mmpds minutes cover...jan 30, 2019 · 12-50 gtg-f ftg 9 evaluation of new regression and...

Public Minutes of the 30th MMPDS Coordination Meeting

Held in:

San Antonio, Texas March 28-31, 2017

Compiled by: Prepared for:

Battelle FAA William J. Hughes Technical

505 King Avenue Atlantic City, NJ 08405

Columbus, OH 43201-2693

Copyright 2017 Battelle Memorial Institute. All rights reserved. Unauthorized duplication or

distribution may violate the Copyright Laws of the United States and of other jurisdictions.

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TABLE OF CONTENTS

I. Introduction of Attendees I-1

II. Vice-Chairman's Remarks - Mark Freisthler, FAA I-1

III. Approval of the 30th MMPDS Meeting Minutes I-1

I-2

I-4

I-17

New Item Numbers Assigned in 2017

Agenda Item Summary

Meeting Attendance Summary

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30th MMPDS Coordination Meeting Minutes

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I. Introduction of Attendees

A list of the 30th Coordination Meeting attendees, indicating the meetings they attended, has been

incorporated into this document.

II. Vice-Chairman’s Remarks – Mark Freisthler, FAA

On March 28th through 31st, the 30th MMPDS General Coordination Meeting was held in San Antonio,

Texas. The meeting was very productive and well attended with representatives from major material

suppliers and material users world-wide including new international participant Lisi Aerospace (France)

The Industry Steering Group (ISG) continues to thrive with 38 companies from 10 countries. In addition,

the Government Steering Group (GSG) continues to provide substantial support to the MMPDS with

representatives from the FAA, USAF, Navy, and NASA in attendance. At the meeting, over 120 agenda

items were discussed resulting in significant additions to the MMPDS Handbook.

A couple of topics came up during the meeting that warrants additional attention. First is the continuing

efforts to verify the published derived values for legacy alloys. In general, it has been found that while data

for the directly derived data may be available, data needed to validate the indirect values are generally not

available. The Airframe Steering Group (ASG) proposed an approach for funding testing to obtain data

needed. The proposal suggested setting aside a percentage of current revenue streams to fund additional

testing. While the GSG does not believe that the current funding levels would allow us to dedicate these

resources without cutting into core MMPDS functions, further discussion regarding this proposal are

warranted. A team was formed to address the issue and report at the 31st MMPDS General Coordination

meeting.

The second topic is continuing the Emerging Technology Work Group (ETWG). While MMPDS has not

committed to publish a Process Intensive volume to address these materials in the near term, work needs to

continue to develop guidance which would allow data to be published sometime in the future.

Once again, I would like to thank everyone for their ongoing support and participation. I would also be

remiss if I did not recognize the contributions made by some individuals who will be moving on after this

meeting. Like any other organization, MMPDS’s continued contribution to industry depends on the support

of the individuals who share their knowledge and talents. While in some cases they did not wish to announce

their departure from the organization, their presence will be missed.

III. Approval of the 29th MMPDS Meeting Minutes

The 29th MMPDS Coordination Meeting Minutes were approved with no changes.

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17-01 Expand range for 2024-T351 AMS 4120 to 8.0 inches

17-02 Revision of 7136 and 2029Alclad Stress-Strain Curves

17-03 Stabilization of AMS6520 for 250 Grade Maraging Steel Sheet and Plate

17-04 Addition of 45 Degree Properties for 2055-T84 Aluminum Alloy Extrusions

17-05 Stabilization of Specifications for 2424 Bare and Clad Aluminum Alloy Sheet

17-06 Mechanical Properties for A206.0 Sand Castings

17-07 Stress Corrosion Cracking Data for 7136 Aluminum Alloy Extrusions

17-08Addition of Compression and Compression Tangent Modulus Stress-Strain Curves for 2099-T86

Plate

17-09 Fatigue Curves for 2099-T83 Extrusion

17-10 Fatigue Curve for 2099-T81 Extrusion

17-11 Fatigue Curve for 2026-T3511 Extrusion

17-12 Fatigue Curve for 2624-T351 Plate

17-13 Update of Modulus for 2297-T87 Plate

17-14 Physical Properties for 2099-T86 Aluminum Alloy



17-17 Stress-Strain Curves for 2026-T3511 Aluminum Alloy Extrusions

17-18 Stabilization of AMS-QQ-A-225/4 for 2014 Aluminum Alloy Bar, Rod, and Shapes

