웨지형 자동스캔 UT를 이용한 대차연결부의 결함 탐상
Defect Detection of Car body-Bogie part using Auto scan UT for Wedge type
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참고문헌
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초록
차체와 현가장치의 연결부는 용접 가공되어 있으며 작용조건 환경에 따라 결함이 발생할 수 있다, 각종 운용조건하에서 발생된 결함을 정도 높게 검출하고 진단하는 것은 중요하다. 초음파 검사(UT)는 주로 내부 결함을 검출하는 데 사용되고 있으나 반사각을 이용하여 표면 결함을 검출할 수 있다. 본 연구에서는 초음파 반사각을 이용한 웨지형 UT 탐촉자를 적용하여 용접부에 발생하는 결함 검출가능성에 대한 연구를 수행하였으며 그 결과 표면결함과 이면결함을 자동스캐너로 검출할 수 있었다.
Abstract
The connection part between the car body and the suspension is welded and the defects can be generated depending under the operating conditions. It is important to detect and diagnose the defects generated under various operating conditions intensively. The ultrasonic inspection is mainly used to detect an internal defect, but a surface defect can be detected using the reflection angle. In this study, the possibility of defect detection in weldment has been investigated by applying wedge UT probe and using ultrasonic reflection angle. The result shows that the surface and inner defects can be detected by automatic scanner.
참고문헌 (13)
- Health and Safety Executive (HSE), "Railway accident at Rickerscote" (1996), HMSO
- 김영식, "용접구조물의 최신 비파괴 검사기술", 대한용접접합학회지, 35(2), pp.63~70 (2017), 대한용접접합학회[DOI]
- J A Benyon, "The use of Monte Carlo Analysis to increase inspection intervals", Proc. International Wheelset Conference (2001)
- M. D. Leon, "Investigation of Horn Tip Patterns Effect in Ultrasonic Spot Welded A5052-H32 Joints", Proceeding of The Conference of the Korean Society of Mechanical Engineers, pp.2831~2832 (2013)
- M.D. Leon, "Development of Solid-state Process for Dissimilar Jointing of Ma gnesium", Aluminum Alloys: Ultrasonic Spot Welding, 2014, 669~670
- J.K. Na, "Nondestructive Inspection of Resistance Spot Welds Using Matrix Phased Array Ultrasonic Technology", Advanced Materials and Processes, pp.22~24 (2014)
- J.San Emeterio, "Wavelet Denoising of Ultrasonic A-Scans for Detection of Weak Signals", Proceeding of IEEE International Conference on Systems, Signals and Image, pp.48~51 (2012)
- 권석진, "적외선 서모그래피를 이용한 대차 용접시편의 결함 평가", 한국정밀공학회지, 32(7), pp.619~625 (2015), 한국정밀공학회[DOI]
- Hun-Hee Kim, "Simulation Based Investigation of Focusing Phased Array Ultrasound in Dissimilar Metal Welds", Nuclear Engineering and Technology, 48(1), pp.228~235 (2016), 한국원자력학회
- Hatanaka H, "Guideline of Innovative Processing and Control System-Non-Destructive Insection-", Jnl. of Japan Welding Society, 85(3), pp.295~300 (2016)
- Dong Jin Lee, "Design of Wedges for Dissimilar Metal Welds Inspection", KSME conference, 17
- Hsu, D. K, "Simultaneous Determination of Ultrasonic Velocity, Plate Thickness and Wedge AngleUsing One-sided Contact Measurements", NDT &EInternational, 27(2), pp.75~82 (1994)
- P.Plob, "Measurement of frequency dependent radiation patterns of Ultarasonic (wedge) transducers", AMA conference 2015-sensors 2015 and IRS 2015 (2015)