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Simulation of the High Cycle Fatigue Life Reduction due to Internal Hydrogen Embrittlement Using a Commercial Finite Element Program

Bouajila, W. and Riccius, Jörg and Bruchhausen, M. and Fischer, B. (2013) Simulation of the High Cycle Fatigue Life Reduction due to Internal Hydrogen Embrittlement Using a Commercial Finite Element Program. 51st Aerospace Sciences Meeting, 7. –10. Jan. 2013 , Grapevine, Texas, USA.

Full text not available from this repository.

Official URL: http://mc.manuscriptcentral.com/aiaa-masm13

Abstract

The effect of internal hydrogen on the high cycle fatigue (HCF) life duration of Inconel X-750® in the hydrogen concentration range between 5 and 39 wppm at ambient temperature was investigated using an ultrasonic HCF test bench. For an alternating stress equal to 0.6 times the yield stress of the hydrogen-free material, a drop of two orders of magnitude in the high-cycle fatigue durability of the material has been measured over the investigated hydrogen concentration range. New tools have been developed to predict with little efforts the drop in life duration due to internal hydrogen embrittlement and the localization of the fracture area by Finite Element simulations. A simple approach has been considered to rapidly get a first assessment of the drop magnitude in HCF life duration of a structure due to internal hydrogen embrittlement at steady state hydrogen concentration conditions. The core of this proposed Finite Element calculation-based method is the “double Wöhler curve”, i.e. a three-dimensional Wöhler curve with the hydrogen concentration as the third dimension.

Item URL in elib:https://elib.dlr.de/84979/
Document Type:Conference or Workshop Item (Speech)
Title:Simulation of the High Cycle Fatigue Life Reduction due to Internal Hydrogen Embrittlement Using a Commercial Finite Element Program
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bouajila, W.Wissam.Bouajila (at) dlr.deUNSPECIFIED
Riccius, JörgJoerg.Riccius (at) dlr.deUNSPECIFIED
Bruchhausen, M.Europ. Comm..- Joint Research Centre, Petten, NLUNSPECIFIED
Fischer, B.Europ. Comm..- Joint Research Centre, Petten, NLUNSPECIFIED
Date:2013
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:high cycle fatigue, life reduction, Finite Element Program
Event Title:51st Aerospace Sciences Meeting
Event Location:Grapevine, Texas, USA
Event Type:international Conference
Event Dates:7. –10. Jan. 2013
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Antriebsystemtechnik - Schubkammertechnologie
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Rocket Propulsion
Deposited By: Hanke, Michaela
Deposited On:05 Nov 2013 08:47
Last Modified:01 Dec 2018 19:49

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