Repetitive shock vibration risk assessment for gunshots

Authors

  • Enrico Marchetti National Compensation Authority (INAIL), Research Centre, Dept. of Occupational Hygiene, Via di Fontana Candida 1, Monte Porzio Catone (Roma) 00040, Italy
  • Raoul Di Giovanni National Compensation Authority (INAIL), Research Centre, Dept. of Occupational Hygiene, Via di Fontana Candida 1, Monte Porzio Catone (Roma) 00040, Italy
  • Angelo Tirabasso Univ. of Roma Tor Vergata, Dept. of Otorhinolaringology, Viale Oxford 81, 00133 Roma, Italy
  • Alessandro Lunghi National Compensation Authority (INAIL), Research Centre, Dept. of Occupational Hygiene, Via di Fontana Candida 1, Monte Porzio Catone (Roma) 00040, Italy
  • Federica Morgia National Compensation Authority (INAIL), Research Centre, Dept. of Occupational Hygiene, Via di Fontana Candida 1, Monte Porzio Catone (Roma) 00040, Italy

Keywords:

Accelerometers, Frequency bands, Computation time, Exposure assessment, Frequency domains, Frequency ranges, Indicator values, Low frequency band, Matlab- software, Shock vibration, Time duration, Time windows, Vibration exposure, Wide spectrum

Abstract

Processing measures of typical shock vibration such as those of firearms was conducted with the help of ISO/TS 15694:2004 standard. Triaxial acceleration on the butt of three Beretta firearms were measured with an accelerometer mounted in an adaptor. Analysis and processing was done with MatLab software and the processing rms and root mean quad (rmq) parameters were proposed with a computation time window of either 3 or 30 seconds. Firing with firearms, as it is expected from impulsive events, encompasses a far larger frequency range than usual vibration exposure. The results show widening the time window reduces the indicator value. The effect of the fourth power (rmq) is not that of enhancing the exposure assessment, instead it depresses it. This can be attributed to the impulsive shot and its very short time duration, which implies a wide spectrum in frequency domain and acceleration values below 1m/s2 in low frequency bands.

Additional Files

Published

2011-06-01

How to Cite

1.
Marchetti E, Di Giovanni R, Tirabasso A, Lunghi A, Morgia F. Repetitive shock vibration risk assessment for gunshots. Canadian Acoustics [Internet]. 2011 Jun. 1 [cited 2024 Dec. 5];39(2):102-3. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2378

Issue

Vol. 39 No. 2 (2011)

Section

Proceedings of the Acoustics Week in Canada

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