New tunable mechanical monolithic horizontal seismometer for low frequency seismic noise measurement

F. Acernese; R. De Rosa; G. Giordano; R. Romano; S. Vilasi; F. Barone

doi:10.1117/12.846356

1 April 2010 New tunable mechanical monolithic horizontal accelerometer for low frequency seismic noise measurement

F. Acernese, R. De Rosa, G. Giordano, R. Romano, S. Vilasi, F. Barone

Proceedings Volume 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010; 76472X (2010) https://doi.org/10.1117/12.846356
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

Abstract

This paper describes a version of the mechanical horizontal monolithic sensor for geophysical applications developed at the University of Salerno. The instrument is basically a monolithic tunable folded pendulum, shaped with precision machining and electric-discharge-machining, that can be used both as seismometer and, in a forcefeedback configuration, as accelerometer. It is a very compact instrument, very sensitive in the low-frequency seismic noise band, with a very good immunity to environmental noises, whose main characteristics are the tunability of the resonance frequency, a high mechanical quality factor and a very sensitive interferometric readout. In this paper we describe the results of the first tests performed on this new instrument, comparing the results with a previous version of the instrument.

Citation Download Citation

F. Acernese, R. De Rosa, G. Giordano, R. Romano, S. Vilasi, and F. Barone "New tunable mechanical monolithic horizontal accelerometer for low frequency seismic noise measurement", Proc. SPIE 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010, 76472X (1 April 2010); https://doi.org/10.1117/12.846356

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