Engineered Residual Stress Implementation (ERSI) - User contributions [en]

2025 A10 CX Dataset and Round Robin

2026-07-21T05:04:02Z

KFWalker:

{| class="wikitable" style="width: 50%;"
|-
|'''Point of Contact:''' Bob Pilarczyk
|-
|'''Description:''' •The A-10 program is transitioning toward using residual stresses from cold expansion directly in damage tolerance analyses. A test program was developed to target and isolate the load history and residual stress effects for Cx holes. Fatigue tests include baseline non-Cx and Cx holes, constant amplitude and spectrum loading, and are complimented with residual stress measurements for each condition.
|-
|'''Data that is made available:'''
*https://residualstress.org/images/b/bd/A-10_Cx_Dataset_-_ERSI_Blind_Predictions_r2vf.pptx
*https://residualstress.org/images/a/a7/A-10_Cx_Dataset_-_ERSI_Blind_Predictions_Phase_II_r0vf.pptx
*
|}

2025 A10 CX Dataset and Round Robin

2026-07-21T05:02:39Z

KFWalker: Added details of the RR itself and Phase II update

File:A-10 Cx Dataset - ERSI Blind Predictions Phase II r0vf.pptx

2026-07-21T04:59:59Z

KFWalker:

2025 A10 CX Dataset and Round Robin

2026-07-21T04:59:22Z

KFWalker:

2025 A10 CX Dataset and Round Robin

2026-07-21T04:57:36Z

KFWalker:

2025 A10 CX Dataset and Round Robin

2026-07-21T04:55:05Z

KFWalker:

{| class="wikitable" style="width: 50%;"
|-
|'''Point of Contact:''' Bob Pilarczyk
|-
|'''Description:''' •The A-10 program is transitioning toward using residual stresses from cold expansion directly in damage tolerance analyses. A test program was developed to target and isolate the load history and residual stress effects for Cx holes. Fatigue tests include baseline non-Cx and Cx holes, constant amplitude and spectrum loading, and are complimented with residual stress measurements for each condition.
|-
|'''Data that is made available:'''
*
*[https://residualstress.org/images/0/0e/7075T6_SpikeOverload_Boeing_IRAD_Test.xlsx 7075-T6 Spike Overload Test]
|}

2025 A10 CX Dataset and Round Robin

2026-07-21T04:49:40Z

KFWalker:

{| class="wikitable" style="width: 50%;"
|-
|'''Point of Contact:''' Bob Pilarczyk
|-
|'''Description:''' •The A-10 program is transitioning toward using residual stresses from cold expansion directly in damage tolerance analyses. A test program was developed to target and isolate the load history and residual stress effects for Cx holes. Fatigue tests include baseline non-Cx and Cx holes, constant amplitude and spectrum loading, and are complimented with residual stress measurements for each condition.
|-
|'''Data that is made available:'''
*[https://residualstress.org/images/0/0e/7075T6_SpikeOverload_Boeing_IRAD_Test.xlsx 7075-T6 Spike Overload Test]
|}

2025 A10 CX Dataset and Round Robin

2026-07-21T04:48:05Z

KFWalker: Blanked the page

2025 A10 CX Dataset and Round Robin

2026-07-21T04:47:17Z

KFWalker:

{| class="wikitable" style="width: 50%;"
|-
|'''Point of Contact(s):''' Bob Pilarczyk
|-
|'''Objective:''' The A-10 program is transitioning toward using residual stresses from cold expansion directly in damage tolerance analyses. A test program was developed to target and isolate the load history and residual stress effects for Cx holes. Fatigue tests include baseline non-Cx and Cx holes, constant amplitude and spectrum loading, and are complimented with residual stress measurements for each condition.
|}|-
|'''Data that is made available:'''
|}

2025 A10 CX Dataset and Round Robin

2026-07-21T04:43:47Z

KFWalker:

2025 A10 CX Dataset and Round Robin

2026-07-21T04:43:07Z

KFWalker:

2025 A10 CX Dataset and Round Robin

2026-07-21T04:40:00Z

KFWalker:

Analysis & Test

2026-07-21T04:33:04Z

KFWalker: Now complete - not "in work".

Welcome to the ERSI Analysis & Test Committee website.

A list of the current and previous round robin activities are listed below, which will link to the corresponding site with all the associated files available for download.

* '''[[2025 A10 CX Dataset and Round Robin]]
* [[2023 Boeing IRAD Testing|'''2023 Boeing IRAD Testing''']]
* '''[[2023 Validation of Fatigue Crack Growth Modeling Solutions using Measurements Collected on API X65 Piping Specimens]]'''
* '''[[2022 Interference Fit Fastener Round Robin]] ''(in-work)'''''
* '''[[2022 Walker-Newman IRAD|2022 Walker/Newman IRAD]]'''
* '''[[2022 Cx Variability Round Robin]]'''
* '''[[2022 Boeing Spectrum Challenge]]'''
* '''[[2021 Stress Intensity Factor Round Robin]]'''
* '''[[2021 AFGROW Workshop Round Robin]]'''
* '''[[2019 DST Assist Wide Plate Spectrum Challenge]]'''
* '''[[2019 Interference Fit Fastener Round Robin]]'''
* '''[[2017 Cx Round Robin]]'''
* '''[[2017 AFGROW Workshop Round Robin]]'''

Members of the Analysis & Test Committee have organized crack growth rate data from the AFGROW Material Database (AFMAT) for 5 aluminum alloys in lab air (LA), dry air (DA), and low humidity air (LHA) conditions. Those data are available for download using the links below.

