1、 WORLDWIDE ENGINEERING STANDARDS General Specification GMW14457 Load Compartment Trim Copyright 2012 General Motors Company All Rights Reserved August 2012 Originating Department: North American Engineering Standards Page 1 of 14 1 Introduction Note: Nothing in this standard supercedes applicable la
2、ws and regulations. Note: In the event of conflict between the English and domestic language, the English language shall take precedence. 1.1 Scope. Load compartment trim of the complete vehicle range. 1.2 Mission/Theme. Inspection of the load compartment trim to different performance criteria. This
3、 specification determines the test conditions and the requirements for the testing of the load compartment trim. 1.3 Classification. Side panel trim left/right. Service flap left/right. Storage box cover left/right. Storage net. Sill cover. 2 References Note: Only the latest approved standards are a
4、pplicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. GMW3059 GMW14651 GMW14093 GMW16586 GMW14264 2.3 Additional References. None 3 Test Preparation and Evaluation 3.1 Resources. 3.1.1 Calibration. The test facilities and equipment shall b
5、e in good 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. 3.1.3 Facilities.
6、3.1.3.1 Dudenhofen Test Center (Belgian block wave road, Rheinstrae, Comfort and Durability Track) or equivalent proving ground. 3.1.3.2 Climatic chamber with road simulator. 3.1.3.3 Body or body section with completely equipped tailgates including seals on body. 3.1.4 Equipment. 3.1.4.1 Apparatus a
7、s required by the appropriate test method. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14457 Copyright 2012 General Motors Company All Rights Reserved August 2012 Page 2 of 14 3.1.4.2 Tensile/compression gaug
8、e (measuring range 0 to 500 N with piston (diameter 10 mm) and hook. 3.1.4.3 Torque wrench. 3.1.4.4 Thermometer. 3.1.4.5 Clinometer. 3.1.4.6 Gauges with mounting rack. 3.1.4.7 Device for clip/retainer tear out tests. 3.1.4.8 Falling ball testing device/Pendulum impact device. 3.1.5 Test Vehicle/Test
9、 Piece. Side-panel trim, service flaps, storage box covers, all associated parts and sill cover in assembled condition. 3.1.6 Test Time. Not applicable. Calendar time: days Test hours: hours Coordination hours: hours 3.1.7 Test Required Information. Not applicable. 3.1.8 Personnel/Skills. Not applic
10、able. 3.2 Preparation. Side-panel trim, service flaps, storage box covers, all associated parts and sill cover shall be checked for conformance to the current development, drawing and release status before each test. All deviations shall be noted and, if possible, corrected. Any modifications shall
11、be noted. 3.3 Conditions. 3.3.1 Environmental Conditions. If not otherwise stated, all performance requirements shall be fulfilled in a temperature range of -30 to +80 C. The tests shall be performed at -30 3 C, +23 5 C and +80 3 C. 3.3.2 Test Conditions. Deviations from the requirements of this sta
12、ndard shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. 3.4 Instructions. Not applicable. 3.5 Data. Not applicable. 3.6 Safety. This standard may involve hazardous materials, operations, and equipment. This standard does not pro
13、pose 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. 3.7 Documentation. Samples of components or material rel
14、eased to this standard shall be tested for conformity with the requirements of this standard and approved by the responsible GM 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, manufact
15、uring process and/or location of manufacture requires a new release of the product. It is the sole responsibility of the supplier 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,
16、 the entire verification test shall be repeated and documented by the supplier prior to start of delivery of the modified or changed product. In some cases, a shorter test can be agreed to between the responsible GM department and the supplier. 3.7.1 Test Results. Variables shall be provided for val
17、ues which are not explicitly listed. The values shall be entered in the drawing under the relevant variables. Subjective evaluation shall be performed according to GMW14264. The results shall be entered in the relevant data sheets (Appendix B to Appendix E). 4 Requirements and Procedure 4.1 General.
