Experimental Validation and Applications of a Phased Array Ultrasonic Testing Probe Model
Doctoral thesis, 2023
In this thesis, the main purpose is thus to further validate the phased array probe model in simSUNDT by comparing simulation with corresponding experiments. An experimental platform is built to fully control the operation conditions and the set of testing results. Well-defined and representative artificial defects in test specimens are manufactured and inspected under some inspection cases in both simulations and experiments. Comparisons in the end show good correlations.
Upon validation of the probe model, it is used in several application attempts for possible technique developments. This includes optimization of the generated sound field from a phased array probe and verifying the validity of the used log-normal probability of detection model. The basic ability of generating full matrix capture inspection dataset is also explored. This could provide a simulation scheme for parametric studies to investigate an ultrasonic imaging algorithm, total focusing method, in terms of its defect characterization capabilities.
Nondestructive testing (NDT)
Phased array ultrasonic testing (PAUT)
Chalmers, Industrial and Materials Science, Engineering Materials
Experimental Validation of a Phased Array Probe Model in Ultrasonic Inspection
Ultrasonics,; Vol. 108(2020)
Experimental Validation and Application of a Phased Array Ultrasonic Testing Model on Sound Field Optimization
Journal of Modern Physics,; Vol. 12(2021)p. 391-407
Simulation-Based Investigation of a Probability of Detection (POD) Model Using Phased Array Ultrasonic Testing (PAUT) Technique
Journal of Nondestructive Evaluation,; Vol. 41(2022)
Xiangyu Lei, Håkan Wirdelius, Johan Carlson. ”The effect of ultrasound wave path estimation to defect characterization capability in half-skip total focusing method”. Submitted to conference.
Xiangyu Lei, Håkan Wirdelius, Johan Carlson. ”Model-based parametric study of surface-breaking defect characterization using half-skip total focusing method”. Submitted to journal.
In-situ detection of redeposited spatter and its influence on the formation of internal flaws in laser powder bed fusion
Additive Manufacturing,; Vol. 47(2021)
This thesis work therefore focuses on further validation of the mathematical model in simSUNDT. More specifically, it is the newly implemented phased array ultrasonic testing (PAUT) probe model that have been further validated. The validation is progressed through comparing computed results with experiments under the same controlled ultrasonic inspection scenario. The comparisons show good correlations in general and the PAUT probe model is concluded as a good complement to experiments.
After validation, the probe model is applied in some research scenarios in the thesis. This again reveals one of the advantages of mathematical models in terms of technique development. The applications attempted in the thesis include parameter optimization of ultrasonic inspection, verification of a statistic model for quantifying detection capability, and parametric study of defect characterization capability using an advanced imaging algorithm.
In summary, this thesis contributes to a further step in mathematical model validation in ultrasonic nondestructive testing. It also explores several research and application possibilities. All these works in a broader view aim at completing the mathematical model and the software to be a useful and powerful tool for a sustainable market and future.
Adaptive Non Destructive Testing of Additive Manufacturing
VINNOVA (2017-04856), 2017-11-10 -- 2020-06-30.
Other Mechanical Engineering
Reliability and Maintenance
Areas of Advance
Doktorsavhandlingar vid Chalmers tekniska högskola. Ny serie: 5184
VDL, Chalmers Tvärgata 4C, Göteborg
Opponent: Gareth Pierce, University of Strathclyde, Glasgow UK (Zoom passcode: 029678)