| Summary: | This study presents the traffic induced ground vibration acquisition capabilities of smartphone sensors. Ground vibration is one of prime interests to geotechnical and geological engineering. Measurement and analysis of ground vibrations is a necessary procedure to determine their effect on structures and humans. While there are a number of smartphone apps that can be used in professional vibration measurement, there has been no study on their applicability to measure small amplitude ground vibrations such as traffic induced ground vibration. The characteristics of a smartphone sensor were studied based on the literature and collected data. Range of measurement, frequency acquisition, resolution, sensitivity and disturbance due to the noise of the sensor were evaluated. The measurement range and sensitivity of the smartphone sensor enabled the full acquisition of triaxial traffic induced ground vibration amplitudes and frequency. However, the resolution of the smartphone sensor was low and the disturbance due to noise vibration was found considerable for smaller vibration amplitudes. Heavy-weight vehicles induce higher vibration amplitudes and the disturbance due to noise was smaller. For improved quality data, measured amplitudes have to lie clearly above the noise.
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