Fatigue

1 case · 1 image

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Microstructure: Ferritic Detail focus: Plastic Deformation clear all

Fatigue — sub-branches

Vibration Induced Fatigue 1

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Micrography of a section tranverse to the pipe and to the weld between the 8"pipe and the 2" fitting weldolet. The crack starts exactly at the margin of the weld and propagates in the pipe longitudinal direction, in a straight line until it reaches the condition of overloading and through wall final rupture, with strong plastic deformation as can be seen around the crack.

25

ML00149 / Dec.2018

Vibration Induced Fatigue in a Gas Piping

M - Low Carbon SteelP - Piping spoolAp - FPSOCd - Vibration Induced Fatigue

Cm - Nital Etched Micrography by OMDf - Plastic Deformation