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Fatigue Performance Analysis of Titanium Alloy Welded Joints Based on Rough Set

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Advances in Mechanical Design (ICMD 2017)

Part of the book series: Mechanisms and Machine Science ((Mechan. Machine Science,volume 55))

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Abstract

Fatigue performance analysis of titanium alloy welded joints was conducted based on rough set theory in this work. The rough set model which can be used to analyze fatigue performance of titanium alloy welded joints was established through the steps of data acquisition, data preprocessing, model reduction and model reasoning. Experiment was done on the basis of the fatigue samples of the titanium alloy welded joints getting through the laboratory test to establish the rough set model. At the same time, results of fatigue performance analysis of titanium alloy welded joints by using different methods, namely, nominal stress method, structural stress method and equivalent structural stress method were compared based on the established rough set model. Results of the comparison and analysis show that the influence of such factors as material type and load type to the fatigue life of the welded joints computed by using equivalent structural stress method is less than what was computed by using nominal stress method or structural stress method. The rough set modeling method extends the application field of rough set theory as well as provides a new way for the fatigue performance and stress analysis of titanium alloy welded joints thus shows a great application potential.

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Acknowledgements

This project is supported by Natural Science Foundation of Liaoning Province (2015020169), the Dalian high level talent innovation support plan (2016RQ053).

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Authors and Affiliations

  1. Software Institute, Dalian Jiaotong University, Lvshun, 116052, China

    Li Zou

  2. School of Materials Science and Engineering, Dalian Jiaotong University, Dalian, 116028, China

    Xinhua Yang

  3. School of Traffic and Transportation Engineering, Dalian Jiaotong University, Dalian, 116028, China

    Xiaozhen Mi & Yibo Sun

Authors
  1. Li Zou
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  2. Xinhua Yang
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  3. Xiaozhen Mi
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  4. Yibo Sun
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Corresponding author

Correspondence to Xinhua Yang .

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Editors and Affiliations

  1. Zhejiang University, Hangzhou, China

    Jianrong Tan

  2. Shanghai Jiao Tong University , Shanghai, China

    Feng Gao

  3. Beijing Institution of Technology, Beijing, China

    Changle Xiang

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Zou, L., Yang, X., Mi, X., Sun, Y. (2018). Fatigue Performance Analysis of Titanium Alloy Welded Joints Based on Rough Set. In: Tan, J., Gao, F., Xiang, C. (eds) Advances in Mechanical Design. ICMD 2017. Mechanisms and Machine Science, vol 55. Springer, Singapore. https://doi.org/10.1007/978-981-10-6553-8_98

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  • DOI: https://doi.org/10.1007/978-981-10-6553-8_98

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-10-6552-1

  • Online ISBN: 978-981-10-6553-8

  • eBook Packages: EngineeringEngineering (R0)

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