* [https://residualstress.org/images/6/69/AFMAT_AA2024T3.xlsx 2024-T3, -T351]
* [https://residualstress.org/images/7/75/AFMAT_AA2024T3511.xlsx 2024-T3511]
* [https://residualstress.org/images/2/23/AFMAT_AA7075T6.xlsx 7075-T6, -T651]
* [https://residualstress.org/images/9/9c/AFMAT_AA7075T73.xlsx 7075-T73]
* [https://residualstress.org/images/d/d7/AFMAT_AA7175T74.xlsx 7175-T74]

A Cx-related literature review summary has been compiled and can be accessed here: [https://residualstress.org/images/f/f6/Cx_Hole_Literature_Combined.xlsx Cx Literature Review Summary]

The Analysis & Test Committee has also formed sub-groups within the committee to address specific focus areas, which can be found here: [[Sub-groups]]

2025 A10 CX Dataset and Round Robin

2026-07-14T07:28:12Z

KFWalker: Blanked the page

2025 A10 CX Dataset and Round Robin

2026-07-14T07:27:24Z

KFWalker:

{| class="wikitable" style="width: 50%;"
|-
|'''Point of Contact:''' ''Moises Ocasio''
|-
|'''Description:''' A spike overload test was conducted on 7075-T6 to improve the understanding of crack growth rate constraint-loss behavior as a function of thickness and finite width effects.
|-
|'''Data that is made available:'''
*[https://residualstress.org/images/0/0e/7075T6_SpikeOverload_Boeing_IRAD_Test.xlsx 7075-T6 Spike Overload Test]
|}

{| class="wikitable" style="width: 50%;"
|-
|'''Point of Contact:''' ''Moises Ocasio''
|-
|'''Description:''' A hole shakedown test was conducted on Ti-6l-4V LS to validate methods and best practices used to handle local yielding at holes due to extreme loads.
|-
|'''Data that is made available:'''
*[https://residualstress.org/images/d/de/Ti64_Boeing_IRAD_Shakedown_Test.xlsx Ti-6Al-4V Hole Shakedown Test]
|}

{| class="wikitable" style="width: 50%;"
|-
|'''Point of Contact:''' ''Moises Ocasio''
|-
|'''Description:''' A hole shakedown test was conducted on Ph13-8Mo LS to validate methods and best practices used to handle local yielding at holes due to extreme loads.
|-
|'''Data that is made available:'''
*[https://residualstress.org/images/d/de/Ph13-8Mo_Boeing_IRAD_Shakedown_Test.xlsx Ph13-8Mo Hole Shakedown Test]
|}

2025 A10 CX Dataset and Round Robin

2026-07-14T07:21:39Z

KFWalker: Created page with "This Round Robin blah blah"

This Round Robin blah blah

Analysis & Test

2026-07-14T07:20:26Z

KFWalker:

Welcome to the ERSI Analysis & Test Committee website.

A list of the current and previous round robin activities are listed below, which will link to the corresponding site with all the associated files available for download.

* '''[[2025 A10 CX Dataset and Round Robin]]
* [[2023 Boeing IRAD Testing|'''2023 Boeing IRAD Testing''']]
* '''[[2023 Validation of Fatigue Crack Growth Modeling Solutions using Measurements Collected on API X65 Piping Specimens]]'''
* '''[[2022 Interference Fit Fastener Round Robin]] ''(in-work)'''''
* '''[[2022 Walker-Newman IRAD|2022 Walker/Newman IRAD]] ''(in-work)'''''
* '''[[2022 Cx Variability Round Robin]]'''
* '''[[2022 Boeing Spectrum Challenge]]'''
* '''[[2021 Stress Intensity Factor Round Robin]]'''
* '''[[2021 AFGROW Workshop Round Robin]]'''
* '''[[2019 DST Assist Wide Plate Spectrum Challenge]]'''
* '''[[2019 Interference Fit Fastener Round Robin]]'''
* '''[[2017 Cx Round Robin]]'''
* '''[[2017 AFGROW Workshop Round Robin]]'''

Members of the Analysis & Test Committee have organized crack growth rate data from the AFGROW Material Database (AFMAT) for 5 aluminum alloys in lab air (LA), dry air (DA), and low humidity air (LHA) conditions. Those data are available for download using the links below.

