1、 FEBRUARY 2010 Page 1 of 7 This document is restricted and may not be sent outside Navistar Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2010 by Navistar, Inc. NAVISTAR INC. CEMS (CORPORATE ENGINEERING MATERIAL SPECI
2、FICATION) NUMBER: CEMS GT-31 TITLE: Accelerated Weathering of Non-Metallic Materials CURRENT ISSUE DATE: FEBRUARY 2010 WRITTEN/REVIEWED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES ISSUE OF: JUNE 2009 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION Th
3、is specification may involve hazardous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the applicability of regulatory li
4、mits prior to use. Change Notice: Added a note to Section 3.1 and added Appendix A.1 concerning Interior UV Zones. 1.0 APPLICATION This method outlines conditions required for the accelerated weathering of non-metallic materials for the purpose of acceptance testing. 2.0 SCOPE Non-metallic materials
5、 submitted for approval to Materials Engineering that are subject to ultraviolet weatherability requirements are to be tested as stated in the following methods. The specific method required, test duration, and pass/fail criteria are described in the applicable Truck Material Specifications (TMS) an
6、d Corporate Engineering Material Specifications (CEMS). Refer to the General Information section on page 2. 2.1 Restricted Chemical Substances Effective January 1, 2007, all product supplied to the requirements of this specification must comply with the requirements of the CEMS B-50 specification. 3
7、.0 PREFERRED TEST METHODS New materials submitted for approval should be qualified using one of the following two methods, depending upon application. 3.1 Method A Interior Exposure (See Appendix A.1 for guidance on recommended exposure levels for interior trim materials.) Xenon Arc exposure per SAE
8、 J2412 with the following modifications: The filter shall provide a spectral power distribution similar to that of a Window-Q filter. The irradiance control point shall be 0.74W/m2 at 420 nm. 3.2 Method B Exterior Exposure Xenon Arc exposure per SAE J2527 with the following modifications: The filter
9、 shall provide a spectral power distribution similar to that of a Daylight-Q filter. 4.0 ALTERNATE TEST METHODS Existing materials may have previously been qualified using one of the following methods, and some material specifications may continue to reference these methods. If so, the test data rem
10、ains valid, and there is no need to requalify the material. The method used for material qualification shall be stated in all relevant documentation. Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without li
11、cense from IHS-,-,-NUMBER: CEMS GT-31 TITLE: Accelerated Weathering of Non-Metallic Materials CURRENT ISSUE DATE: FEBRUARY 2010 FEBRUARY 2010 Page 2 of 7 This document is restricted and may not be sent outside Navistar Inc. or reproduced without permission from Corporate Technical Standards. Supplie
12、rs are required to assume all patent liability. 2010 by Navistar, Inc. 4.1 Method C Exterior Exposure QUV exposure per ASTM G154 using UVA-340 lamps at an irradiance of 0.77 W/m2. Test cycle will alternate 8 hours of ultraviolet light exposure at 60 C, followed by 4 hours of condensing humidity at 5
13、0 C, and then repeat. 4.2 Method D Exterior Exposure QUV exposure per ASTM G154 using UVB-313 QFS-40 lamps at an irradiance of 0.43 W/m2. Test cycle will alternate 8 hours of light exposure at 60C, followed by 4 hours of condensing humidity at 50 C, and then repeat. 4.3 Method E Interior Exposure QU
14、V exposure per ASTM G154 using UVA-351 lamps. Test cycle will alternate 8 hours of ultraviolet light exposure at 50 C, followed by 4 hours of condensing humidity at 40 C, and then repeat. 4.4 Method F Interior Exposure QUV exposure per ASTM G154 using UVA-351 lamps. Test cycle is continuous ultravio
15、let light at 50 C only, with no condensing humidity. 5.0 REPORT Requirements for reporting test results are stated in the applicable TMS and CEMS documents. 6.0 TECHNICAL INFORMATION For further information related to the technical content of this specification, contact: Suppliers may purchase contr