18、 Tests and requirements according to GMW14651. 4.2 Appearance. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14457 Copyright 2012 General Motors Company All Rights Reserved August 2012 Page 3 of 14 4.2.1 Gap Di
19、mensions. Gap dimensions of the side-panel trim to the C/D-pillar trim panel, rocker trim rear, the rear side windows and the sill cover shall be measured at predefined points (see Figure 1). Gap dimensions as specified by drawing Design Technical Specification (DTS). Figure 1: Measuring Areas Note
20、Key: 1 = D-pillar 2 = Side window 3 = C-pillar 4 = Rocker trim 5 = Sill cover 4.2.2 Fit. The fit of the side-panel trim to the sheet metal and all associated parts in the side-panel trim shall be evaluated according to GMW14264. 4.2.3 Surface Appearance. The surface of the side-panel trim and all as
21、sociated parts shall be evaluated according to GMW14264. 4.2.3.1 Plastic parts shall not show any sunken spots or flashes. 4.2.3.2 Covered components shall have a uniform surface structure. 4.2.3.3 Overall evaluation to obtain is Rating 8. 4.3 Comfort. The location of the H Point (HP) shall be taken
22、 from the drawing and transferred onto the side-panel trim. This point shall be transferred to the arm rest and marked. 4.3.1 A mark shall be located onto the armrest each in a distance of 70 mm behind and 150 mm in front of this point. The circular template shall be positioned at the marked points
23、respectively. The distance s from the contact point of the template to the radius run out of the arm rest shall be measured with a steel tape and documented in Appendix B (see Figure 2). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE EN
24、GINEERING STANDARDS GMW14457 Copyright 2012 General Motors Company All Rights Reserved August 2012 Page 4 of 14 Figure 2: Test of Armrest Surface 4.4 Haptics. The tactile characteristics of the side-panel trim and associated parts shall be tested and subjectively evaluated according to GMW14264. Req
25、uired rating as follows: Grained Plastic Parts: Rating 6 Painted Plastic Parts: Rating 7 Covered Parts: Rating 8 4.5 Noise. No disturbing noises (e.g., chattering, squeaks and rattles) shall occur when opening and closing the tailgate/trunk lid or touching the side-panel trim, especially in the cont
26、act area to the sheet metal. 4.5.1 No disturbing noises and vibrations shall be emitted by the side-panel trim and associated parts in the stationary vehicle with the engine running or when driving on motorways, federal roads and cobble stones (e.g., Dudenhofen Test Center Rheinstrae, Belgian blocks
27、 or equivalent). 4.6 Dimensional Stability of the Side-Panel Trim. A gauge shall be used for measuring the deformation distance. The gauge shall be attached to a tripod fastened in the load compartment (see Figure 3). Provided by IHSNot for ResaleNo reproduction or networking permitted without licen
28、se from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14457 Copyright 2012 General Motors Company All Rights Reserved August 2012 Page 5 of 14 Figure 3: Tripod Fastened to the Load Compartment Note Key: 1 = FPressure 4.6.1 Measurement points may vary depending on the trim panel and the vehicle. The
29、definition shall be performed specifically for every vehicle. The measuring points shall be located in the areas mostly used by the customer (armrest, handles, covers/flaps etc.), as shown in Figure 4. Figure 4: Location of Measuring Points (Example) 4.6.2 The gauge shall be located perpendicular to
30、 the side-panel trim and be reset to zero. 4.6.3 The tensile/compression gauge with piston (10 mm diameter) shall be used for force application. The force FD shall be applied perpendicular to the surface of the side-panel trim. The force application point shall be located 20 mm next to the measuring
31、 point and in same height. 4.6.4 The load shall be performed with forces of 50 N and 100 N. The deformation of the side trim panel shall be documented after each load. Three (3) readings shall be documented per load and measuring point. Provided by IHSNot for ResaleNo reproduction or networking perm
32、itted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14457 Copyright 2012 General Motors Company All Rights Reserved August 2012 Page 6 of 14 4.6.5 The maximum permissible deformation s3 shall be taken from the relevant drawing. 4.6.6 Remaining deformations of the components afte
33、r the test are not permitted. 4.7 Dimensional Stability during Temperature Load. 4.7.1 Measurement of the Dimensional Stability in the Parapet Area. For the measurement of the dimensional stability of the side-panel trim in the parapet area a stud shall be connected to a rectangular piece of wood. 4