* [https://residualstress.org/images/6/69/AFMAT_AA2024T3.xlsx 2024-T3, -T351]
* [https://residualstress.org/images/7/75/AFMAT_AA2024T3511.xlsx 2024-T3511]
* [https://residualstress.org/images/2/23/AFMAT_AA7075T6.xlsx 7075-T6, -T651]
* [https://residualstress.org/images/9/9c/AFMAT_AA7075T73.xlsx 7075-T73]
* [https://residualstress.org/images/d/d7/AFMAT_AA7175T74.xlsx 7175-T74]

A Cx-related literature review summary has been compiled and can be accessed here: [https://residualstress.org/images/f/f6/Cx_Hole_Literature_Combined.xlsx Cx Literature Review Summary]

The Analysis & Test Committee has also formed sub-groups within the committee to address specific focus areas, which can be found here: [[Sub-groups]]

2022 Walker-Newman IRAD

2026-07-14T07:07:37Z

KFWalker: Updated MPC Paper from 2023

{| class="wikitable" style="width: 50%;"
|-
|'''Point of Contact:''' ''Kevin Walker''
|-
|'''Objective:''' IRAD stands for "Internal Research and Development" which is a mechanism used by QinetiQ to fund research projects. In this case, we have completed a major project including testing and analytical model development. The project aim was to account for an observed behaviour for modelling of fatigue crack growth where the analysis results consistently under predict the test life. This was evident in the DST ASSIST Challenge presented at the ASIP Conference in 2020. The project here considered three materials; 2024-T3, 7075-T6 and 7075-T7351. Testing was performed on Middle Tension (M(T)) specimens under conditions of Constant Amplitude loading in the constraint-loss regime, with and without spike overloads, and also under representative spectrum loading. The project scope is detailed in the document below:

* [https://residualstress.org/images/0/0d/FTA_IRAD_Stage_2_SOW_-_no%24.pdf Statement of Work for the IRAD Project related to the 2024-T3 and 7075-T6 materials]
|-
|'''Results'''
*[https://residualstress.org/images/9/94/ASTM1MPC202300741en-US.pdf MPC Paper]
*[https://residualstress.org/images/4/41/Newman_Walker_ASIP_2022.pdf ASIP 2022 Presentation]
*[https://residualstress.org/images/c/ca/ICAF2023-Paper-Newman-Walker-final.pdf ICAF 2023 Paper]
*[https://residualstress.org/images/2/2f/Newman-Walker-ICAF2023.pdf Newman Walker 2023 ICAF Presentation]
*[https://residualstress.org/images/e/e3/Walker_etal_IJF_2024.pdf Walker etal IJF 2025]
*[https://residualstress.org/images/1/16/Newman_Walker_EFM_2025_Final.pdf Newman Walker EFM 2025]
|}

File:ASTM1MPC202300741en-US.pdf

2026-07-14T07:02:48Z

KFWalker:

Analysis & Test

2026-07-14T06:57:26Z

KFWalker: Adding a new RR

Welcome to the ERSI Analysis & Test Committee website.

A list of the current and previous round robin activities are listed below, which will link to the corresponding site with all the associated files available for download.

* 2025 A10 CX Dataset and Round Robin
* [[2023 Boeing IRAD Testing|'''2023 Boeing IRAD Testing''']]
* '''[[2023 Validation of Fatigue Crack Growth Modeling Solutions using Measurements Collected on API X65 Piping Specimens]]'''
* '''[[2022 Interference Fit Fastener Round Robin]] ''(in-work)'''''
* '''[[2022 Walker-Newman IRAD|2022 Walker/Newman IRAD]] ''(in-work)'''''
* '''[[2022 Cx Variability Round Robin]]'''
* '''[[2022 Boeing Spectrum Challenge]]'''
* '''[[2021 Stress Intensity Factor Round Robin]]'''
* '''[[2021 AFGROW Workshop Round Robin]]'''
* '''[[2019 DST Assist Wide Plate Spectrum Challenge]]'''
* '''[[2019 Interference Fit Fastener Round Robin]]'''
* '''[[2017 Cx Round Robin]]'''
* '''[[2017 AFGROW Workshop Round Robin]]'''

Members of the Analysis & Test Committee have organized crack growth rate data from the AFGROW Material Database (AFMAT) for 5 aluminum alloys in lab air (LA), dry air (DA), and low humidity air (LHA) conditions. Those data are available for download using the links below.

* [https://residualstress.org/images/6/69/AFMAT_AA2024T3.xlsx 2024-T3, -T351]
* [https://residualstress.org/images/7/75/AFMAT_AA2024T3511.xlsx 2024-T3511]
* [https://residualstress.org/images/2/23/AFMAT_AA7075T6.xlsx 7075-T6, -T651]
* [https://residualstress.org/images/9/9c/AFMAT_AA7075T73.xlsx 7075-T73]
* [https://residualstress.org/images/d/d7/AFMAT_AA7175T74.xlsx 7175-T74]

A Cx-related literature review summary has been compiled and can be accessed here: [https://residualstress.org/images/f/f6/Cx_Hole_Literature_Combined.xlsx Cx Literature Review Summary]

The Analysis & Test Committee has also formed sub-groups within the committee to address specific focus areas, which can be found here: [[Sub-groups]]

Analysis & Test

2026-07-14T06:53:58Z

KFWalker: Deleting an earlier error for adding a new Round Robin

Welcome to the ERSI Analysis & Test Committee website.

A list of the current and previous round robin activities are listed below, which will link to the corresponding site with all the associated files available for download.