17-19 Addition of Transverse Bearing Strength Properties for Custom 465 Bar

17-20 Correction to Mechanical Properties for 7065-T7651 Aluminum Alloy Plate

17-21 Correction to Table 3.2.26.0(b) 2824-T3511 Extrusions

17-22 Stabilization of AMS 4962 for Ti-6Al-4V Investment Castings





17-23 Legacy Alloy Review Strategy – Near Term

17-24 Correction to Stress Ratio for 718 Alloy Figure 6.3.5.1.8(c)

17-25 Re-evaluation of Reduced Ratio Sample Size Determination

17-26 Guidelines for Generation and Use of A/B Allowables for Castings

17-27 Add Requirement to Chapter 9 Fatigue Correlative Information

17-28 Consideration of Origin in Multiple Regression Analysis for Joint Allowables

17-29Replacement of T90 Yield Curve with a Multiple-Regression Typical Yield Curve for Joint

Allowables

17-30 Revision of Table Format for Joint Allowables

17-31 Sunset Shear Strength Rule Criteria Addition

17-32 Edit Table 8.1.5.1

17-33 Alternative Fitting Function for Effect of Temperature Data

Final Initial

03-14 MTG 1Review of Currency of Existing Database

on Legacy AlloysContinue

Recommended to go ahead and do analysis if data are not received after 5 years. Consider

combining data from multiple suppliers if able to use non-regression for individual

thickness ranges (as Weibull censoring would handle upper tail scatter)

04-21 FTG 8 Fastener Tables of Sunset Review Interest Continue On hold. Table 8.1.4.2(j) was removed from the 'To Be Confirmed' list.

07-17 GTG ETWG 9Development of Design Properties for

Friction Stir Welds

Closed with no

action

This agenda item serves as a good example of multiple variables in analysis. AMS

Committee D has asked if there is industry interest in the related draft AMS specification

for 2024-T3 FSW. No interest identified.

08-23 FTG 8Sunset Review of Table 8.1.3.2.2(c),

NAS1921CContinue Waiting on confirmatory data from Arconic.

09-13 FTG 8Sunset Review of Table 8.1.3.2.3(a),

MS21140Continue Waiting on additional shear data.

09-16 GTG WWG 8 Review of Section 8.2 Metallurgical Joints Continue A final agenda item will be presented in GTG for fall meeting.

10-13 MTG ASG 2 Wrought Steels S-Basis Summary Continue Same as Item 03-14.

10-14 MTG 3Wrought Aluminum Alloys with S-Basis

MinimumsContinue Same as Item 03-14.

10-15 MTG 3Mechanical Properties for Aluminum

Alloy Forgings Continue Same as Item 03-14.

10-17 MTG 3Re-evaluate Legacy Alloy Stress-Strain

Curves in Chapter 3Continue

Low priority item. Have some figures from Boeing that need to be digitized. Would like

current stress-strain data on legacy alloys in template form.

10-25 GTG-F FTG 9Fastener Installation Parameters for Joint

Tension AllowablesContinue Two Boeing presentations were given. They will be included in the minutes.

11-05 MTG 1 AMS Coordination Continue

Next meeting is in Dayton, OH in April. Periodic testing will be discussed in the

Coordination Committee. Updated status of specifications of interest to MMPDS will be

included in final minutes.

SORTED BY ITEM NUMBER

30th MMPDS Coordination Meeting

Item NoResponsible Group

Chpt Title 30th Meeting DescriptionAction

AGENDA ITEM SUMMARY

Final Initial





AGENDA ITEM SUMMARY

11-15 MTG 2Division of Low Alloy Steel Table

2.3.1.0(g2) Continue

Correct footnote b - 'at desired tempering temperature'. Go back and check what product

form was involved for derived properties for each alloy. Continue item, breaking out

tables per alloy as consistent with MMPDS (attachment A). Including other tables in that

section. Further split tables to identify which properties for which specifications

(consider strength and thickness range.)

11-38 FTG 8

Sunset Review of Flush Head, Mechanical

Lock Spindle Blind Rivet Table

8.1.3.2.2(e) NAS 1921 M

Continue Data are expected by Fall. If received in time, an agenda item will be prepared.

11-43 FTG 8Supporting Data and Basis Identification

for Table 8.1.2(b)Continue M. Tefend is reviewing archives to determine test specifications.

12-105 GTG-F FTG 9Modification to the Sunset Criteria

ProceduresOn Hold Pending other sunset table reviews

12-16 MTGASG/

MATSSG2

Footnote for Steel When Test Specimen is

Not From Full ThicknessContinue Continue to get information from suppliers.

