Wavelet Analysis of Impact Energy Absorption.
スポンサーリンク
概要
- 論文の詳細を見る
In a drop mass test, in which a weight falls onto a piece of silicon gel, the displacement and acceleration of the weight have been measured. The amount of energy absorbed by the gel is determined by the mass of the weight times the area, enclosed by a curve drawn by the data on the displacement-acceleration plane. In this convenient method to study energy absorption properties of such materials, contamination of noise is unavoidable due to its experimental set Up. In this paper, we show that wavelet analysis can be used to reduce noise in a simple way, and to effectively extract information contained in the data. The cut off level is determined by the assumption that the underlying data is expected to be reasonably smooth. We discuss the validity of our method and the reliability of the results. We also discuss that the phase characteristics of the mother wavelet, rather than the cut off characteristics of the associated filter, may have strong effects on the smoothed data, and hence on the determination of the energy absorption.
- 一般社団法人 日本機械学会の論文
一般社団法人 日本機械学会 | 論文
- PREFACE
- Hybrid Vibration Suppression of Flexible Structures Using Piezoelectric Elements and Analog Circuits
- Application of Momentum Exchange Impact Dampers to Forging Machine
- アルミニウム繊維層を設置した流路の熱伝達と圧力損失特性
- 地震荷重下における配管のき裂進展評価手法の提案