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GMKOREA EDS-T-2511-2008 FATIGUE TEST PROCEDURE OF STABILIZER BAR.pdf

1、GM DAEWOO Auto & Technology EDS Engineering, GM DAEWOO Auto & Technology Standards FATIGUE TEST PROCEDURE OF STABILIZER BAR Do Not Use on New Programs. Being Replaced by GMW14248 EDS-T-2511 ISSUED DATE: 1990. 04. 24 REVISED DATE: 2008. 10. 23 VERSION: 3 (Superceded) EDS-T-2511FATIGUE TEST PROCEDURE

2、OF STABILIZER BAR PAGE: 1/5 ISSUED DATE: 1990. 04. 24 REVISED DATE: 2008. 10. 23 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 It is Superceded for all future projects and replaced by GMW14248. 1. PURPOSE Thestandardaimsatdet

3、erminingthefatiguelifeoftheproductpopulationbyspecifying laboratoryfatiguetestproceduresofstabilizerbars. 2. SCOPE This standard applies to the laboratory fatigue test of tilting drive type and torsion drive type stabilizer bars. 3. TEST EQUIPMENT The device in photo 1 or photo 2 shall be used depen

4、ding on the drive type of stabilizer bars and its composition is as follows. 3.1. Stabilizer bar test stand A device that fixes the sample in the vehicle condition 3.2. Geared motor and eccentric drive A device with adjustable vibration amplitude according to test stress or angle 3.3. Cycle counter

5、3.4. Shut off device A device that automatically cuts off power source in case of stabilizer failure 3.5. Strain gage and amplifier A device to measure test stress Photo 1. Tilting drive type EDS-T-2511FATIGUE TEST PROCEDURE OF STABILIZER BAR PAGE: 2/5 ISSUED DATE: 1990. 04. 24 REVISED DATE: 2008. 1

6、0. 23 VERSION: 3 GM DAEWOO Auto & Technology Photo 2. Torsion drive type 4. TEST METHOD 4.1. Samplemountingmethod 4.1.1. Mountingofsamplesshallconformtodesignpositionandvehiclecondition. Fig.1Tiltingdrivetype (Ex,470frontaxlesystem) Fig.2Torsiondrivetype (Ex,470rearaxlesystem) 4.1.2. When mounting t

7、he sample, production parts with which the stabilizer is mounted shall be used. 4.2. Testcondition 4.2.1. Adjustthestrokesothatthestressorangleindicatedonthedrawingisobtained byattachingaX : Stroke D : Distance between tilting center and ball joint center EDS-T-2511FATIGUE TEST PROCEDURE OF STABILIZ

8、ER BAR PAGE: 3/5 ISSUED DATE: 1990. 04. 24 REVISED DATE: 2008. 10. 23 VERSION: 3 GM DAEWOO Auto & Technology straingageonthecenterofthestabilizerbar. 4.2.2. Fixthetestfrequencyat3Hz. 4.2.3. Runthetestuntilthesamplefails,orlimitthemaximumrunningcycleto3times PU90%cycleindicatedonthedrawing. 4.2.4. Sa

9、mplesizeisabout6to10. 4.3. Testprocedure 4.3.1. Removecoatingonbothendsofthestabilizerbar. 4.3.2. Attachastraingageontheupperandlowercenterportionsofthestabilizerbar. 4.3.3. Connecttheterminalofthestraingagetotheamplifier. 4.3.4. Mountthestabilizerbartothefixture. 4.3.5. Adjustthestrokesothatstresso

10、rangleindicatedonthedrawingisobtained. 4.3.6. Connect a low voltage type shut off device to both ends of the stabilizer bar whose coating isremovedtosensefailure. 4.3.7. Setthecyclecounterto3timesthecycleindicatedonthedrawingbeforerunningthe test. 5. EVALUATION METHOD 5.1. Apply survival probability

11、 evaluation method using logarithmic normal probability papers (Form 1. Logarithmic normal probability papers.) 5.2. In case of using suspension parts(control arm) as vehicle parts, include damage to the rubber and suspension parts in the test report. EDS-T-2511FATIGUE TEST PROCEDURE OF STABILIZER B

12、AR PAGE: 4/5 ISSUED DATE: 1990. 04. 24 REVISED DATE: 2008. 10. 23 VERSION: 3 GM DAEWOO Auto & Technology Form 1. Logarithmic normal probability papers EDS-T-2511FATIGUE TEST PROCEDURE OF STABILIZER BAR PAGE: 5/5 ISSUED DATE: 1990. 04. 24 REVISED DATE: 2008. 10. 23 VERSION: 3 GM DAEWOO Auto & Technology

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