12-17 MTG MATSSG 6Footnote for Non-Ferrous Alloys Test

Specimen When Not From Full ThicknessContinue On hold

12-44 MTG 5Design Allowable Properties for Ti-3Al-

2.5V TubingContinue

Data are requested per AMS 4942, AMS 4945, and AMS 4946 for baseline to use with

orbital weld data

12-45 MTG 2 21-6-9 Tubing Continue Data are requested for AMS5561 tubing, and AMS5595 sheet & plate

12-50 GTG-F FTG 9Evaluation of new Regression and

Confidence Models for Lap Joint TestsContinue

On hold. Open new GTG item to look at regression and T90 analysis that includes origin.

(New item 17-28)

12-52 GTG-F FTG 9 Fastener Minimum t/D Requirements Continue Approved in FTG. Will be presented at GTG for final approval in fall.

12-89 GTG PSG 9Target Materials for Propulsion

ApplicationsContinue

Looking for data on various materials. Consider posting request for data on public

MMPDS web site. Table will be updated and included in minutes.

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Final Initial





AGENDA ITEM SUMMARY

13-32 MTGASG/MAT

SSG3

Bearing Strength Reduction for Edgewise

Orientation from Extruded BarContinue

Available data is analyzed and included in appropriate alloy tables. Would like to have

data from other suppliers before determining knock-down factors that can be used where

other orientation is unknown.

13-34 MTG 5Addition of AMS 4919 Ti-6-2-4-2 Plate

PropertiesContinue Data are needed.

13-35 MTG 6

Upgrade S-Basis to A- and B-Basis for

718 Bar Nickel-Base Alloys per AMS

5962

ContinueJ. Bennet has concern about consistency of through-thickness properties and, therefore,

wording of footnote. Pass on to MATSSG to reasses footnote.

13-43 MTG 3Addition of ST Bearing Properties for

7085-T7451 PlateContinue Waiting on data.

13-48 MTGAdd Cross-Sectional Area or Circle Size

Information to Extruded Alloy Tables

Approved and

Closed

Work with SAE AMS and data supplier to see if cross-sectional area in AMS 4331 should

be revised to conform with range of available data for A/B or if additional data can be

supplied for analysis of A/B.

13-50 GTG 9 ASTM Coordination ContinueASTM E238 will be published soon with updates including orientations for round product

and fracture modes.

14-13 GTG MATSSG 9Recommended Test Orientations and Test

Plane for Round ProductContinue

Continue to fall meeting to guarantee permission from ASTM to include figures in

MMPDS. No disapproval on proposed text for MMPDS.

14-19 GTG 9 Inclusion of Kisi Fracture Toughness Data Continue Waiting for ASTM progress

14-21 GTG WWG 9Update of Section 9.2.4.8 Fusion Welded

Joints to Clarify Method and BasisContinue Waiting on additional data.

14-24 MTG4 thru

7

Identification of Stress-Strain Curves

Which Have Been Evaluated for 2-Shape

Factor for Chapters 4-7

Continue Low priority item. No effort on this item.

14-28 FTG 8

Sunset Review of Table 8.1.4.2(i),

LGPL2SC-V Pin, 3SLC-C Collar in Clad

7075-T6

Continue Test data should be available by fall.

Final Initial





AGENDA ITEM SUMMARY

14-29 FTG 8

Sunset Review of Table 8.1.4.2(j),

LGPL2SC-V Pin, 3SLC-C Collar in Clad

2024-T3

Closed with no

actionNo Sunset Confirmatory Activities will be performed.

14-55 GTG 9Investigation of Fitting Functions for

Design Applications

Closed with no

actionOpen new item Alternative Fitting Function for Effect of Temperature Data

14-61 GTG PSG 9 Update Creep Guidelines Continue Agenda item for update to Chapter 1 on creep (Section 1.4.8.2.1, 1.4.8.2.2, 1.4.8.2.3)

14-62 GTG 9Evaluate Inclusion of other Fracture

Toughness Data (JIC, KJIC)Continue

Jay Bennet will send comments to Preston McGill and Sam Cordner (NASA-Marshall).

S. Thompson advised they work with Rick Link (involved in ASTM). Requesting final

input to Battelle by June 15th, following ASTM meeting in May. Sample size was briefly

discussed. Agreed that heats and lots be revised to 3. Discussed sample size of 15

(instead of 30) as we are doing typical values instead of minimums and it is about twice

as expensive as plane strain to test. (A T99 is determined for plane strain for spec min.)

Or should it be 30, same as plane strain fracture toughness, for consistancy. No final

decision on number of specimens (either 15 or 30).

14-66 MTG 2Addition of 15-5PH Sheet S-Basis per

AMS 5862 for H1025 Condition Continue Waiting on data.

14-67 MTG 3Addition of 3-6 Inch Range for 7075-

T73X Bar and Rod per AMS 4124Continue Waiting on data.

