MMPDS Coordination Meeting · 2019. 11. 20. · 19-10 Secondary Properties for 718 Bar per AMS 5662...

Minutes of the 34th MMPDS

Coordination Meeting

Held in:

Charlotte, NC September 23-27, 2019r 2019

Compiled by: Prepared for:

Battelle FAA William J. Hughes Technical 505 King Avenue Atlantic City, NJ 08405Columbus, OH 43201-2693

Copyright 2019 Battelle Memorial Institute. All rights reserved. Unauthorized duplication or distribution may violate the Copyright Laws of the United States and of other jurisdictions.

34th MMPDS Coordination Meeting – Table of Contents

Chairman’s Remarks ..................................................................................................................................... 1

Approval of the 33rd MMPDS Meeting Minutes ......................................................................................... 1

Summaries..................................................................................................................................................... 2

New Item Numbers Assigned in 2019 ...................................................................................................... 3Closed Agenda Items .................................................................................................................................. 6Final Minutes Agenda Item Summary .................................................................................................... ...8

TOC-1

34th MMPDS Coordination Meeting

Chairman’s Remarks – Mark James, FAA

I want to thank everyone who participated in the 34th MMPDS coordination meetings held in Charlotte, North Carolina. I would also like to thank the Battelle team for organizing and managing the week’s activities.

I would also like to thank the outgoing Chair and Vice-Chairs of the Industry Steering Group (ISG), Andrew Steevens and Peter Bittner, for their time and service, and welcome Peter Bittner and Christoph Heine (Airbus) as the incoming ISG Chair and Vice-Chair’s respectively.

In addition to this changing of the guard, Jim Kabbara has moved on to other activities that demand 100% of his time. So we say goodbye and thank him profusely for all of his efforts in supporting MMPDS activities over the years. I will be moving from the Vice-Chair to the Chairman Position and look forward to the challenges ahead. Due to the increased demand on my time, I must give up some other things. So Michael Gorelik, who is the FAA Chief Scientist and Technical Advisor (CSTA) for Fatigue and Damage Tolerance, has agreed to take over my Co-Chair Position alongside Sam Cordner (NASA) overseeing the Emerging Technology Task Group (ETTG). A big welcome and thanks to him for stepping up into this role.

Thanks again for attending the 34th MMPDS Coordination meetings. Your commitment, dedication and donation of your valuable time to maintain MMPDS is most appreciated. I look forward to seeing everyone at the 35th MMPDS Coordination meetings.

Best Regards,Chairman, Mark James

Mark JamesStandards Staff Engineer for Small AirplanesStructures, Flammability andNoise Control Specialist (NCS)

Approval of the 33rd MMPDS Meeting Minutes

The 33rd MMPDS Coordination Meeting Minutes were approved.

1

34 th MMPDS Coordination Meeting Minutes

SUMMARIES

2

19-01 Stabilization of Specifications and Other Specification Changes

19-02 Equivalent Rounds for Steel Alloys

19-03 Revision of Sunset Clause

19-04 Considerations for Certifying an AM Part

19-05 Derived Properties Requirement When Expanding Thickness Range in a Table

19-06 Identification of Forging Types for PH13-8 and MLX17

19-07 Identification of Response to Heat Treat Properties in MMPDS

19-08 One-Sample Equivalence Method

19-09 Removing Test Specification Version

19-10 Secondary Properties for 718 Bar per AMS 5662 and AMS 5663

19-11 Updates to Several Load Control Fatigue Figures

19-12 Clarify Minimum Content Requirements for Public Specifications - Section 9.2.2

19-13 Mechanical and Physical Properties of 2043-T85 Aluminum Alloy Extrusions

19-14 Clarification of Off-Axis Orientation

19-15 Update Section 9.4.1"S-Basis Minimum Properties" to Include Censored Normal

19-16 Update Creep Curve Formats

19-17 Minimum Content Requirements for Public Specifications - Volume II

19-18 Addition of Stress-Strain Curves & Physical Properties for 7097-T7651 Plate

