ISIS Neutron and Muon Source Data Journal

Mapping the elastic strain field around a fatigue crack using Bragg edge mapping

Abstract: The effects of notches on the fatigue life of components have long been investigated and methods a proposed that semi-empirically account for the notch. They are concentrated on estimation of the fatigue limit stress. but the effect of the notches on fatigue crack initiation has been less investigated due to lack of suitable non-destructive tools. Despite the qualitative studies on the size effects on fatigue crack initiation, few quantitative studies can be found in literature since identification of fatigue crack initiation, which often occurs inside notched coupons, has so far been an arduous task. We propose a critical Bragg edge mapping experiment at EnginX to identify the onset of fatigue crack initiation in round notch bars with varying crack lengths. We will complement this work with neutron tomography and digital volume correlation, should IMAT be ready to receive users.

Principal Investigator: Dr Mahmoud Mostafavi
Experimenter: Mr Edward Hares
Experimenter: Mr Andrew James
Experimenter: Mr Philip Earp
Experimenter: Dr Anthony Reid
Experimenter: Dr Aditya Narayanan
Experimenter: Dr Winfried Kockelmann
Experimenter: Professor James Marrow
Experimenter: Dr Harry Coules
Experimenter: Dr Saurabh Kabra

DOI: 10.5286/ISIS.E.RB1620213

ISIS Experiment Number: RB1620213

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Mahmoud Mostafavi et al; (2017): Mapping the elastic strain field around a fatigue crack using Bragg edge mapping , STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1620213

Data is released under the CC-BY-4.0 license.