Theoretical Study on Near-Field Length of Acoustic Field for Phased Array Ultrasonic Testing

JIANG Xueping; YUE Yunfei; ZHUANG Fengdong; MAO Xiaohu; ZHENG Hui; HAN Qingbang

doi:10.11973/wsjc201710008

Nondestructive Testing > 2017 > 39(10): 33-36. > DOI: 10.11973/wsjc201710008

JIANG Xueping, YUE Yunfei, ZHUANG Fengdong, MAO Xiaohu, ZHENG Hui, HAN Qingbang. Theoretical Study on Near-Field Length of Acoustic Field for Phased Array Ultrasonic Testing[J]. Nondestructive Testing, 2017, 39(10): 33-36. DOI: 10.11973/wsjc201710008

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Theoretical Study on Near-Field Length of Acoustic Field for Phased Array Ultrasonic Testing

1. College of IOT Engineering, Hohai University, Changzhou 213022, China;
2. Special Equipment Safety Supervision Inspection Institute of Jiangsu Province, Changzhou 213016, China;
3. PetroChinaJinxi Petrochemical Company Machinery Factory, Huludao 125001, China;
4. ChinaSpecial Equipment Inspection Institute, Beijing 100013, China

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Received Date: February 08, 2017

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Abstract

Phased array ultrasonic testing method is of flexible, reliable, efficient and suitable for industrial nondestructive testing. Near-field length was investigated for phased array ultrasonic testing homogeneous isotropic work pieces using oblique incident pulse shear wave. The theoretical calculations of near-field length and the simulations of the acoustic field for various deflection angles in phased array ultrasound inspections were carried out. It is shown that the near-field length decrease with increasing deflection angles when using general plexi-glass wedge of inclination angle being 36.2°. The conclusions of this paper can provide some reference for designing the testing procedure.
- phased array ultrasonic testing,
- sector scan,
- near-field length,
- focusing acoustic wave

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