19-19 Consideration of a new Equivalent Stress model for Load-Controlled Fatigue

19-20 Data Requirements for Volume II

19-21 Determine Buckling Notes for Existing Figures With Dual-Shape Parameters

19-22 Develop a Heat-Normalized Approach for Strength vs. Temperature Analysis


New Item Numbers Assigned in 2019

3



19-23 Review and Revise MMPDS Bylaws

19-24 Guidelines for Identification of Punch/Blanking Shear Properties

19-25 Guidelines for Derived Properties for Legacy Alloys

19-26 Definitions for Process Intensive Materials & Technologies - Volume II

19-27 Stabilization of AMS-S-6758 for 4130 Steel Bars

19-28 Secondary Properties - Disposition of Legacy values and Publication of New Alloys

19-29 Addition of Term Definition for Lower Tail Censoring (Section 9.5.4.10)

19-30 Correction to Creep Stress Parameters for L-605 and Haynes 282 Alloys

19-31 Update of SCC and Modulus for 2014-T651 Aluminum Alloy Plate

19-32 Stress corrosion cracking of 7xxx aluminum alloys in high humidity environments: testing methods and propagation mechanisms

19-33 Upgrade Bearing Strength from S- to A-/B-Basis 7075-T6 Bare Sheet

19-34 Waive Requirement for Bearing and/or Shear Properties When Appropriate

19-35 Re-Evaluate R-Squared Acceptance Requirment for Joint Allowables

19-36 Update Section 9.2.4.7 Fastener Strength Table Sunset Clause

19-37 Establish a Guideline for Reinserting Chapter 8 Tables.

19-38 Process Intensive Materials & Technologies SDO Coordination

19-39 Review Chapter 8 Tables Removed by the Sunset Clause

19-40 Review Section 9.4 Substantiation of Data

4



19-41 Confirmation of Design Properties of AMS 4911 for Ti-6Al-4V Sheet and Plate

19-42 Confirmation of Design Properties of AMS 4202 for 7475-T7251 Aluminum Alloy Plate

19-43 Upgrade of Design Properties of AMS 4154 for 7075-T6511 Aluminum Alloy Extrusion

19-44 Update Stress-Strain Figures to Report Bron Method Relevance

19-45 Addition of A206.0-T4 and T71 Sand Casting Fatigue Analyses

19-46 Review Table 8.1.2(a)

5

10-17Re-evaluate Legacy Alloy Stress-Strain

Curves in Chapter 3

Approved and

ClosedTables will be removed as shown.

14-24

Identification of Stress-Strain Curves

Which Have Been Evaluated for 2-Shape

Factor for Chapters 4-7

Approved and

Closed

New note for Bron method evaluation approved. Open new

Item 19-44 to add this note to old figures that were

evaluated for the Bron method, but found not relevant.

16-40Estimated Values in Table 7.3.2.0(c )

Copper Beryllium Strip

Approved and

Closed

16-41Update Static Property Examples in

Section 9.8.1

Approved and

Closed

Example problems approved as shown. Proposed MIDAS

output Excel file will be sent out to all members for

feedback and desired outputs. New item will be opened for

new example additions.

17-09 Fatigue Curves for 2099-T83 Extrusion

Approved w

Changes and

Closed

Fatigue curves approved with editorial changes to

correlative information in Figure a.

17-10 Fatigue Curve for 2099-T81 ExtrusionApproved and

ClosedFatigue curve approved as shown.

17-33Alternative Fitting Function for Effect of

Temperature Data

Closed w no

ActionOn hold until data needing this method are received.

17-47Clarification of Guidance for

Normal/Censored Normal Analysis

Approved w

Changes and

Closed

Approved with the note to add "a)" to footnote text below

the revised table.

17-58 How Casting Specification WorkClosed w no

Action

18-06Revision of Figure 9.3.4.4 Failure Codes for

Fasteners

Closed w no

Action

18-09 Update Creep Guidance in Chapter 1Approved and

Closed

18-14

Addition of A206.0-T4 and T71 Sand

Casting Physical Properties, and Fatigue

Analyses

60 Day

Approval

Stress-strain curves will be approved after 60 days. Open a

new Item 19-45 to continue fatigue analysis.

