ISIS Neutron and Muon Source Data Journal

Evaluation of Residual Strains Induced by 20Hz Laser Shock Processing for 14%Cr Steam Turbine Blade Applications using Bragg Edge Neutron Imaging

Abstract: The research aims to evaluate the subsurface residual stress profile in a full-scale, low pressure steam turbine blade root treated with Laser Shock Processing (LSP). The focus is on validating LSP's effectiveness for lifetime enhancement by examining stress coverage and depth in complex geometries, specifically for 14%Cr FV520B blade material using advanced LSP techniques. Key objectives include determining the 2D residual stress distribution after thick water LSP treatment and assessing how treatment consistency relates to blade geometry. Bragg Edge Neutron Imaging will be employed for comprehensive strain mapping, providing broader and finer resolution data than traditional X-ray, Neutron, or Synchrotron Diffraction methods, thus enabling a more detailed comparison and assessment of the new LSP regime

Principal Investigator: Dr Mark Newby
Experimenter: Professor Claudia Polese
Experimenter: Mr Nicholas Stiekema
Local Contact: Dr Ranggi Ramadhan

DOI: 10.5286/ISIS.E.RB2610473

ISIS Experiment Number: RB2610473

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 Mark Newby et al; (2026): Evaluation of Residual Strains Induced by 20Hz Laser Shock Processing for 14%Cr Steam Turbine Blade Applications using Bragg Edge Neutron Imaging, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2610473

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