* [[2023 Boeing IRAD Testing|'''2023 Boeing IRAD Testing''']]
* '''[[2023 Validation of Fatigue Crack Growth Modeling Solutions using Measurements Collected on API X65 Piping Specimens]]'''
* '''[[2022 Interference Fit Fastener Round Robin]] ''(in-work)'''''
* '''[[2022 Walker-Newman IRAD|2022 Walker/Newman IRAD]] ''(in-work)'''''
* '''[[2022 Cx Variability Round Robin]]'''
* '''[[2022 Boeing Spectrum Challenge]]'''
* '''[[2021 Stress Intensity Factor Round Robin]]'''
* '''[[2021 AFGROW Workshop Round Robin]]'''
* '''[[2019 DST Assist Wide Plate Spectrum Challenge]]'''
* '''[[2019 Interference Fit Fastener Round Robin]]'''
* '''[[2017 Cx Round Robin]]'''
* '''[[2017 AFGROW Workshop Round Robin]]'''

Members of the Analysis & Test Committee have organized crack growth rate data from the AFGROW Material Database (AFMAT) for 5 aluminum alloys in lab air (LA), dry air (DA), and low humidity air (LHA) conditions. Those data are available for download using the links below.

* [https://residualstress.org/images/6/69/AFMAT_AA2024T3.xlsx 2024-T3, -T351]
* [https://residualstress.org/images/7/75/AFMAT_AA2024T3511.xlsx 2024-T3511]
* [https://residualstress.org/images/2/23/AFMAT_AA7075T6.xlsx 7075-T6, -T651]
* [https://residualstress.org/images/9/9c/AFMAT_AA7075T73.xlsx 7075-T73]
* [https://residualstress.org/images/d/d7/AFMAT_AA7175T74.xlsx 7175-T74]

A Cx-related literature review summary has been compiled and can be accessed here: [https://residualstress.org/images/f/f6/Cx_Hole_Literature_Combined.xlsx Cx Literature Review Summary]

The Analysis & Test Committee has also formed sub-groups within the committee to address specific focus areas, which can be found here: [[Sub-groups]]

2022 Walker-Newman IRAD

2026-05-07T06:10:47Z

KFWalker: Added a publication

{| class="wikitable" style="width: 50%;"
|-
|'''Point of Contact:''' ''Kevin Walker''
|-
|'''Objective:''' IRAD stands for "Internal Research and Development" which is a mechanism used by QinetiQ to fund research projects. In this case, we have completed a major project including testing and analytical model development. The project aim was to account for an observed behaviour for modelling of fatigue crack growth where the analysis results consistently under predict the test life. This was evident in the DST ASSIST Challenge presented at the ASIP Conference in 2020. The project here considered three materials; 2024-T3, 7075-T6 and 7075-T7351. Testing was performed on Middle Tension (M(T)) specimens under conditions of Constant Amplitude loading in the constraint-loss regime, with and without spike overloads, and also under representative spectrum loading. The project scope is detailed in the document below:

* [https://residualstress.org/images/0/0d/FTA_IRAD_Stage_2_SOW_-_no%24.pdf Statement of Work for the IRAD Project related to the 2024-T3 and 7075-T6 materials]
|-
|'''Results'''
*[https://residualstress.org/images/e/e0/MPC-2023-0074.R1_Proof_hi.pdf MPC Paper]
*[https://residualstress.org/images/4/41/Newman_Walker_ASIP_2022.pdf ASIP 2022 Presentation]
*[https://residualstress.org/images/c/ca/ICAF2023-Paper-Newman-Walker-final.pdf ICAF 2023 Paper]
*[https://residualstress.org/images/2/2f/Newman-Walker-ICAF2023.pdf Newman Walker 2023 ICAF Presentation]
*[https://residualstress.org/images/e/e3/Walker_etal_IJF_2024.pdf Walker etal IJF 2025]
*[https://residualstress.org/images/1/16/Newman_Walker_EFM_2025_Final.pdf Newman Walker EFM 2025]
|}

File:Newman Walker EFM 2025 Final.pdf

2026-05-07T06:09:54Z

KFWalker:

2022 Walker-Newman IRAD

2026-05-07T06:08:25Z

KFWalker: Added a publication

{| class="wikitable" style="width: 50%;"
|-
|'''Point of Contact:''' ''Kevin Walker''
|-
|'''Objective:''' IRAD stands for "Internal Research and Development" which is a mechanism used by QinetiQ to fund research projects. In this case, we have completed a major project including testing and analytical model development. The project aim was to account for an observed behaviour for modelling of fatigue crack growth where the analysis results consistently under predict the test life. This was evident in the DST ASSIST Challenge presented at the ASIP Conference in 2020. The project here considered three materials; 2024-T3, 7075-T6 and 7075-T7351. Testing was performed on Middle Tension (M(T)) specimens under conditions of Constant Amplitude loading in the constraint-loss regime, with and without spike overloads, and also under representative spectrum loading. The project scope is detailed in the document below:

* [https://residualstress.org/images/0/0d/FTA_IRAD_Stage_2_SOW_-_no%24.pdf Statement of Work for the IRAD Project related to the 2024-T3 and 7075-T6 materials]
|-
|'''Results'''
*[https://residualstress.org/images/e/e0/MPC-2023-0074.R1_Proof_hi.pdf MPC Paper]
*[https://residualstress.org/images/4/41/Newman_Walker_ASIP_2022.pdf ASIP 2022 Presentation]
*[https://residualstress.org/images/c/ca/ICAF2023-Paper-Newman-Walker-final.pdf ICAF 2023 Paper]
*[https://residualstress.org/images/2/2f/Newman-Walker-ICAF2023.pdf Newman Walker 2023 ICAF Presentation]
*[https://residualstress.org/images/e/e3/Walker_etal_IJF_2024.pdf Walker etal IJF 2025]
|}