18-18Update AMS-QQ-A-250/4 in Table

8.2.2.1.2(a) (MMPDS-13)

Approved w

Changes and

Closed

Table approved with editiorial changes.

18-22Legacy Confirmation and Upgrade to A-

and B-basis for 7075-T76511 Extrusion

Approved w

Changes and

Closed

For some of the derived properties, change to S basis for 1-

2in thickness ranges due to small number of samples.

Kaiser and Universal Alloys volunteered to send material

and data to AFRL for testing. Goal is to get 20 tests in

thicker thickness range (2.5-3in).


Approved w

Changes and

Closed

FTG: Approved with changes. Opened Item 19-36 to make

additional revisions and Item 19-37, and -39 to revisit

tables that have already been removed from Chapter 8.


Approved w

Changes and

Closed

GTG: Approved with changes. Open a new item to address

when a table that cannot be confirmed would be removed

vs. just watermarked or footnoted.

CLOSED AGENDA ITEMS

34th Meeting MinutesItem No ActionTitle


6

34th Meeting MinutesItem No ActionTitle

19-08 One-Sample Acceptance Testing Method60 Day

Approval

Will circulate version with editiorial changes for review and

approval.

19-13aMechanical and Physical Properties of

2043-T85 Aluminum Alloy Extrusions

Approved and

ClosedApproved with editorial change to fix L45LT formatting.

19-13bMechanical and Physical Properties of


60 Day

Approval

Stress-strain curves moved to 60 day approval. Relevant

Bron evaluation and buckling notes will be added.

19-14 Clarification of Off-Axis Orientation

Approved w

Changes and

Closed

Proposed sections will be updated with agreed upon

changes .

19-18Addition of Stress-Strain Curves & Physical

Properties for 7097-T7651 Plate

Approved w

Changes and

Closed

Stress-strain curves and physical properties approved the

content of the Handout with minor editorial changes.

19-22Develop a Heat-Normalized Approach for

Strength vs. Temperature Analysis

Approved and

Closed

19-23 Review and Revise MMPDS BylawsApproved and

Closed

Bylaws will be revised as proposed and posted on the

MMPDS.org website

19-24Guidelines for Identification of

Punch/Blanking Shear Properties

Approved and

ClosedSections will be revised as shown.

19-26Definitions for Process Intensive Materials

& Technologies - Volume II

Approved w

Changes and

Closed

Remove definitions of Feedstock Heat and Feedstock Lot.

The <alternate> definition was adopted for xxxx. Remaining

definitions approved with changes.

19-27Stabilization of AMS-S-6758 for 4130 Steel

Bars

Approved and

Closed

19-28

Secondary Properties - Disposition of

Legacy values and Publication of New

Alloys

60 Day

Approval

The policy documented with changes as discussed will be

sent out for 60-day approval in the minutes. This policy will

be used until 15-36 is resolved. The Handbook will not be

changed but the policy will be shared in the interim.

19-29Addition of Term Definition for Lower Tail

Censoring (Section 9.5.4.10)

Approved and

Closed

19-30Correction to Creep Stress Parameters for

L-605 and Haynes 282 Alloys

Approved and

Closed

19-31Update of SCC and Modulus for 2014-

T651 Aluminum Alloy Plate

Approved and

ClosedMTG decided that Ec should not be changed.

19-32

Stress corrosion cracking of 7xxx

aluminum alloys in high humidity

environments: testing methods and

propagation mechanisms

Closed w no

Action

Presentation was given by Constellium. Approved version

will be circulated in the minutes.

34th MMPDS Coordination MeetingCLOSED AGENDA ITEMS

7

Final Initial

03-14 MTG ASGReview of Currency of Existing Database

on Legacy AlloysContinue

Open new items I9-41 and 19-42 for AMS 4911 (Ti-6Al-4V)

and AMS 4202 (7475-T7351).

