1、 WORLDWIDE ENGINEERING STANDARDS Test Procedure GMW16602 Sunroof Drain Hose Environmental Testing Copyright 2011 General Motors Company All Rights Reserved September 2011 Originating Department: North American Engineering Standards Page 1 of 8 1 Scope Note: Nothing in this standard supercedes applic
2、able laws and regulations. Note: In the event of conflict between the English and domestic language, the English language shall take precedence. 1.1 Purpose. Evaluation of the sunroof drain hose performance under environmental conditions. 1.2 Foreword. This document is intended to test performance r
3、equirements of a sunroof module drain hose system under environmental conditions. 1.3 Applicability. This test procedure applies to all passenger vehicles with a sunroof module requiring drain hoses for water management. This applies to all sunroof systems as defined in the Vehicle Technical Specifi
4、cations (VTS) Subsystem Technical Specification (SSTS). 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. GMW3600 3 Resources 3.1 Facilities. The test facilities shall be accre
5、dited to ISO/IEC standards or by the International Laboratory Accreditation Cooperation. However, all measuring variables as specified in this specification shall be determined correctly with respect to its physical definition. 3.1.1 Calibration. The test facilities and equipment shall be in good wo
6、rking 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 specification shall be determined correctly with respect to its physical definition. 3.2 Equipment. 3.2.1 Test f
7、ixture (representative of interfacing components/body) or vehicle body. 3.2.2 Hose routing in the body or fixture must be representative of the installed hose design position. 3.2.3 Environmental chamber with the following requirements: x Relative Humidity 10% to 95% required x Hot Tmax = 90 C/Cold
8、Tmin = -30 C x Digital Camera x Permanent Marker x Test Samples x Tension/compression gauge 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
9、line) for product validation (PV). Any changes to the components or material, e.g., design, fit, form, function, 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 E
10、NGINEERING STANDARDS GMW16602 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 2 of 8 properties, manufacturing process, and/or location of manufacture require revalidation. GM shall approve validation methods for product/process changes before the supplier is committed
11、to the change. Refer to GMW3600. 3.4 Test Time. Calendar time: 10 days Test hours: 72 hours Coordination hours: 8 hours 3.5 Test Required Information. Requirements from the SSTS or respective specifications are necessary in order to execute test methods in this document (Table A1 and Table A2 for a
12、list of variables required). Equipment and test sample detail is included in Section 4 of this document. 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 Procedur
13、e 4.1 Preparation. 4.1.1 Fixtures. Unless otherwise specified, mount the test sample on a fixture of welded construction designed to place the test sample in its vehicle orientation. Mount with the production attachment strategy or, equivalent. Locating features and body metal interface must be repr
14、esented in the fixture design. Position the fixture retention points to the test base such that the fixture can be removed without removing the sunroof. The GM Validation Engineer and GM Designing Engineer shall approve the design. 4.1.2 Test Samples. All test samples shall be design intent and meet
15、 all functional and dimensional requirements. Samples must have all design intent components that might affect performance. These include clips, grommets, connectors, hoses, sunroof spouts (or representation), etc. Preliminary tests may need to be made to evaluate whether a particular component may
16、be worst case, e.g., connectors. The GM Validation Engineer and GM Designing Engineer shall approve any exceptions prior to the start of testing. 4.2 Conditions. Conditions are according to the relevant test procedure. All conditions specified shall be targeted toward the specified value with any gi
17、ven tolerance () used to compensate for variation. During testing, conditions specified shall not be adjusted within the tolerance unless it is to maintain the particular test condition within the specified tolerance. If such an adjustment is made, it shall be approved by the applicable GM engineer
18、prior to the start of any testing. Unless otherwise specified, perform tests in the as received condition without special preconditioning. 4.2.1 Environmental Conditions. 4.2.1.1 Temperature and Voltage Definitions. Symbol definitions required for test methods contained in this procedure are listed
19、in Table A1. Actual requirement values for the symbols shall be obtained from the Subsystem Technical Specification (SSTS) or the respective specification and recorded on Table A3. If not otherwise specified, tests shall be performed at Troom = 23 3 C. If various temperature ranges for the tests are
20、 specified, the procedure shall be constructed, if not otherwise specified, in a way that all tests shall be performed first at Troom = 23 3 C, then at high temperature and lastly at low temperature. If not specified, the test parameter for relative humidity (RH) shall be set at 50 5% and voltage se
21、t to Unom. 4.2.1.2 System Performance Conditions. Symbol definitions required for test methods contained in this procedure are listed in Table A2. Actual requirement values for the symbols shall be obtained from the SSTS or the respective specification and recorded on Table A3. 4.2.2 Test Conditions
22、. 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. The drain hoses are to be installed in the fixture/body in the design position. The insertion force should b
23、e recorded at this point. Also, three samples should be run to measure the retention force of the connector. Once installed the drain hoses are to be marked with a permanent marker. These marks are to be added to all points that are being inspected. Reference points should be established before test
24、ing to identify growth or shrinkage of the hose under 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 GMW16602 Cop
25、yright 2011 General Motors Company All Rights Reserved September 2011 Page 3 of 8 The test fixture/body shall be placed in the environmental chamber and cycled to the prescribed test procedure in Appendix B. This test is to be run, with each design iteration, which represents a sample. This procedur
