽  
Ehsan Mohseni ◽  
Zhen Qiu ◽  
Yashar Javadi ◽  
David Lines ◽  
...  
Keyword(s):  
Phased Array ◽  
Ultrasonic Inspection

Phased Array Ultrasonic Inspection of Metal Additive Manufacturing Parts

2019 ◽  
Vol 38 (3) ◽  
Author(s):  
Ana Beatriz Lopez ◽  
João Santos ◽  
José Pedro Sousa ◽  
Telmo G. Santos ◽  
Luísa Quintino
Keyword(s):  
Additive Manufacturing ◽  
Phased Array ◽  
Ultrasonic Inspection ◽  
Metal Additive Manufacturing ◽  
Metal Additive

Ultrasonic Inspection of Thin Duplex Steel Welds by Phased Array

2015 ◽  
Vol 818 ◽  
pp. 256-259
Author(s):  
Erika Hodúlová ◽  
Ingrid Kovaříková ◽  
Beáta Šimeková ◽  
Koloman Ulrich
Keyword(s):  
Weld Joint ◽  
Phased Array ◽  
Ultrasonic Inspection ◽  
Base Material ◽  
Outer Diameter ◽  
Experimental Sample ◽  
Inspection Method ◽  
Duplex Steel ◽  
Steel Welds ◽  
Weld Root

The non-destructive inspection of duplex steels is a big challenge, being composed of ferrite and austenite, have some particularities. When using ultrasound, for instance, its waves propagate well in ferrite, but suffer strong attenuation, scattering and refraction in austenite. The aim of this work is to use the Phased Array ultrasonic inspection method for the thin (4 mm) duplex steel weld joint inspection. The experimental sample was made ​​of duplex steel shaped tube with an outer diameter of 44 mm and a wall thickness of 3.8 mm welded with a laser beam. The experiment was necessary to verify attenuation of duplex steel. On the base material and the weld joint were made the artificial defects, in which the adjusted sensitivity of the ultrasonic device was set.The result of the measuring was the defect echo coming from the weld root layer. The length (about 25 mm) can only be estimated due to the inaccurate constant velocity of probe motion along the surface.

scholarly journals Resolutional Analysis of Multiplicative High-Frequency Speckle Noise Based on SAR Spatial De-Speckling Filter Implementation and Selection

2019 ◽  
Vol 11 (9) ◽  
pp. 1041 ◽  
Author(s):  
Iman Heidarpour Shahrezaei ◽  
Hyun-cheol Kim
Keyword(s):  
High Frequency ◽  
Speckle Noise ◽  
Behavioral Model ◽  
Spatial Filter ◽  
Image Resolution ◽  
Assessment Procedure ◽  
Problem Solution ◽  
Data Generation ◽  
Sar Images ◽  
Raw Data

Due to the inherent characteristics of the electromagnetic wave scattering phenomenon, synthetic aperture radar (SAR) images are directly degraded by high-frequency multiplicative speckle (HMS) noise, which makes image de-speckling filter application and selection a challenge. In this regard, an adverse effects analysis of the HMS under implementation of seven different spatial de-speckling filters on a reference SAR image is considered in this paper. The investigation includes the formulation of the backscattered data and the HMS based on the pixel statistics and their distribution as an image noise behavioral analysis method. The resulting complex behavioral model is used for HMS power spectral density (PSD) function modeling. This paper also includes HMS system resolution effects analysis on the raw data generation (RDG) and the received frequency profile (RFP). An objective quality assessment procedure was also carried out to investigate both the de-speckled image resolution and the spatial filter evaluation in the presence of the HMS. As a result, the simulations verify that speckles are embedded within the high-frequency parts of the raw data, directly affecting the spatial resolution and the image resolution with non-specific patterns. The results also show that no spatial de-speckling filter consistently outperforms others, and their implementation is completely dependent on the texture, the system parameters, and their evaluation index. As a novel approach, HMS spectral behavioral modeling within the filtered images, as well as the proposed spatial de-speckling filter evaluation methods, are the proper techniques for optimum filter selection and specific purpose applications. The results are very helpful for remote sensing image restoration and data preservation when dealing with SAR images with a less fine resolution, such as ice-covered areas, coastal change detection, vegetation texture detection, geological structures mapping, and so forth. The SAR system resolution analysis is completed based on inversed problem solution (IPS) and with the help of a hybrid-domain image formation algorithm (IFA).

Sign in / Sign up

Export Citation Format

Share Document