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Minutes of the 29th MMPDS Coordination Meeting
Held in:
Long Beach, CA September 19-22, 2016
Compiled by: Prepared for:
Battelle FAA William J. Hughes Technical
505 King Avenue Atlantic City, NJ 08405
Columbus, OH 43201-2693
Copyright 2016 Battelle Memorial Institute. All rights reserved. Unauthorized duplication or
distribution may violate the Copyright Laws of the United States and of other jurisdictions.
I. Introduction of Attendees A list of 29th Coordination Meeting attendees, indicating the meetings they attended, has been incorporated into this document.
II. Chairman’s Remarks – Jim Kabbara, FAA
I thank all those who participated in the 29th MMPDS Coordination Meeting held in Queen Mary, Long Beach California on the 20th of September 2016. I hope those who stayed at the Queen Mary enjoyed their “ghostly experience”. My nine years old daughter, when she heard that I going to be at the Queen Mary told be me to be careful, as the ship is haunted. My special appreciation to Battelle for yet another fantastic job of organizing and managing the MMPDS activities.
I would like to personally welcome the new participant, Blue Origin, who recently joined the MMPDS. Their participation is a testimony to the wide world importance of the MMPDS as the major depository source of material data for designing and analyzing aerospace structures.
Again, thank you for attending the 29th MMPDS Coordination Meeting and for your dedication for maintaining MMPDS as the premier source in the world for metallic material properties used in the design of aerospace structures. I look forward to seeing in the next upcoming MMPDS Coordination Meeting.
Thank you,
Jim Kabbara
III. Approval of the 28th MMPDS Meeting Minutes
The 28th MMPDS Coordination Meeting Minutes were approved with the changes to Item 16-08 for 718 elevated temperature allowable properties and to the Closed Items presented in the following section.
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Corrections to 28th Meeting Minutes
Item 16-08 Addition of Elevated Temperature A- and B-basis for 718 Alloy. Correction: Product thickness range in table was shown as 0.250-0.500 inches and should be 0.250-5.000 inches. Footnote b was also corrected to read; The rounded T99 for Ftu(L) is 148 ksi, for Ftu(T) is 150 ksi and for Fty(T) is 128 ksi.
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Item No Chapter Title Status
11-40 9 Guidance on Emerging Technologies Closed w/ no action12-01 9 Weibull Sequential Censoring Revision Closed w/ no action
12-103 3Addition of Compression, Shear, and Bearing Properties for Expanded
Thickness Range on Alloy 2196-T8511 Aluminum Alloy ExtrusionClosed w/ no action
13-23 9 Definition of Process-Sensitive Material Closed w/ no action14-39 9 Clarifications and Update to Fatigue Section 9.6.1 Closed w/ no action
14-45 9 Non-Standard Test Locations for Extruded Profiles Approved and closed with changes
14-48 9 Proposed Modifications to Fatigue Analysis Guidelines Approved and Closed
14-63 9Addition of Elevated Temperature To Mechanical Property Table
when Included as a Specification Minimum for Lot ReleaseClosed w/ no action
15-06 1,9 Clarification of Orientation for Shear and Bearing Properties Approved and Closed
15-07 9 Inclusion of Stress-Strain Parameters in Mechanical Property Tables Closed w/ no action
15-16 9 One-Sided k-Factors for Fatigue Approved and Closed
15-27 3 Addition of 2395-T84 Aluminum Alloy ExtrusionApproved pending AMS Spec.
Publication
15-28 6 Reevaluation of Inconel 718 Sheet Room Temperature Fatigue Data Approved and Closed
15-29 9 Identifying Basis of Fastener Shear Strength on Remaining Tables 60 Day-Approved and Closed
15-30 3 Precision Modulus as Function of Test Location on Heavy Gauge Plate Closed w/ no action
15-41 9 Review of Table 9.2.3.2(b) for Minimum ST Thickness Approved and Closed
15-43 3E357-T6 Sand Casting Bearing Ultimate e/D 1.5 Properties and Non-
Designated Bearing Ultimate Properties Closed w/ no action
15-44 3 Addition of Clad 2029-T8 Tensile Full Range Stress Strain Curves Approved and Closed
15-48 9Identify Derived Property Test Specimens are Lower than Calculated A-
Basis Closed w/ no action
15-50 9 Clarification of CTE Figures Approved and Closed 15-54 2 Restrictions on Low Alloy Steel Effect of Temperature Curves Approved and Closed
