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大韓溶接學會誌 = Journal of the Korean Welding Society v.21 no.5, 2003년, pp.547 - 554   피인용횟수: 2

비파괴 계장화 압입시험기법을 통한 API X65 배관 용접부 잔류응력 평가
Evaluation of Residual Stress on Welded Joint in API X65 Pipe Line through Nondestructive Instrumented Indentation Technique

지원재   (서울대학교 재료공학부UU0000691  ); 이윤희   (서울대학교 재료공학부UU0000691  ); 김우식   (한국가스공사 연구개발원CC0186958  ); 김철만   (한국가스공사 연구개발원CC0186958  ); 권동일   (서울대학교 재료공학부UU0000691  );
  • 초록

    Apparent mechanical properties in structural components can be different from the initially designed values due to the formation of the residual stress in metal forming and welding. Therefore, the evaluation of residual stress has great importance in the reliability diagnosis of structural components. A nondestructive instrumented indentation technique has been proposed to evaluate various strength concerning mechanical properties from the analysis of load-depth curve. In this study, quantitative residual stress estimation on API X65 welded joints for natural gas pipeline was performed by analyzing the variation of indentation loading curve by residual stress through a new proposed theoretical model. The residual stress from the indentation method was compared with that from the saw-cutting method.


  • 주제어

    Residual stress .   Advanced indentation .   Welded joint .   Saw-cutting .   Pipeline steel.  

  • 참고문헌 (14)

    1. Residual stresses in DLC/Si and Au/Si systems: application of a stress-relaxation model to the nanoindentation technique , Y.H.Lee;D.Kwon , J. Mater. Res. / v.17,pp.901-906,
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    4. Determination of Non-uniform Residual Stress by the Hole Drilling Method , J.W.Joo;C.K.Park , Trans KSME A / v.22,pp.268-277,
         
    5. Analysis of bending residual stress in SS400 steel beam using continuous indentation technique and stress interaction model , Y.H.Lee;W.j.JI;D.Son;J.i.Jang;D.Kwon , J. Kor. Inst. Met. & Mater. / v.40,pp.1042-1047,
    6. Influences of stress on the measurement of mechanical properties using nanoindentation: part Ⅰ. experimental studies in an aluminum alloy , T.Y.Tsui;W.C.Oliver;G.M.Pharr , J. Mater. Res. / v.11,pp.752-759,
    7. M.Koichi , Analysis of welded structure / v.,pp.148,
    8. Influences of stress on the measurement of mechanical properties using nanoindentation: part Ⅱ. finite element simulations , A.Bolshakov;W.C.Oliver;G.M.Pharr , J. Mater. Res. / v.11,pp.760-768,
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  • 이 논문을 인용한 문헌 (2)

    1. Ko Dae-Cheol ; Hwang Won-Ho ; Lee Sang-Kon ; Kim Byung-Min 2006. "A Study on the Method of Residual Stress Relaxation during Wire Drawing and Evaluation of Residual Stress Using Nano Indentation Test" 한국정밀공학회지 = Journal of the Korean Society of Precision Engineering, 23(5): 162~169     
    2. Choi, Chul-Young ; Kim, Jun-Ki ; Hong, Jae-Keun ; Yeom, Jong-Taek ; Park, Yeong-Do 2011. "Evaluation of Mechanical Properties by Using Instrumented Indentation Testing for Resistance Spot Welds" 한국분말야금학회지 = Journal of Korean powder metallurgy institute, 18(1): 64~72     

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