1、 WORLDWIDE ENGINEERING STANDARDS Test Procedure GMW17040 Rear and Quarter Window 100 Hour Defroster Grid Test Copyright 2013 General Motors Company All Rights Reserved November 2013 Page 1 of 5 1 Scope Note: Nothing in this standard supercedes applicable laws and regulations. Note: In the event of c
2、onflict between the English and domestic language, the English language shall take precedence. 1.1 Purpose. This document is the GM worldwide glazing testing standard. The purpose is to establish a common test methodology for glazing materials to ensure that a high quality world class system is cons
3、istently developed and produced. This standard is for the development phase of new technologies but can be used for validation of the product. This document and any suggestions or revisions will be reviewed and/or updated annually by the Fixed Glass Global Subsystem Leadership Team (GSSLT). 1.2 Fore
4、word. This is a component/subsystem level test and should not be used for vehicle level testing. 1.3 Applicability. This standard is applicable for all passenger vehicles, Multipurpose Passenger Vehicles (MPV), and truck models with heated grid elements in fixed glass and produced by GM Worldwide. 2
5、 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. GMW3600 2.3 Additional References. Best Practice Number: 105219 (see Knowledge Set Number 1268). The supplier shall work with t
6、he GM responsible engineer to comprehend this requirement. GM Security Guidelines Subsystem Technical Specifications (SSTS) 3 Resources 3.1 Facilities. 3.1.1 Calibration. The test facilities and equipment shall be in good working order and shall have a valid calibration label. 3.1.2 Alternatives. Al
7、ternative 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. Thermal Image Camera Power Supply Direct Current (DC) Power Supply Data Acquisition/Switch
8、Unit Test Stand/Fixture 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 GMW17040 Copyright 2013 General Motors Company All Rights Reserved N
9、ovember 2013 Page 2 of 5 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 processes (home line) for Product Validation (PV). Any changes to the components or
10、 material, e.g., design, fit, form, function, properties, manufacturing process, and/or location of manufacture require revalidation. GM shall approve validation methods for product/process changes before the supplier is committed to the change. Refer to GMW3600. 3.4 Test Time. Calendar time: 6 days
11、 Test hours: 100 hours Coordination hours: 10 hours 3.5 Test Required Information. 3.5.1 GM validation is to be notified of test failures within 24 hour 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 v
12、ehicle must be followed per GM Security Guidelines. 3.6 Personnel/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. 4.2 Conditions. All conditions spe
13、cified shall be 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 adjust
14、ment is made, it 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. The following conditions apply to all tests unless oth
15、erwise specified: Temperature: +23 3 C Voltage: VNOM 0.3 V at motor terminals Humidity 20 to 70% unless otherwise specified 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 certifica
16、tes, reports, etc. See the GM Design Release Engineer (DRE) and/or the Subsystem Validation Engineer (SVE) for agreements. 4.3 Instructions. 4.3.1 Test Preparation. Using the thermal imaging camera take an infrared (IR) image of the glass test piece prior to running the test. Attach Thermal graphic
17、photos to the test report. 4.3.2 The test samples are to be cycled ON with a voltage of 13.5 V Direct Current (DC) for a total of 100 h continuous. 4.3.3 During the testing, monitor and record resistance every hour. Record the temperature and humidity at start of test, 15 h, 30 h, 45 h, 60 h, 75 h,
18、and 90 h and at end of test. 4.3.4 After 100 h of testing, thermo graphic photographs are to be taken of each test sample. 4.3.5 Record observations, found during testing, in the test report. 4.3.6 Acceptance Criteria. Observe the test samples for any changes in the part resistance. All elements of
19、the test sample shall remain functional during and upon completion of the test. The power requirement of heated backlights shall be the greater of; a) a minimum of 500 W/m2 or b) the required watt density determined via the Heated Back Window Spreadsheet in Best Practice Number: 105219 (reference: K
20、nowledge Set Number: 1268). The supplier shall work with the GM Design Responsible Engineer to comprehend this requirement. The maximum temperature of the grid shall not exceed 70 C when operated at 23 3 C. The bus bars shall always be a minimum of 10 C lower than the heating elements (conductors).
21、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 GMW17040 Copyright 2013 General Motors Company All Rights Reserved November 2013 Page 3 of 5
22、 5 Data 5.1 Calculations. Not applicable. 5.2 Interpretation of Results. Not applicable 5.3 Test Documentation. Record all test results on the Data Sheet (see Appendix A) and include in the test report, photographs of the test setup and the individual test results. The supplier shall write evaluatio
23、n 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. The following is also required for ALL test reports: Procedure number and section numbers
24、on all test reports. Requirement being met and Subsystem Technical Specification (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 standard does
25、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 Document: Supplier
26、to use current approved Five (5) Phase to be provided by GM Product Engineering. Five (5) Phase to include at a minimum: 1 = Issue Description 2 = Root Cause Analysis 3 = Containment 4 = Implementation 5 = Evaluation/Validation 7.2 Acronyms, Abbreviations, and Symbols. DC Direct Current DRE Design R
27、elease Engineer DV Design Validation GSSLT Global Subsystem Leadership Team IR Infrared MPV Multipurpose Passenger Vehicle PV Product Validation SSTS Subsystem Technical Specification SVE Subsystem Validation Engineer VTS Vehicle Technical Specification 8 Coding System This standard shall be referen
28、ced in other documents, drawings, etc., as follows: Test to GMW17040 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 GMW17040 Copyright 2013
29、 General Motors Company All Rights Reserved November 2013 Page 4 of 5 9 Release and Revisions This standard was originated in August 2013. It was first approved by Body Fixed Glass GSSLT in November 2013. It was first published in November 2013. Issue Publication Date Description (Organization) 1 NO
30、V 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 GMW17040 Copyright 2013 General Motors Company All Rights Reserv
31、ed November 2013 Page 5 of 5 Appendix A Data Sheet A1: Defrost Conformance 100 Hour - Test Report Supplier: Date: Part Name: Part Number: Test Lab/Site: Test Engineer Name: Test Engineer Phone: Test Engineer e-Mail: Test Conditions Start 15 hour 30 hour 45 hour 60 hour 75 hour 90 hour 100 hour End T
32、emperature: Humidity: Thermal Image Number Observations Thermal Graphic Images: Supporting Photos - Test Setup and Conditions: Resistance Graphs: Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