26、e is to be run statically and under road load inputs (provided by GM). 4.4 Vehicle Test. A vehicle with the design intent attachment scheme is to be run at GM under the following environmental conditions to verify the subsystem testing performed at the supplier. Temperature and humidity should be id
27、entical with sunroof SSTS, should show Tmin Tmax and the real values in separate chart. 5 Data 5.1 Calculations. 5.2 Interpretation of Results. With reference to this General Specification, the test results shall be specified in a test report. 5.2.1 Pass/Fail Criteria. Ensure there are no disconnect
28、ions or movement of the connectors to hose, or grommets to hose, clips, and hoses. If there is any movement from the start of test, measure distance from the mark and note in results table. Best practices require mechanical or chemical bond between connector and hoses. The supplier shall work with t
29、he GM Design Release Engineer to comprehend this requirement. x Ensure there are no disconnections at all interfaces. x Document any permanent sets of the hose. x Ensure there are no restrictions/kinks/deformations. 5.3 Test Documentation. The following is required: x Test Fixture photo. (Figure A1)
30、 x Test Sample photo. x Results Table (Table A3) The supplier shall write evaluation reports to document the results of all their validation activities and shall make the test results and evaluation reports available to GM Engineers upon request. Refer to GMW3600. 6 Safety This standard may involve
31、hazardous materials, operations, 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 limitati
32、ons prior to use. 7 Notes 7.1 Glossary. 7.2 Acronyms, Abbreviations, and Symbols. DV Design Validation IEC International ElectroTechnical Commission ISO International Organization for Standardization PV Production Validation RH Relative Humidity SSTS Subsystem Technical Specification STDEV Standard
33、Deviation TSS Tilt and Slide Sunroof VTS Vehicle Technical Specification 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Test to GMW16602. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo repr
34、oduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16602 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 4 of 8 9 Release and Revisions This standard was originated in May 2011. It was first approved by the Roof Closures
35、GSSLT in September 2011. It was first published in September 2011. Issue Publication Date Description (Organization) 1 SEP 2011 Initial publication. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without
36、 license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16602 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 5 of 8 Appendix A: Test Definitions Table A1: Temperature and Voltage Definitions Phrase Symbol Definition Minimum Temperature Tmin Minimum limit value of t
37、he ambient temperature at which the component is required to operate. Maximum Temperature Tmax Maximum limit value of the ambient temperature at which the component is required to operate. Maximum Retention Temperature THT High test temperature at which specific system components are expected to fun
38、ction (drain tube retention). Cold Storage Temperature TCS Minimum temperature which the system may experience but is not expected to operate at. Room Temperature Troom Ambient room temperature. Table A2: System Performance and Test Definitions Phrase Symbol Definition Flow Rate, with Drain Tubes Qt
39、 Volumetric flow rate of water to the sunroof water management system when drain tubes are attached of which the system is required to drain. Flow Rate, pre-Durability Test Qpretest Volumetric flow rate of water allowed outside of the Tilt and Slide Sunroof (TSS) water management system prior to dur
40、ability cycling at any one specific drain spout location. Flow Rate, post-Durability Test Qpost Volumetric flow rate of water allowed outside of the TSS water management system after durability cycling. Drain Tube Retention Test, Push On Test at Troom. Ftube1 Maximum axial force value at Troom at wh
41、ich the drain tube shall push on to the TSS drain spout. Drain Tube Retention Test, Pull Off Test at Troom. Ftube2 Minimum axial force value at Troom at which the drain tube shall pull off the TSS drain spout Drain Tube Retention Test, Pull Off Test at THT. Ftube3 Minimum axial force value at THT at
42、 which the drain tube shall pull off the TSS drain spout. Drain Tube Retention Test, Tube Diameter - tube Minimum drain tube diameter. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from
43、IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16602 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 6 of 8 Table A3: Result Table Note 1 Test Sample Criteria Results/Displacements (mm) Observations 1 Average: 1 Minimum: 1 Maximum: 1 Standard Deviation 2 Average: 2 Minim
44、um: 2 Maximum: 2 Standard Deviation Note 1: Add lines for Test Samples over 2. 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 GMW16602 Copy
45、right 2011 General Motors Company All Rights Reserved September 2011 Page 7 of 8 Figure A1: Example Test Fixture Figure Example of test set up in vehicle (From P1LL - Rear Drain Hose) Example of test set up using a fixture (From Lambda DLH Fixture) This fixture is to be designed to represent the hos
46、e in body position. The hose is not to be over constrained. The fixture should also represent the clips, bend locations, and unions in design position. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted with
47、out license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16602 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 8 of 8 Appendix B: Test Sequence Test Set up Time Temperature Humidity Check Reasoning Number of Samples 1 4 h Tmin 10% Inspect part after exposure. This
48、 will show that the assembly can handle the part becoming rigid without failure. Low humidity across all temperatures one cycle 3 1 8 h Tmax 10% Inspect part after exposure. The highest while controlling humidity to a very low state. This will attempt to prevent the tube 1 8 h Tambient 10% Inspect p
49、art after exposure. 2 15 h Tx 95% Inspect part after exposure. Thermal Cycle Performance run 2 times 3 2 2 h Tmax 10% Inspect part after exposure. Go to next Environmental Soak Thermal Cycle Performance run 2 times 2 3 h Tmin Inspect part after exposure. Go to next Environmental Soak Thermal Cycle Performance 3 10 h Tx 95% Inspect pa