15-55 2MLX19 Bearing Ultimate e/D 2.0 Design Allowable Property
Minimums60 Day-Approved and Closed
16-01 9 Calculation of Modulus for Stress-Strain Curve Analysis Approved and Closed
16-06 5 Modification to Elastic Modulus for Titanium 6Al-4V Sheet and Plate Approved and Closed
16-07 3Correction to the Mechanical Properties for 2029 Clad Aluminum
PlateApproved and Closed
16-08 6 Addition of Elevated Temperature A- and B-Basis for 718 Alloy Approved and closed with changes
16-09 3 Update of Table 3.1.3.4(a) Weldability of Wrought Aluminum Alloys Approved and Closed
16-11 2 Elongation Properties for Table 2.2.1.0(b) AISI 1025 Carbon Steel Approved and Closed
CLOSED ITEMS
CORRECTED 28th MMPDS Coordination Meeting Minutes
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Item No Chapter Title Disposition New/Revised
13-26 9 Raw Stress-Strain Data Interpretation for Full Range Close w/ no action NA14-11 9 Changes in Strain Rate for Full Range Stress-Strain Curves Approved and closed w/ change Revised14-40 3 Update of Table 3.1.2 for Temper Designations Approved and closed w/ change Revised
14-51 9Incorporation of Sjodahl and Bi-Linear Regression Methods for
Fatigue AnalysisApproved and closed New
14-52 9 Incorporation of Akaike Evaluation for Fatigue Analysis Models Approved and Closed New
14-54 9 Data Requirements When Specimen Configurations Vary Approved and Closed Revised15-22 3 Mechanical Property Correction for 7010-T7451 Plate 60 Day Approval Revised
15-32 3Addition of ST Bearing for 7065-T7451 and T7651 Aluminum
Alloy Plate Close w/ no action NA
15-35 9 Expansion of Table 9.4.2 on Validating Design Properties Approved and closed Revised
15-47 9Identification of Derived Property Test Below A/B Allowables
in AnalysisApproved and Closed NA
16-NIN 9 Looking at (T99-A) Data for Aluminum Alloys Close w/ no action NA15-52 2 MLX19 Plane Strain Fracture Toughness and Crack Growth Approved and closed w/ change New16-04 3 Mechanical Properties for 7136-T73511 Extrusions 60 Day Approval with Changes New16-05 3 Mechanical Properties for 7136-T74511 Extrusions 60 Day Approval with Changes New
16-17 3Stabilization of AMS WW-T-700/6 for 6061 Seamless Drawn
Tubing60 Day Approval Revised
16-18 5Mechanical Properties for Single Melt ATI 425 Cold Rolled
Sheet per AMS 6949Approved and closed w/ change New
16-19 3Mechanical Properties for 2395-T84 Extrusion in 45 Degree
OrientationApproved and Closed New
16-21 Add Specification Identification to Fatigue Curves Approved and Closed NA16-26 3 Typical Stress-Strain Curves for 2397-T87 Plate Approved and closed w/ change New
16-28 9Formal Naming of 2 Shape Factor Model for Stress-Strain
BehaviorApproved and closed w/ change Revised
16-31 4Correction to A-Basis for 7075-T7352 Aluminum Alloy Hand
ForgingApproved and Closed Revised
16-33 9 Stress Corrosion Cracking Data Requirements Approved and Closed Revised
16-35 6Re-label Inconel Effect of Temperature Curves for 718 Figure
6.3.5.1.1(a) & (b)60 Day Approval Revised
15-NIN 9Test Specimen Improvement: Laminated Compression (ASTM
E9), Pin Bearing (ASTM E238) and Slotted Shear (ASTM B831)Close w/ no action NA
16-NIN 8 Linear Friction Welding Close w/ no action NA16-NIN Data Sharing Process from Honeywell Close w/ no action NA16-NIN 7 Continued Inclusion of Section 7.5 Aluminum Laminates Close w/ no action NA
16-NIN 3
Development of a new high strength/toughness/corrosion
resistance 7XXX plate alloy for aerospace applications in the 1-
6” thickness range
Close w/ no action NA
16-NIN 2 Load-Control Fatigue for MLX19 Close w/ no action NA
29th MMPDS Coordination Meeting
CLOSED AGENDA ITEMS
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16-01 Calculation of Modulus Stress-Strain Curve Analysis
16-02 Updates to Strain Depature Methods for Stress-Strain Curve Analyses
16-03 Modulus and Stress-Strain Curves for 2050-T852 Aluminum Alloy Die Forging
16-04 Mechanical Properties for 7136-T73511 Extrusions
16-05 Mechanical Properties for 7136-T74511 Extrusions
16-06 Modification to Elastic Modulus for Titanium 6Al-4V Sheet and Plate
16-07 Correction to the Mechanical Properties for 2029 Clad Aluminum Plate
16-08 Addition of Elevated Temperature A- and B-Basis for 718 Alloy
16-09 Update of Table 3.1.3.4(a) Weldability of Wrought Aluminum Alloys
16-10 Legacy Alloy 7075-T6 Indirect Properties Update
16-11 Elongation Properties for Table 2.2.1.0(b) AISI 1025 Carbon Steel
