In situ observation of short fatigue crack propagation in oxygenated water at elevated temperature and pressure

A new method is demonstrated for in situ measurement of short crack propagation rates during a corrosion fatigue test of an austenitic stainless steel within a windowed autoclave at 250 degrees C, 50 atmospheres, oxygenated water. Digital image correlation is used to monitor crack growth through mea...

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Detalles Bibliográficos
Main Authors: Duff, J, Marrow, T
Formato: Journal article
Idioma:English
Publicado: Elsevier 2013
Descripción
Summary:A new method is demonstrated for in situ measurement of short crack propagation rates during a corrosion fatigue test of an austenitic stainless steel within a windowed autoclave at 250 degrees C, 50 atmospheres, oxygenated water. Digital image correlation is used to monitor crack growth through measurement of the opening displacements of defects; either focused ion beam (FIB) milled notches from which fatigue cracks initiated, or stress corrosion cracks that subsequently propagated by fatigue. Copyright 2012 Elsevier Ltd.