04-21 FTG Fastener Tables of Sunset Review Interest ContinueThis item is on hold, pending items 12-50, 12-105, 17-28,

17-29, and 17-30.

08-23 FTGSunset Review of Table 8.1.3.2.2(c),

NAS1921CContinue

This item is on hold, pending items 12-50, 12-105, 17-28,

17-29, and 17-30.

09-13 FTGSunset Review of Table 8.1.3.2.3(a),

MS21140Continue


17-29, and 17-30.

10-14 MTG ASGWrought Aluminum Alloys with S-Basis

MinimumsContinue

Open new item 19-43 for AMS 4154 7075-T6511 extrusion

for analysis.

10-15 MTGMechanical Properties for Aluminum

Alloy Forgings Continue

Item named changed to remove "Aluminum" to apply this

item to all forgings. Data will be requested for Ti-6Al-4V

die forgings per AMS 4928, 6931, and 4920. Analysis for

AMS 4179 will be initiated if time provided. More guidance

needed from PSG on #8.

10-17 MTGRe-evaluate Legacy Alloy Stress-Strain

Curves in Chapter 3

Approved and

ClosedTables will be removed as shown.

10-25 GTG-F FTGFastener Installation Parameters for Joint

Tension AllowablesContinue No effort at this time.

11-05 MTG AMS Coordination Continue

Provided updates on hot topics from the AMS meeting

held Sept 16-19. Recently balloted AMS specs will be listed

in the minutes.

11-15 MTGDivision of Low Alloy Steel Table

2.3.1.0(g2) Continue

Corrections and comments will be incorporated. Revised

table will be proposed at the next meeting.

11-38 FTG

Sunset Review of Flush Head, Mechanical

Lock Spindle Blind Rivet Table 8.1.3.2.2(e)

NAS 1921 M

ContinueThis item is on hold, pending items 12-50, 12-105, 17-28,

17-29, and 17-30.

11-43 FTGSupporting Data and Basis Identification

for Table 8.1.2(b)Continue No effort at this time.

12-17 MTG

ASG &

MATSS

G

Footnote for Non-Ferrous Alloys Test

Specimen When Not From Full ThicknessContinue

Need to identify non-ferrous alloys where this footnote is

applicable.

12-50 GTG-F FTGEvaluation of new Regression and

Confidence Models for Lap Joint TestsContinue No effort at this time.

12-52 GTG-F FTG Fastener Minimum t/D Requirements ContinueContinued. Minutes will be circulated for review. New

proposal will be prepared for the next meeting

12-89 GTG PSGTarget Materials for Propulsion

ApplicationsContinue PSG did not have a formal meeting.

12-105 GTG-F FTGModification to the Sunset Criteria

ProceduresContinue This item is pending resolution of Item 17-28.

13-34 MTGAddition of AMS 4919 Ti-6-2-4-2 Plate

PropertiesContinue

Waiting on fatigue crack growth data from AFRL. Tiffany D

from Arconic would be best POC for data we are waiting

on. Battelle will go ahead and work on static properties

from ATI and Arconic.

13-50 GTG ASTM Coordination Continue

No notable updates. Waiting on ASTM to work on

specification related to Item 14-19. ASTM B831 is ready to

be used in round robin testing to develop precision and

bias criteria. Contact Battelle or Hailey Jesequel if you are

interested.

14-19 GTG Inclusion of KIsi Fracture Toughness Data ContinueASTM is still working on specification. There is an

outstanding ballot.

34th Meeting MinutesTitle ActionItem

No

Responsible

FINAL MINUTES AGENDA ITEM SUMMARY


8

Final Initial34th Meeting MinutesTitle Action

Item

No

Responsible

14-24 MTG

Identification of Stress-Strain Curves

Which Have Been Evaluated for 2-Shape

Factor for Chapters 4-7

Approved and

Closed

New note for Bron method evaluation approved. Open

new Item 19-44 to add this note to old figures that were

evaluated for the Bron method, but found not relevant.