16-12 Identifying Basis of Fastener Shear Strength on Remaining Tables
16-13 Corrections to Table 8.1.3.2.2(c) NAS 1921C
16-14 Shear and Bearing Test Orientations in Mechanical Property Tables
16-15 Emerging Materials
16-16 Fatigue in MMPDS
16-17 Stabilization of AMS WW-T-700/6 for 6061 Seamless Drawn Tubing
16-18 Mechanical Properties for Single Melt ATI 425 Cold Rolled Sheet per AMS 6949
16-19 Mechanical Properties for 2395-T84 Extrusion in 45 Degree Orientation
16-20 Equivalency Testing Assuming Change in Process (From Item 11-40)
16-21 Add Specification Identification to Fatigue Curves
16-22 Identification of Forging Types for Tables with A- and B-basis
16-23 Re-evaluate Item 10-08 for Effect of Temperature Curve vs Specification Minimums
16-24 Guidelines for Modulus When Average Value is Insufficient
16-25 Extension of 718 Bar Gage Range for AMS 5662 and AMS 5663
16-26 Typcial Stress-Strain Curves for 2397-T87 Plate
16-27 Expansion of 2195-T8 Design Allowable Properties
16-28 Formal Naming of 2 Shape Factor Model for Stress-Strain Behavior
16-29 Review of Section 1.4.7 Bearing Properties
16-30 AM355 Stainless Steel in SCT850 Condition
16-31 Correction to A-Basis for 7075-T7352 Aluminum Alloy Hand Forging
16-32 Mechanical Properties for 7097-T7651 Aluminum Alloy Plate
16-33 Stress Corrosion Cracking Data Requirements
16-34 Review Guideline on Stress-Strain Submittal for Number of Curves per Thickness Range
16-35 Re-label Inconel Effect of Temperature Curves for 718 Figure 6.3.5.1.1(a) & (b)
16-36 Use of T99 as A-Basis When Higher than Specification for Fastner Shear and Tension
16-37 Chapter 1 Guidelines on Fastener Design Allowable Usage
16-38 Addition of 7140 Stress Corrosion Cracking Information
16-39 7010-T7451 Re-Analysis
16-40 Estimated Values in Table 7.3.2.0(c ) Copper Berylium Strip
16-41 Update Examples in Section 9.8.1
16-42 Guidelines for Analysis of Stress-Strain Curves with Shape Factor Variance
Item Numbers Assigned in 2016
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Final Initial
03-14 MTG 1Review of Currency of Existing Database
on Legacy AlloysContinued
The status of the top alloys was reviewed. Some data are available for a few alloys, but
missing data from all suppliers. Once sufficient data are received, they will be analyzed.
Slow getting the data.
04-21 FTG 8 Fastener Tables of Sunset Review Interest Continued This item is on hold until current Sunset tables are reviewed.
07-17 GTG ETWG 9Development of Design Properties for
Friction Stir WeldsContinued
The agenda and presentation(s) showing results of previous FSW effort will be included
in an agenda for discussion at the Spring meeting. An AMS specification for 2024 FSW is
currently being held in Aerospace Council.
08-23 FTG 8Sunset Review of Table 8.1.3.2.2(c),
NAS1921CContinued An agenda will be prepared for the next meeting pending k factor corrections.
09-13 FTG 8Sunset Review of Table 8.1.3.2.3(a),
MS21140Continued An agenda will be prepared for the next meeting pending k factor corrections.
09-16 GTG WWG 8 Review of Section 8.2 Metallurgical Joints ContinuedAn Agenda will be prepared for the next meeting including R. Reinmuller's edits and
corrections to tables.
10-13 MTG ASG 2 Wrought Steels S-Basis Summary ContinuedASG Members may pool some of their data. This item is a placeholder for request for
data.
10-14 MTG 3Wrought Aluminum Alloys with S-Basis
MinimumsContinued Data are needed.
10-15 MTG 3Mechanical Properties for Aluminum
Alloy Forgings Continued Waiting for a complete data set from all companies.
10-17 MTG 3Re-evaluate Legacy Alloy Stress-Strain
Curves in Chapter 3Continued Low Ranking. No effort on this item.
10-25 GTG-F FTG 9Fastener Installation Parameters for Joint
Tension AllowablesContinued Boeing is to supply data.
11-05 MTG 1 AMS Coordination Continued
An item is included in the Minutes summarizing discussions at the AMS meeting which
are of interest to MMPDS. The item also includes the status of draft specifications and
specifications in MMPDS that have been recently balloted.
11-15 MTG 2Division of Low Alloy Steel Table
2.3.1.0(g2) Continued Finalize and present table at Spring Meeting
11-38 FTG 8
Sunset Review of Flush Head, Mechanical
Lock Spindle Blind Rivet Table 8.1.3.2.2(e)
NAS 1921 M
Continued An agenda will be prepared for the next meeting pending k factor corrections.
