1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology Standards TEST PROCEDURE OF SEAT FRAME PULSATING FATIGUE DURABILITY Do Not Use on New Programs. Being Replaced by GMW14497 EDS-T-4536 ISSUED DATE: 1998. 06. 30 REVISED DATE: 2008. 04. 04 VERSION: 4 (Superceded) EDS-T-4536TEST P
2、ROCEDURE OF SEAT FRAME PULSATING FATIGUE DURABILITY PAGE: 1/3 ISSUED DATE: 1998. 06. 30 REVISED DATE: 2008. 04. 04 VERSION: 4 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 It is Superceded for all future projects and replaced by GMW1449
3、7. 1. PURPOSE This procedure verifies the durability of the seat frame by simulating loads generated from traveling a vehicle. 2. SCOPE All seats of passenger cars have a recliner 3. TEST SAMPLES Minimum three new assembled seats 4. TEST EQUIPMENT AND JIG 4.1. Jig for fitting seats in actual field c
4、onditions 4.2. Leveling surface table 4.3. Measuring instruments for loads The measuring instruments shall be capable of measuring the load with maximum resolution of 0.5kgf. 4.4. Weight loading jig 3D back pan 5. METHODS AND SPECIFICATIONS OF TEST 5.1. Test method 5.1.1. Remove the trim, the pad an
5、d the spring from the seat cushion to make it in the frame state. 5.1.2. Fit the seat-fixing jig on the leveling surface table, and then mount a seat on the jig. 5.1.3. Set the adjuster systems of the seat as follows: (1) Seat back: Position specified in the design standard (if the design standard u
6、nknown, at an angle of 25 28). (2) Guide rail: Rearmost position (3) Height adjuster system: Uppermost position (4) Other adjuster systems: Positions specified in the design standard 5.1.4. Fit the back pan on the weight loading equipment to load the weight on a position one third from the top of th
7、e seat back as shown in fig. 1. 5.1.5. In case, front seat and 3 separated seat, load the weights in table 1 for 105 cycles. Each cycle consists of EDS-T-4536TEST PROCEDURE OF SEAT FRAME PULSATING FATIGUE DURABILITY PAGE: 2/3 ISSUED DATE: 1998. 06. 30 REVISED DATE: 2008. 04. 04 VERSION: 4 GM DAEWOO
8、Auto & Technology step 1 through 9. 5.1.6. In case, 60% rear seat, load the 1.8 times weight in table 1 for 53cycles. Each cycle consists of step 1 through 9. 5.1.7. In case, 50% rear seat, load the 1.5 times weight in table 1 for 53cycles. Each cycle consists of step 1 through 9. 5.1.8. In case, ta
9、xi seat, load the weight in table 1 for 160 cycles. Each cycle consists of step 1 through 9. 5.1.9. The loading speed of a single cycle should be 60 CPM. Table 1 Step Load (N) Cycle 1 75 500 2500 2 75 600 360 3 75 750 66 4 75 960 34 5 75 1500 1 6 75 1100 30 7 75 1250 22 8 75 1320 4 9 75 1400 4 Figure 1 EDS-T-4536TEST PROCEDURE OF SEAT FRAME PULSATING FATIGUE DURABILITY PAGE: 3/3 ISSUED DATE: 1998. 06. 30 REVISED DATE: 2008. 04. 04 VERSION: 4 GM DAEWOO Auto & Technology 5.2. Evaluation 5.2.1. Any adjuster system shall be free of problem. 5.2.2. Any structure shall be free of damage or crack.