15-12 GTG MATSSG 9 Bearing Failure Modes Continue

Finalize in fall after publication of ASTM E238 with fracture modes. Request permission

to include figure from ASTM. Revise text in agenda from "Failure modes" to "Fracture

Modes" for consistency with ASTM wording.

15-13 MTG MATSSG 9Clarification of Shear Orientation for

Legacy AlloysContinue

Update shear orientations for 2013, Table 3.2.1.0(b) from L to T-L and from T to L-T.

Noted per ASTM B831 (slotted). Add test method ASTM B769 for 7050 in Table

3.7.5.0(b1). Regarding titanium alloy Ti-4.5Al-3V-2Fe-2Mo, NKK is now JFE. Akiko

will help identify contact to determine test orientations.

Final Initial





AGENDA ITEM SUMMARY

15-17 GTG FTG 9Revision of Acceptance Test for 50%

Censored Normal Method

Approved and

Closed

Updated k99cens and k90cens values were approved and have been incorporated in

FastenerCalc and MIDAS tools.

15-19 GTG-F FTG 9Verification of Secondary Modulus

Methods for FastenersContinue

Review MIL-HDBK-5 Item 75-18 for information on current yield criteria. Editorial

correct to include reference to primary and secondary modulus.

15-30 MTG 3Precision Modulus as Function of Test

Location on Heavy Gauge Plate

Closed, include

in Minutes

Will show final version of text and figure in minutes for informational use. Check on

thickness of 2050 plate (is it outside range in property table?).

15-33 GTG ASG/ GSG 8Update Design Reference for Section 8.3

BearingsContinue

S. Thompson suggesed for bearing, we replace MIL-STD-1599 with MIL-HDBK-1599

and not include the other references shown in agenda. This will be proposed for Fall

unless objections are sent to Battelle. B. Vogel and B. Thomas will continue to work on

Rope section and provide proposed update for Fall agenda. (Input is requested by July 1)

15-34 GTG 9 Stress-Strain Curve Extension Continue

Work with F. Bron to prepare agenda for fall meeting. Current method will have to be

retained for some materials. The big question is how to determine which method is

appropriate. Suggestions are requested.

15-36 GTG 9Modification of Indirect Analysis

EquationContinue

Continue with simulation to evaluate difference in COV between the tensile and

secondary property and propsed revised equation.

15-37 GTG 9Guidelines for Strain-Rate Sensitive

MaterialsContinue

Discuss in ASG & MATSSG for Fall. Comments: G. Bray noted that the rate will be too

slow for lot release, would limit ability to do legacy analysis. S. Thompson is finding that

in small populations, YS is combinable but US may differ. E. Heckman suggested rate

info be submitted with properties, to be kept for information. R. Rice suggested a table in

MMPDS to identfy strain rate sensitivity alloys. Action: R. Rice will present a draft of a

table at the Fall meeting.

15-38 GTG 9

Reevaluation of Degrees of Freedom

Calculation for Regression with Effect of

Temperature

ContinueR. Rice will continue with simulations on a revised method to construct effect of

temperature curves. Simulations will include small sample sizes.

Final Initial





AGENDA ITEM SUMMARY

15-39 GTG PSG 9 Austenitic Stainless Steel Fatigue DataClosed with no

actionUnable to determine pedigree of data.

15-40 GTGASG/

MATSSG9

Guidelines for When Specimens Are Not

From Full ThicknessContinue

Look at real examples for specific materials. B. Vogel thinks he can propose specific

verbiage. Perhaps need some additional verbiage in intro sections. Ad hoc team E.

Heckman, A. Midha, and other MATSSG people.

15-42 MTG 3Casting Allowables for 15-5PH and 17-

4PH steelContinue Testing is underway.

15-45 GTG MATSSG 9

Requirement of Additional Information on

Specimen Shapes for Forgings,

Extrusions, and Castings

Continue Was not discussed.

15-46 GTG MATSSG 9Cross-Sectional Information Requirement

for ExtrusionsContinue Still being discussed with Extrusion Working Group. EWG will give presentation in fall.

15-49 GTG 1Revision of B-basis Based on Reduction

of A-basis

Approved and

Closed

Grammatical correction to 1.4.1.5 (blue text) "but if individ.. Do drift down…

specifications as THEY ARE for the A-basis values."

15-51 GTG

ASG/

MATSSG/

GSG

9Periodic Testing of Materials for Derived

PropertiesContinue Discuss with Item 17-23. Will be discussed at AMS meeting in April.

15-53a MTG 3Mechanical Properties for 7099- T7451

Aluminum Alloy PlateContinue Derived property analysis approved. Final agenda in fall for complete section.

