Vibration based fatigue analysis of a structure integrated on an air vehicle by using experimental and theoretical methods

Akbaba O. M., YILDIRIM B., Canbaloglu G.

RESULTS IN ENGINEERING, vol.15, 2022 (ESCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 15
  • Publication Date: 2022
  • Doi Number: 10.1016/j.rineng.2022.100549
  • Journal Name: RESULTS IN ENGINEERING
  • Journal Indexes: Emerging Sources Citation Index (ESCI), Scopus
  • Keywords: Finite element model verification, Vibration based fatigue, Accelerated life testing, SPECTRAL METHODS, PREDICTION
  • Hacettepe University Affiliated: Yes

Abstract

In this article, fatigue life analyses and tests of a real engineering structure integrated into an air vehicle are performed using frequency domain fatigue approaches and accelerated fatigue life testing concept. The finite element (FE) model of the structure is constructed and verified by experiments. The stress history is obtained using the verified FE model and synthesized operational vibration data. Numerical fatigue calculations are carried out with the developed code and commercial fatigue software. Lastly, the experimental fatigue life of the structure is obtained under accelerated vibration data. The results show considerably good agreement between the numerical analyses and experiments.