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  Volume 4, Number 1, January 2019 , pages 1-13

Comparison of smartphone accelerometer applications for structural vibration monitoring
Paul Cahill, Lucy Quirk, Priyanshu Dewan and Vikram Pakrashi

    Recent generations of smartphones offer accelerometer sensors as a standard feature. While this has led to the development of a number of related applications (apps), there has been no study on their comparative or individual performance against a benchmark. This paper investigates the comparative performance of a number of smartphone accelerometer apps amongst themselves and to a calibrated benchmark accelerometer. A total of 12 apps were selected for testing out of 90 following an initial review. The selected apps were subjected to sinusoidal vibration testing of varying frequency and the response of each compared against the calibrated baseline accelerometer. The performance of apps was quantified using analysis of variance (ANOVA) and test of significance was carried out. The apps were then compared for a realistic dynamic scenario of measuring the acceleration response of a bridge due to the passage of a French Train à Grande Vitesse (TGV) in a laboratory environment.
Key Words
    accelerometer; mobile app; train-bridge dynamics; experimental data; analysis of variance (ANOVA); fast fourier transform (FFT)
Paul Cahill and Vikram Pakrashi: Dynamical Systems & Risk Laboratory, School of Mechanical and Materials Engineering and Centre for Marine and Renewable Energy Ireland (MaREI), University College Dublin, Dublin, Ireland
Lucy Quirk: Centre for Marine and Renewable Energy Ireland (MaREI), Environmental Research Institute, University College Cork, Cork, Ireland
Priyanshu Dewan: Indian Institute of Technology-Benaras Hindu University, Benaras, India

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