1、 WORLDWIDE ENGINEERING STANDARDS Test Procedure GMW16809 Windshield Coatings Copyright 2012 General Motors Company All Rights Reserved June 2012 Originating Department: North American Engineering Standards Page 1 of 2 1 Scope Note: Nothing in this standard supercedes applicable laws and regulations.
2、 Note: In the event of conflict between the English and domestic language, the English language shall take precedence. 1.1 Purpose. This test determines if non-lacerative windshield coatings are stained or otherwise degraded by cigarette smoke. 1.2 Foreword. Not applicable. 1.3 Applicability. This s
3、tandard applies to passenger cars, and to multipurpose passenger vehicles, trucks, and buses of 4536 kg gross vehicle mass (weight) rating or less. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Stan
4、dards/Specifications. None 3 Resources 3.1 Facilities. Not applicable. 3.2 Equipment. 3.2.1 Burette stand. 3.2.2 Two clamps for burette stand. 3.2.3 Non-filter short pack (7 mm) cigarettes (10). 3.2.4 Laboratory hood. 3.3 Test Vehicle/Test Piece. Sample size of 7 cm x 7 cm minimum. 3.4 Test Time. Ca
5、lendar time: 1 day Test hours: 2 hours Coordination hours: 2 hours 3.5 Test Required Information. Not applicable. 3.6 Personnel/Skills. Not applicable. 4 Procedure 4.1 Preparation. Not applicable. 4.2 Conditions. Test must be conducted in a laboratory hood with exhaust fan off and sliding door close
6、d to minimize air currents. 4.2.1 Environmental Conditions. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16809 Copyright 2012 General
7、Motors Company All Rights Reserved June 2012 Page 2 of 2 4.2.2 Test Conditions. Deviations from the requirements of this standard shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. 4.3 Instructions. 4.3.1 Cigarette is to be suspe
8、nded horizontally from burette stand. 4.3.2 Sample is to be suspended horizontally from burette stand 10 cm above the cigarette. 4.3.3 Light cigarette. 4.3.4 When cigarette has finished burning, replace it with another. 4.3.5 Repeat 4.3.3 and 4.3.4 until ten (10) cigarettes have been burned. 4.3.6 C
9、lean sample with ammoniated cleaner or the manufacturers recommended cleaner. 4.3.7 Examine sample for evidence of degradation; i.e., yellowing or rippling. 5 Data 5.1 Calculations. Not applicable. 5.2 Interpretation of Results. General Motors Validation is to be notified of test failures within a 2
10、4 h period of occurrence. Test samples shall have no objectionable discoloration from the cigarette smoke. Test samples are to remain fully functional and in compliance with Federal Regulations. 5.3 Test Documentation. Not applicable. 6 Safety This standard may involve hazardous materials, operation
11、s, and equipment. This standard does not propose to address all the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 7 Notes 7.1
12、Glossary. Not applicable. 7.2 Acronyms, Abbreviations, and Symbols. GSSLT Global Subsystem Leadership Team 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Test to GMW16809 9 Release and Revisions This standard was originated in May 2012. It was first
13、 approved by the Fixed Glass GSSLT in June 2012. It was first published in June 2012. Issue Publication Date Description (Organization) 1 JUN 2012 Initial publication. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