29th MMPDS Coordination Meeting Minutes -FinalSORTED BY ITEM NUMBER
Item NoResponsible
Chpt MinutesTitle Disposi-tion
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Final Initial
29th MMPDS Coordination Meeting Minutes -FinalSORTED BY ITEM NUMBER
Item NoResponsible
Chpt MinutesTitle Disposi-tion
11-43 FTG 8Supporting Data and Basis Identification
for Table 8.1.2(b)Continued Testing is needed to support table. ISG is discussing how to fund testing.
12-16 MTGASG/
MATSSG2
Footnote for Steel When Test Specimen is
Not From Full ThicknessContinued
Following discussions on related GTG item, it was noted that material suppliers need to
show their testing used to indicate the effect of size on properties. See ASG notes (in
Working Group folder of SharePoint) for their comments.
12-17 MTG MATSSGFootnote for Non-Ferrous Alloys Test
Specimen When Not From Full ThicknessContinued Placeholder once steels are complete.
12-44 MTG 5Design Allowable Properties for Ti-3Al-
2.5V TubingContinued Waiting on baseline data.
12-45 MTG 2 21-6-9 Tubing Continued Waiting on data, JT was to submit.
12-50 GTG-F FTG 9Evaluation of new Regression and
Confidence Models for Lap Joint TestsContinued An agenda will be prepared for the Spring meeting.
12-52 GTG-F FTG 9 Fastener Minimum t/D Requirements Continued An agenda will be prepared for the Spring meeting.
12-89 GTG PSG 9Target Materials for Propulsion
ApplicationsContinued
Discussed use of casting data. Separately cast data is not usable for MMPDS. L.
Weihmuller has integrally cast A357, if it is of interest.
12-105 GTG-F FTG 9Modification to the Sunset Criteria
ProceduresOn Hold This item is on hold pending sunset review.
13-26 GTG 9Raw Stress-Strain Data Interpretation for
Full Range
Close w/ no
actionCovered in Item 16-02
13-32 MTGASG/MA
TSSG
Bearing Strength Reduction for Edgewise
Orientation from Extruded BarContinued Waiting on new alloy data
13-34 MTG 5Addition of AMS 4919 Ti-6-2-4-2 Plate
PropertiesContinued Waiting on data
13-35 MTG 6Upgrade S-Basis to A- and B-Basis for 718
Bar Nickel-Base Alloys per AMS 5962Continued Check to see if data were from excised samples, and need an additional footnote.
13-43 MTG 3Addition of ST Bearing Properties for
7085-T7451 PlateContinued Waiting on Data
~7~
Final Initial
29th MMPDS Coordination Meeting Minutes -FinalSORTED BY ITEM NUMBER
Item NoResponsible
Chpt MinutesTitle Disposi-tion
13-48 MTGAdd Cross-Sectional Area or Circle Size
Information to Extruded Alloy TablesContinued
Where known, the tables will be updated as editorial in MMPDS-12 and shown in the
minutes. The item will be continued to gather info on remaining tables.
13-50 GTG 9 ASTM Coordination Continued B. Young reported on ASTM E739 fatigue data for linearized data.
14-11 GTGASG/MA
TSSG9
Changes in Strain Rate for Full Range
Stress-Strain Curves
Approved
and closed w/
change
MATSSG agreed with proposal. ASG requested revision of "must" to "shall" in 2nd
paragraph of proposal; "Submitted for inclusion in MMPDS shall…". Following the
meeting, it was realized that Table 9.2.4 and Section 9.3.4.3 should be updated for
consistency. Those updates are shown in the minutes.
14-13 GTG MATSSG 9Recommended Test Orientations and Test
Plane for Round ProductContinued
ASTM is currently balloting inclusion of the orientations. G . Bray will present an
agenda at Spring meeting for proposal if ballot is approved.
14-19 GTG 9 Inclusion of Kisi Fracture Toughness Data On Hold This item is on hold.
14-21 GTG WWG 9Update of Section 9.2.4.8 Fusion Welded
Joints to Clarify Method and BasisContinued Some changes may be in R. Reinmuller's revision in Item 09-16.
14-24 MTG 4 thru 7
Identification of Stress-Strain Curves
Which Have Been Evaluated for 2-Shape
Factor for Chapters 4-7
Continued Low Ranking. 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
Continued Testing to be submitted for Spring meeting agenda.
14-29 FTG 8
Sunset Review of Table 8.1.4.2(j),
LGPL2SC-V Pin, 3SLC-C Collar in Clad 2024-
T3
Continued
14-40 GTG 3Update of Table 3.1.2 for Temper
Designations
Approved
and closed w/
change
Approved with additional information for stress relief temper … add "for example,
T7X51"
14-51 GTG 9Incorporation of Sjodahl and Bi-Linear
Regression Methods for Fatigue Analysis
Approved
and closedApproved as proposed in agenda.
14-52 GTG 9Incorporation of Akaike Evaluation for
Fatigue Analysis Models
Approved
and Closed
J. Goodman commented that the original version of Akaike requires everything to be
transformed the same way (e.g. log, which it is in this case). An alternative version is
available when multiple transformations are used. D. Hall asked if this could be used for
other types of analysis.
~8~
Final Initial
29th MMPDS Coordination Meeting Minutes -FinalSORTED BY ITEM NUMBER
Item NoResponsible
Chpt MinutesTitle Disposi-tion
14-54 GTG MATSSG 9Data Requirements When Specimen
Configurations Vary
Approved
and ClosedRevise Sections 1.4.6.2 and 9.2.3.3 as proposed.
14-55 GTG 9Investigation of Fitting Functions for
Design ApplicationsOn Hold No effort on this item due to low ranking from ballot.
14-61 GTG PSG 9 Update Creep Guidelines Continued This will be discussed at the next meeting.
14-62 GTG 9Evaluate Inclusion of other Fracture
Toughness Data (JIC, KJIC)Continued
Please review and send B. Young comments. B. Young will also forward to D. Wells for
review. An agenda will be presented at the next meeting.
14-66 MTG 2Addition of 15-5PH Sheet S-Basis per AMS
5862 for H1025 Condition Continued Waiting on Data
14-67 MTG 3Addition of 3-6 Inch Range for 7075-T73X
Bar and Rod per AMS 4124Continued Waiting on Data
15-12 GTG MATSSG 9 Bearing Failure Modes Continued
H. Jesequel, UAC, gave an update on ASTM E28.04 sub-committee. The ballot for
inclusion of a description of failure modes in ASTM E238 closes September 26. Once
approved, an agenda will be presented to include these in MMPDS.
15-13 MTG MATSSG 9Clarification of Shear Orientation for
Legacy AlloysContinued
15-17 GTG-F FTG 9Revision of Acceptance Test for 50%
Censored Normal MethodContinued
J. Goodman, Alcoa, gave a presentation on the k99 and k90 knock-down factors
proposed for revision of the 50% Censored Normal method. His presentation is included
and posted on the member SharePoint site. An agenda will be prepared for the Spring
meeting for discussion in GTG.
15-19 GTG-F FTG 9Verification of Secondary Modulus
Methods for FastenersContinued
15-22 MTG 3Mechanical Property Correction for 7010-
T7451 Plate
60 Day
Approval
Work with AMS to increase thickness range. Temper has been registered with the
Aluminum Association. Need to update table to 66 with footnote to T99. This change
should be done in MMPDS-12 and is shown for 60-Day approval. Analyze recent lot
release data for Spring meeting in Item 16-39. Alcoa will submit data also.
15-30 MTGPrecision Modulus as Function of Test
Location on Heavy Gauge PlateContinued
Propose a footnote for 2050 alloy only (not the 7XXX) to include the range in modulus
through thickness, noting it is single heat.
15-32 MTG 3Addition of ST Bearing for 7065-T7451
and T7651 Aluminum Alloy Plate
Close w/ no
action
15-33 GTGASG/GS
G8
Update Design Reference for Section 8.3
BearingsContinued Prepare agenda based on 28th meeting.
~9~
Final Initial
29th MMPDS Coordination Meeting Minutes -FinalSORTED BY ITEM NUMBER
Item NoResponsible
Chpt MinutesTitle Disposi-tion
15-34 GTG 9 Stress-Strain Curve Extension ContinuedF. Bron's presentation has been posted on SharePoint and is included in the minutes. An
agenda will be prepared for the spring meeting
15-35 GTG 9Expansion of Table 9.4.2 on Validating
Design Properties
Approved
and closedApproved as proposed in agenda.
15-36 GTG 9 Modification of Indirect Analysis Equation ContinuedContinue looking at more examples. Consider adding guideline to determine if the COV
difference is > x, then an adjustment is needed.
15-37 GTG 9Guidelines for Strain-Rate Sensitive
MaterialsContinued
B. Young reviewed the 28th agenda. R. Reinmuller suggested warnings may need to be
included in MMPDS if a material is strain rate sensitive. D. Hall suggested that
producers be required to identify if their material is strain-rate sensitive, by running at
range within ASTM. J. Rossi reviewed history on NADCAP removal of strain rates in their
requirements, their intention was that the AMS metals specs include the rates. S.
Thompson noted that unfortunately, AMS Committee G did not want to include the
rates above yield. Discussions was that it is not within our scope to require rates, but
we can require that material be run at 2 rates to determine if it is strain rate sensitive.
Agenda for spring will propose that the strain rate sensitivity be determined for MMPDS.
15-38 GTG 9
Reevaluation of Degrees of Freedom
Calculation for Regression with Effect of
Temperature
Continued Revised title to remove Fatigue Data. Currently applies only to effect of temperature.
15-39 GTG PSG 9 Austenitic Stainless Steel Fatigue Data Continued
Please let B. Young know if you have a contact at Argonne National Lab. They have the
information to determine the material specification for the data. J. Bennett mentioned
that we need to consider the amount of cold work that may be in the data.
15-40 GTGASG/MA
TSSG9
Guidelines for When Specimens Are Not
From Full ThicknessContinued
The Handout did not include S. Fantle' s latest mark-ups. His revised text is included in
the minutes. There were discussions on how the testing is done not at set size blocks,
but at various sizes. This would make it complex to include a thickness row as proposed.
Suppliers need to show if the material is sensitive to section thickness. Erin McDevitt
wants guidance rather than footnotes. Direction is requested on requirements to show
if a material is sensitive to size and the limits of the size.
15-42 MTG 3Casting Allowables for 15-5PH and 17-
4PH steelContinued Waiting on Data
~10~
Final Initial
29th MMPDS Coordination Meeting Minutes -FinalSORTED BY ITEM NUMBER
Item NoResponsible
Chpt MinutesTitle Disposi-tion
15-45 GTG MATSSG 9
Requirement of Additional Information
on Specimen Shapes for Forgings,
Extrusions, and Castings
Continued The Extruder Working Group is continuing to evaluate possible primary variables.
15-46 GTG MATSSG 9Cross-Sectional Information Requirement
for ExtrusionsContinued
An Extruder Working Group led by V. Dangerfield will work to determine how to better
define needed information for discussion at this meeting.
15-47 GTG 9Identification of Derived Property Test
Below A/B Allowables in Analysis
Approved
and Closed
Agenda items will show values that fall below the A- and B-basis. If needed, a new
guideline item will be opened to determine what should be done when there are
multiple values below the B. No changes to the Handbook.
15-49 GTG 9Revision of B-basis Based on Reduction of
A-basisContinued
GSG is opposed to making this change due to various reasons and could not resolve how
they would approach this. Mark James provided the FAA summary included in the
minutes. S. Fantle noted that Boeing procedure is to lower their values. Agreed action:
Create an item for inclusion of recommended method to Chapter 1. It was agreed that
the discussion on reduction of B-basis will not be reconsidered for 10 years.
16-NIN GTG 9Looking at (T99-A) Data for Aluminum
Alloys
Close w/ no
action
J. Goodman gave this presentation for informational purposes. Presentation is available
and posted on member SharePoint site.
15-51 GTG
ASG/
MATSSG
/ GSG
9Periodic Testing of Materials for Derived
PropertiesContinued
Continue to work with AMS / SAE. Invite Laura Feix to next meeting. R. Goode asked
that he be included in AMS working group. He will also prepare an agenda item for
spring meeting to capture ASG discussions and expectations.
15-52 MTG 2MLX19 Plane Strain Fracture Toughness
and Crack Growth
Approved
and closed w/
change
Fracture toughness info was approved, including the specification minimum. S.
Thompson noted that there was additional crack growth data, however, the supplier
does not want to add FCGR data, thus the item is closed without that information.
15-53a MTG 3Mechanical Properties for 7099- T7451
Aluminum Alloy PlateContinued
Lower minimums in 4-5 inch range for B in BUS to L-T. Static Properties are complete
(Add ST-Bearing) Ask for SCC data (R. Reinmuller)
15-53b MTG 3Mechanical Properties for 7099- T7651
Aluminum Alloy PlateContinued
BUS e/d =1.5 for 1-1.5" lower to 121. Review all data to see if should be straight rather
than the bump at single ranges. Waiting on Stress-Strain curves. Re-look at bumps in A-
B- Basis properties. Look at Temper-to-Temper for general "shapes". Asked for SCC data
(R. Reinmuller).
16-02 GTG 9Updates to Strain Departure Methods for
Stress-Strain Curve AnalysesContinued Item continued. A new example for the Spring meeting.
16-03 MTG 3Modulus and Stress-Strain Curves for
2050-T852 Aluminum Alloy Die ForgingContinued Data Received - Agenda will be prepared for Spring
~11~
Final Initial
29th MMPDS Coordination Meeting Minutes -FinalSORTED BY ITEM NUMBER
Item NoResponsible
Chpt MinutesTitle Disposi-tion
16-04 MTG MATSSG 3Mechanical Properties for 7136-T73511
Extrusions
60 Day
Approval with
Changes
Discuss "n" value ranges in a new guideline item. Add buckling notes for the
compression curves (as approved recently). Density should be 0.104. Round Poisson's
ratio to 0.34. Revise intro section. Review compression shape factors for ST orientation
and do not include this curve at this time. Open new item for compression ST curve.
16-05 MTG MATSSG 3Mechanical Properties for 7136-T74511
Extrusions
60 Day
Approval with
Changes
See Item 16-04 for changes to introduction and property table. Add buckling notes on
appropriate compression curves.
16-10 MTG ASG 3Legacy Alloy 7075-T6 Indirect Properties
Update Continued See ASG minutes. Also being discussed in ISG.
16-12 FTGIdentifying Basis of Fastener Shear
Strength on Remaining TablesContinued Agenda for next meeting pending k factor corrections.
