Acceleration Measurements in a High G Environment

Pilcher, James O.

doi:10.23919/acc.1982.4787997

Cited by 2 publications

(2 citation statements)

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“…Measurements must be immune to the high frequency stress waves due to explosion. Several techniques for measuring the lateral vibrations of a gun tube have been reported [1][2][3]. Proximity probes tend to have a very small detection range, which make them unsuitable for measuring small vibrations as well as large recoil motion.…”

Section: Introductionmentioning

confidence: 99%

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Methods of measuring the vibrations of a gun tube under impulse loads

Choi

Yoo

Cha³

et al. 2011

J Mech Sci Technol

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In many respects, accelerometers are convenient for measuring the lateral vibrations of a gun tube under impulse loads. Reliable measurements by accelerometers must overcome two issues: exceedingly large acceleration at high frequencies due to stress waves, and the elimination of drifts accumulating through the integration of acceleration signals. In this paper, we use a mechanical filter that reduces the effect of stress waves. Also, we propose a new double integration algorithm based on multi-resolution wavelet decomposition. Using a test-rig, we measure the vibration characteristics of commercially-available damping materials. Based on the test results, we design a mechanical filter and experimentally verify the performance of the filter. The proposed double integration algorithm is shown to be as effective as other existing algorithms without arbitrary selection of parameters.

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Section: Introductionmentioning

confidence: 99%

“…We also propose a new signal processing method for double integration using wavelet decomposition to obtain the displacement signals from the acceleration signals. Mechanical filters have been used in acceleration measurements [1][2][3]. However, these prior efforts provide little information on how the filter is designed.…”

Section: Introductionmentioning

confidence: 99%