1、 WORLDWIDE ENGINEERING STANDARDS Test Procedure GMW14862 Under Seat Storage Box Strength and Durability Test Copyright 2013 General Motors Company All Rights Reserved September 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 procedure evaluates the strength and durability of the seat storage box which is installed to the seat or body. 1.2 Foreword. Not applicable. 1.3 Applicability. This procedure applies to
3、all GM passenger cars, light duty and medium duty trucks. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. None 2.3 Additional References. Global Subsystem Technical Specifica
4、tion (GSSTS) GM Approved Test Report Form 3 Resources 3.1 Facilities. An approved GM certified test lab with an adequate bed plate or equivalent work surface necessary for mounting of the test sample and associated test fixtures. 3.1.1 Calibration. The test facilities and equipment shall be in good
5、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. 3.2.1 Mountin
6、g Fixture. The means to support the seat storage box including rigid mounting blocks, or equivalent, simulating the attachment points to mount the seat storage box in body or seat on a bed plate. 3.2.2 Temperature Controlling Device. A chamber shall be capable of setting the temperature from -30 C t
7、o 70 C. 3.2.3 Load and Length Measuring Device. A device which is capable of measuring loads with accuracy not exceeding 10 N and length not exceeding 0.1 mm. 3.2.4 Loading Device. A device shall be capable of applying 500 N. 3.2.5 Weight. A weight of 500 g. 3.2.6 Recorder. A device capable to recor
8、d load, displacement and plotting a load to displacement graph. Note: Calibrate all instrumentation as required. 3.3 Test Vehicle/Test Piece. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without licens
9、e from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14862 Copyright 2013 General Motors Company All Rights Reserved September 2013 Page 2 of 5 3.3.1 Seat Storage Box. An appropriate seat storage box must include all components necessary to mount in the seat or body. 3.4 Test Time. Not applicable. 3
10、5 Test Required Information. The following information shall be provided to the testing organization: seat fore/aft design position, seat back design position, and Global Subsystem Technical Specification (GSSTS) specified weight. 3.6 Personnel/Skills. 3.6.1 General Motors Design Release Engineer/D
11、esigning Engineer (DRE/DE). 3.6.2 General Motors Validation Engineer. 3.6.3 Testing Organizations Test Engineer. 3.6.4 Testing Organizations Test Technician. 4 Procedure 4.1 Preparation. 4.1.1. Visual Inspection. The DRE/DE will visually inspect the test for correct part numbers, quality of frame we
12、lds, proper fit and assembly and the presence of all required parts. 4.1.2 Mounting. Mount the seat storage box on the appropriate mounting blocks. Include mounting spacers if specified for installation. 4.1.3 Weights. If specified in the GSSTS, introduce a weight in the box for the durability test.
13、 4.2 Conditions. 4.2.1 Environmental Conditions. The durability test may be performed at room temperature or temperatures representative of vehicle profile. Validation Engineer to use engineering judgment based on materials used. Durability test shall be conducted in temperature of -30 C and 70 C re
14、spectively. 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 Storage Box Durability Test. 4.3.1.1 Using the load measuring device,
15、 e.g., push-pull gauge, measure the opening, closing and lever operating effort before durability test. 4.3.1.2 Adjust the storage box from the foremost to rearmost position at a speed of 4 CPM and then from the rearmost to foremost points until the stopper is touched in parallel with the guide. Con
16、tinue until it reaches 3000 cycles at room temperature, 500 cycles at 70 C, and another 500 cycles at -30 C respectively. Before starting a low and high temperature test, the test piece should be soaked for four hours at the test temperature. 4.3.1.3 Using the load measuring device, measure the open
17、ing, closing and lever operating effort after durability test in the temperature ranges specified in the GSSTS. Operational noises before, during and after the durability test shall be monitored and documented. 4.3.2 Storage Box Inside Strength Test (Drop Opening Test). 4.3.2.1 Fix the storage box v
18、ertically at the same attachment points as in vehicle, as shown in Figure 1 so that the front side faces down. 4.3.2.2 Put the weight of 500 g into the tray and fix it as shown in Figure 1 so that it cannot move during free falling. 4.3.2.3 After exposing the tray to -30 C for 4 h, unlock it inside
19、the -30 C chamber to drop to the full stroke (see Figure 1). 4.3.3 Storage Box Stopper Strength Test. 4.3.3.1 With the tray full open, apply the load specified in the GSSTS at the position agreed with the Design Release Engineer (DRE) (usually the center of the storage box). 4.3.3.2 Measure the load
20、 and displacement and plot the load to displacement graph. 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 GMW14862 Copyright 2013 General M
21、otors Company All Rights Reserved September 2013 Page 3 of 5 Figure 1: Storage Box Inside Strength Test 4.3.4 Storage Box Lever Lock Strength Test. 4.3.4.1 With the tray closed, apply the load specified in the Subsystem Technical Specification (SSTS) at the position agreed with the DRE (usually the
22、center of the storage box or the handle) in parallel with the guide using the loading device. 4.3.4.2 Measure the load and displacement and plot the load to displacement graph. 4.3.5 Storage Box Vertical Strength Test (Per Engineering Judgment). 4.3.5.1 Position the tray in vehicle position fixed to
23、 the mounting plate using the same attachment position as in vehicle (see Figure 2). 4.3.5.2. With the tray in open position, apply the vertical load specified in the GSSTS (if not otherwise noted, use 100 N) at the overhang of the storage box for a duration of 5 s. 4.3.5.3 After releasing the load,
24、 no permanent deformation, damage or loss of functionality shall occur. 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 GMW14862 Copyright 2
25、013 General Motors Company All Rights Reserved September 2013 Page 4 of 5 Note: Load application point at overhang of storage box shall be determined by GM DRE/Validation Engineer considering the worst loading condition. Figure 2: Storage Box Vertical Strength Test 5 Data 5.1 Calculations. Not appli
26、cable. 5.2 Interpretation of Results. Not applicable. 5.3 Test Documentation. Complete a GM approved test report form, including the following: 5.3.1 Complete identification of the structural subsystem or the structural components (i.e., part number, lot number, etc.) 5.3.2 Conditioning of test samp
27、le, if any. 5.3.3 Test conditions (i.e., temperature, humidity, force applied, etc.) 5.3.4 Test results. 5.3.5 Observations and conclusions. 6 Safety This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address all the safety problems associated
28、 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. Not applicable. 7.2 Acronyms, Abbreviations, and Symbols. DRE Design Release Enginee
29、r DRE/DE Design Release Engineer/Designing Engineer GSSTS Global Subsystem Technical Specification SSTS Subsystem Technical Specification 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Test to GMW14862 L oa dA p p li ca tio nCopyright General Motors
30、 Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14862 Copyright 2013 General Motors Company All Rights Reserved September 2013 Page 5 of 5 9 Release and Revision
31、s This standard was originated in November 2005. It was first approved by the Global Seat SSLT in May 2006. It was first published in June 2007. Issue Publication Date Description (Organization) 1 JUN 2007 Initial publication. 2 SEP 2013 5 Year Refresh. (Interior Seats GSSLT) Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
