Three-Dimensional Stress State Around Corrosive Cavities on Pressure Vessels

Abdulaliyev Z., Ataoğlu Ş., Bulut O., KAYALI E. S.

JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME, cilt.132, sa.2, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 132 Sayı: 2
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1115/1.4000508
  • Dergi Adı: JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: pressure vessel, corrosive defect, photoelasticity, three-dimensional stress distribution
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

Internal surfaces of pressure vessels used in many industrial sectors are subjected to corrosive effects leading to cavities. In this study, corrosive cavities on investigated pressure vessels are classified according to their shapes and dimensions. Distribution of stress was experimentally investigated around regions of different types of cavities using three-dimensional photoelastic models. An empirical expression is proposed to determine where maximum stress occurs in type of ellipsoidal cavity in the case of uniaxial loading. The obtained results show quite high stress levels around the cavity regions in pressure vessels, which increase the risk of crack formation.