1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Changes 2011 10 17 N Status Replaced by WSS-M15P32-D L. Sinclair, NA 1996 06 17 Activated J. Williams Y. Alaniva WP 3948-a Page 1 of 7 TRIM ASSEMBLY, ENCLOSED LUGGAGE WSS-M15P32-C COMPARTMENT COVERING NOT TO BE USED F
2、OR NEW DESIGN 1. SCOPE This specification defines the minimum durability and performance requirements of all carpeted luggage or load compartment trim components where various materials are combined to provide a trim assembly having decorative and/or functional features. This includes: rear seat bac
3、k trim in enclosed luggage compartment applications, deck lid trim and spare tire covers (not for exposed load compartment applications). 2. APPLICATION This specification was released originally for material used as luggage compartment trim parts. 3. REQUIREMENTS In addition to the requirements lis
4、ted herein, individual carpet assembly components shall meet all the requirements of the applicable material specifications. 3.1 QUALITY SYSTEM REQUIREMENTS Material suppliers and part producers must conform to Quality System Requirements, QS-9000. Material specification requirements are to be used
5、for initial qualification of materials. A Control Plan for ongoing production verification is required. This plan must be reviewed and approved by the relevant Ford Materials activity and/or Ford Supplier Technical Assistance (STA) prior to production parts submission. Appropriate statistical tools
6、must be used to analyze process/product data and assure consistent processing of the materials. Part producers using this material in their products, must use Ford approved materials and must conform to a process control plan which has been approved by STA and/or the relevant Materials Activity. 3.2
7、 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS Ford Motor Company, at its option, may conduct infrared and/or thermal analysis of material/parts supplied to this specification. The IR spectra and thermograms established for initial approval shall constitute the reference standard and shall be k
8、ept on file at the designated material laboratory. All samples shall produce IR spectra and thermograms that correspond to the reference standard when tested under the same conditions. ENGINEERING MATERIAL SPECIFICATION WSS-M15P32-C WP 3948-bPage 2 of 7 3.3 CONDITIONING AND TEST CONDITIONS All test
9、values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. 3.4 APPEARANCE (FLTM BI 109-01) All appearance properties shall
10、 match the approved Design Center master sample as reviewed by the design activity (of the affected product engineering office) or shall be as specified on the engineering drawing. 3.5 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min
11、70 Formation of clear film, droplets or crystals is cause for rejection. 3.6 ENVIRONMENTAL TESTING The trim assembly, after the test, shall exhibit no visible and objectionable appearance such as: . Wrinkling . Distortion . Blistering . Delamination . Expansion, shrinkage or warpage which will inter
12、fere with normal function or cause objectionable and unsightly gaps. In addition, any objectionable appearance observed during the test should be reported. Test Method: Conduct with the trim assembly mounted on an actual or simulated production support foundation with the approved retention methods.
13、 The assemblies shall be subjected to the environmental cycles specified in paragraph 3.6.1 and 3.6.2. Automated programmable test cycles based on the listed test conditions may be accepted by prior agreement with the affected Materials Engineering Activity. Ramp speed 1 to 5 C per minute (record ac
14、tual ramp speed on data sheet). ENGINEERING MATERIAL SPECIFICATION WSS-M15P32-C WP 3948-bPage 3 of 7 3.6.1 Short Term Heat, Humidity and Cold Cycle Test three previously unexposed assemblies. . 5 h at - 40 +/- 2 C . 30 min at 23 +/- 2 C and 50 % R.H. . 5 h at 80 +/- 2 C . 30 min at 23 +/- 2 C and 50
15、 % R.H. . 2 h at 50 +/- 2 C and 95 +/- 5 % R.H. . 30 min at 23 +/- 2 C and 50 % R.H. . 5 h at - 40 +/- 2 C . 30 min at 23 +/- 2 C and 50 % R.H. . 5 h at 80 +/- 2 C 3.6.2 Long Term Heat Exposure Test one previously unexposed assembly: 7 days at 80 C +/- 2 C 3.7 PHYSICAL PROPERTIES In addition to the
16、following minimum requirements, production trim assemblies must withstand normal handling during shipping, installation, use and service, without tearing, breaking, or permanently deforming. 3.7.1 Cold Impact Rubber Ball The assembly shall show no evidence of cracking or breaking after the ball drop
17、 test or removal from the support foundation and shall fully recover from indentation caused by the ball drop test in the time required for the assembly to return to 23 +/- 2 C. Test Method: Mount the portion of the assembly to be tested on an actual or simulated production support foundation with t
18、he approved retention methods. Test in the most adverse locations. Age the mounted assembly 24 h at 80 +/- 2 C, then condition for 5 h at - 30 C. Remove from the cold box and immediately (within 10 seconds), drop the rubber ball from a height of 610 mm on the assembly. Within the next 110 seconds, r
19、emove the trim from the actual or simulated production support foundation. The rubber ball shall weigh 4.5 kg, be 127 mm in diameter and 60 +/- 5 Durometer A ISO 868/ASTM D 2240. ENGINEERING MATERIAL SPECIFICATION WSS-M15P32-C WP 3948-bPage 4 of 7 3.7.2 Adhesion of Cover Material to Substrate, min (
20、ASTM D 413, Machine Method, Strip Specimens Type A, sample size 200 x 50 mm, avg. 4 samples, jaw speed 305 mm/minute.) Original 10 N Cycled 7 N (per para 3.6.1) Heat 7 N (per para 3.6.2) Test Method: The above method is to be employed for all dielectric, heat or adhesively bonded materials. Individu
21、al bond lines less than 25 mm must also meet the above minimum requirements when computed on a per mm basis. Special bonded sections such as corrugated design, etc., as well as extra wide bonded areas exhibiting low prorated bond strength values may be accepted provided they have been approved by th