2022 Walker-Newman IRAD

2026-05-07T06:05:59Z

KFWalker: Added a results publication

{| class="wikitable" style="width: 50%;"
|-
|'''Point of Contact:''' ''Kevin Walker''
|-
|'''Objective:''' IRAD stands for "Internal Research and Development" which is a mechanism used by QinetiQ to fund research projects. In this case, we have completed a major project including testing and analytical model development. The project aim was to account for an observed behaviour for modelling of fatigue crack growth where the analysis results consistently under predict the test life. This was evident in the DST ASSIST Challenge presented at the ASIP Conference in 2020. The project here considered three materials; 2024-T3, 7075-T6 and 7075-T7351. Testing was performed on Middle Tension (M(T)) specimens under conditions of Constant Amplitude loading in the constraint-loss regime, with and without spike overloads, and also under representative spectrum loading. The project scope is detailed in the document below:

* [https://residualstress.org/images/0/0d/FTA_IRAD_Stage_2_SOW_-_no%24.pdf Statement of Work for the IRAD Project related to the 2024-T3 and 7075-T6 materials]
|-
|'''Results'''
*[https://residualstress.org/images/e/e0/MPC-2023-0074.R1_Proof_hi.pdf MPC Paper]
*[https://residualstress.org/images/4/41/Newman_Walker_ASIP_2022.pdf ASIP 2022 Presentation]
*[https://residualstress.org/images/c/ca/ICAF2023-Paper-Newman-Walker-final.pdf ICAF 2023 Paper]
*[https://residualstress.org/images/2/2f/Newman-Walker-ICAF2023.pdf Newman Walker 2023 ICAF Presentation]
*[[Walker etal IJF 2025]]
|}

File:Walker etal IJF 2024.pdf

2026-05-07T06:04:44Z

KFWalker:

Analysis & Test

2026-05-07T05:39:35Z

KFWalker: Added information about 2025 A-10 Cx Dataset

Welcome to the ERSI Analysis & Test Committee website.

A list of the current and previous round robin activities are listed below, which will link to the corresponding site with all the associated files available for download.

* 2025 A-10 Cx [https://residualstress.org/images/b/bd/A-10_Cx_Dataset_-_ERSI_Blind_Predictions_r2vf.pptx Dataset]
* [[2023 Boeing IRAD Testing|'''2023 Boeing IRAD Testing''']]
* '''[[2023 Validation of Fatigue Crack Growth Modeling Solutions using Measurements Collected on API X65 Piping Specimens]]'''
* '''[[2022 Interference Fit Fastener Round Robin]] ''(in-work)'''''
* '''[[2022 Walker-Newman IRAD|2022 Walker/Newman IRAD]] ''(in-work)'''''
* '''[[2022 Cx Variability Round Robin]]'''
* '''[[2022 Boeing Spectrum Challenge]]'''
* '''[[2021 Stress Intensity Factor Round Robin]]'''
* '''[[2021 AFGROW Workshop Round Robin]]'''
* '''[[2019 DST Assist Wide Plate Spectrum Challenge]]'''
* '''[[2019 Interference Fit Fastener Round Robin]]'''
* '''[[2017 Cx Round Robin]]'''
* '''[[2017 AFGROW Workshop Round Robin]]'''

Members of the Analysis & Test Committee have organized crack growth rate data from the AFGROW Material Database (AFMAT) for 5 aluminum alloys in lab air (LA), dry air (DA), and low humidity air (LHA) conditions. Those data are available for download using the links below.

* [https://residualstress.org/images/6/69/AFMAT_AA2024T3.xlsx 2024-T3, -T351]
* [https://residualstress.org/images/7/75/AFMAT_AA2024T3511.xlsx 2024-T3511]
* [https://residualstress.org/images/2/23/AFMAT_AA7075T6.xlsx 7075-T6, -T651]
* [https://residualstress.org/images/9/9c/AFMAT_AA7075T73.xlsx 7075-T73]
* [https://residualstress.org/images/d/d7/AFMAT_AA7175T74.xlsx 7175-T74]

A Cx-related literature review summary has been compiled and can be accessed here: [https://residualstress.org/images/f/f6/Cx_Hole_Literature_Combined.xlsx Cx Literature Review Summary]

The Analysis & Test Committee has also formed sub-groups within the committee to address specific focus areas, which can be found here: [[Sub-groups]]

File:A-10 Cx Dataset - ERSI Blind Predictions r2vf.pptx

2026-05-07T05:36:58Z

KFWalker:

Analysis & Test

2023-12-19T23:54:38Z

KFWalker:

Welcome to the ERSI Analysis & Test committee website. A list of the current and previous round robin activities are listed below, which will link to the corresponding site with all the associated files available for download.

