Fatigue crack growth of filament wound GRP pipes with a surface crack under cyclic internal pressure

Küçük Resim Yok

Tarih

2008

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

SPRINGER

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

In this study, fatigue damage behavior of (+/-75(3)) filament wound composite pipes with a surface crack under alternating internal pressure was investigated. The specimens were tested at room temperature and exposed to open ended fatigue tests in which the pipe can be deformed freely in the axial direction. The tests were carried out in accordance with the ASTMD-2992 standard. The alternating internal pressure was generated by conventional hydraulic oil. The low cycle tests were performed with 0.42 Hz frequency and R = 0.05 stress ratio. Glass reinforced polymer pipes (GRP) are made of E-glass/epoxy and have (+/-75(3)) configuration. Surface cracks were machined in the axial direction of the pipes which have depth-to-thickness ratios a/t = 0.25-0.38-0.50 and depth to length ratio of a/c = 0.2. Tests were performed at three different loads of 50%, 40%, and 30% of ultimate hoop stress strength of unnotched pipes. The failure behavior of GRP pipes during the test was observed and fatigue test results were presented by means of (S-N) Curves and delamination damage zone area-cycle (A-N) curves.

Açıklama

Anahtar Kelimeler

Kaynak

JOURNAL OF MATERIALS SCIENCE

WoS Q Değeri

Q2

Scopus Q Değeri

Q1

Cilt

43

Sayı

16

Künye