Prediction of vibration response of a PCB under force

Pao Yue-kong Library Electronic Theses Database

Prediction of vibration response of a PCB under force

 

Author: Wong, Wai-ki
Title: Prediction of vibration response of a PCB under force
Degree: M.Sc.
Year: 1994
Subject: Printed circuits
Frequency response (Dynamics)
Hong Kong Polytechnic -- Dissertations
Department: Multi-disciplinary Studies
Pages: vi, 92 leaves : ill. ; 30 cm
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b1140655
URI: http://theses.lib.polyu.edu.hk/handle/200/4149
Abstract: Modern electronic systems are subjected to many different forms of vibration and shock over a wide range of frequency and acceleration level during both of the fabrication and the operation. A failure of a system may cause losing of millions of dollars and many invaluable human resources. Naturally, it is required to find a suitable way or method to prevent any failure to happen especially for the critical systems or components. The aim of this dissertation is to suggest a way for the designer to prevent the severe vibration response of an electrical system such that any potential failure of this system due to the vibration or shock can be identified and then the structure can be analyzed and modified according to the experimental data. In this dissertation, the structure of the electronic system (a plug-in type printed circuit board) has been modelled in the computer such that frequency response of the modification in the structure can be predicted by changing some modal parameters of the original system. Therefore, the structure can be designed to be less sensitive to the vibration according to the computer results. This means that the correction and modification of this system can be done early and the possibility of this system would survive under any expected vibrations and shock during its normal life span is higher.

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