15-53b MTG 3Mechanical Properties for 7099- T7651

Aluminum Alloy PlateContinue

Derived property analysis approved with exception to reduce BYS 1.5 LT B-basis from 1 -

2 in., same as 2 - 3 in. Final agenda in fall for complete section.

16-02 GTG 9Updates to Strain Departure Methods for

Stress-Strain Curve AnalysesContinue An agenda will be prepared for the Fall meeting

Final Initial





AGENDA ITEM SUMMARY

16-03 MTG 3Modulus and Stress-Strain Curves for

2050-T852 Aluminum Alloy Die ForgingContinue

Change thickness range from 2 - 10 in. to 4 - 10 in. (to match actual range). Require at

least 6 tests for each orientation (now have only 4), preferably more due to the large

thickness range.

16-10 MTG ASG 3Legacy Alloy 7075-T6 Indirect Properties

Update Continue ASG will post a summary of current effort.

16-12 FTGIdentifying Basis of Fastener Shear

Strength on Remaining TablesContinue Waiting on data.

16-13 FTG 8Corrections to Table 8.1.3.2.2(c) NAS

1921CContinue Pending approval of Item 08-23.

16-14 GTG ASG 1Shear and Bearing Test Orientations in

Mechanical Property Tables

Approved and

ClosedS. Fantle to supply figures to Battelle.

16-15 GTG ETWG 9 Emerging Materials Continue

See ETWG presentation slides for FAA and SAE updates, and use of equivalency test for

AM. S. Thompson, AFRL, will give a presentation at the Fall meeting on what AWS

D20 is doing. J. Rubadue or others will give a presentation on AMS AM specifications.

Have someone (Gorelik) show the Path Forward from America Makes.

16-16 GTG FatWG 1 Fatigue in MMPDS

Approved and

Closed with

changes

Discussed in GTG. Revise references to Ktn to Kt based on net section.

16-20 GTG 1Equivalency Testing Assuming Change in

Process (From Item 11-40)Continue

Text and content was approved. Desire to have smaller section in Chapter 1 and put bulk

in an Appendix. Use 1st paragraph as new section in 1.10. Put entire proposal (including

1st paragraph) in a new appendix. Show final in Fall agenda.

16-22 MTG multiIdentification of Forging Types for Tables

with A- and B-basis Continue No effort.

16-23 MTG PSG 6

Re-evaluate Item 10-08 for Effect of

Temperature Curve vs Specification

Minimums

Continue Pending approval of new method in Item 15-38, as this was the method used.

Final Initial





AGENDA ITEM SUMMARY

16-24 GTG 9Guidelines for Modulus When Average

Value is InsufficientContinue

Discussed what COV would make sense. Strawman proposal for fall meeting using 3%

COV and +/- 2 std. deviations.

16-25 MTG 6Extension of 718 Bar Gage Range for

AMS 5662 and AMS 5663 Continue

Analysis presented 29th meeting. Need to resolve questions on size/response to heat treat

and note if lot release data was from excised samples.

16-27 MTG 3Expansion of 2195-T8 Design Allowable

PropertiesContinue Analysis presented in 29th meeting. Waiting on Fcy data in 45 degree.

16-29 GTG ASG 1Review of Section 1.4.7 Bearing

PropertiesContinue Incorporate ASG proposed revision to Section 1.4.7 in agenda item for fall meeting

16-30 MTG 2AM-355 Stainless Steel in SCT850

ConditionContinue

Investigate the specification to see if SCT850 was truly superceded by SCT1000. Check

to see if anyone is really using it. Allegheny Ludlum makes this alloy.

16-32 MTG 3Mechanical Properties for 7097-T7651

Aluminum Alloy PlateContinue

Approved what was proposed for derived properties. A final section will be presented in

fall.

16-34 GTG 9

Review Guideline on Stress-Strain

Submittal for Number of Curves per

Thickness Range

Continue

Propose add a footnote to request a minimum of two (or more) samples per thickness

break. Boeing suggested 5. H. Jesequel noted that for product with large number of

thickness, that would be too many, especially for the full range curves. MATSSG to

discuss in fall.

16-36 GTG-F FTG 9

Use of T99 as A-Basis When Higher than

Specification for Fastener Shear and

Tension

ContinuePrepare agenda for GTG in Fall meeting. A telecom will be held prior to meeting to

review failure modes of this table's design curve.

16-37 GTG-F FTG 1Chapter 1 Guidelines on Fastener Design

Allowable UsageContinue An agenda will be prepared for the Fall meeting

16-38 MTG 3Addition of 7140 Stress Corrosion

Cracking Information

Approved and

Closed

16-39 MTG 3 7010-T7451 Re-Analysis Continue Data in hand from Aleris and Constellium. Waiting on data from Arconic.

