1、 WORLDWIDE ENGINEERING STANDARDS Test Procedure GMW16604 Convertible External and Luggage Obstruction Test Procedure Copyright 2011 General Motors Company All Rights Reserved August 2011 Originating Department: North American Engineering Standards Page 1 of 6 1 Scope Note: Nothing in this standard s
2、upercedes applicable laws and regulations. Note: In the event of conflict between the English and domestic language, the English language shall take precedence. 1.1 Purpose. This test procedure is to validate the convertible roof assembly to the GM SSTS Convertible Top Damage Resistance - External O
3、bstruction and Luggage Obstruction. 1.2 Foreword. This document is intended to test performance requirements of a convertible roof assembly that has been externally obstructed. 1.3 Applicability. This test procedure is applicable to all convertible roof assemblies. 2 References Note: Only the latest
4、 approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. None 2.3 Additional References. GM1829 Analysis Development and Validation Plan and Report 3 Resources 3.1 Facilities. Facility requirements are listed in each
5、individual requirement and test procedure section. 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 their physical definition. The test facilities shall be accredited to ISO/I
6、EC standards or by the International Laboratory Accreditation Cooperation. Room large enough to accommodate a vehicle or body in white is required. Overhead clearance is required to allow the top to cycle completely without interference. 3.2 Equipment. 3.2.1 Force Gage. 3.2.2 Obstruction Fixture (se
7、e 3.2.3). 3.2.3 Obstruction Objects. 3.2.3.1 For external obstruction, use a block 100 mm x 100 mm. 3.2.3.2 To simulate a briefcase or luggage bag, use a block 100 mm x 300 mm x 400 mm. 3.3 Test Vehicle/Test Piece. Test samples shall be of production intent design and material for design validation
8、(DV) or production intent design and materials manufactured with production processes (homeline) 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
9、 approve validation methods for product/process changes before the supplier is committed to the change. 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 ENGINEERIN
10、G STANDARDS GMW16604 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 2 of 6 3.4 Test Time. Calendar time: 1 day Test hours: 8 hours Coordination hours: 1 to 2 hours 3.5 Test Required Information. Not applicable. 3.6 Personnel/Skills. The test facility shall have sufficient
11、 personnel having the necessary education, training, technical knowledge and experience for performing the required tests. 4 Procedure 4.1 Preparation. The vehicle to be situated to allow for proper measurements without disturbing the test setup. Obstruction fixture to be installed into the test pos
12、itions. 4.1.1 Test Samples. All test samples shall be design intent and meet all functional and dimensional requirements. Samples must have all design-intent components that might affect operating torque and travel times. These include mechanics, motor, etc. Preliminary tests may need to be made to
13、evaluate whether a particular component may be worst case. The GM Validation Engineer and GM Designing Engineer shall approve any exceptions prior to the start of testing. 4.1.2 Dimension. Measure all assembly checkpoints on one (1) convertible assembly and attach results to test data sheets. All me
14、asured assemblies shall be dimensionally within twice the drawing tolerance for development and Design Validation (DV) testing. All measured assemblies shall be dimensionally within drawing tolerance for Product Validation (PV) testing. The GM Validation Engineer and GM Designing Engineer must revie
15、w the dimensional data prior to start of test. 4.1.3 Torque. All fasteners shall be installed to the convertible assembly using the production torque specification. Fasteners shall then be marked with a visual indicator to enable visual detection of any fastener movement during test. 4.1.4 Fixtures.
16、 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 interfaces must be represented in the fixture design. Position
17、 the fixture retention points to the test base such that the fixture can be removed without removing the convertible top. Vibration test fixtures shall have a first resonant frequency above the maximum specified test frequency and have no responses greater than two (2) times the input signal below t
18、his frequency. The GM Validation Engineer and GM Designing Engineer shall approve the design. 4.2 Conditions. 4.2.1 Environmental Conditions. No environmental conditions testing required. Perform test at ambient conditions. Ambient is defined at 23 C 3 C and a relative humidity of 5% to 40%. 4.2.2 T
19、est 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. All conditions specified shall be targeted toward the specified value with any given tolerance () used to compen
20、sate 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. Unless otherwise specified, perform the tests in the as-received condition without any special pre-conditioning.