* '''[[2023 Validation of Fatigue Crack Growth Modeling Solutions using Measurements Collected on API X65 Piping Specimens]]'''
* '''[[2022 Interference Fit Fastener Round Robin]] ''(in-work)'''''
* '''[[2022 Walker-Newman IRAD|2022 Walker/Newman IRAD]] ''(in-work)'''''
* '''[[2022 Cx Variability Round Robin]]'''
* '''[[2022 Boeing Spectrum Challenge]]'''
* '''[[2021 Stress Intensity Factor Round Robin]]'''
* '''[[2021 AFGROW Workshop Round Robin]]'''
* '''[[2019 DST Assist Wide Plate Spectrum Challenge]]'''
* '''[[2019 Interference Fit Fastener Round Robin]]'''
* '''[[2017 Cx Round Robin]]'''
* '''[[2017 AFGROW Workshop Round Robin]]'''
* [[Sub-groups]]

Analysis & Test

2023-12-19T23:53:59Z

KFWalker:

Sub-groups

2023-12-19T23:53:11Z

KFWalker: Created page with "This is a page for the sub-groups!!"

This is a page for the sub-groups!!

2022 Walker-Newman IRAD

2023-12-19T23:45:13Z

KFWalker:

{| class="wikitable" style="width: 50%;"
|-
|'''''Point of Contact(s):''' Kevin Walker''
|-
|[[File:RMIT IRAD Stage 2 SOW - no$.pdf|thumb|7075-T7351 work]]'''''Objective:''' IRAD stands for "Internal Research and Development" which is a mechanism used by QinetiQ to fund research projects. In this case, we have completed a major project including testing and analytical model development. The project aim was to account for an observed behaviour for modelling of fatigue crack growth where the analysis results consistently under predict the test life. This was evident in the DST ASSIST Challenge presented at the ASIP Conference in 2020. The project here considered three materials; 2024-T3, 7075-T6 and 7075-T7351. Testing was performed on Middle Tension (M(T)) specimens under conditions of Constant Amplitude loading in the constraint-loss regime, with and without spike overloads, and also under representative spectrum loading. The project scope is detailed in the attached documents.''[[File:FTA IRAD Stage 2 SOW - no$.pdf|thumb|2024-T3 and 7075-T6 IRAD]]
|-
|Results/outputs

*
*
*
* [[File:MPC-2023-0074.R1 Proof hi.pdf|thumb]][[File:Newman Walker ASIP 2022.pdf|thumb]][[File:ICAF2023-Paper-Newman-Walker-final.pdf|thumb]][[File:Newman-Walker-ICAF2023.pdf|thumb]]
|}

File:MPC-2023-0074.R1 Proof hi.pdf

2023-12-19T23:44:51Z

KFWalker:

MPC Paper

2022 Walker-Newman IRAD

2023-12-19T23:42:40Z

KFWalker:

{| class="wikitable" style="width: 50%;"
|-
|'''''Point of Contact(s):''' Kevin Walker''
|-
|[[File:RMIT IRAD Stage 2 SOW - no$.pdf|thumb|7075-T7351 work]]'''''Objective:''' IRAD stands for "Internal Research and Development" which is a mechanism used by QinetiQ to fund research projects. In this case, we have completed a major project including testing and analytical model development. The project aim was to account for an observed behaviour for modelling of fatigue crack growth where the analysis results consistently under predict the test life. This was evident in the DST ASSIST Challenge presented at the ASIP Conference in 2020. The project here considered three materials; 2024-T3, 7075-T6 and 7075-T7351. Testing was performed on Middle Tension (M(T)) specimens under conditions of Constant Amplitude loading in the constraint-loss regime, with and without spike overloads, and also under representative spectrum loading. The project scope is detailed in the attached documents.''[[File:FTA IRAD Stage 2 SOW - no$.pdf|thumb|2024-T3 and 7075-T6 IRAD]]
|-
|Results/outputs

*
*
* [[File:Newman Walker ASIP 2022.pdf|thumb]][[File:ICAF2023-Paper-Newman-Walker-final.pdf|thumb]][[File:Newman-Walker-ICAF2023.pdf|thumb]]
|}

2022 Walker-Newman IRAD

2023-12-19T23:41:55Z

KFWalker:

{| class="wikitable" style="width: 50%;"
|-
|'''''Point of Contact(s):''' Kevin Walker''
|-
|[[File:RMIT IRAD Stage 2 SOW - no$.pdf|thumb|7075-T7351 work]]'''''Objective:''' IRAD stands for "Internal Research and Development" which is a mechanism used by QinetiQ to fund research projects. In this case, we have completed a major project including testing and analytical model development. The project aim was to account for an observed behaviour for modelling of fatigue crack growth where the analysis results consistently under predict the test life. This was evident in the DST ASSIST Challenge presented at the ASIP Conference in 2020. The project here considered three materials; 2024-T3, 7075-T6 and 7075-T7351. Testing was performed on Middle Tension (M(T)) specimens under conditions of Constant Amplitude loading in the constraint-loss regime, with and without spike overloads, and also under representative spectrum loading. The project scope is detailed in the attached documents.''[[File:FTA IRAD Stage 2 SOW - no$.pdf|thumb|2024-T3 and 7075-T6 IRAD]]
|-
|Results/outputs

