ISIS Neutron and Muon Source Data Journal

Evaluation of Residual Strains Produced by Laser Shock Processing for Low Pressure Steam Turbine Blade Applications using Bragg Edge Neutron

Abstract: The use of steam turbines is the primary method of power extraction for most power plants. The corrosion resistant steel blades bear significant centrifugal loads in a wet steam environment making them susceptible to stress corrosion cracking and fatigue. A surface technique known as Laser Shock Peening (LSP) can be used to generate beneficial Compressive Residual Stresses (CRS) at the highly stressed blade root in order to resist crack initiation. Achieving a consistent stress field around a complex component such as a low pressure steam turbine blade, therefore requires significant insight into the geometric effects on LSP processing. Conventional residual stress measurements can be hindered by the geometry and are specific to that location. The full field strain neutron imaging at IMAT offers the ideal technique to reveal the effectiveness of the LSP process around complex geometries.

Principal Investigator: Professor Michael Fitzpatrick
Experimenter: Professor Claudia Polese
Experimenter: Dr Daniel Glaser
Experimenter: Dr Ranggi Ramadhan
Experimenter: Dr Mark Newby
Experimenter: Mr Mitchell Leering
Local Contact: Dr Winfried Kockelmann

DOI: 10.5286/ISIS.E.RB1910292

ISIS Experiment Number: RB1910292

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
Select the data format above to find out more about it.

Data Citation

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

For Example:
Professor Michael Fitzpatrick et al; (2019): Evaluation of Residual Strains Produced by Laser Shock Processing for Low Pressure Steam Turbine Blade Applications using Bragg Edge Neutron, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1910292

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