NDLI: A Numerical and Experimental Study of the Disk Pressure Test

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Ardon, Kevin Charles, Yann Gaspérini, Monique Furtado, Jader
Copyright Year	2013
Abstract	The Disk Pressure Test is used to select metallic materials for hydrogen storage and transportation and consists of a thin metallic disk bulged out until fracture by applying a gas pressure on its lower face. The ratio of the fracture pressures obtained with a neutral gas and with hydrogen gas defines a phenomenological index for material hydrogen sensitivity. In order to use the Disk Pressure Test for the selection of materials exposed at high pressure (50–70 MPa), a thorough study of this method has been carried out. Experimental investigations of damage mechanisms at different scales and finite element computations of the test have been carried out to exhibit the main features of hydrogen embrittlement in low alloy Fe-Cr-Mo tempered steels during the disk rupture test. Finite Element computations of the test permitted to predict the global response and to understand the effect of boundary conditions and of material behavior on stress gradients and plastic strain distribution throughout the disk. Using hydrogen sensitive cohesive elements to model the global crack path, good agreement with experiment was obtained on the effect of disk thickness and of hydrogen pressure rate on the failure pressure. The relative influence of loading conditions and material behavior on the hydrogen embrittlement during the disk rupture test are discussed.
Sponsorship	Pressure Vessels and Piping Division Nondestructive Evaluation Engineering Division
File Format	PDF
ISBN	9780791855713
DOI	10.1115/PVP2013-97433
Volume Number	Volume 6B: Materials and Fabrication
Conference Proceedings	ASME 2013 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2013-07-14
Publisher Place	Paris, France
Access Restriction	Subscribed
Subject Keyword	Hydrogen storage Hydrogen Rupture Alloys Fracture (materials) Steel Pressure Transportation systems Stress High pressure (physics) Computation Disks Boundary-value problems Finite element analysis Damage Hydrogen embrittlement Failure
Content Type	Text
Resource Type	Article

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