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논문 상세정보

원공결함을 갖는 SM45C 인장시험편의 강도해석과 음향방출에 관한 사례연구

Case Study on the Load-Deflection and Acoustic Emission Analysis of SM45C Coupons with a Circular Hole Defect under Tensile Loading

Abstract

The SM45C metallic coupons have been tested under static tensile loading with acoustic emission (AE) as the load-deflection curve mainly. In this study, we used AE to detect the yielding of material and AE techniques was applied to rapidly estimate the mechanical characteristics of a material. First, coupons without an artificial defect were tested at different cross-head speed. For all cases in this analysis, yielding point of SM45C coupons did not appear definitely compared to mild steel, whereas coupons start to generate AE counts upon yielding. So all cases are normalized to know the possibility of accelerated life test of a material. And next, coupons with different from sizes of circular hole defects were tested at the same cross-head speed of 5 mm/min. Results were classified into 3 classes and analyzed by AE amplitude & signal strength as a function of time. Summarizing the specific conclusions, we need to additional research considering plate with width-ratio in order to estimate the fracture mechanism.

저자의 다른 논문

참고문헌 (10)

  1. Tensi, H. M., 2004, 'The Kaiser-effect and its Scientific Background,' Journal of Acoustic Emission, Vol. 22, pp. s145-s16 
  2. Rhee, Z. K., and Woo, C. K., 2005, 'Experimental Studies on Joinability of SWS 490A High Tension Steel using Acoustic Emission Signals,' Transactions of the Korean Society of Machine Tool Engineers, Vol. 14, No. 3, pp. 87-85 
  3. Rhee, Z. K., 2007, 'A Study on the Wavelet Transform of Acoustic Emission Signals Generated from Fusion-Welded Butt Joints in Steel during Tensile Test and its Applications,' Transactions of the Korean Society of Machine Tool Engineers, Vol. 16, No. 1, pp. 26-32 
  4. Singh, S. K., Srinivasan, K., and Chakraborty, D., 2003, 'Acoustic Emission Studies on Metallic Specimen under Tensile Loading,' Materials and Design, 24, pp. 471-481 
  5. Miller, R. K., and McIntire, P., 1987, Nondestructive Testing Handbook(2nd ed.), Vol. 5, Acoustic Emission Testing, ASNT 
  6. Huang, M., Jiang, L., Liaw, P. K., Brooks, C. R., Seeley, R., and Klarstrom, D. L., 1998, 'Using Acoustic Emission in Fatigue and Fracture Materials Research,' Journal of Metals, Vol. 50, No. 11 
  7. Yoshimura, T., and Kano, S., 1987, 'A Method of Rapidly Estimating the Fatigue Limits by Acoustic Emission,' Journal of Acoustic Emission, Vol. 6, No. 3, pp. 145-149 
  8. Korean Standards Association, 2002, Test pieces for tensile test for metallics materials., KS B 0801 
  9. Mukhopadhyay, C. K., Jayakumar, T., Raj, B., and Ray, K. K., 2000, 'Acoustic Emission-Stress Intensity Factor Relations for Tensile Deformation of Notched Specimens of AISI Type 304 Stainless Steel,' Materials Science and Engineering, A293, pp. 137-145 
  10. http://www.matweb.com, MatWeb, The Online Materials Database JIS S45C Steel, Normalized 

이 논문을 인용한 문헌 (2)

  1. Rhee, Zhang-Kyu ; Oh, Jin-Soo 2009. "Acoustic Emission Source Classification of Finite-width Plate with a Circular Hole Defect using k-Nearest Neighbor Algorithm" 대한안전경영과학회지 = Journal of the Korea safety management & science, 11(1): 27~33 
  2. Rhee, Zhang-Kyu ; Woo, Chang-Ki 2009. "Acoustic Emission Source Characterization and Fracture Behavior of Finite-width Plate with a Circular Hole Defect using Artificial Neural Network" 한국공작기계학회논문집 = Transactions of the Korean society of machine tool engineers, 18(2): 170~177 

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