14-28 FTGSunset Review of Table 8.1.4.2(i), LGPL2SC-

V Pin, 3SLC-C Collar in Clad 7075-T6Continue


17-29, 17-30, and 18-23.

14-62 GTGEvaluate Inclusion of other Fracture

Toughness Data (JIC, KJIC)Continue

Continue with proposed approach. Sam Cordner from

NASA provided an outline.

14-66 MTGAddition of 15-5PH Sheet S-Basis per AMS

5862 for H1025 Condition Continue Data are needed.

14-67 MTGAddition of 3-6 Inch Range for 7075-T73X

Bar and Rod per AMS 4124Continue Waiting on data.

15-13 MTGISG &

GSG

Clarification of Shear Orientation for

Legacy AlloysContinue

Continued. Need resolution of Items 19-24 & 19-25 and

more research.

15-19 GTG-F FTGVerification of Secondary Modulus

Methods for FastenersContinue No effort at this time.

15-36 GTGISG &

GSGModification of Indirect Analysis Equation Continue

Will continue developing improvements to indirect

method. Next steps are defining parameter space for

which new approach is acceptable and tuning approach to

account for skewness.

15-38 GTG

Reevaluation of Degrees of Freedom

Calculation for Regression with Effect of

Temperature

Continue Feedback requested after minutes are circulated.

15-40 GTGASG/M

ATSSG

Guidelines for When Specimens Are Not

From Full ThicknessContinue

More end-user metallurgist and end-user stress analyst

input needed on this topic. Suggestions from GTG

discussion will be incorporated.

15-42 MTGCasting Allowables for 15-5PH and 17-4PH

steelContinue Analysis initiated.

16-02 GTGUpdates to Strain Departure Methods for

Stress-Strain Curve AnalysesContinue Refined method will be proposed at the next meeting.

16-12 FTGIdentifying Basis of Fastener Shear

Strength on Remaining TablesContinue No effort at this time

16-13 FTGCorrections to Table 8.1.3.2.2(c) NAS

1921CContinue


17-29, 17-30, and 18-23.

16-20 GTG ETTGEquivalence Testing Assuming Change in

Process (From Item 11-40)Continue

This item is on hold while working on one-sample

equivalence method.

16-23 GTG PSGRe-evaluate Guidelines for Effect of

Temperature CurvesContinue PSG did not have a formal meeting.

16-29 GTG ASGReview of Section 1.4.7 Bearing

PropertiesContinue

Feedback will be incorporated into an agenda for the next

meeting.

16-36 GTG-F FTG

Use of T99 as A-Basis When Higher than

Specification for Fastener Shear and

Tension

ContinueFTG agreed with this approach. Agenda item will be

prepared for the next meeting with a formal proposal.

16-37 GTG-F FTGChapter 1 Guidelines on Fastener Design

Allowable UsageContinue No effort at this time.

16-40 MTGEstimated Values in Table 7.3.2.0(c )

Copper Beryllium Strip

Approved and

Closed

16-41 GTGUpdate Static Property Examples in

Section 9.8.1

Approved and

Closed

Example problems approved as shown. Proposed MIDAS

output Excel file will be sent out to all members for

feedback and desired outputs. New item will be opened

for new example additions.

34th MMPDS Coordination MeetingFINAL MINUTES AGENDA ITEM SUMMARY

9


Item

No

Responsible

17-09 MTG Fatigue Curves for 2099-T83 Extrusion

Approved w

Changes and

Closed

Fatigue curves approved with editorial changes to

correlative information in Figure a.

17-10 MTG Fatigue Curve for 2099-T81 ExtrusionApproved and

ClosedFatigue curve approved as shown.

17-19 MTGAddition of Transverse Bearing Strength

Properties for Custom 465 BarContinue

Arvind M. (Caprpenter) said at 33rd meeting that he will

provide data.

17-23 GTG Legacy Alloy Review Strategy – Near Term Continue On hold until Fall 2020.

17-25 GTGRe-evaluation of Reduced Ratio Sample

Size DeterminationContinue On hold pending Item 15-36.