*
* [[File:ICAF2023-Paper-Newman-Walker-final.pdf|thumb]][[File:Newman-Walker-ICAF2023.pdf|thumb]]
|}

2022 Walker-Newman IRAD

2023-12-19T23:40:41Z

KFWalker:

2022 Walker-Newman IRAD

2023-12-19T23:38:42Z

KFWalker:

2022 Walker-Newman IRAD

2023-12-19T23:36:54Z

KFWalker:

{| class="wikitable" style="width: 50%;"
|-
|'''''Point of Contact(s):''' Kevin Walker''
|-
|[[File:RMIT IRAD Stage 2 SOW - no$.pdf|thumb|7075-T7351 work]]'''''Objective:''' IRAD stands for "Internal Research and Development" which is a mechanism used by QinetiQ to fund research projects. In this case, we have completed a major project including testing and analytical model development. The project aim was to account for an observed behaviour for modelling of fatigue crack growth where the analysis results consistently under predict the test life. This was evident in the DST ASSIST Challenge presented at the ASIP Conference in 2020. The project here considered three materials; 2024-T3, 7075-T6 and 7075-T7351. Testing was performed on Middle Tension (M(T)) specimens under conditions of Constant Amplitude loading in the constraint-loss regime, with and without spike overloads, and also under representative spectrum loading. The project scope is detailed in the attached documents.''[[File:FTA IRAD Stage 2 SOW - no$.pdf|thumb|2024-T3 and 7075-T6 IRAD]]
|-
|Results/outputs

*

*
* [[File:ICAF2023-Paper-Newman-Walker-final.pdf|thumb]]
* [[File:Newman-Walker-ICAF2023.pdf|thumb]]
|-
|'''Submissions'''
*xx
|}

2022 Walker-Newman IRAD

2023-12-19T23:34:40Z

KFWalker:

{| class="wikitable" style="width: 50%;"
|-
|'''''Point of Contact(s):''' Kevin Walker''
|-
|[[File:RMIT IRAD Stage 2 SOW - no$.pdf|thumb|7075-T7351 work]]'''''Objective:''' IRAD stands for "Internal Research and Development" which is a mechanism used by QinetiQ to fund research projects. In this case, we have completed a major project including testing and analytical model development. The project aim was to account for an observed behaviour for modelling of fatigue crack growth where the analysis results consistently under predict the test life. This was evident in the DST ASSIST Challenge presented at the ASIP Conference in 2020. The project here considered three materials; 2024-T3, 7075-T6 and 7075-T7351. Testing was performed on Middle Tension (M(T)) specimens under conditions of Constant Amplitude loading in the constraint-loss regime, with and without spike overloads, and also under representative spectrum loading. The project scope is detailed in the attached documents.''[[File:FTA IRAD Stage 2 SOW - no$.pdf|thumb|2024-T3 and 7075-T6 IRAD]]
|-
|Results/outputs

* [[File:Newman-Walker-ICAF2023.pdf|thumb]]
|-
|'''Submissions'''
*xx
|}

2022 Walker-Newman IRAD

2023-12-19T23:33:41Z

KFWalker:

2022 Walker-Newman IRAD

2023-12-19T23:32:52Z

KFWalker:

{| class="wikitable" style="width: 50%;"
|-
|'''''Point of Contact(s):''' Kevin Walker''
|-
|[[File:RMIT IRAD Stage 2 SOW - no$.pdf|thumb|7075-T7351 work]]'''''Objective:''' IRAD stands for "Internal Research and Development" which is a mechanism used by QinetiQ to fund research projects. In this case, we have completed a major project including testing and analytical model development. The project aim was to account for an observed behaviour for modelling of fatigue crack growth where the analysis results consistently under predict the test life. This was evident in the DST ASSIST Challenge presented at the ASIP Conference in 2020. The project here considered three materials; 2024-T3, 7075-T6 and 7075-T7351. Testing was performed on Middle Tension (M(T)) specimens under conditions of Constant Amplitude loading in the constraint-loss regime, with and without spike overloads, and also under representative spectrum loading. The project scope is detailed in the attached documents.''[[File:FTA IRAD Stage 2 SOW - no$.pdf|thumb|2024-T3 and 7075-T6 IRAD]]
|-
|Results/outputs
[[File:Newman Walker ASIP 2022.pdf|thumb]][[File:ICAF2023-Paper-Newman-Walker-final.pdf|thumb]]Here are the results/outputs[[File:Newman-Walker-ICAF2023.pdf|thumb]]
|-
|'''Submissions'''
*xx
|}

File:Newman-Walker-ICAF2023.pdf

2023-12-19T23:27:24Z

KFWalker:

Newman Walker 2023 ICAF Presentation

2022 Walker-Newman IRAD

2023-12-19T01:31:08Z

KFWalker:

