1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 0 2017 02 16 Released L. Schmalz, Z. Jatkowski, NA Controlled document at www.MATS Copyright 2017, Ford Global Technologies, LLC Page 1 of 5 PERFORMANCE, ACOUSTICAL AND INSULATORS, INTERIOR ASSEMBLIES WSS-M99P32-E1 1. SCOPE This specific
2、ation defines the minimum durability requirements of all interior, luggage compartment, and climate control sound absorption/insulation applications, where various materials are combined to provide an assembly having acoustical sound absorption/barrier/insulation and/or functional features. This doe
3、s not include engine (hood) compartment insulators, thermal insulators, and/or exhaust shields. In addition, ultra-high temperature parts exposed to heat from turbochargers, EGR systems and exhaust pipes are not included. 2. APPLICATION This specification was released originally for materials used a
4、s interior, luggage compartment, or climate control for sound absorption/insulation applications. The following components are not in the scope of this performance specification Acoustic wheel arch/well liners: WSS-M99P32-D2/D3 (or latest) Acoustical underbody/engine shields: WSS-M99P32-D4/D5 (or la
5、test) Engine compartment/hood/tunnel Insulators: WSS-M99P32-E6 (or latest) Foams without the primary purpose of NVH: Without pressure-sensitive adhesive: WSS-M99P48-A1 (or latest) With pressure-sensitive adhesive: WSS-M99P48-A3 (or latest) For high temperature applications: WSS-M99P48-A4 (or latest)
6、 3. REQUIREMENTS 3.1 APPROVED SOURCES This specification is performance based and does not have approved sources. 3.2 FINISHED PART REQUIREMENTS Detailed part construction must be submitted along with results for the testing listed in Table 1 for initial approval. Data must be submitted via the Ford
7、 Materials Database (FMD) template. Design Verification (DV) is done on the part to verify supplier feasibility and Product Verification Testing (PV) is done on production parts. DV/PV and sample sizes are defined in Table 2. In addition to the following minimum requirements, production assemblies m
8、ust withstand normal handling during shipping, installation, use, and service, without tearing, breaking, or permanently deforming. 3.3 WEIGHT Weight of each layer of a composite and the total composite shall be included on Engineering Drawing. 3.3.1 Weight per Unit Area (Non-Foams) Report units (g/
9、m2) (FLTM BN 106-01 Procedure A) ENGINEERING MATERIAL SPECIFICATION WSS-M99P32-E1 Copyright 2017, Ford Global Technologies, LLC Page 2 of 5 3.3.2 Net Density (Foams) Report units (kg/m3) (FLTM BN 106-01 Procedure B) 3.4 ODOR (FLTM BO 131-03) Rating 3 max 3.5 FOGGING (SAE J1756, 3 h at 100 C heating,
10、 21 C cooling plate, posttest conditioning 16 h) Fog Number 70 min The formation of a clear (oily) film, droplets or crystals is cause for rejection. All materials, parts and components should be stored in an open environment for 14-28 days after manufacture, and then must be bagged in heat sealed p
11、olyethylene (PE) or PE coated aluminum bags for shipping. Sample shall be tested as part of a production assembly composite if it is 100% bonded. If not 100% bonded, test each component separately. Parts for testing must be labelled with supplier and date of manufacture. 3.6 FLAMMABILITY (ISO 3795)
12、Burn Rate 100 mm/minute max If test specimens cannot be prepared with the proper dimensions (please refer to the test method listed above for the appropriate dimensions) using material cut from the part, properly sized/prepared specimens must be taken from material that has been molded into a blank.
13、 Flame should be applied to the exposed side of the component, or both sides, if the A and B surfaces are exposed to high temperatures. Supplier shall document test conditions in their Control Plan (for PV). 3.7 CONSTRUCTION PROPERTIES 3.7.1 Resistance to Mildew (7 days at 98 +/- 2% relative humidit
14、y and 38 +/- 2 C, Specimen size 100 mm x 100 mm) Remove the part from the cabinet and evaluate (smell the sample) immediately. The part shall exhibit no visible evidence of mildew growth and / or objectionable odor after the 7-day exposure. In addition, part must not separate layers or show any othe
15、r visual deterioration. 3.7.2 Environmental Testing Conduct with the NVH or approved surrogate assembly mounted on an actual or simulated production support foundation with the approved retention methods. 3.7.2.1 Short Term Environmental Cycling (FLTM BO 040-01, Procedure A, 80 C) 3.7.2.2 Long Term
16、Environmental (FLTM BO 040-01, Procedure B, 80 C) *For Paras. 3.7.2.1 and 3.7.2.2, if it is agreed upon by Soft Trim Core Engineering that the maximum use temperature of a component is above the 80 C requirement listed above, ENGINEERING MATERIAL SPECIFICATION WSS-M99P32-E1 Copyright 2017, Ford Glob
17、al Technologies, LLC Page 3 of 5 then that higher temperature should be used. The higher temperature should be included in the General Notes of the Engineering Drawing. 3.8 PHYSICAL PROPERTIES Report the value of the load at which the specimen breaks; include individual values, averages, and % chang
