Simulation and experimental analysis of austenitic stainless steel weld joints using ultrasonic phased array

Kumar, Santosh; Menaka, M.; Venkatraman, B.

doi:10.1088/1361-6501/ab48a3

Cited by 9 publications

(4 citation statements)

References 33 publications

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“…Simulation and experimental analysis of austenitic stainless steel weld joints using an ultrasonic phased array was presented by Kumar et al [13] by highlighting the improved detection performance of the dual matrix array over linear array.…”

Section: Acoustical Ndtande Methodsmentioning

confidence: 99%

Special Feature on Nondestructive Evaluation of Materials

Mulaveesala

2020

Meas. Sci. Technol.

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This volume of Measurement Science and Technology contains a Special Feature on Nondestructive Evaluation of Materials. The special feature puts together research articles within the common denominator of nondestructive testing and evaluation (NDT&E) methods, in particular for inspection of composites, semiconductors and metals. This special feature tried to demonstrate the breadth of applications for which one can use nondestructive testing techniques, together with very recent research developments, some clear demonstrations of the method at work in applications and some of the necessary background theory that underpins the basic testing techniques. This special feature was based on the adopted testing methodology and the principles involved, and further sub-classified into optical, thermal, electrical, acoustical, and microwave nondestructive testing methods. These are presented as follows with a brief description of the accepted manuscripts in each sub-section.

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Section: Acoustical Ndtande Methodsmentioning

confidence: 99%

Special Feature on Nondestructive Evaluation of Materials

Mulaveesala

2020

Meas. Sci. Technol.

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“…The elongated wedge designs [8] or delay lines [16,17] can simultaneously provide the ghost echo weakening and passive cooling of transducer. As reported by [20], the ghost echos can be also eliminated by use of transmitreceiver probes. However, the reported designs lead to a crucial increase in transducer dimensions and production costs.…”

mentioning

confidence: 89%

External Acoustical Damping on a Metallic Angle Wedge in a High Temperature Resistant Ultrasonic Probe

et al. 2022

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Ultrasonic probes for high-temperature applications are provided with metallic wedges, which can withstand the contact with the high temperature of the inspected structure. The ultrasonic signal travels within the wedge and gets reflected from its boundaries, causing interference signals called “ghost echoes”. The current work presents an investigation of the additional damping effect provided by porous sintered metal plates applied onto the surface of the wedge. In particular, the study evaluates the effect of damping plate thickness on the interference signal level at different transmission frequencies. Damping plates made of sintered metal SIKA-R 15 AX were attached to a wedge prototype made of steel 1.4301. The study revealed, that the most effective thickness of damping plates in the selected frequency interval of 1 to 4 MHz is equal to 4 mm. The evaluation of the interference signal has shown that the application of such damping plates to the wedge surface contributes to an additional attenuation of an interference signal of 10 to 30 dB after 500 µs of signal propagation.

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“…There are obvious acoustic impedance differences and anisotropies among different areas such as the weld zones, the fusion zones, the heat-affected zones, and the base metal in the weld [19]. Therefore, the weld can be regarded as a nonlinear region, and the steel plate region other than the weld can be regarded as a uniform linear region.…”

Section: Baseline-free Defect Detection Based On Reciprocity Lossmentioning

confidence: 99%

A novel baseline-free defect detection and localization method of welded steel plate based on reciprocity loss

He¹,

Xing²,

Li³

et al. 2020

Meas. Sci. Technol.

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In recent years, ultrasonic Lamb waves have been widely applied to the field of non-destructive testing of plate-like structures as they have outstanding advantages, such as low attenuation, high sensitivity, and wide detection range. Current studies about defect-detection of plate-like structures using Lamb waves mostly focus on non-weld plate-like structures, and defect-detection methods are based on baseline data. This paper proposes a novel baseline-free damage inspection method of welded plate-like structures, which is based on the principle of reciprocity loss and combines the OPTICS and K-means intelligent clustering algorithms to achieve accurate defect localization. In order to verify the location accuracy of the clustering defect localization algorithm, this paper performs comparative experiments between the ellipse imaging algorithm and the clustering algorithm, which use baseline data as health signals. The comparative experimental results show that the single-defect location accuracy of the clustering algorithm is greatly improved compared with the traditional ellipse algorithm. Moreover, in order to verify the validity and feasibility of the baseline-free method, this paper applies this method to obtain characteristic signals and combines the clustering algorithm to locate both single-defect and double-defects. The experimental result of baseline-free method shows that this method can successfully detect and locate multiple defects, which gets rid of the dependence of baseline data.

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Simulation and experimental analysis of austenitic stainless steel weld joints using ultrasonic phased array

Cited by 9 publications

References 33 publications

Special Feature on Nondestructive Evaluation of Materials

Special Feature on Nondestructive Evaluation of Materials

External Acoustical Damping on a Metallic Angle Wedge in a High Temperature Resistant Ultrasonic Probe

A novel baseline-free defect detection and localization method of welded steel plate based on reciprocity loss

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