{| class="wikitable" style="width: 50%;"
|-
|'''''Point of Contact(s):''' Kevin Walker''
|-
|[[File:RMIT IRAD Stage 2 SOW - no$.pdf|thumb|7075-T7351 work]]'''''Objective:''' IRAD stands for "Internal Research and Development" which is a mechanism used by QinetiQ to fund research projects. In this case, we have completed a major project including testing and analytical model development. The project aim was to account for an observed behaviour for modelling of fatigue crack growth where the analysis results consistently under predict the test life. This was evident in the DST ASSIST Challenge presented at the ASIP Conference in 2020. The project here considered three materials; 2024-T3, 7075-T6 and 7075-T7351. Testing was performed on Middle Tension (M(T)) specimens under conditions of Constant Amplitude loading in the constraint-loss regime, with and without spike overloads, and also under representative spectrum loading. The project scope is detailed in the attached documents.''[[File:FTA IRAD Stage 2 SOW - no$.pdf|thumb|2024-T3 and 7075-T6 IRAD]]
|-
|Results/outputs
[[File:Newman Walker ASIP 2022.pdf|thumb]][[File:ICAF2023-Paper-Newman-Walker-final.pdf|thumb]]
|-
|'''Submissions'''
*xx
|}

2022 Walker-Newman IRAD

2023-12-19T01:29:58Z

KFWalker:

{| class="wikitable" style="width: 50%;"
|-
|'''''Point of Contact(s):''' Kevin Walker''
|-
|'''''Objective:''' IRAD stands for "Internal Research and Development" which is a mechanism used by QinetiQ to fund research projects. In this case, we have completed a major project including testing and analytical model development. The project aim was to account for an observed behaviour for modelling of fatigue crack growth where the analysis results consistently under predict the test life. This was evident in the DST ASSIST Challenge presented at the ASIP Conference in 2020. The project here considered three materials; 2024-T3, 7075-T6 and 7075-T7351. Testing was performed on Middle Tension (M(T)) specimens under conditions of Constant Amplitude loading in the constraint-loss regime, with and without spike overloads, and also under representative spectrum loading. The project scope is detailed in the attached documents.''[[File:FTA IRAD Stage 2 SOW - no$.pdf|thumb|2024-T3 and 7075-T6 IRAD]]
|-
|Results/outputs
[[File:Newman Walker ASIP 2022.pdf|thumb]][[File:ICAF2023-Paper-Newman-Walker-final.pdf|thumb]]
|-
|'''Submissions'''
*xx
|}

2022 Walker-Newman IRAD

2023-12-19T01:28:51Z

KFWalker: More outputs added

[[File:RMIT IRAD Stage 2 SOW - no$.pdf|thumb|7075-T7351 IRAD]]
{| class="wikitable" style="width: 50%;"
|-
|'''''Point of Contact(s):''' Kevin Walker''
|-
|'''''Objective:''' IRAD stands for "Internal Research and Development" which is a mechanism used by QinetiQ to fund research projects. In this case, we have completed a major project including testing and analytical model development. The project aim was to account for an observed behaviour for modelling of fatigue crack growth where the analysis results consistently under predict the test life. This was evident in the DST ASSIST Challenge presented at the ASIP Conference in 2020. The project here considered three materials; 2024-T3, 7075-T6 and 7075-T7351. Testing was performed on Middle Tension (M(T)) specimens under conditions of Constant Amplitude loading in the constraint-loss regime, with and without spike overloads, and also under representative spectrum loading. The project scope is detailed in the attached documents.''[[File:FTA IRAD Stage 2 SOW - no$.pdf|thumb|2024-T3 and 7075-T6 IRAD]]
|-
|Results/outputs
[[File:Newman Walker ASIP 2022.pdf|thumb]][[File:ICAF2023-Paper-Newman-Walker-final.pdf|thumb]]
|-
|'''Submissions'''
*xx
|}

File:ICAF2023-Paper-Newman-Walker-final.pdf

2023-12-19T01:28:22Z

KFWalker:

ICAF 2023 Paper

2022 Walker-Newman IRAD

2023-12-19T01:26:42Z

KFWalker: Added outputs

File:Newman Walker ASIP 2022.pdf

2023-12-19T01:25:57Z

KFWalker:

ASIP 2022 Presentation

2022 Walker-Newman IRAD

2023-12-19T01:19:44Z

KFWalker: Added IRAD details

{| class="wikitable" style="width: 50%;"
|-
|'''''Point of Contact(s):''' Kevin Walker''
|-
|'''''Objective:''' IRAD stands for "Internal Research and Development" which is a mechanism used by QinetiQ to fund research projects. In this case, we have completed a major project including testing and analytical model development. The project aim was to account for an observed behaviour for modelling of fatigue crack growth where the analysis results consistently under predict the test life. This was evident in the DST ASSIST Challenge presented at the ASIP Conference in 2020. The project here considered three materials; 2024-T3, 7075-T6 and 7075-T7351. Testing was performed on Middle Tension (M(T)) specimens under conditions of Constant Amplitude loading in the constraint-loss regime, with and without spike overloads, and also under representative spectrum loading. The project scope is detailed in the attached documents.''[[File:FTA IRAD Stage 2 SOW - no$.pdf|thumb|2024-T3 and 7075-T6 IRAD]]
|-
|Results
*xx
|-
|'''Submissions'''
*xx
|}
[[File:RMIT IRAD Stage 2 SOW - no$.pdf|thumb|7075-T7351 IRAD]]

File:RMIT IRAD Stage 2 SOW - no$.pdf

2023-12-19T01:18:07Z

KFWalker:

Statement of Work detailing the IRAD project work related to the 7075-T7351 material