Article

# Measuring displacement signal with an accelerometer

Journal of Mechanical Science and Technology (Impact Factor: 0.7). 06/2010; 24(6):1329-1335. DOI: 10.1007/s12206-010-0336-1

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**ABSTRACT:**An effective and simple way to develop equations from impact strain signals was proposed. Little research has been performed in this area, but this equation is very important for evaluating input signals in finite element analysis impact tests and for obtaining additional information on material deformation and fracture processes under impact loading. For this purpose, dynamic impact responses were examined through signals obtained from a strain gauge installed on an impact striker connected to a data acquisition system. Aluminium 6061-T6 was used to extract strain responses on the striker during Charpy impact testing. Statistical analysis was performed using the I-kaz method, and curve fitting equations based on the equation for vibration response under a non-periodic force were used to evaluate the Charpy impact signals. The I-kaz coefficients and curve fitting equations were then compared and discussed with related parameters, such as velocities and thicknesses. Velocity and thickness were found to be related to the strain signal patterns, curve fitting equations and I-kaz coefficients. The equations developed using this method had R 2 values greater than 97.7%. Finally, the constructed equations were determined to be suitable for evaluating Charpy impact strain signal patterns and obtaining additional information on fracture processes under impact loading.Journal of Central South University. 02/2014; 21(2):600-609. - [Show abstract] [Hide abstract]

**ABSTRACT:**Vibration measurement and its real-time graphical representation is often required for analysis of physical conditions of machines, engines as well as in scientific researches, earth-quake amplitude measurement etc. This project work was intended to develop a system for measurement and real-time visualization of vibration. An electronic accelerometer sensor facilitates the vibration sensing procedure. The measured value is then transmitted to the visualization software installed in a personal computer which provides quantitative and qualitative information about the vibration phenomena in addition with a real-time graphical visualization feature. Two test cases were selected to verify the performance of the system. The first one was implemented to visualize and measure vibration parameters of a simple plastic stand, and the second one was intended to test the system performance on an induction motor for measurement and visualization of its horizontal vibration parameters. The performance analysis in the above mentioned cases confirms the stability and reliability of the system in vibration analysis for frequency range up to 5 kHz. This concludes to a low cost vibration analysis system for uses in medium range vibration analysis like earth quake monitoring, machine vibration level monitoring etc. Though there are many available vibrations analysis systems are available, this paper work is intended to derive the process of building a low cost PIC microcontroller and C# .NET based vibration analysis system for general purpose uses like laboratory equipment or study material from commercially available equipmentInternational Conference on Electrical Engineering and Information & Communication Technology (ICEEICT) 2014; 04/2014 -
##### Article: New methodology for accelerating the four-post testing of tractors using wheel hub displacements

Biosystems Engineering 11/2014; · 1.37 Impact Factor

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