P. Moilanen*, A. Roiko
A new material testing device, Hybello, was developed to characterize the behavior of material in demanding environments such as pressurized hydrogen atmosphere. The Hybello utilizing pneumatic loading was developed and calibrated to test the fatigue properties of standard sized fatigue test specimen. Quenched and tempered low alloy steel, typically used for pressure vessels, has been tested in 10?13 MPa hydrogen pressure. The Hybello produced new and important material fatigue data, which is required to improve the safety, design, and performance of components used in hydrogen gaseous environments
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