17-26 GTGASG/MATSSG/PSGGuidelines for Generation and Use of A/B

Allowables for CastingsContinue

GTG decided that this item is not ready to be finalized.

Boeing and others to send Battelle technical comments to

review.

17-26b GTGASG/MATSSG/PSGGuidelines for Generation and Use of A/B

Allowables for CastingsContinue

Invitation will be sent for further discussion on the

comments contained in this handout and the related item.

17-28 GTG-F FTGConsideration of Origin in Multiple

Regression Analysis for Joint AllowablesContinue No effort at this time.

17-29 GTG-F FTG

Replacement of T90 Yield Curve with a

Multiple-Regression Typical Yield Curve

for Joint Allowables

Continue No effort at this time.

17-30 GTG-F FTGRevision of Table Format for Joint

AllowablesContinue No effort at this time.

17-31 FTGSunset Shear Strength Rule Criteria

AdditionContinue No effort at this time.

17-32 GTG-F FTG Edit Table 8.1.5.1 Continue This item is on hold, pending item 12-52.

17-33 GTG PSGAlternative Fitting Function for Effect of

Temperature Data

Closed w no

ActionOn hold until data needing this method are received.

17-34 GTG SSWGGuidelines for Rejection of Stress-Strain

Curves from Parametric AnalysisContinue

GTG agreed with approach. Proposal will be prepared for

the Spring meeting.

17-45 MTGEffect of Temperature Curves for 2395-

T84 ExtrusionContinue No effort on this item.

17-47 GTG-F FTGClarification of Guidance for

Normal/Censored Normal Analysis

Approved w

Changes and

Closed

Approved with the note to add "a)" to footnote text

below the revised table.

17-52 GTG FatWGReview Section 9.6.1 - Load and Strain

Control FatigueContinue

P. Vanderpool has requested a list of individuals interested

in working on this item. Contact D. Hall for more

information.

17-54 MTGInclusion of Properties for AMS 4221,

2124-T8151 PlateContinue Data are requested.

17-55 MTG PSG Supplemental Data for Ti-6-2-4-2 Forging Continue No effort at this time.

17-56 MTG FCG Analysis for 2397-T87 Plate Continue Waiting on data. Nick Wood is checking on available data.

17-58 MTG How Casting Specification WorkClosed w no

Action

17-61 GTG FatWGRevising R-curve Requirement in Table

9.2.4Continue

17-62 GTG FatWGRevising Fatigue Requirement in Table

9.2.4Continue

17-63 GTG FatWGUse of Box-Cox Transformation in the

Fitting of Fatigue DataContinue Slides will be included in the minutes


10


Item

No

Responsible

18-05 GTG MATSSG Data Quantities for Large Gage Ranges Continue MATSSG discussed this and it requires additional work.

18-06 GTG-F FTGRevision of Figure 9.3.4.4 Failure Codes

for Fasteners

Closed w no

Action

18-08 MTG

718 Investment Cast (AMS5383) Addition

of Tensile A/B-basis and Elevated

Temperature

ContinueWill incorporate feedback and propose new table at the

next meeting.

18-09 GTG PSG Update Creep Guidance in Chapter 1Approved and

Closed

18-10 GTG Data Requirements for Forgings Continue On hold.

18-13 GTGGuidelines for Exclusion of Low Secondary

Property Test ValuesContinue On hold pending resolution of item 15-36.

18-14 MTG

Addition of A206.0-T4 and T71 Sand

Casting Physical Properties, and Fatigue

Analyses

60 Day

Approval

Stress-strain curves will be approved after 60 days. Open a

new Item 19-45 to continue fatigue analysis.

18-18 MTGUpdate AMS-QQ-A-250/4 in Table

8.2.2.1.2(a) (MMPDS-13)

Approved w

Changes and

Closed

Table approved with editiorial changes.

18-21 MTGUpgrade S-basis to A/B-basis for 2219-

T852 Aluminum Alloy Hand ForgingsContinue

Primary supplier will send correct file. Chose to disregard

prepared agenda item. Analysis will be redone with new

data package.

