1、 WORLDWIDE ENGINEERING STANDARDS Test Procedure GMW16951 Dialkyl Phthalate Absorption by Non-lacerative Windshield Coatings Copyright 2013 General Motors Company All Rights Reserved June 2013 Page 1 of 4 1 Scope Note: Nothing in this standard supercedes applicable laws and regulations. Note: In the
2、event of conflict between the English and domestic language, the English language shall take precedence. 1.1 Purpose. This test procedure determines how much Dialkyl non-lacerative windshield coatings absorb Dialkyl Phthalate and how affects the abrasion resistance properties of the film. Dioctyl Ph
3、thalate (DOP) shall be used as being representative of the Dialkyl Phthalate family 1.2 Foreword. Not applicable. 1.3 Applicability. This document is the GM Worldwide Windshield Coating Testing Standard. Its purpose is to establish a common test methodology for windshield coatings to ensure that a h
4、igh quality world class system is consistently developed and produced. This is a living document and any suggestions or revisions will be reviewed and/or updated annually by the Fixed Glass Global Subsystem Leadership Team (GSSLT).This document is applicable for all car, multipurpose passenger vehic
5、le (MPV), and truck models produced by GM Worldwide. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. FMVSS 205 2.2 GM Standards/Specifications. GMW3600 2.3 Additional References. GM Security Guidelines Subsystem
6、Technical Specification (SSTS) 3 Resources 3.1 Facilities. No special facilities required. However, all measuring variables as specified in this specification shall be determined correctly with respect to their physical definition 3.1.1 Calibration. The test facilities and equipment shall be in good
7、 working order and shall have a valid calibration label. 3.1.2 Alternatives. Alternative test facilities and equipment may also be used. However, all measuring variables as specified in this standard shall be determined correctly with respect to their physical definition. 3.2 Equipment. Balance with
8、 an accuracy of 0.001 g. Beaker and watch glass, 100 mL. Beaker and watch glass, 4000 mL. Oven, 70 C. 3.3 Test Vehicle/Test Piece. Test samples shall be of production intent design and material for design validation (DV); or, production intent design and materials manufactured with production proces
9、ses (home line) for product validation (PV). Any changes to the components or material, e.g., design, fit, form, function, properties, manufacturing process, and/or location of manufacture require revalidation. GM shall approve Copyright General Motors Company Provided by IHS under license with Gene
10、ral Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16951 Copyright 2013 General Motors Company All Rights Reserved June 2013 Page 2 of 4 validation methods for product/process changes before the supplier is commi
11、tted to the change. Refer to GMW3600. 3.3.1 Unless otherwise specified, three samples of components or systems shall be tested. 3.3.2 All components/systems used in testing shall be within drawing specifications and have supporting data prior to start of test. 3.4 Test Time. Not applicable. 3.5 Test
12、 Required Information. 3.5.1 GM Validation is to be notified of test failures within 24 h period of occurrence. 3.5.2 Supplier to develop five phase document for all test failures. 3.5.3 Product Security. Security protocol for the test vehicle must be followed per GM Security Guidelines. 3.6 Personn
13、el/Skills. The test facility shall have sufficient personnel having the necessary education, training, technical knowledge, and experience for performing the required tests. 4 Procedure 4.1 Preparation. Record initial weight of 30 mm x 30 mm samples. 4.2 Conditions. All conditions specified shall be
14、 targeted toward the specified value with any given tolerance () used to compensate for variation. During testing, conditions specified shall not be readjusted within the tolerance unless it is to maintain the particular test condition within the specified tolerance. If such an adjustment is made, i
15、t shall be approved by the appropriate GM engineer prior to the start of any testing. Unless otherwise specified, perform the tests in the as received condition without any special pre-conditioning. 4.2.1 Environmental Conditions. Test to be run at Ambient. 4.2.2 Test Conditions. Deviations from the
16、 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 Place 30 mm x 30 mm samples in 100 mL beaker and place 100 mm x 100 mm samples in 400 mL beaker. 4.3.2 Fill beakers with en
17、ough DOP to cover the samples. 4.3.3 Place both beakers in oven at 70 C. 4.3.4 Daily remove the 30 mm x 30 mm sample, wipe it dry and weigh it. 4.3.4.1 Plot data points on a Time vs. Weight Graph. 4.3.5 Terminate weighing when either the weight increase over a 48 h period is less than 0.03% or when
18、a line through the data plotted on a graph of time vs. weight becomes asymotic to a horizontal line. 4.3.6 Calculate percent DOP absorption (see 5.1 Calculations). 4.3.7 Examine 100 mm x 100 mm samples for evidence of degradation. 4.3.8 Perform Federal Motor Vehicle Safety Standard (FMVSS) 205 Test
19、No. 17 on the 100 mm x 100 mm samples. 5 Data 5.1 Calculations. 5.2 Interpretation of Results. Not applicable. 5.3 Test Documentation. Record all test results in a data sheet an example is in Appendix A. Include the data sheet in the test report. Include photographs of the test setup and the individ
20、ual test results. The Supplier shall write evaluation reports to document the results of all validation activities and shall make the test results and evaluation reports available to GM Engineers upon request. See GMW3600. All test reports are to be in English. Copyright General Motors Company Provi
21、ded by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16951 Copyright 2013 General Motors Company All Rights Reserved June 2013 Page 3 of 4 The following is also required for ALL te
22、st reports: Procedure number and section numbers on all test reports. Requirement being met and SSTS requirement number. All Test Parameters for Environment and equipment. Any authorized deviations to the plan. 6 Safety This standard may involve hazardous materials, operations, and equipment. This s
23、tandard 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 Glossary. 5-Phase Docume
24、nt: Supplier to use current approved 5 phase to be provided by GM Product Engineering. 5-Phase to include at a minimum: 1. Issue Description 2. Root Cause Analysis 3. Containment 4. Implementation 5. Evaluation/Validation Asymptotic: Becoming increasingly exact as a variable approaches a limit, usua
25、lly infinity. 7.2 Acronyms, Abbreviations, and Symbols. DOP Dioctyl Phthalate DV Design Validation FMVSS Federal Motor Vehicle Safety Standard GSSLT Global Subsystem Leadership Team MPV Multipurpose Passenger Vehicle PV Product Validation SSTS Subsystem Technical Specification 8 Coding System This s
26、tandard shall be referenced in other documents, drawings, etc., as follows: Test to GMW16951 9 Release and Revisions This standard was originated in April 2013. It was first approved by the Fixed Glass GSSLT in June 2013. It was first published in June 2013. Issue Publication Date Description (Organ
27、ization) 1 JUN 2013 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-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16951 Copyright 2013 General Motors Company All Rights Reserved June 2013 Page 4 of 4 Appendix A Data Sheet A1: Example Only Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
