Journal of Failure Analysis and Prevention

, Volume 13, Issue 3, pp 333–339 | Cite as

Failure Investigation of the Wind Turbine Blade Root Bolt

  • Donghuan Liu
  • Xinchun Shang
Technical Article---Peer-Reviewed


The failure analysis of the high-strength bolt at root position of the wind turbine blade was conducted to find the cause of fracture. Detailed investigations using several characterization techniques such as stress calculation, chemical composition test, mechanical property test, metallurgical investigation, and fractography analysis were performed to identify the cause of the bolt failure. Based on the theoretical calculation and failure analysis, it could be concluded that the bolt failed by fatigue accelerated by stress concentration while under low temperature. Practical suggestions were also given to avoid similar failures.


Failure analysis High-strength bolt Wind turbine blade Fractography Stress concentration 



This study was supported by the Fundamental Research Funds for the Central Universities under Grant No. FRF-BR-10-007A and No. FRF-AS-09-001A.


  1. 1.
    Spera, D.A.: Wind Turbine Technology (Fundamental Concepts of Wind Turbine Engineering). ASME Press, New York (1994)Google Scholar
  2. 2.
    de Castro, P.M.S.T., Fernandes, A.A.: Methodologies for failure analysis: a critical survey. Mater. Des. 5(25), 117–123 (2004)CrossRefGoogle Scholar
  3. 3.
    Yu, V.Y., Kohl, J.G., Crapanzano, R.A., Davies, M.W., Elam, A.G., Veach, M.K.: Failure analysis of the M16 rifle bolt. Eng. Fail. Anal. 12, 746–754 (2005)CrossRefGoogle Scholar
  4. 4.
    Asi, O.: Failure of a stud bolt in a ring spinning frame textile machine. Eng. Fail. Anal. 13, 963–970 (2006)CrossRefGoogle Scholar
  5. 5.
    Chen, H.S., Tseng, P.T., Hwang, S.F.: Failure analysis of bolts on an end flange of a steam pipe. Eng. Fail. Anal. 13, 656–668 (2006)CrossRefGoogle Scholar
  6. 6.
    Lacalle, R., Cicero, S., Ferreno, D., Alvarez, J.A.: Failure analysis of a bolt in a scaffolding system. Eng. Fail. Anal. 15, 237–246 (2008)CrossRefGoogle Scholar
  7. 7.
    Huda, Z.: Metallurgical failure analysis for a blade failed in a gas-turbine engine of a power plant. Mater. Des. 30, 3121–3125 (2009)CrossRefGoogle Scholar
  8. 8.
    Khan, A.N., Salam, I.: Failure analysis of ferritic stainless steel locking ring. Mater. Des. 30, 4454–4458 (2009)CrossRefGoogle Scholar
  9. 9.
    Lee, Y.H., Kim, H.K.: Failure analysis of a pressure vessel bolt in a nuclear fuel fretting wear simulator. Eng. Fail. Anal. 18, 1735–1741 (2011)CrossRefGoogle Scholar
  10. 10.
    Krishnaraj, N., Srinivasan, P.B., Muthupandi, V.: Investigation of a mounting bolt failure in an automobile air brake assembly. Fail. Anal. Prev. 3(5), 69–72 (2003)Google Scholar
  11. 11.
    VDI 2230 Part 1: Systematic Calculation of High Duty Bolted Joints: Joints with One Cylindrical Bolt (2003)Google Scholar

Copyright information

© ASM International 2013

Authors and Affiliations

  1. 1.Department of Applied MechanicsUniversity of Science and Technology BeijingBeijingPeople’s Republic of China

Personalised recommendations