1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology Standards TEST PROCEDURE OF TORSIONAL STRENGTH FOR SEAT BACK Do Not Use on New Programs. Being Replaced by GMW14608 EDS-T-4512 ISSUED DATE: 1998. 02. 26 REVISED DATE: 2008. 10. 15 VERSION: 3 (Superceded) EDS-T-4512TEST PROCEDUR
2、E OF TORSIONAL STRENGTH FOR SEAT BACK PAGE: 1/2 ISSUED DATE: 1998. 02. 26 REVISED DATE: 2008. 10. 15 VERSION: 3 GM DAEWOO Auto & Technology Note: This standard may be applied only for current project (incl. T255 Program). It is Superceded for all future projects and replaced by GMW14608. 1. PURPOSE
3、This procedure verifies the torsional strength of the front seat back. 2. SCOPE All types of seats equipped with side recliners. 3. TEST SAMPLES Minimum three new seat frames or assembled seats 4. TEST EQUIPMENT AND JIG 4.1. Jig for fitting seats in actual field conditions 4.2. Leveling surface tabl
4、e 4.3. Measuring instruments for loads and length The measuring instruments shall measure the load and the length displacement with maximum resolution of 0.5 kgf and 0.5 mm respectively. 4.4. Weight loading equipment Equipment capable of loading weight greater than 200 kgf 4.5. Recorder A recorder c
5、apable of recording the load and the displacement in load vs. displacement graphs 4.6. Weight loading jig A steel sheet with diameter of 100 mm or a wire that is not subject to deformation upon the weight loading 5. METHODS AND SPECIFICATIONS OF TEST 5.1. Preparation 5.1.1. Fit the seat-fixing jig o
6、n the leveling surface table, and then mount a seat on the jig. 5.1.2. Set the angle of the seat back to the value specified in the design standard. If the position in the design standard is unknown, set the angle at 25 28 backward. 5.1.3. Set the adjuster systems of the seat as follows: (1) Guide r
7、ail: the center position EDS-T-4512TEST PROCEDURE OF TORSIONAL STRENGTH FOR SEAT BACK PAGE: 2/2 ISSUED DATE: 1998. 02. 26 REVISED DATE: 2008. 10. 15 VERSION: 3 GM DAEWOO Auto & Technology (2) Height adjuster system: the lowermost position 5.2. Test Method Load the weight of 120 kgf on the end point
8、(R) (fig. 2) of the upper crossbar hinge on the back frame in the direction shown in fig. 1. Measure the displacement and the load data in the displacement vs. load graphs (Measure the displacement at the weight loading point in the loading direction). 5.3. Evaluation 5.3.1. The permanent transformation shall be smaller than 65 mm. 5.3.2. The transformation shall satisfy the conditions in fig. 3. Fig. 1 Fig. 2 Fig. 3