16-13 FTG 8Corrections to Table 8.1.3.2.2(c) NAS
1921COn Hold Pending sunset review
16-14 GTG ASG 9Shear and Bearing Test Orientations in
Mechanical Property TablesContinued
S. Fantle presented this item. ASG to take on what would be proposed in Chapter 1 as a
"de-coder" for stress analysts.
16-15 GTG ETWG 9 Emerging Materials ContinuedThe presentation from FAA is included in minutes. The full ETWG meeting slides are
posted in the SharePoint site ETWG working group.16-16 GTG FATWG Fatigue in MMPDS Continued An Agenda item will be prepared for the Spring meeting.
16-17 MTG MATSSG 3Stabilization of AMS WW-T-700/6 for
6061 Seamless Drawn Tubing
60 Day
Approval
Footnote that the thickness ranges and the values were based on ….WW….etc. Do not
change thickness ranges in the table, but capture in footnote that AMS has a different
range with the new spec.
16-18 MTG MATSSG 5Mechanical Properties for Single Melt ATI
425 Cold Rolled Sheet per AMS 6949
Approved
and closed w/
change
Add guideline item to consider the range of n values to determine when to split stress-
strain curves (not just yield strenght and thickness). The number of lots for direct
analysis was corrected as 95. Add density to table. Add fatigue surface condition as
annealed and pickled.
16-19 MTG 3Mechanical Properties for 2395-T84
Extrusion in 45 Degree Orientation
Approved
and Closed
~12~
Final Initial
29th MMPDS Coordination Meeting Minutes -FinalSORTED BY ITEM NUMBER
Item NoResponsible
Chpt MinutesTitle Disposi-tion
16-20 GTG 9Equivalency Testing Assuming Change in
Process (From Item 11-40)Continued
The recommendation to move the section to Chapter 1 and include this method was
approved. It should be noted that this method does not include thickness as a variable.
J. Goodman commented that if regression was used for the baseline, there may not have
been 100 data in a particular thickness break to compare to. It was requested that some
additional information for this instance be added. Have J. Goodman review regression
addition. An agenda will be proposed. Include multiple confidence levels in proposal.
16-21 MTG FATWGAdd Specification Identification to Fatigue
Curves
Approved
and Closed
16-22 MTG multiIdentification of Forging Types for Tables
with A- and B-basis Continued
16-23 MTG PSG
Re-evaluate Item 10-08 for Effect of
Temperature Curve vs Specification
Minimums
Continued
It appears that separate curves are needed for castings vs wrought, at least. E. McDevitt
agreed that effect of temperature would vary for product form due to metallurgical
reasons. Since 1500F is beyond typical usage for this alloy, the curves at this
temperature may not be of interest for inclusion in MMPDS for design. It would be of
interest to include time/temperature curves. J. Rossi and E. McDevitt may be able to
provide data. Action: Develop curve for cast & hip combined and a curve for sheet.
Make an urgent request for bar and forging data to substantiate the existing curve.
Suggested to label current curve as "wrought product only" immediately. Item 16-35
was opened to cover this.
16-24 GTGGuidelines for Modulus When Average
Value is InsufficientContinued
No effort on this item. Will work on this item for next meeting. Consider using COV as a
trigger.
16-25 MTG 6Extension of 718 Bar Gage Range for AMS
5662 and AMS 5663 Continued
Determine if a footnote needs to be added about size / response to heat-treat table.
Check to see if lot release was from excised samples.
16-26 MTG 3Typical Stress-Strain Curves for 2397-T87
Plate
Approved
and closed w/
change
Need to add footnotes to the tangent modulus curves for dual shape factor.
16-27 MTG 3Expansion of 2195-T8 Design Allowable
PropertiesContinued
Noted that the last sentence in the Agenda Item background was from another item
(does not belong). Add footnote to show Fcy 45 only good to 0.375. Look at footnote b.
Sending compression 45deg to include in Spring agenda.
16-28 GTG 9Formal Naming of 2 Shape Factor Model
for Stress-Strain Behavior
Approved
and closed w/
change
R. Rice withdrew his name. Approved to use name "Bron Model". Changes for
consistency will be made as editorial. Changes to Chapter 1 and 9 are shown in the
minutes.
~13~
Final Initial
29th MMPDS Coordination Meeting Minutes -FinalSORTED BY ITEM NUMBER
Item NoResponsible
Chpt MinutesTitle Disposi-tion
16-29 GTG ASG 1Review of Section 1.4.7 Bearing
PropertiesContinued
This item was reviewed in ASG and responses will be sent to T. Sarafin. The response to
comments will be included in the minutes. Some of the comments were accepted. An
agenda will be prepared for the spring meeting.
16-30 MTG 2AM355 Stainless Steel in SCT850
ConditionContinued Look at history of spec. Write an agenda to remove it in this condition.
