Selection List Standard Fields (Header Information) by tbu19624

VIEWS: 7 PAGES: 11

									                                                    SME initiative


           Selection List Standard Fields
                    (Header Information)

MTRL Code: 5 digit number assigned to a specific material
            Prefix: odd for metals, even for nonmetals

Use Type:      Functional or design “use” for material,
               i.e., adhesive, elastomer etc.

Designation: Manufacturer’s nomencalture for test material

Composition: Generic chemical makeup of material,
             i.e., epoxy, acrylic, etc.

May 2000                MAPTIS Presentation                 52
                                                     SME initiative


            Selection List Standard Fields
                 (Header Information, Continued)

Generic ID: Three alpha character pairs (6 characters)
            1st pair: Use Type
            2nd pair: Primary Composition
            3rd pair: Minor Composition
Min F (K):    Minimum service/operating temperature from
              manufacturer’s literature
Max F (K):    Maximum service/operating temperature from
              manufacturer’s literature
Specification: Designated when material is qualified to a
               specification, can be multiple specs.
 May 2000                 MAPTIS Presentation                53
                                                          SME initiative


           Selection List Standard Fields
                    (Test Data Information)
NHB/Type:     Number for specific test per NASA-STD-6001
              01 = Upward Propagation
              04 = Wire Insulation Flammability
              06 = Odor
              07 = Offgossging
              13 = Mechanical Impact
              17 = Promoted Combustion, etc.

Test NR:      Distinct number assigned to each test series
              - Prefix identifies test facility, e.g.M = MSFC, W = WSTF

Cure NR:      Number that correlates with cure sequence
              in cure table
May 2000                  MAPTIS Presentation                       54
                                                     SME initiative


           Selection List Standard Fields
              (Test Data Information, Continued)

  SMP NR       Material Sample or specimen Number
               - 09 represents worst case record
  R:           Rating assigned to each specific material test
  PCT OXY:     Percent of oxygen in test chamber
  TEMP:        Test temperature
  PRESS:       Pressure in test chamber
  THK:         Thickness of material test specimen
  Width:       Width of test material sample
  Length:      Length of test material sample
May 2000                 MAPTIS Presentation                 55
                                                          SME initiative



              Selection List Standard Fields
                  (Test Data Information, Continued)

Sample Wgt: Mass of material test specimen
Class code:    Material classification code:
               A = Material identification verified
               C = Material identification not verified
Description: D = Descriptive information about material specimen
Remark:        R = Remark about test or configuration of specimen
Temp:          Temperature in test chamber



  May 2000                     MAPTIS Presentation                56
                                                            SME initiative


             Selection List Standard Fields
                   (Test Data Information, Continued)


Obsolete/Discontinued:             Identifies material that are no
                                   longer produced by manufacturer
Manufacturer/Supplier:             The manufacturer and/or
                                   supplier of material
Substrate Material:                Identification of Material used as a
                                   substrate, e.g., aluminum, fiberglass
SUBSTR THK:                        Thickness of substrate material

       Other fields exist that are specific to each test type, i.e.,
                     flammability, offgassing, etc.
 May 2000                     MAPTIS Presentation                      57
                                                   SME initiative

                 Selection List Data Base
                    Data Verification

• Material Identification
      –    Assign Material Code
      –    Verify Manufacturer’s Designation
      –    Verify Use Type
      –    Verify Chemical Composition (Generic)
      –    Minimum/Maximum Service Temperature
      –    Establish Generic Identification Code
      –    Specification(s)

May 2000                   MAPTIS Presentation             58
                                                  SME initiative


              Selection List Data Base
                 Data Verification
• Manufacturer Identification
     – Verify Manufacturer, not Supplier
     – Address, Telephone and Facsimile Number
     – E-mail Address
• New Test Data Temporarily Held in Preliminary
  Data Bases
     – Compare New Test Data with Historical Results
     – Research Anomalies in Test Results
     – Rating Criteria
May 2000                MAPTIS Presentation               59
                                                              SME initiative


            Selection List Data Base – Data
                      Verification
• Initial Data Review
     – Analyst Level
     – Engineer/Analyst Level
• Final Review
     – NASA/NAS/CSC Team
     – Data Evaluated
           • Data Consistency Verified
           • Anomalies Resolved
           • Decision Made to Move Data to Selection List or to Hold

May 2000                       MAPTIS Presentation                     60
                                                            SME initiative


           Nonmetals Properties Data Base

• Current Version
     – Source – Manufacturer’s Literature
     – Sparsely Populated
     – Separate Data Base
• New Version
     – Source – Manufacturer’s Literature
     – 10 – 15 Major Properties
     – Selection List Data Base
        • Adhesives – 85% complete
        • Also Working Lubricants, Coatings, Plastics, Elastomers,
           Potting Compounds, Fabric, Tape, Film
May 2000                     MAPTIS Presentation                     61
                                                  SME initiative


                Metals Properties Data Base
• Source Material
     – Mil-HDBK-5
     – Aerospace Structural Metals Handbook
• Alloys
     –     Aluminum
     –     Steel
     –     Copper
     –     Nickel/Cobalt
     –     Titanium
     –     Magnesium
• Separate Data Base
May 2000                    MAPTIS Presentation           62

								
To top