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

作者：Choi Won yeong; Yoo Seong yeol; Cha Ki up; Cho Chang ki; Kim Sung soo; Noh Myounggyu^*

来源：Journal of Mechanical Science and Technology, 2011, 25(12): 2987-2993.

DOI：10.1007/s12206-011-0821-1

• Accelerometers
• Double integration
• Mechanical filters
• Wavelet decomposition

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 drills 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.

• 出版日期2011-12