18、es (for 3.8.1.1 and 3.8.1.2) in the data submission package. 3.8.1 Original Breaking Strength (non-foam materials only) 35 N min (ASTM D5034, except speed 25 mm/minute) Specimens to be cut from flat areas of the finished part and the distance between clamps at beginning of test should be 100 mm. Cli
19、mate control applications only Report Only, N This classification is approved for NVH materials in the climate control systems that are installed using the low mechanical stress process of ultrasonic welding. 3.8.1.1 Change After Short Term Environmental Cycling 30% max (conditions per Para. 3.7.2.1
20、) Property Change 3.8.1.2 Change After Long Term Environmental 30% max (conditions per Para. 3.7.2.2) Property Change % = ( ) 100 3.8.2 Tear Resistance Test (foam materials only) Report Value, N/m (ASTM D3574 Test F) 3.8.3 Compression Force Deflection Test (foam materials only) Report Value, kPa (AS
21、TM D3574 Test C) 3.8.4 Constant Deflection Compression Set Test (floor foam materials only) 3.8.4.1 Original Report Value, % (ASTM D3574 Test D) 3.8.4.2 Change After Short Term Environmental Cycling 40% max (conditions per Para. 3.7.2.1) Property Change 3.8.4.3 Change After Long Term Environmental 1
22、0% max (conditions per Para. 3.7.2.2) Property Change % = ( ) 100 3.8.5 Peel Strength (Laminates only) 6 N/50 mm/min (FLTM BN 151-05, Test specimen must be 50 mm wide) or cohesive failure 3.8.6 Moisture Absorption 30% max Cut a 100 x 100 +/-10 mm specimen from the part to be tested and seal any cut
23、edges, with wax. Weigh the specimen to +/- 0.1 g. ENGINEERING MATERIAL SPECIFICATION WSS-M99P32-E1 Copyright 2017, Ford Global Technologies, LLC Page 4 of 5 Suspend specimen at 38 +/- 2 C and 95 +/- 2% R.H. for 24 h. Move specimen to 23 +/- 2 C and 50 +/- 2% R.H. for 1 hour. Weigh the specimen to +/
24、- 0.1 g and determine percent weight increase. ( ) 100 = ! 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. 4.1 FUNCTIONAL REQUIREM
25、ENTS Component supplier shall meet the NVH program specific targets as directed by Ford D&R. Materials shall be tested according to RQT-010604-012968 for sound absorption and/or sound transmission loss as specified by Ford D&R. Target curves should be specified on the Engineering Drawing. 4.2 SUPPLI
26、ERS ONGOING RESPONSIBILITY All materials must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any changes to the material originally approved, whether or not such changes affect the materials ability to meet the specification requireme
27、nts, the supplier shall notify the affected Supplier Technical Assistance (STA), Purchasing, and Materials Engineering activities of the proposed changes (with reasons) by submission of a completed Suppliers Request for Engineering Approval, SREA. For parts and components using Ford Engineering Mate
28、rial Specifications, all samples tested to the specifications for Design Verification (DV), Production Verification (PV) and Production Part Approval Process (PPAP) sign off must be kept until Job 1. 4.3 RESTRICTED SUBSTANCE MANAGEMENT STANDARD Substance restrictions imposed by regulations or Compan
29、y direction applies to the materials addressed by this document. The restrictions are identified in the Restricted Substance Management Standard WSS-M99P9999-A1 which is updated yearly. It is the suppliers responsibility to comply with this standard on a continuing basis through IMDS and or GMAP rep
30、orting. 4.4 DRAWING CALLOUT Engineering Drawings specifying assemblies containing materials that are required to conform to this specification must include the following information in either a Bill of Materials table (preferred) or in the General Notes: Material Performance Specification (WSS-M99P3
31、2-E1) Description of each layer within the material construction Weight of each construction (g/m2 or kg/m3) Supplier and Product Code For further information on this requirement, please contact Materials Engineering. ENGINEERING MATERIAL SPECIFICATION WSS-M99P32-E1 Copyright 2017, Ford Global Techn
32、ologies, LLC Page 5 of 5 Table 1: DV/PV Testing Felt or ShoddyNon-wovenFleeceGlass Fiber Foam(PU,EPP,etc.)Barrier Technology (EVA, EPDM,etc)3.3 3.3.1 Weight per unit area 3(DV+PV) 3.3.2 Net Density 3(DV+PV) 3(DV+PV) 3.4 Odor 3(DV+PV) per condition 3(DV+PV) per condition 3(DV+PV) per condition 3.5 Fo
33、gging 3(DV+PV) 3(DV+PV) 3(DV+PV) 3.6 Flammability Interior Burn Rate - 100mm/min maximum 5(DV+PV) 5(DV+PV) 5(DV+PV) 3.7 Construction Properties 3.7.1 Resistance to Mildew 1(DV) 1(DV) 3.7.2 3.7.2.1 Short Term Environmental Cycling 1(DV+PV) 1(DV+PV) 3.7.2.2 Long Term Environmental 1(DV+PV) 1(DV+PV) 3.
34、8 Physical Properties 3.8.1 Breaking Strength 3.10.1.1 Original 5(PV) 3.10.1.2 Change After Short Term Environmental 5(PV) 3.10.1.3 Change After Long Term Environmental 5(PV) 3.8.2 Tear Resistance 3(PV) 3.8.3 Compression Force Deflection Test 3(PV) 3.8.4 Constant Deflection Compression Set 3.8.4.1 Original 3(PV) 3.8.4.2 After Steam Autoclave Aging Exposure 3(PV) 3.8.4.3 After Dry Heat Aging Exposure 3(PV) 3.8.5 Peel Strength (Laminates only) 3(PV) 3(PV) 3.8.6 Moisture Absorption 1(PV) 1(PV)
