Joint Quality Assessment of Ultrasonic Metal Welded Parts by Fracture Surface Evaluation

被引:1
|
作者
Mueller, Florian W. [1 ]
Zhao, Haolin [1 ,2 ]
Schiebahn, Alexander [1 ]
Reisgen, Uwe [1 ]
机构
[1] Rhein Westfal TH Aachen, Welding & Joining Inst, D-52062 Aachen, Germany
[2] Tsinghua Univ, Inst Adv Mfg iAM, Shenzhen Int Grad Sch, Shenzhen 518055, Peoples R China
关键词
joint formation; solid state welding; fracture surface analysis; quality feature determination; MICROSTRUCTURE; INTERFACE; STRENGTH;
D O I
10.3390/met14080892
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
In ultrasonic metal welding, low specific resistances and large joining surface cross-sections require the use of mechanical testing to quantify the joint quality. In this study, different quality features of ultrasonically welded joints made of pure copper sheet are investigated during the successive phases of joint formation. Two test series with different workpiece geometries are examined. It is shown that mechanical quality features such as shear and peel forces behave differently over the formation of the joint and are not transferable. As an alternative to these, laser scanning microscopy is used to record images of the fracture surface that describe the growth of the joint area during formation. The study finds that shear tensile force growth and joint area growth are non-linear and comparable, with optimized welds achieving joint areas of 30 mm2 out of 64 mm2 and 6 mm2 out of 16 mm2. Although overall quality increases with increasing welding time, the material strength in the joint zone decreases. Depending on the original rolling condition, between 43% and 59% of the original material strength can be identified as the joint strength. The automatic analysis of fracture images is a suitable alternative to mechanical testing for similar joints.
引用
收藏
页数:29
相关论文
共 50 条
  • [1] Fracture control assessment in the base metal and welded joint of a pipeline steel
    Costa, CA
    Bastian, FL
    FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 1999, 22 (12) : 1095 - 1101
  • [2] Fracture control assessment in the base metal and welded joint of a pipeline steel
    Costa, C.A.
    Bastian, F.L.
    Fatigue and Fracture of Engineering Materials and Structures, 1999, 22 (12): : 1095 - 1101
  • [3] Assessment on cleavage fracture of friction welded joint
    Jixie Qiangdu/Journal of Mechanical Strength, 2000, 22 (01): : 64 - 66
  • [4] Fracture behavior of mismatching welded joint with surface crack
    Zou, Jiquan
    Jing, Hongyang
    Xu, Lianyong
    Hanjie Xuebao/Transactions of the China Welding Institution, 2010, 31 (09): : 97 - 100
  • [5] Fatigue assessment of welded joint improved by ultrasonic impact treatment
    Chen G.
    Gong B.
    Meng Q.
    Deng C.
    Wang D.
    Hanjie Xuebao/Transactions of the China Welding Institution, 2019, 40 (08): : 118 - 123
  • [6] Measurement and evaluation of interface fracture processes in ceramic-metal joint by ultrasonic method
    Arai, Yoshio
    Tsuchida, Eiichiro
    Naito, Masakatsu
    Kobayashi, Hideo
    Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, 1995, 61 (587): : 1473 - 1479
  • [7] QUALITY OF THE JOINT IN COLD ROLL WELDED CLAD METAL
    GULYAEV, AS
    SKOBLOVA, LV
    AUTOMATIC WELDING USSR, 1978, 31 (11): : 36 - 39
  • [8] Assessment of subzero fracture of welded tubular K-Joint
    Bjoerk, T.
    Heinilae, S.
    Marquis, G.
    JOURNAL OF STRUCTURAL ENGINEERING-ASCE, 2008, 134 (02): : 181 - 188
  • [9] Magnetoelastic sensor for the welded joint quality inspection at ultrasonic welding of plastics
    Volkov, S.S.
    Orlov, Yu.N.
    Garanin, I.N.
    Svarochnoe Proizvodstvo, 2001, (05): : 25 - 30
  • [10] Evaluation of fracture toughness results and transferability to fracture assessment of welded joints
    Minami, F
    Toyoda, M
    FATIGUE AND FRACTURE MECHANICS: TWENTY-NINTH VOLUME, 1999, 1332 : 315 - 340