18-22 MTGLegacy Confirmation and Upgrade to A-

and B-basis for 7075-T76511 Extrusion

Approved w

Changes and

Closed

For some of the derived properties, change to S basis for 1-

2in thickness ranges due to small number of samples.

Kaiser and Universal Alloys volunteered to send material

and data to AFRL for testing. Goal is to get 20 tests in

thicker thickness range (2.5-3in).

18-28 GTGUsing the Logarithm Transformation with

MIDAS Analysis of Minimum PropertiesContinue

Status item. Slides will be in circulated in the minutes for

review.

19-03 GTG-F FTG Revision of Sunset Clause

Approved w

Changes and

Closed

FTG: Approved with changes. Opened Item 19-36 to make

additional revisions and Item 19-37, and -39 to revisit

tables that have already been removed from Chapter 8.

19-03 GTG-F Revision of Sunset Clause

Approved w

Changes and

Closed

GTG: Approved with changes. Open a new item to address

when a table that cannot be confirmed would be

removed vs. just watermarked or footnoted.

19-04 GTG ETTG Considerations for Certifying an AM Part ContinueStatus item. Slides will be in circulated in the minutes for

review.

19-05 GTGSecondary Properties Requirement When

Expanding Thickness Range in a TableContinue

Further discussion needed.

ASG consensus (high percent) want to keep the A/B in the

new thickness ranges even if secondary properties data

are not provided. Add guidance to Chapter 1.

19-08 GTG One-Sample Acceptance Testing Method60 Day

Approval

Will circulate version with editiorial changes for review

and approval.

19-10 MTGSecondary Properties for 718 Bar per AMS

5662 and AMS 5663 Continue Data are needed.

19-13a MTGMechanical and Physical Properties of


Approved and

ClosedApproved with editorial change to fix L45LT formatting.

19-13b MTGMechanical and Physical Properties of


60 Day

Approval

Stress-strain curves moved to 60 day approval. Relevant

Bron evaluation and buckling notes will be added.


11


Item

No

Responsible

19-14 GTG Clarification of Off-Axis Orientation

Approved w

Changes and

Closed

Proposed sections will be updated with agreed upon

changes .

19-17 GTG ETTGMinimum Content Requirements for

Public Specifications - Volume IIContinue

Draft will be circulated to AMS AM and ASTM for

feedback. Create a new item for AM SDO coordination.

19-18 MTGAddition of Stress-Strain Curves &

Physical Properties for 7097-T7651 Plate

Approved w

Changes and

Closed

Stress-strain curves and physical properties approved the

content of the Handout with minor editorial changes.

19-19 GTG FatWGConsideration of a new Equivalent Stress

model for Load-Controlled FatigueContinue

19-20 GTG ETTG Data Requirements for Volume II Continue

Item will be continued. The data generation and analysis

subteam will review and prepare an item for the next

meeting.

19-21 MTGDetermine Buckling Notes for Existing

Figures With Dual-Shape ParametersContinue No effort at this time.

19-22 GTGDevelop a Heat-Normalized Approach for

Strength vs. Temperature Analysis

Approved and

Closed

19-23 GTGISG &

GSGReview and Revise MMPDS Bylaws

Approved and

Closed

Bylaws will be revised as proposed and posted on the

MMPDS.org website

19-24 GTGGuidelines for Identification of

Punch/Blanking Shear Properties

Approved and

ClosedSections will be revised as shown.

19-25 GTGGuidelines for Derived Properties for

Legacy AlloysContinue Will be circulated to MATSSG and ASG for discussion.

19-26 GTG ETTGDefinitions for Process Intensive Materials

& Technologies - Volume II

Approved w

Changes and

Closed

Remove definitions of Feedstock Heat and Feedstock Lot.

The <alternate> definition was adopted for xxxx.

Remaining definitions approved with changes.

19-27 MTGStabilization of AMS-S-6758 for 4130 Steel

Bars

Approved and

Closed

19-28 GTG

Secondary Properties - Disposition of

Legacy values and Publication of New

Alloys

60 Day

Approval

The policy documented with changes as discussed will be

sent out for 60-day approval in the minutes. This policy

will be used until 15-36 is resolved. The Handbook will not

be changed but the policy will be shared in the interim.

