Damage assessment and refurbishment of steam turbine blade/rotor attachment holes
- Submitting institution
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University of Plymouth
- Unit of assessment
- 12 - Engineering
- Output identifier
- 118
- Type
- D - Journal article
- DOI
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10.1016/j.tafmec.2015.11.001
- Title of journal
- Theoretical and Applied Fracture Mechanics
- Article number
- -
- First page
- 125
- Volume
- 83
- Issue
- -
- ISSN
- 0167-8442
- Open access status
- Out of scope for open access requirements
- Month of publication
- -
- Year of publication
- 2015
- URL
-
-
- Supplementary information
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-
- Request cross-referral to
- -
- Output has been delayed by COVID-19
- No
- COVID-19 affected output statement
- -
- Forensic science
- No
- Criminology
- No
- Interdisciplinary
- No
- Number of additional authors
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4
- Research group(s)
-
-
- Proposed double-weighted
- No
- Reserve for an output with double weighting
- No
- Additional information
- Turbine blade and disc failures are the single largest cause of power plant outages and there are strong drivers to develop more cost-effective crack repair procedures. This paper demonstrates the utility of the WeldCore friction hydro-pillar processing platform in providing cost effective repair for finger-pinned blade and disc attachment holes. The novelty in this work is that it links Finite Element stress analysis with a fracture mechanics assessment of residual life for a cracked blade in a 200MW unit and uses neutron diffraction residual stress measurements to show that post-weld heat treatment effectively reduces the magnitude of weld-induced residual stresses.
- Author contribution statement
- -
- Non-English
- No
- English abstract
- -