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Combined cycle fatigue testing with ultrasonic frequency component of S350 steel welded joint

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Abstract

A combined cycle fatigue (CCF) testing system with ultrasonic frequency component was developed to evaluate the CCF properties of S350 steel welded joints in this study. The fatigue testing results indicated that the S-N curves of CCF did not have fatigue limit, which agreed with those of pure high frequency fatigue of welded joints. The S-N curves showed that the CCF strength of welded joints dropped greatly with the increasing interaction between high and low frequency fatigue loading. An approximation design method of CCF was presented using amplitude envelope as the stress range.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China

    Yang Liu  (柳 阳), Dongpo Wang  (王东坡), Caiyan Deng  (邓彩艳), Liangchen Wu  (吴良晨) & Baoming Gong  (龚宝明)

  2. Tianjin Key Laboratory of Advanced Joining Technology, Tianjin, 300072, China

    Yang Liu  (柳 阳), Dongpo Wang  (王东坡), Caiyan Deng  (邓彩艳), Liangchen Wu  (吴良晨) & Baoming Gong  (龚宝明)

  3. School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, 471003, China

    Danqing Yin  (尹丹青)

Authors
  1. Yang Liu  (柳 阳)
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  2. Dongpo Wang  (王东坡)
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  3. Caiyan Deng  (邓彩艳)
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  4. Liangchen Wu  (吴良晨)
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  5. Danqing Yin  (尹丹青)
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  6. Baoming Gong  (龚宝明)
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Corresponding author

Correspondence to Baoming Gong  (龚宝明).

Additional information

Supported by the National Natural Science Foundation of China (No. 51305295, No. 51375331 and No. 51105133).

Liu Yang, born in 1988, male, doctorate student.

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Liu, Y., Wang, D., Deng, C. et al. Combined cycle fatigue testing with ultrasonic frequency component of S350 steel welded joint. Trans. Tianjin Univ. 20, 435–438 (2014). https://doi.org/10.1007/s12209-014-2199-5

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  • DOI: https://doi.org/10.1007/s12209-014-2199-5

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