22、e Materials Engineering Activity. 3.8 APPEARANCE PROPERTIES 3.8.1 Resistance to Fade, min (SAE J1885 and ISO 105-A02/AATCC Evaluation Procedure 1) Xenon Arc Exposure 112.8 kJ/m2 Rating 4 The material shall be rated after exposure using the AATCC Gray Scale for evaluating Change in Color (10 Step). P
23、roduction materials shall exhibit fade resistance qualities equal to or better than the master sample approved for production by the Materials Engineering Activity. 3.8.2 Fiber Deterioration No excessive deterioration of fibers or yarns after the above xenon arc exposure. The resistance to deteriora
24、tion of production material shall be equal to or better than that exhibited by the master sample approved by the Materials Engineering Activity. Test Method: Firmly apply a piece of 3Ms Highland Brand 6200 Permanent Mending Tape to the surface of the exposed fabric (yarn). Then rapidly strip the tap
25、e and mount it on a sheet of light or dark cardstock which contrasts with the color of the fiber. Repeat the test with a new piece of tape on a unexposed sample and compare the length and quantity of fibers removed by the tape. Report fiber deterioration if a significantly larger number of fibers (u
26、sually of shorter lengths) are removed from the exposed versus unexposed sample. ENGINEERING MATERIAL SPECIFICATION WSS-M15P32-C WP 3948-bPage 5 of 7 3.8.3 Heat Aging, min Rating 4 (7 days at 90 +/- 2 C, ISO 105-A02/AATCC Evaluation Procedure 1) No individual yarn or combination of yarns shall exhib
27、it fiber deterioration or color tone change in excess of the above rating. There shall be no visual deterioration of the backcoating. 3.8.4 Bleeding, min Rating 4 (FLTM AN 101-01 and AATCC Evaluation Procedure 3) 3.8.5 Resistance to Rubbing (Crocking) (FLTM BN 107-01, AATCC Evaluation Procedure 3, u
28、se instrumental method, FLTM BN 107-02 when color transfer is visually apparent) Rating Dry 4 (7.0 Delta E maximum) Distilled Water 4 (7.0 Delta E maximum) If an instrument with diffuse geometry is used, the specular component of reflectance shall be included in the measurement. Note: If a crock res
29、ult is greater than 7.00 DE, repeat the colorimeter measurement four (4) additional times and average all five (5) results to minimize measurement error. The average must be less than or equal to 7.00 DE. DO NOT conduct another crock test on the roll unless examination of the original crock cloth in
30、dicates the test was conducted improperly (e.g., uneven pressure of the crock finger). 3.8.6 Soiling and Cleanability (FLTM BN 112-08, ISO 105-A02/AATCC Evaluation Procedure 1) After Cleaning, min Rating 3 3.9 WEAR PROPERTIES 3.9.1 Resistance to Abrasion, min 1200 cycles (SAE J1530A, 500 g load, H10
31、 wheel) The carpet shall exhibit no visual evidence of wearthrough to the foundation of the pile fibers in the abraded area. Production material shall be equal to or better than the material approved for production by Materials Engineering. ENGINEERING MATERIAL SPECIFICATION WSS-M15P32-C WP 3948-bPa
32、ge 6 of 7 3.9.2 Resistance to Snagging, min 50 cycles (SAE J1530-A, 500 g load, H-18 wheels) No evidence of fiber pullout in excess of the material originally approved by Materials Engineering. 3.10 RESISTANCE TO MILDEW The material shall exhibit no visible evidence of mildew growth and/or objection
33、able odor after 7 days exposure in a humidity cabinet maintained at 98 +/- 2 % relative humidity and 38 +/- 2 C. 3.11 ODOR, max Rating 2 (FLTM BO 131-01/SAE J1351 except 1 liter glass jars) 3.12 FLAMMABILITY (SAE J369/ISO 3795) Burn Rate, max 100 mm/minute 3.13 ADDITIONAL REQUIREMENTS Specific requi
34、rements for material and/or manufactured parts shall be specified on the Engineering drawing, Engineering parts specification and/or performance specification. All critical areas with respect to these properties shall be clearly designated on the engineering drawing. 3.14 SUPPLIERS RESPONSIBILITY Al
35、l materials supplied to this specification must be equivalent in all characteristics to the material upon which approval was originally granted. Prior to making any change in the properties, composition, construction, color, processing or labeling of the material originally approved under this speci
36、fication, whether or not such changes affect the materials ability to meet the specification requirements, the Supplier shall notify Purchasing, Toxicology and the affected Materials Engineering activity of the proposed changes and obtain the written approval of the Materials Engineering activity. T
37、est data, test samples and a new code identification are to be submitted with the request. Substance restrictions imposed by law, regulations or Ford, apply to the materials addressed by this document. The restrictions are defined in Engineering Materials Specification WSS-M99P9999-A1. ENGINEERING M
38、ATERIAL SPECIFICATION WSS-M15P32-C WP 3948-bPage 7 of 7 4. APPROVAL OF MATERIALS Materials defined by this specification must have prior approval by the responsible Materials Engineering activity. Suppliers desiring approval of their materials shall first obtain an expression of interest from the af
39、fected Purchasing, Design and Materials Engineering activity. Upon request, the Supplier shall submit to the affected Materials Engineering activity a completed copy of their laboratory test reports, signed by a qualified and authorized representative of the test facility, demonstrating full complia
40、nce with all the requirements of this specification (test results, not nominal values), the material designation and code number, and test specimens for Ford evaluation. Fords engineering approval of a material will be based on its performance to this specification and on an assessment of suitability for intended processes and/or applications. Upon approval, the material will be added to the Engineering Material Approved Source List.
