2022 Cx Variability Round Robin: Difference between revisions

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Point of Contact(s): Adrian Loghin, Jim Harter
{| class="wikitable" style="width: 50%;"
Objective: xxx
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Inputs
|'''Point of Contact(s):'''  ''TJ Spradlin''
xx
|-
|'''Objective:''' ''Recent discussion within the ERSI Analysis Methods & Testing Committee have identified a need to perform a round-robin exercise focusing on how uncertainty in fatigue response due to the random variability in residual stresses at Cold Expanded (CX) fastener holes can be captured in damage tolerance analysis (DTA). This round-robin seeks to address the following:''
''·        Identify the sensitivity of DTA capabilities to variability in a CX fastener hole treated within specification''


Submissions
''·        Identify the impact of using computational, empirical, or combined residual stress results in DTA''
xx
 
''·        Anonymously compile ERSI community results for the above listed objectives for group comparison-to-test''
 
''·        Derive best-practices guidance from comparisons and in-depth-technical review by the ERSI community''
|-
|
*[https://residualstress.org/images/f/f6/ERSI_-_Analysis_Methods_Subcommittee_-_DTA_for_Variability_in_CX_RS_Round_Robin_-_FINAL.docx ERSI - Analysis Methods Subcommittee - DTA for Variability in CX RS Round Robin.docx]
*[https://residualstress.org/images/d/df/Loghin_2025_validation_and_sensitivity_study_of_3D_FEA_based_solutions_against_two_sets_of_marker_bands_recorded_in_FCG_measurement.pdf AIAA 2025 presentation by Adrian Loghin] and associated [https://residualstress.org/images/d/d1/AdrianLoghinAIAA2025plots.xlsx digitized data in Excel]
|}

Latest revision as of 11:40, 13 March 2025

Point of Contact(s): TJ Spradlin
Objective: Recent discussion within the ERSI Analysis Methods & Testing Committee have identified a need to perform a round-robin exercise focusing on how uncertainty in fatigue response due to the random variability in residual stresses at Cold Expanded (CX) fastener holes can be captured in damage tolerance analysis (DTA). This round-robin seeks to address the following:

·        Identify the sensitivity of DTA capabilities to variability in a CX fastener hole treated within specification

·        Identify the impact of using computational, empirical, or combined residual stress results in DTA

·        Anonymously compile ERSI community results for the above listed objectives for group comparison-to-test

·        Derive best-practices guidance from comparisons and in-depth-technical review by the ERSI community

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