1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 1 2018 03 02 Editorial See Summary of Revisions Z. Jatkowski, NA 2017 05 31 Released Z. Jatkowski, NA Controlled document at www.MATS Copyright 2018, Ford Global Technologies, LLC Page 1 of 7 THERMOPLASTIC PROPERTY DETERMINATION FOR CAE,
2、 WSS-M99D68-A2 RHEOLOGICAL PROPERTIES FOR INJECTION MOLDING 1. SCOPE This specification defines the requirements for measuring selected material properties used in CAE simulation or equivalent modeling of automotive components made from thermoplastic production materials. 2. APPLICATION This specifi
3、cation was released originally to communicate test methods and test parameters for material property data collection to the thermoplastic material suppliers. The data can then be combined with other material property data to model automotive components made from the material. 3. REQUIREMENTS 3.1 APP
4、ROVED SOURCES This specification does not use approved sources. Any reliable supplier meeting these requirements may be used. 3.2 CONDITIONING AND TEST CONDITIONS All test values are based on material conditioned for not less than 24 h prior to testing in a controlled environment of 23 +/- 2 C and 5
5、0 +/- 5% relative humidity. Testing of the material should occur in the conditioning environment or soon after removal. 3.3 VISCOSITY Report viscosity (ASTM D3835) Material supplier should define temperature and pressure ranges Also provide curve, X-Y points, and coefficients for cross WLF viscosity
6、 model See Appendix 1 for example of desired graph of model with raw data overlaid 3.4 PVT CURVE ANALYSIS Report method Material supplier should define temperature and pressure ranges Also provide curve, X-Y points, and coefficients for 2-domain Tait Equation See Appendix 2 for example of desired gr
7、aph and data 3.4.1 Option 1 (Preferred) (Gnomix Method) See section 4 for capable laboratories 3.4.2 Option 2 Piston Apparatus Method (ISO 17744) 3.5 THERMAL CONDUCTIVITY Report (W/ (m K) (ASTM D5930, 5 data points minimum) Material supplier should define temperature range ENGINEERING MATERIAL SPECI
8、FICATION WSS-M99D68-A2 Copyright 2018, Ford Global Technologies, LLC Page 2 of 7 3.6 SPECIFIC HEAT Report (J/ (g K) (ASTM E1269, 10 data points minimum) Material supplier should define temperature range 3.7 COFFICIENT FOR LINEAR THERMAL EXPANSION 3.7.1 Option 1 (Interior, Non-Visible Exterior, and U
9、nderhood Applications) (ISO 11359-2, -30 +/- 2 C to Tg, Tg to 30 +/- 2 C*) Flow Report Value, E-5 mm/mm/ C Cross Flow Report Value, E-5 mm/mm/ C *30 +/- 2 C is commonly used for the majority of thermoplastics. For applications where the known temperature range is higher, the upper range may be adjus
10、ted accordingly. Please contact material supplier for clarification of the desired temperature range. 3.7.2 Option 2 (Exterior Visible Applications) (ISO 11359-2, -30 +/- 2 C to Tg, Tg to 100 +/- 2 C, 3 curves per directions, flow and cross flow) Plaque size is 100 x 150 minimum at 3.2 +/- 0.2 mm th
11、ickness. Plaque to be fan or edge gated. Specimens to be water jet or die cut from the center of plaque, minimum of three samples each direction. Conditioning procedure consists of steps 1-4. Start at 23 C. 1. Ramp 5 C/minute to -50 C 2. Isothermal hold for 5 minutes 3. Ramp 5 C/minute to 120 C 4. I
12、sothermal hold for 10 minutes Leave the test specimen in the equipment and run steps 5-7 5. Ramp 5 C/minute to -50 C 6. Isothermal hold for 10 minutes 7. Ramp 5 C/minute to 120 C Report CLTE value after Step 4 (un-annealed value) for both Flow and Cross Flow directions. Flow Report Value, E-5 mm/mm/
13、 C Cross Flow Report Value, E-5 mm/mm/ C Report CLTE value again after Step 7 (annealed value) for both Flow and Cross Flow directions. Flow Report Value, E-5 mm/mm/ C Cross Flow Report Value, E-5 mm/mm/ C ENGINEERING MATERIAL SPECIFICATION WSS-M99D68-A2 Copyright 2018, Ford Global Technologies, LLC
14、 Page 3 of 7 3.8 TENSILE MODULUS (ISO 527-1) 3.8.1 Isotropic Report value (MPa) 3.8.2 Anisotropic Report value (MPa) 3.9 POISSONS RATIO (ISO 527-1) 3.9.1 Isotropic Report value 3.9.2 Anisotropic Report value 3.10 SHEAR MODULUS (Calculate using Hookes Law with Tensile Data, See appendix 3 for equatio
15、n) 3.10.1 Isotropic Report value (MPa) 3.10.2 Anisotropic Report value (MPa) 3.11 REQUESTED DIGITAL DATA FORMAT In addition to providing a formal report, data should be provided using one of the following data file types Option 1 (Preferred) .UDB OR Option 2 .MTR ENGINEERING MATERIAL SPECIFICATION W
16、SS-M99D68-A2 Copyright 2018, Ford Global Technologies, LLC Page 4 of 7 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. This specif
17、ication is intended to complement existing Ford Engineering Material Specifications for thermoplastics and the data collected and stored in the Ford Materials Database. Test laboratories with known test capability. This list is only an extraction from a list of suitable test laboratories. Other test
18、 laboratories can be chosen as mutually agreed with Ford Materials Engineering and/or Ford CAE experts: LABS CAPABLE OF 3.4.1 TESTING Datapoint Labs http:/ Beaumont Technologies, Inc. http:/ LABS CAPABLE OF 3.4.2 TESTING Moldex3D Molding Innovation http:/ 5. SUMMARY OF REVISIONS 2018 03 02 Editorial
19、 Changed title to more accurately reflect use of specification APPENDIX 1 ENGINEERING MATERIAL SPECIFICATION WSS-M99D68-A2 Copyright 2018, Ford Global Technologies, LLC Page 5 of 7 APPENDIX 2 ENGINEERING MATERIAL SPECIFICATION WSS-M99D68-A2 Copyright 2018, Ford Global Technologies, LLC Page 6 of 7 ENGINEERING MATERIAL SPECIFICATION WSS-M99D68-A2 Copyright 2018, Ford Global Technologies, LLC Page 7 of 7 APPENDIX 3 = 2(1+ ) Where: G = Shear Modulus E = Tensile Modulus = Poissons Ratio