21、Such deviations shall be approved by the GM Validation Engineer and specified on the GM1829 Analysis Development and Validation Plan and Report and test reports. 4.3 Instructions. 4.3.1 Before any testing, Supplier Engineering or GM Engineering (depending which is responsible for Engineering and Des
22、ign of the system), must determine the proper order of the testing. Since testing could result in a destructive test and the availability of properties may be extremely limited, identification of the worst potential failure points should be tested last. A block 100 mm x 100 mm (with no sharp radii m
23、inimum of 5 mm radius) is to be placed at each of the test points. Test points at minimum are as follows: x Three (3) points along header - right hand (RH) side and left hand (LH) side at A-pillar to header and at centerline (CL). x Five (5) points across down stack - centerline, 45 degrees across t
24、he down stack and across the leading edge of the down stack at rails. x At center console between the front occupants. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLD
25、WIDE ENGINEERING STANDARDS GMW16604 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 3 of 6 The top shall be cycled until the obstruction is contacted and power is applied for 5 s after contact. Object shall then be removed and top cycled three (3) complete cycles to check
26、for proper function. Each location is to be tested individually, (i.e., 9 test points total = 9 individual obstruction tests). 4.3.2 Maximum Height Obstruction. Determine the maximum travel height of the top mechanism. Place a rigid obstruction at least 100 mm wide at the vehicle centerline. Cycle t
27、he top from closed to open and open to closed position. Repeat two (2) additional times. Note any breakage or loss of function to the convertible top or convertible top weather seal system in the data sheet. The amount of interference is to be determined through math. Obstruction shall have an inter
28、ference of 25 mm minimum. This may necessitate a modification to the stated block size. 4.3.3 Luggage Obstruction. This test is to be performed even if vehicle warns through labels or owners manual of damage due to luggage stowage. Place a 100 mm x 300 mm x 400 mm block (to simulate a briefcase or l
29、uggage bag) in the top stowage area (centered left to right) that prevents the top mechanism from reaching the fully stowed position. Cycle the top from the closed position to the stowed position three (3) times. Note any breakage or loss of function to the convertible top system. Verify that the ba
30、cklight defogger functions properly as designed during post-test review. Disregard abrasive damage to the top from the obstruction. The amount of interference is to be determined through math. Obstruction shall have an interference of 25 mm minimum. This may necessitate a modification to the stated
31、block size. 4.3.4 Final Bow Obstruction. 4.3.4.1 Final Bow Obstruction - Compression. For Compression Bow Systems, the mid-position of the final bow, and the full up position of the final bow should also be obstructed. See Figure 1. Note any damage, distortion or loss of function on the test report.
32、 All blockades should be positioned normal to the direction of travel. Figure 1: Final Bow Obstruction Test Procedure - Compression Bow System 4.3.4.2 Final Bow Obstruction Tension. With the Top in the nominal full up position, add incremental blocks of 3.81 cm (1.5 in) (2 x 4 Block) and cycle the t
33、op. Increments should span from fully stowed position, to nominal latched position. See Figure 2. Note any damage, distortion or loss of function on the test report. All blockades should be positioned normal to the direction of travel. Copyright General Motors Company Provided by IHS under license w
34、ith General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16604 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 4 of 6 Figure 2: Final Bow Obstruction Test Procedure Tension Bow System
35、 5 Data 5.1 Calculations. Not applicable. 5.2 Interpretation of Results. Note and photograph any abrasion damage, cutting of the top cover or canopy, or minor dents to the exterior surface of the convertible top system on the data sheets. Abrasion damage, cutting of the top cover or canopy, or minor
36、 dents are permissible at the point of contact only. Indirect abrasion damage, cutting or denting is not permissible and is considered a test failure. Reduction in performance, breakage, or loss of function of the convertible top system and/or weatherstrip is not permissible and is considered a test
37、 failure. Final interpretation of results of this testing is the responsibility of the GM Validation Engineer. 5.3 Test Documentation. Samples of components or material released to this standard shall be tested for conformity with the requirements of this standard and approved by the responsible GM
38、department prior to the start of delivery of production level components or materials. Any change to the component or material, e.g., design, function, properties, manufacturing process and/or location of manufacture, requires a new release of the product. It is the sole responsibility of the suppli
39、er to provide the customer, unsolicited, with documentation of any change or modification to the product/process, and to apply for a new release. If not otherwise agreed to, the entire verification test shall be repeated and documented by the supplier prior to start of delivery of the modified or ch
40、anged product. In some cases, a shorter test can be agreed to between the responsible GM department and the supplier. Record observations, measurements and results on the Data Collection Table listed in Appendix A. Provide photos of the test setup and results of the test. General Motors Validation i
41、s to be notified of test failures within a 24 h period of occurrence. Notification is to be in the form of a five phase report. 6 Safety This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address all the safety problems associated with its use
42、. 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. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction
43、 or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16604 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 5 of 6 7 Notes 7.1 Glossary. Not applicable. 7.2 Acronyms, Abbreviations, and Symbols. CL Centerline CTR Center DV Design Valid
44、ation IEC International Electrotechnical Commission ISO International Organization for Standardization LH Left Hand PV Product Validation RH Right Hand SSTS Subsystem Technical Specification 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Test to GMW
45、16604 9 Release and Revisions This standard was originated in May 2011. It was first approved by the Convertible GSSLT in August 2011. It was first published in August 2011. Issue Publication Date Description (Organization) 1 AUG 2011 Initial publication. Copyright General Motors Company Provided by
46、 IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16604 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 6 of 6 Appendix A: Data Collection Table Obstruction
47、 Test Location Breakage or Loss of Function after Obstruction (Y or N)? Comments Header, RH side Header, Ctr Header, LH side Down stack, CL Down stack, 45 degrees across RH side Down stack, 45 degrees across LH side Down stack, across leading edge at rails, RH side Down stack, across leading edge at rails, LH side Center Console Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
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