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Effect of Sensitivity Variation for Mounting Methods of Accelerometer in Crash Test  

Jang, Won-Ho (GM Daewoo Auto & Technology Co.)
Kim, Ki-Oh (GM Daewoo Auto & Technology Co.)
Beom, Hyen-Kyun (GM Daewoo Auto & Technology Co.)
Kwon, Sung-Eun (GM Daewoo Auto & Technology Co.)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.16, no.6, 2008 , pp. 115-120 More about this Journal
Abstract
There are many typesof accelerometer sensor. There was mainly used high-g accelerometer to obtain data for vehicle in crash test. Accelerometer was mounted on test vehicle with mounting blocks. Test result can be influenced by condition of mounting i.e. bonding material and type of block. These influences can be evaluated to variation of sensitivity in calibration test. In this paper, Calibration test were carried out for 3 types of bonding material i.e. stud, beewax and double side tape. Other factor was taken into consideration by 3-types for mounting block. All test was conducted by sinusoidal signal vibrator up to 4500Hz. In order to investigate influence for sensitivity from different input voltage in the calibrator, the same test was repeated. Test results were compared with standard accelerometer data. Relative sensitivities and phases were showed small difference in sensitivity for bonding materials with one block, but significant one for another block and different input voltage below 1000Hz.
Keywords
Sensitivity; Mounting block; Mounting method; Vehicle crash test; Stiffness; Phase; Vibration exciter; Stud; Beewax; Tape;
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