• 中文核心期刊
  • CSCD中国科学引文数据库来源期刊
  • 中国科技核心期刊
  • 中国机械工程学会材料分会会刊
Advanced Search
CHEN Lizong, SHI Junbo, XU Na, DING Ning, GUO Weimin, LIU Long. Reason for Fracture of Guard Board for Vehicle Cooling Device[J]. Materials and Mechanical Engineering, 2018, 42(8): 83-86. DOI: 10.11973/jxgccl201808017
Citation: CHEN Lizong, SHI Junbo, XU Na, DING Ning, GUO Weimin, LIU Long. Reason for Fracture of Guard Board for Vehicle Cooling Device[J]. Materials and Mechanical Engineering, 2018, 42(8): 83-86. DOI: 10.11973/jxgccl201808017
shu

Reason for Fracture of Guard Board for Vehicle Cooling Device

  • Research Center of Failure Analysis and Engineering Safety Assessment, Shandong Test and Analysis Center, Qilu University of Technology(Shandong Academy of Sciences), Jinan 250014, China

More Information
  • Received Date: June 18, 2017
  • Revised Date: July 01, 2018
    Graphical Abstract
    • Abstract
  • A guard board for vehicle cooling device fractured at the position for fixing nuts. Reason for fracture was analyzed by the methods such as microstructure analysis, fracture morphology observation and chemical composition detection. The results show that the guard board factured in a fatigue manner. Two fatigue crack sources existed on fracture. One was located in weld fusion zone of internal surface of the guard board and the nut, and the other was located in welding heat affected zone on outer surface. The crack propagation by alternating loading led to fracture of the guard board. Welding defects were the main cause of fatigue cracking.
    • FullText(HTML)
    • References (6)
  • [1]
    DOWLING N E. Fatigue and Fracture[M]//ASM Handbook Vol 19.[S.l.]:ASM International, 1996.
    [2]
    姚卫星. 结构疲劳寿命分析[M].北京:国防工业出版社,2003.
    [3]
    丁惠麟, 金荣芳. 机械零件缺陷、失效分析与实例[M].北京:化学工业出版社, 2013.
    [4]
    霍立兴. 焊接结构的断裂行为及评定[M]. 北京:机械工业出版社, 2000.
    [5]
    张良, 张广利, 杨锋平, 等. 环焊缝开裂原因分析[J].金属热处理,2014, 39(12):151-156.
    [6]
    周张义, 李芾. 焊接残余应力对钢结构疲劳性能影响研究[J]. 机车电传动, 2009(2):24-33.
    • Related Articles

Catalog

    Get Citation
    PDF
    XML
    Article views (2) PDF downloads (0) Cited by()
    Turn off MathJax
    Article Contents
    Abstract
    References

    Materials and Mechanical Engineering

    Address：99 Handan Road, ShanghaiPost Code: 200437

    Tel：021-65556775-368Email:mem@mat-test.com

    沪ICP备17055736号-5

    Supported by: Beijing Renhe Information Technology Co., Ltd.  Baidu Analytics

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return