Quantitative evaluation of ultrasonic sound fields in anisotropic austenitic welds using 2D ray tracing model

Kolkoori, Sanjeevareddy; Rahaman, M.-U.; Chinta, P. K.; Kreutzbruck, M.; Prager, Jens

doi:10.1063/1.4716359

Cited by 4 publications

(2 citation statements)

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“…The Ogilvy model is a representative method for analyzing the anisotropic crystal structure of welds [ 29 , 30 ]. Figure 3 a shows the crystal structure of the Ogilvy model, which can be expressed as shown in Equation (1).…”

Section: Austenitic Steel Weld and Pa Probe Modelingmentioning

confidence: 99%

Analysis of Flaw Detection Sensitivity of Phased Array Ultrasonics in Austenitic Steel Welds According to Inspection Conditions

Kim

Cho

Park

2021

Sensors

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The anisotropy and inhomogeneity exhibited by austenitic steel in welds poses a challenge to nondestructive testing employing ultrasonic waves, which is predominantly utilized for the inspection of welds in power plants. In this study, we assess the reliability of phased array ultrasonic testing (PAUT) by analyzing the flaw detection sensitivity of ultrasonic beams in anisotropic welds, based on the inspection conditions. First, we simulated the sectorial scan technique, frequently employed for the inspection of actual welds, while taking into account the ultrasonic wave mode, frequency, and shape and position of a flaw. Subsequently, we analyzed the flaw sensitivity by comparing A-scan signals and S-scan results. The sensitivity analysis results confirmed the detection of all flaws by considering at least two inspection methods based on the shape and position of the flaw. Furthermore, we verified our model by performing an experiment under the same conditions as the simulation and found that the results were in agreement. Hence, we find that the simulation modeling technique proposed in this study can be utilized to develop suitable inspection conditions, according to the flaw characteristics or inspection environment.

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Section: Austenitic Steel Weld and Pa Probe Modelingmentioning

confidence: 99%

Analysis of Flaw Detection Sensitivity of Phased Array Ultrasonics in Austenitic Steel Welds According to Inspection Conditions

Kim

Cho

Park

2021

Sensors

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“…Another 2D ray tracing model was recently validated by using EFIT calculations [15] with very good agreement. In simulating the propagation of ultrasound through the weld model, the ultrasonic beam is approximated for high frequencies as a ray.…”

Section: Introductionmentioning

confidence: 99%

A Receiver Model for Ultrasonic Ray Tracing in an Inhomogeneous Anisotropic Weld

Li¹,

Persson²,

Wirdelius³

2014

JMP

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In this paper, a receiver model for ultrasonic ray tracing simulation is described. This is a complementary part of an existing simulation model and is the next step towards a numerical solution to the inverse problem and thus a NDT methodology for characterization of the dendrite orientation in a weld. The establishment of the receiver model is based on the electromechanical reciprocity principle. A concise retrospect of the weld model and the 2D model is made. The reciprocity principle is applied in an original way to handle the model problem including the back wall. Experimental qualitative validations for both P and SV waves on a specific weld are also made for C-scans included in this paper. Two different cases are studied. The first is a direct incidence of an ultrasonic ray towards the weld, and the second is a reflection from the back surface in the base material followed by an incidence to the weld. Even though mode-converted rays are excluded in the simulations, both the P and SV probe-models show the same behavior as the experimental results. The qualitative validation though reveals that it even if a thorough time-gating of received information would enable exclusion of mode-conversion in the model, inaccuracy of experimental results is affecting the evaluation of the weld model.

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Modeling a Multi-Echo Ultrasonic Waves Propagation using 2D Ray-Tracing Method

Santos

Villanueva

Neto

2018

2018 3rd International Symposium on Instrumentation Systems, Circuits and Transducers (INSCIT)

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Quantitative evaluation of ultrasonic sound fields in anisotropic austenitic welds using 2D ray tracing model

Cited by 4 publications

References 0 publications

Analysis of Flaw Detection Sensitivity of Phased Array Ultrasonics in Austenitic Steel Welds According to Inspection Conditions

Analysis of Flaw Detection Sensitivity of Phased Array Ultrasonics in Austenitic Steel Welds According to Inspection Conditions

A Receiver Model for Ultrasonic Ray Tracing in an Inhomogeneous Anisotropic Weld

Modeling a Multi-Echo Ultrasonic Waves Propagation using 2D Ray-Tracing Method

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