[KSCI] Korea Science Citation Index Service

Modeling Phased Array Ultrasonic Testing of a Flat-Bottom Hole in a Single Medium

Park, Joon-Soo (Doosan heavy Industries & Construction Co., Ltd.)
Kim, Hak-Joon (School of Mechanical Engineering, Sungkyunkwan University)
Song, Sung-Jin (School of Mechanical Engineering, Sungkyunkwan University)
Seong, Un-Hak (Doosan heavy Industries & Construction Co., Ltd.)
Kang, Suk-Chull (Korea Institute of Nuclear Safety)
Choi, Young-Hwan (Korea Institute of Nuclear Safety)

Publication Information

Journal of the Korean Society for Nondestructive Testing / v.25, no.6, 2005 , pp. 467-474 More about this Journal

Abstract

The expanded multi-Gaussian beam model has recently been developed that can calculate the radiation beam field from a single, rectangular transducer with great computational efficiency. In this study, this model is adopted to calculate the radiation beam field for a phased array transducer with various time delays to achieve steering and/or focusing. The calculation beam fields are compared to those obtained by well known Rayleigh-Sommerfeld integral that provides the exact solution in order to explore the validity of the expanded multi-Gaussian beam model And then, this study proposes a complete ultrasonic measurement model including the expanded beam model, far-field scattering model and system efficiency, Using the proposed model, phased array ultrasonic testing signals for a flat-bottomed hole with/without focusing were performed.

Keywords

radiation beam; phased array ultrasonic transducer; modeling; expanded multi-Gaussian beam;

Citations & Related Records

Reference

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