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PR335-233813-E01 Hard Spot Manufacturing Anomaly Repair Method Evaluation
Author(s)
Research Contractor
Release Date:
11/13/2025
Number Of Pages
9
Catalog No:
PR335-233813-E01
DOI No:

This addendum to PR335-233813-R01, Prioritization Methodology for Hard Spot Manufacturing Anomalies, evaluates the effectiveness of four repair methods selected by PRCI members in repairing hard spot features. This is completed by performing finite element analysis (FEA) for each repair method and comparing them to an unrepaired hard spot. This analysis compares the tensile hoop stresses within the hard spot which may result in crack formation, as well as the stress intensities after a crack initiates at various lengths.

This addendum to PR335-233813-R01, Prioritization Methodology for Hard Spot Manufacturing Anomalies, evaluates the effectiveness of four repair methods selected by PRCI members in repairing hard spot features. This is completed by performing finite element analysis (FEA) for each repair method and comparing them to an unrepaired hard spot. This analysis compares the tensile hoop stresses within the hard spot which may result in crack formation, as well as the stress intensities after a crack initiates at various lengths.

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Research Category:
Pipeline, repair
Project
Technical Committee
Contracts