Final Initial





AGENDA ITEM SUMMARY

16-40 MTG 7Estimated Values in Table 7.3.2.0(c )

Copper Beryllium StripContinue Airframers are checking to see if this material is being used.

16-41 GTG 9Update Static Property Examples in

Section 9.8.1Continue

Prepare agenda item for fall meeting (revised name to indicate which example).

Examples will also to be used in MIDAS tool.

16-42 GTG ASG 9Guidelines for Analysis of Stress-Strain

Curves with Shape Factor Variance

Closed with no

action

17-01 MTG 3Expand range for 2024-T351 AMS 4120

to 8.0 inchesContinue

Check statistical basis for data from the QQ spec for the additional thickness range added

to AMS 4120.

17-02 MTG 3Revision of 7136 and 2029Alclad Stress-

Strain Curves

Approved and

Closed with

changes

Editorial change for 2029-T8 Fig 4 of agenda to round n values to 350 and 320

(significant digits) - I put the corrected Excel file in Figures Folder (13 at end of file)

17-03 MTG 2Stabilization of AMS6520 for 250 Grade

Maraging Steel Sheet and Plate

Approved and

ClosedCorrect in new Table 2.1.5 last viewed edition MMPDS-12 and 07-2017

17-04 MTG 3Addition of 45 Degree Properties for 2055-

T84 Aluminum Alloy Extrusions

Approved and

Closed

17-05 MTG 3Stabilization of Specifications for 2424

Bare and Clad Aluminum Alloy Sheet

Approved and

Closed

17-06 MTG 3Mechanical Properties for A206.0 Sand

CastingsContinue

Brief presentation given, as provided by AFS. Full package received. An agenda will be

presented at the fall meeting.

17-07 MTG 3Stress Corrosion Cracking Data for 7136

Aluminum Alloy ExtrusionsContinue

Correct Table 3.1.2.3.1(c), remove 2nd and 4th row, also add ratings table. More data

will be submitted for a fall agenda.

Final Initial





AGENDA ITEM SUMMARY

17-08 MTG 3

Addition of Compression and

Compression Tangent Modulus Stress-

Strain Curves for 2099-T86 Plate

Approved and

Closed

17-09 MTG 3 Fatigue Curves for 2099-T83 Extrusion Continue Data in hand.

17-10 MTG 4 Fatigue Curve for 2099-T81 Extrusion Continue Data in hand.

17-11 MTG 5 Fatigue Curve for 2026-T3511 Extrusion Continue Data in hand.

17-12 MTG 6 Fatigue Curve for 2624-T351 Plate Continue Data in hand.

17-13 MTG 3 Update of Modulus for 2297-T87 PlateApproved and

Closed

17-14 MTG 3Physical Properties for 2099-T86

Aluminum Alloy

Approved and

Closed


Aluminum Alloy

Approved and

Closed


Aluminum Alloy

Approved and

Closed

17-17 MTG 3Stress-Strain Curves for 2026-T3511

Aluminum Alloy Extrusions

Approved and

Closed

17-18 MTG 3

Stabilization of AMS-QQ-A-225/4 for

2014 Aluminum Alloy Bar, Rod, and

Shapes

Approved and

Closed

Correction to agenda, specification should be AMS-QQ-A-225/4 through out agenda

item.

Final Initial





AGENDA ITEM SUMMARY

17-19 MTG 2Addition of Transverse Bearing Strength

Properties for Custom 465 BarContinue

Should apply to both H950 and H1000. Boeing will help define necessary orientations.

Carpenter will try to have testing done, if not they can supply material for someone else to

do testing.

17-20 MTG 3Correction to Mechanical Properties for

7065-T7651 Aluminum Alloy Plate

Approved and

ClosedCorrection is included in MMPDS-12

17-21 MTG 3Correction to Table 3.2.26.0(b) 2824-

T3511 Extrusions

Approved and


17-22 MTG 5Stabilization of AMS 4962 for Ti-6Al-4V

Investment Castings

Approved and

ClosedCorrect to last shown in MMPDS-12

17-23 GTG 9Legacy Alloy Review Strategy – Near

TermContinue

Ad hoc group formed to coordinate between ASG and MATSSG to discuss this and Item

15-51. Group consists of R. Goode, G. Bray, R. Nash, V. Dangerfield, M. Hahn, A.

Inoue, C. Heine, M. Freisthler, and J. Rubadue. Recommendation to be prepared for next

meeting agenda.