16、olled copies of this specification by contacting: Materials Engineering and Technology Dept. Truck Development and Technology Center 2911 Meyer Road Fort Wayne, IN 46803 E-mail: MaterialsEngineeringN IHS Global Inc. 15 Inverness Way East Englewood CO 80112-5776 Phone: 1-800-854-7179 E-mail: Automoti
17、veIHS.com Website: http:/ A.0 GENERAL INFORMATION (NOT A REQUIREMENT) Wavelength sizes Type of UV Light Wavelength, nanometer (nm) UV-A 320-380 nm UV-B 280-320 nm UV-C 180-280 nm Natural Sunlight 280-800 nm The Navistar Materials Engineering Group has determined that the following are equivalent: Xe
18、non testing: 1200 kJ = 1000 hrs = one year South Florida exposure UV testing: 500 hrs UV-B 313 exposure = one year South Florida exposure UV testing: 1000 hrs UV-A 340 exposure = one year South Florida exposure UV testing: 1000 hrs UV-A 351 exposure = one year South Florida exposure Copyright Navist
19、ar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: CEMS GT-31 TITLE: Accelerated Weathering of Non-Metallic Materials CURRENT ISSUE DATE: FEBRUARY 2010 FEBRUARY 2010 Page 3 of 7 This documen
20、t is restricted and may not be sent outside Navistar Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2010 by Navistar, Inc. A.1 UV ZONES FOR INTERNATIONAL TRUCK INTERIORS Plastic Parts, Woven and Knit Fabric Trim, Vinyl
21、 Coated Trim and Composite Trim Panels Zone Application Requirement (kJ/m) A (in red) Direct light above beltline (top of door and IP) Plastic Parts - 3,600 Vinyl Parts 1,280 Leather Steering wheel only - 450 B (in yellow) Direct light below beltline (lower door and rearward facing portion of IP) Pl
22、astic Parts - 2,300 Leather 225 All other Soft Trim - 640 C (in blue) Indirect light (floor, back panel, overhead console, headliner, sleeper components) Plastic Parts - 1,200 All other Soft Trim - 225 NOTE: Painted metal shall meet the requirements of the paint specification (usually TMS-9009). See
23、 diagrams below for zone locations Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: CEMS GT-31 TITLE: Accelerated Weathering of Non-Metallic Materials CURRENT ISSUE DATE: F
24、EBRUARY 2010 FEBRUARY 2010 Page 4 of 7 This document is restricted and may not be sent outside Navistar Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2010 by Navistar, Inc. Figure 1. Zone “C” (in blue) all components
25、in sleeper Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: CEMS GT-31 TITLE: Accelerated Weathering of Non-Metallic Materials CURRENT ISSUE DATE: FEBRUARY 2010 FEBRUARY 20
26、10 Page 5 of 7 This document is restricted and may not be sent outside Navistar Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2010 by Navistar, Inc. Figure 2. Zone “A” (in red) above door beltline, top of IP, steering
27、 wheel, and visor Zone “B” (in yellow) below door beltline, IP face, and seat Zone “C” (in blue) headliner and floor mat Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: CE
28、MS GT-31 TITLE: Accelerated Weathering of Non-Metallic Materials CURRENT ISSUE DATE: FEBRUARY 2010 FEBRUARY 2010 Page 6 of 7 This document is restricted and may not be sent outside Navistar Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all
29、 patent liability. 2010 by Navistar, Inc. Figure 3. Zone “A” (in red) above door beltline, top of IP, steering wheel, and visor Zone “B” (in yellow) below door beltline, IP face, and seat Zone “C” (in blue) headliner and floor mat Copyright Navistar International Corporation Provided by IHS under li
30、cense with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: CEMS GT-31 TITLE: Accelerated Weathering of Non-Metallic Materials CURRENT ISSUE DATE: FEBRUARY 2010 FEBRUARY 2010 Page 7 of 7 This document is restricted and may not be sent outside Navistar
31、Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2010 by Navistar, Inc. Figure 4. Zone “B” (in yellow) back panel of day cab Zone “C” (in blue) floor mat Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
