Pulse compression based phased array ultrasonic inspection: Optimization of the system and the code selection

The use of pulse-compression in ultrasonic non-destructive testing has assured, in various applications, a significant improvement in the signal-to-noise ratio. In this work, the technique is combined with linear phased array to improve the sensitivity and resolution in the ultrasonic imaging of highly attenuating and scattering materials. A series of tests were conducted on a 60 mm thick carbon fiber reinforced polymer benchmark sample with known defects using a custom-made pulse-compression-based phased array system. Sector scan and total focusing method images of the sample were obtained with the developed system and were compared with those reconstructed by using a commercial pulse-echo phased array system. While an almost identical sensitivity was found in the near field, the pulse-compression-based system surpassed the standard one in the far-field producing a more accurate imaging of the deepest defects and of the backwall of the sample.

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Phased array ultrasonic inspection of low-pressure steam turbine rotors - curved axial entry fir tree roots

Insight - Non-Destructive Testing and Condition Monitoring ◽

10.1784/insi.2011.53.2.71 ◽

2011 ◽

Vol 53 (2) ◽

pp. 71-75 ◽

Cited By ~ 2

Author(s):

C Charlesworth

Keyword(s):

Steam Turbine ◽

Phased Array ◽

Ultrasonic Inspection ◽

Low Pressure ◽

Tree Roots ◽

Pressure Steam ◽

Turbine Rotors

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Inspection of the Composite Materials

CSRID (Computer Science Research and Its Development Journal) ◽

10.22303/csrid.10.3.2018.146-152 ◽

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

A non-destructive test method is the main method to examine most of the materials, composite materials in particular. There are too many Non-Destructive Test (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.This paper aims to creat a unified methodology for engineers depending on reaserch onion to study the inspection of the composite materials.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.

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Automated In-Process Phased Array Ultrasonic Inspection of Multipass Welds

10.1115/1.0002309v ◽

2021 ◽

Author(s):

Randika Kosala Wathavana Vithanage ◽

Ehsan Mohseni ◽

Zhen Qiu ◽

Yashar Javadi ◽

David Lines ◽

...

Keyword(s):

Phased Array ◽

Ultrasonic Inspection

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Phased Array Ultrasonic Inspection of Metal Additive Manufacturing Parts

Journal of Nondestructive Evaluation ◽

10.1007/s10921-019-0600-y ◽

2019 ◽

Vol 38 (3) ◽

Cited By ~ 7

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

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Ultrasonic Inspection of Thin Duplex Steel Welds by Phased Array

Materials Science Forum ◽

10.4028/www.scientific.net/msf.818.256 ◽

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.

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Ultrasonic Flaw Recognition by Multi-Angle Phased Array Data Integration

Journal of Nondestructive Evaluation Diagnostics and Prognostics of Engineering Systems ◽

10.1115/1.4046722 ◽

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.

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