17-24 MTG 6Correction to Stress-Ratio for 718 Alloy

Figure 6.3.5.1.8(c)

Approved and


17-25 GTG 9Re-evaluation of Reduced Ratio Sample

Size DeterminationNew

Current guidelines determine ratio by average of lot properties and use the number of lots

for 'n'. This new item is to evaluate using the number of pairs for 'n' instead of number of

lots. This will result in smaller 't', but may have larger scatter. Prepare agenda clarifing

item with examples to show how this may increase and decrease results.

17-26 GTG ASG 9Guidelines for Generation and Use of A/B

Allowables for CastingsNew

ASG and MTG discussed this briefly this meeting. D. Hall, L. Steele, R. Goode. Others

may be added. May decide to include MATSSG.

17-27 FatWG 9Add Requirement to Chapter 9 Fatigue

Correlative InformationNew

Prepare agenda to add a requirement to identify the material specification for the fatigue

data. This will be included in correlative information.

Final Initial





AGENDA ITEM SUMMARY

17-28 GTG FTG 9Consideration of Origin in Multiple

Regression Analysis for Joint AllowablesNew See Item 12-50 for reference.

17-29 GTG-F FTG 9

Replacement of T90 Yield Curve with a

Multiple-Regression Typical Yield Curve

for Joint Allowables

New

17-30 GTG-F FTG 9Revision of Table Format for Joint

AllowablesNew Consider revising table to clarify shear strength basis

17-31 FTG 9Sunset Shear Strength Rule Criteria

AdditionNew If the largest diameter fails, consider dropping this diameter and keeping other diameters.

17-32 GTG-F FTG 8 Edit Table 8.1.5.1 New Related to Item 12-52. An agenda will be presented in GTG at Fall meeting.

17-33 GTG 9Alternative Fitting Function for Effect of

Temperature DataNew

D. Hall, Honeywell, has suggested a possible new fitting function for representing effect

of temperature data do not show monotonically decreasing trends with increasing

thickness. This model must be evaluated with some representative datasets.

17-NIN MTG 36061 Plate T6X up to 12 inches, expand

rangeContinue

Check with Constellium and Arconic about very thick product. See if the tempers are

registered to that thickness and if suppliers are willing to register temper, revise AMS,

and submit data to Battelle for MMPDS.

17-NIN GTG PSG 9 Isochronal Stress Strain CurvesClosed with no

action

17-NIN MTG 3Inclusion of Properties for AMS 4221,

2124-T8151 PlateContinue Request data

17-NIN GTG ETWGNorsk Titanium RPD™ Ti-6Al-4V

Material.not presented P. Sodouri was unable to attend. The presentation will be given in fall during ETWG.

Final Initial





AGENDA ITEM SUMMARY

17-NIN GTG Air Force Structures Bulletin UpdateClosed with no

action

A copy of the presentation will be posted on MMPDS member SharePoint. Plan is final

publicaion in Mid-April 2017.

17-NIN GTG Stress-Strain Curve Working Group New

This new group (named SSCWG) would meet by telecoms between meeting; E.

Hernandez-Otero (lead), P. Vanderpol, R. Brazil, J. Rossi, R. Rice, C. Heine, P.

Wheelock, and R. Reinmuller. A separate time will not be scheduled for MMPDS

meetings.

17-New MTG PSGSupplemental Data for Ti-6-2-4-2

"Product Form" New R. Rice will determine what data is on hand.

17-New FatWG Review Section 9.6.1 New Goal to take an initial look and determine if there is a need to update.

17-New MTGR-curve for Alclad 2029-T8 Sheet and

PlateNew Arconic has data to submit

17-New MTGR-curve for 2624-T351 and T39 Sheet and

PlateNew Arconic has data to submit

17-New MTG FCG Analysis for 2397-T87 Plate New Arconic has data to submit

17-New MTG Presentation (requested) New

Requested Special Presentation to give more information on how casting specifications

work. Purpose and use of separately cast bars, integral castings. Minimum properties for

designated and non-designated areas.

17-New GTG ETWG Presentation (requested) New Requested Special Presentation to discuss how AM specs work together

17-New GTGClarification of ISG/MMPDS Numbering

SystemNew Prepare item to clarify distinction between ISG items and MMPDS core items

17-New GTG SSWGGuidelines for Rejection of Stress-Strain

Curves from Parametric AnalysisNew

Need additional guidelines on when stress-strain curves should be rejected from Ramberg-

Osgood and/or Bron analysis, e.g. non-monotonically increasing stresses up to the yield

point, and substantial (TBD) deviations from linear elastic response before reaching

proportional limit.

17-New MTGRe-analysis of ATI 425 Sheet Typical

Stress-Strain CurvesNew Reanalysis of curves in Item 16-18 to consider non monotonically increasing stress-strain.