34、.7.2 The contour of the parapet (assembly dimensions) shall be transferred to the rear side window at +23 5 C. The area of the line on the glass shall be covered by an adhesive film before the test (principle shown in Figure 5). Figure 5: Transfer of Contour 4.7.3 The area of the parapet shall be he
35、ated to a surface temperature of +80 3 C. The temperature shall be kept for 30 minutes. 4.7.4 As described above, the contour of the heated part shall be transferred to the glass. 4.7.5 After cooling to a temperature of +23 5 C the contour shall be transferred to the screen again. 4.7.6 The maximum
36、distance between first and second as well as first and third contour line shall be measured and documented (positive sign for upwards curve, negative sign for downwards curve). 4.7.7 The negative influence to the appearance of a possible deformation during and after the test shall be checked. 4.7.8
37、The maximum permissible deformation s4 at a temperature increase from +23 5 C to +80 3 C shall not be exceeded. 4.7.9 The permissible permanent deformation shall be in a range of -1 mm spl4 +1 mm. 4.8 Misuse Tests. 4.8.1 Energy Absorption. In the case of mounted electronic parts behind the trim pane
38、ls one of the following tests shall be done within a temperature range of +80 3 C to -30 3 C. The trim attachment shall be equivalent to the mounting position with sheet metal contact. 4.8.1.1 Spring Bolt Test. The test shall be performed with a spring bolt testing device with electronic evaluation
39、(see Figure 6). 4.8.1.1.1 Area of Electronic Components. Sensitive electronic modules have to be prevented against energy impact. Areas of the side trim panel, which cover electronic modules, have to resist a spring bolt test. The energy needed for the test is 30 J (a suitcase with a weight of 12 kg
40、, a lateral acceleration of about 0.9 g and an acceleration distance of 30 cm) adjust at the control unit of the test device. The distance between the preloaded bolt and the side-panel trim shall be 160 mm. No damage or constraint of electronic function of the modules is allowed (damages at the side
41、 panel trim or fixation are accepted). 4.8.1.1.2 Area of Lid, Cover, Etc. For areas with lids, covers, or similar an impact energy of 15 J is required. The distance between the preloaded bolt and the side-panel trim shall be 160 mm. No cracking or permanent visible deformation to the customer eyes i
42、s permissible. Full function of the part shall not be compromised. 4.8.1.1.3 Speaker Grilles. Speaker grilles are specified according to GMW16586. The energy needed for the test is 30 J (a suitcase with a weight of 12 kg, a lateral acceleration of about 0.9 g and an acceleration distance Provided by
43、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14457 Copyright 2012 General Motors Company All Rights Reserved August 2012 Page 7 of 14 of 30 cm) adjust at the control unit of the test device. The distance between the prel
44、oaded bolt and the side-panel trim shall be 160 mm. 4.8.1.2 Falling Ball Testing Device. As an alternative test to the Spring Ball Test the Falling Ball Test according to GMW14093 can be done. Deviating to the procedure the mass of the ball shall be increased to 3000 g and the drop height shall be 1
45、 m to reach the energy of 30 J. Figure 6: Setup 4.9 Test of Fasteners. The fastening elements shall be tested at a temperature of +23 5 C (average temperature in plants and workshops). 4.9.1 Bolted Joints. The bolted joints on side trim panel (below) and inner handle (after removing the trim panel)
46、shall be tested as follows. 4.9.1.1 The screws shall be tightened with the specified torque. 4.9.1.2 The parts shall be stored 48 h at +80 3 C. 4.9.1.3 The loosening torque shall be measured with a torque wrench. 4.9.1.4 The loosening torques of the bolted joints shall be 30% maximum below the nomin
47、al tightening torque. 4.9.1.5 The maximum torque shall be documented in Appendix E. 4.9.2 Clip Joints. Destructive tests shall be performed with new parts. 4.9.2.1 Mounting and Pull off Forces in Sheet Metal. The clips shall be pushed into the single part and removed by the pull-off device of the te
48、nsile/compression gauge (see Figure 7). Mounting forces and pull-off forces shall be documented. The pull-off force of the clips FZ5 out of the sheet metal shall be in a range of 100 to 200 N. The permissible mounting force FD5 in the sheet metal shall be 70 N maximum. Provided by IHSNot for ResaleN
49、o reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14457 Copyright 2012 General Motors Company All Rights Reserved August 2012 Page 8 of 14 Figure 7: Mounting Force FD5 and Pull off Force FZ5 4.9.2.2 Mounting and Demounting in the Retainer. The tensile