16-31 MTG 4Correction to A-Basis for 7075-T7352
Aluminum Alloy Hand Forging
Approved
and ClosedNo Comments
16-32 MTG 3Mechanical Properties for 7097-T7651
Aluminum Alloy PlateContinued Agenda will be prepared for the spring meeting
16-33 GTG MATSSG 9Stress Corrosion Cracking Data
Requirements
Approved
and ClosedApproved as editorial to list ASTM G64 instead of G47.
16-34 GTG
Review Guideline on Stress-Strain
Submittal for Number of Curves per
Thickness Range
Continued
Requirements are per orientation. It was noted that the tensile properties may not
change significantly between thickness breaks. Prepare agenda including guidance on
how to determine the number of curves over a range of thickness. Assigned 16-34.
16-35 GTG PSG 6Re-label Inconel Effect of Temperature
Curves for 718 Figure 6.3.5.1.1(a) & (b)
60 Day
Approval
Based on preliminary analysis in Item 16-23 (handout), it was considered urgent to re-
label Figures 6.3.5.1.1(a) and (b) as for wrought product only. The figures will be
included in the minutes for 60 Day Approval. Assigned Item 16-35
16-36 GTG-F FTG 9
Use of T99 as A-Basis When Higher than
Specification for Fastener Shear and
Tension
NewThis will be discussed initially in FTG, as applicable for Chapter 8. The instance that
brought this up is where the specification may be in error. Assigned item 16-36
16-37 FTG 1Chapter 1 Guidelines on Fastener Design
Allowable UsageContinued An Agenda will be prepared for the Spring meeting. Assigned Item 16-37
16-38 MTG 3Addition of 7140 Stress Corrosion
Cracking InformationContinued An agenda will be prepared for the next meeting. Assigned Item 16-38
16-39 MTG 3 7010-T7451 Re-Analysis NewFrom Item 15-22. Analyze recent 7010-T7451 data from Constellium and Aleris. Alcoa
will send data. Assigned item 16-39
16-40 MTG 7Estimated Values in Table 7.3.2.0(c )
Copper Beryllium StripNew
Prepare item which will include the reason the estimated values were included in the
table and to consider removing these values. The material producer should be
contacted to see if data are available. Assigned Item 16-40
16-41 GTG 9 Update Examples in Section 9.8.1 NewPrepare item to update example problem, as the Normal method is not used in this
instance. Assigned Item 16-41
~14~
Final Initial
29th MMPDS Coordination Meeting Minutes -FinalSORTED BY ITEM NUMBER
Item NoResponsible
Chpt MinutesTitle Disposi-tion
16-42 GTG ASG 9Guidelines for Analysis of Stress-Strain
Curves with Shape Factor VarianceNew
Consider guideline to show the range of shape factors within thickness range. Should
there be multiple curves? For examples, look at LT in Item 16-04, 16-18, and L for 2029
Clad (28th). Assigned Item 16-42
15-NIN GTG 9
Test Specimen Improvement: Laminated
Compression (ASTM E9), Pin Bearing
(ASTM E238) and Slotted Shear (ASTM
B831)
Close w/ no
actionNo update given. Close item.
16-NIN GTG ETWG 8 Linear Friction Welding Close w/ no
actionPlease contact F. Bron for a copy of his presentation.
16-NIN MTG PSG Data Sharing Process from HoneywellClose w/ no
action
No presentation was shown. Honeywell is able to release information through their
technical release process.
16-NIN MTG 7Continued Inclusion of Section 7.5
Aluminum Laminates
Close w/ no
action
The specifications are Active and it appears this section is still in use, primarily by non-
aerospace applications.
16-NIN MTG 3
Development of a new high
strength/toughness/corrosion resistance
7XXX plate alloy for aerospace
applications in the 1-6” thickness range
Close w/ no
action
P. Smith, Constellium, gave this presentation. He is requesting approval for public
release. A copy will be posted in SharePoint if available.
16-NIN MTG 2 Load-Control Fatigue for MLX19Close w/ no
action
F. Delvider, Aubert & Duval, requested we close this item. It may be added later if there
is sufficient interest.
16-New MTGExpand range for 2024-T351 AMS 4120 to
8.0 inchesNew Review for statistical basis. Review QQ for partitioning based on new / old sections.
16-New MTG6061 Plate T6X up to 12 inches, expand
rangeNew
R. Reinmuller requested this item. Need to determine if these tempers have been
registered up to 12 inches and if the suppliers are interested in doing this and revising
the AMS specification. Steve F can help ID suppliers. 16-New GTG PSG Isochronal Stress Strain Curves New B. Young will review information on these types of curves.
16-New MTGRevision of 7136 and 2029Alclad Stress-
Strain CurvesNew
Related to new GTG Item 16-42. There was a request to re-do 7136-T73511
compression ST curves in Item 16-04 and 2029 AlClad L curves (28th meeting) based on
the variance in shape factor over thickness range.
16-New MTGInclusion of Properties for AMS 4221,
2124-T8151 PlateNew Constellium, Kaiser, Aleris, Alcoa are producers
~15~
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