19-29 GTGAddition of Term Definition for Lower Tail

Censoring (Section 9.5.4.10)

Approved and

Closed

19-30 MTGCorrection to Creep Stress Parameters for

L-605 and Haynes 282 Alloys

Approved and

Closed

19-31 MTGUpdate of SCC and Modulus for 2014-

T651 Aluminum Alloy Plate

Approved and

ClosedMTG decided that Ec should not be changed.

19-32 MTG

Stress corrosion cracking of 7xxx

aluminum alloys in high humidity

environments: testing methods and

propagation mechanisms

Closed w no

Action

Presentation was given by Constellium. Approved version

will be circulated in the minutes.

19-33 MTGUpgrade Bearing Strength from S- to A-/B-

Basis 7075-T6 Bare SheetContinue Agenda item will be prepared for the next meeting.


12


Item

No

Responsible

19-NIN ETTGCMH-17/MMPDS Coordination &

CollaborationContinue

Industry rejected the idea for co-located meeting. The ISG

had already approved the western US meeting locations.

One day is not enough to discuss important topics.

MMPDS and CMH-17 will have separate meeting for a

collaboration. Related activity will be tracked under item

19-38, Process Intensive Materials & Technologies SDO

Coordination.

19-34 GTGWaive Requirement for Bearing and/or

Shear Properties When AppropriateContinue No effort on this item.

19-35 GTG-F FTGRe-Evaluate R-Squared Acceptance

Requirment for Joint AllowablesContinue

FTG will continue discussion on this item. Battelle will

review Fastener data versus the R2 = 0.90 guideline.

19-36 FTGUpdate Section 9.2.4.7 Fastener Strength

Table Sunset ClauseNew

Open new item for additional revisions related to item 19-

03

19-37 GTG FTGEstablish a Guideline for Reinserting

Chapter 8 Tables. New

Clear guidance is need, a priori, to establish the success

criterion for reinserting a table.

19-38 ETTGProcess Intensive Materials &

Technologies SDO CoordinationContinue

This new item was created with similar intent as 11-05 and

13-50 for AMS and ASTM coordination, respectively.

19-39 FTGReview Chapter 8 Tables Removed by the

Sunset ClauseNew

A list of Chapter 8 tables removed will be circulated for

prioritization. High priority tables will be reviewed per

guidelines established in Item 19-37.

19-40 GTG Review Section 9.4 Substantiation of Data NewClarify Guidelines for review of Legacy Alloys, Fasteners,

Tables, Information only, Upgrading entries from S to A/B.

19-41 MTGConfirmation of Design Properties of AMS

4911 for Ti-6Al-4V Sheet and PlateNew

From Item 03-14. Need to get full thickness range of plate,

not subset. Skull melt recently added to spec.

19-42 MTG

Confirmation of Design Properties of AMS

4202 for 7475-T7251 Aluminum Alloy

Plate

New From Item 03-14. Data from 2 suppliers.

19-43 MTG

Upgrade of Design Properties of AMS

4154 for 7075-T6511 Aluminum Alloy

Extrusion

NewFrom Item 10-14. J. Scheuring (Kaiser Aluminum) has

more recent data he can send.

19-44 MTGUpdate Stress-Strain Figures to Report

Bron Method RelevanceNew

19-45 MTGAddition of A206.0-T4 and T71 Sand

Casting Fatigue AnalysesNew

New Item to complete the fatigue analysis (load- and

strain-control).

19-46 FTG Review Table 8.1.2(a) New

The table identifies new rivets as being T4 and T3 after

installation. Confirm that the table is appropriately

labeled.


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MMPDS Coordination Meeting · 2019. 11. 20. · 19-10 Secondary Properties for 718 Bar per AMS 5662...

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Transcript of MMPDS Coordination Meeting · 2019. 11. 20. · 19-10 Secondary Properties for 718 Bar per AMS 5662...