대한안전경영과학회지 (Journal of the Korea Safety Management & Science)

  • 제10권4호
  • /
  • Pages.127-134
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  • 2008
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  • 1229-6783(pISSN)
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  • 2288-1484(eISSN)
대한안전경영과학회 (Korea Safety Management & Science)
권호 표지

패턴인식을 이용한 고장력강의 용접 구조건전성 평가에 대한 음향방출 사례연구: 인장시험을 중심으로

Acoustic Emission Studies on the Structural Integrity Test of Welded High Strength Steel using Pattern Recognition: Focused on Tensile Test

  • Kim, Gil-Dong (Department of Quality Management, Chungcheong College) ;
  • Rhee, Zhang-Kyu (Department of Mechanical Engineering, University of Incheon)
  • 발행 : 2008.12.30
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초록

The objective of this study is to evaluate the mechanical behaviors and structural integrity of the weldment of high strength steel by using an acoustic emission (AE) techniques. Monotonic simple tension and AE tests were conducted against the 3 kinds of welded specimen. In order to analysis the effectiveness of weldability, joinability and structural integrity, we used K-means clustering method as a unsupervised learning pattern recognition algorithm for obtained multi-variate AE main data sets, such as AE counts, energy, amplitude, hits, risetime, duration, counts to peak and rms signals. Through the experimental results, the effectiveness of the proposed method is discussed.

키워드

참고문헌

  1. R. K. Miller and P. McIntire, 1987, Nondestructive testing handbook (2nd ed.), Vol.5, Acoustic emission testing, ASNT
  2. A. A. Pollock, 1973, "Acoustic Emission-Acoustic Emission Amplitudes," Nondestructive Testing, 6 (5), pp.264-269 https://doi.org/10.1016/0029-1021(73)90074-1
  3. D. H. Jo, Z. K. Rhee, S. O. Park, B. G. Kim and C. K. Woo, 2007, "Fracture Characteristics of the Resistance Spot Welded Joints by Acoustic Emission," Transactions of KSMTE, 16 (2), pp.14-22
  4. J. T. Tou and R. C. Gonzalez, 1974, Pattern Recognition Principles, Addison-Wesley
  5. Korean Standards Association, 2001, KS B 0833, KSA
  6. Z. K. Rhee, C. K. Woo, S. O. Park, J. H. Yoon, J. H. Cho, B. G. Kim and Y. D. Koo, 2004, "A Study on the Acoustic Emission Characteristics of Weld Heat Affected Zone in SWS 490A Steel(1)," Transactions of KSMTE, 13 (4), pp.113-120
  7. Z. K. Rhee and C. K. Woo, 2005, "Experimental Studies on Joinability of SWS 490A High Tension Steel using Acoustic Emission Signals," Transactions of KSMTE, 14 (3), pp.87-85
  8. Z. K. Rhee and C. K. Woo, 2006, "A Study on the Acoustic Emission Characteristics of Weld Heat Affected Zone in SWS 490A Steel(2)," Transactions of KSMTE, 15 (5), pp.104-113
  9. J. D. Leaird, 1997, Acoustic emission training guide-How to ensure an accurate and valid acoustic emission, Greensland publishing company, Sacramento, California