Failure analysis of an aircraft nose landing gear piston rod end

ASİ O., YEŞİL Ö.

Engineering Failure Analysis, cilt.32, ss.283-291, 2013 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 32
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1016/j.engfailanal.2013.04.011
  • Dergi Adı: Engineering Failure Analysis
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.283-291
  • Anahtar Kelimeler: Aircraft failures, Fatigue, Landing gear, Piston rod end, Stress concentrations
  • Uşak Üniversitesi Adresli: Evet

Özet

A failure investigation has been conducted on a piston rod end used in a hydraulic actuating cylinder of an aircraft landing gear. The failed piston rod end was found to be broken. An evaluation of the failed piston rod end was undertaken to assess its integrity that included a visual examination, photo documentation, chemical analysis, hardness measurement, tensile testing, and metallographic examination. The failure zones were examined with the help of a scanning electron microscope (SEM) equipped with EDX facility. A stress analysis is also carried out by the finite element technique for the determination of highly stressed regions on the piston rod end. The results indicated that the piston rod end failed by fatigue with cracks initiated at the surface close to the mechanically damaged region due to high stress concentrations. © 2013 Elsevier Ltd.