Fri, Mar 31

Last Name First Name Company ISG GSG

Joint GSG/ ISG MTSSG ASG GTG ETWG MTG WWG FTG PSG FatWG GCC

Anderson Neil Boeing √ √

Bakuckas John FAA √ √ √ √ √ √ √

Bennett Jay NASA Johnson Space Center √ √ √ √ √ √ √ √

Bourges Laurent LISI Aerospace √

Bray Gary Arconic √ √ √ √ √ √ √ √

Butler Nathan NASA √ √ √ √ √ √ √ √

Cordner Samuel NASA √ √ √ √ √ √ √ √

Daley Nancy Aerojet Rocketdyne √ √ √ √ √ √

Dangerfield Vic Universal Alloy Corporation √ √ √ √ √ √ √

Dannecker Marina Blue Origin √ √ √ √ √ √ √ √

Edno Pereria Luiz Embraer s.a √ √ √ √ √ √ √ √

Fantle Steven Boeing √ √ √ √ √ √ √

Flansburg Lori Lockheed Martin √ √ √ √ √ √ √ √

Freisthler Mark FAA √ √ √ √ √ √

Goode Randy Lockheed Martin √ √ √ √ √ √ √

Hahn Michael Northrop Grumman √ √ √ √ √ √ √ √ √

Hall Doug Honeywell Aerospace √ √ √ √ √ √ √ √ √

Hall Gary Bell Helicopter Textron √ √ √ √ √ √

Haynes Noel UTC Aerospace Systems √ √ √ √ √ √ √ √

Heine Christoph Airbus Operations Gmbh √ √ √ √ √ √ √

Hernandez-Otero Edwin Boeing √ √ √ √ √ √ √ √ √

Inoue Akiko Mitsubishi Heavy Industries, LTD. √ √ √ √ √ √ √ √ √

Jang Younghwan Korea Aerospance Industries √ √ √ √ √ √

Jenkel Steven Pratt & Whitney √ √ √ √ √ √

Jesequel Hailey Universal Alloy Corporation √ √ √ √ √ √ √ √ √

Jones Marshall NAVAIR √ √ √ √ √ √ √

Lass Amber NAVAIR √ √ √ √ √ √ √ √

30th MMPDS Coordination Meeting MinutesMeeting Attendance

Wed, Mar 29 Thur, Mar 30Tues, Mar 28

Fri, Mar 31

Last Name First Name Company ISG GSG

Joint GSG/ ISG MTSSG ASG GTG ETWG MTG WWG FTG PSG FatWG GCC

30th MMPDS Coordination Meeting MinutesMeeting Attendance

Wed, Mar 29 Thur, Mar 30Tues, Mar 28

Layton Joth UTAS Aerostructures √ √ √ √ √ √ √ √

Midha Arvind Carpenter Technology √ √ √

Mies Deborah Granta Design, Ltd. √ √ √ √

Nash Roy Kaiser Aluminum √ √ √ √ √ √

Niedzinski Michael Constellium √ √ √

Oshino Hironobu IHI Corporation √ √ √ √ √ √ √ √ √

Padilla Kyle LISI Aerospace √

Park Sang-Hyuck RIST √ √ √

Reed Jonathan Boeing √ √ √ √ √ √ √ √

Reeves Dan Blue Origin √ √ √ √

Rice Rich Battelle √ √ √ √ √ √ √

Robertson Jessica Haynes International √ √ √ √ √ √ √ √ √

Rossi James Westmoreland Mechanical Testing & Research √ √ √ √ √ √ √ √

Rubadue Jana Battelle √ √ √ √ √ √ √ √

Steele Leslie UTC Aerospaces Systems √ √ √ √ √ √ √ √ √

Steevens Andrew Boeing √ √ √ √ √ √ √ √

Stonaker Kevin FAA √ √ √ √ √ √

Sutton Adam Lockheed Martin √ √ √ √ √ √ √ √

Takahashi Kotomi IHI Corporation √ √ √ √ √ √ √ √ √

Tefend Matt Battelle √ √ √ √

Thompson Steven AFRL √ √ √ √ √ √ √ √ √

Vanderpol Paul UTC Aerospace Systems √ √ √ √ √ √ √ √

Vogel Bret Textron Aviation √ √ √ √ √ √ √

Walker-Heckman Elizabeth Boeing √ √ √ √ √ √ √ √

Wheelock Paul Rolls-Royce Corporation √ √ √ √ √ √ √ √ √

mmpds minutes cover...jan 30, 2019 · 12-50 gtg-f ftg 9 evaluation of new regression and...

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