| Presentation | 2014-08-22 An Evaluating Method for Fundamental Dynamical Parameters of Objects on a Printed Circuit Board (PCB) (6) : The effect by application time of external force Shin-ichi WADA, Keiji KOSHIDA, Hiroaki KUBOTA, Koichiro SAWA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Authors have obtained the transient response and steady-state one using theoretical inputs developed by Fourier series and the analytical outputs when input waveforms are sinusoidal and rectangular. Following the characteristics of input waveform, the kinetic nature of the system has the effects on the output waveform, which are remarkable in case of rectangular input. It has been shown that the time-series force, which is obtained by hammering oscillation mechanism, is approximated to delta function, and that quasi-impulsive response occurs by the force if the value "r(=τ/T)" of rectangular waveform is smaller than 0.005. In this paper, they extend the above theoretical discussion on the characteristics between inputs and outputs in addition to a quasi-impulsive wave whose application time is finite but very short. Next they consider theoretically and experimentally the characteristics of the output against the quasi-impulsive input when the external impulsive force applies to the system. In addition, they discuss a possible analysis for the process of degradation phenomenon of electrical contacts by examining the value "r". And it is shown that there are the dynamical parameters to be evaluated and the process of the degradation phenomenon to be analysed. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | electrical contact / micro-oscillation / Fourier analysis / collision mechanism / load / contact time / impulse |
| Paper # | R2014-49,EMD2014-54,CPM2014-69,OPE2014-79,LQE2014-53 |
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| Conference Information | |
| Committee | OPE |
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| Conference Date | 2014/8/14(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Optoelectronics (OPE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An Evaluating Method for Fundamental Dynamical Parameters of Objects on a Printed Circuit Board (PCB) (6) : The effect by application time of external force |
| Sub Title (in English) | |
| Keyword(1) | electrical contact |
| Keyword(2) | micro-oscillation |
| Keyword(3) | Fourier analysis |
| Keyword(4) | collision mechanism |
| Keyword(5) | load |
| Keyword(6) | contact time |
| Keyword(7) | impulse |
| 1st Author's Name | Shin-ichi WADA |
| 1st Author's Affiliation | TMC System Co. Ltd.() |
| 2nd Author's Name | Keiji KOSHIDA |
| 2nd Author's Affiliation | TMC System Co. Ltd. |
| 3rd Author's Name | Hiroaki KUBOTA |
| 3rd Author's Affiliation | TMC System Co. Ltd. |
| 4th Author's Name | Koichiro SAWA |
| 4th Author's Affiliation | Nippon Institute of Thechnology |
| Date | 2014-08-22 |
| Paper # | R2014-49,EMD2014-54,CPM2014-69,OPE2014-79,LQE2014-53 |
| Volume (vol) | vol.114 |
| Number (no) | 186 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |