Thesis-2003-Ho.pdf (6.87 MB)
Dynamic ruggedizing of printed circuit boards in harsh environmental conditions using a wide-band dynamic absorber
thesis
posted on 2018-09-19, 14:06 authored by Van-Cuong HoThe existing approaches to ruggedizing inherently fragile and sensitive critical components of
electronic equipment such as printed circuit boards (PCB) for use in hostile industrial and military
environment are either insufficient or quite expensive.
This Thesis addresses a novel approach towards ruggedizing commercially-off-the-shelf PCBs
using a miniature wide-band dynamic absorber aimed at essential suppressing of the resonant
responses of the original structure. The development of an optimisation technique is based on the
dynamic properties of the original system, where the mass, stiffness and damping properties of the
dynamic absorber are chosen in such a fashion to minimise the level of vibration experienced by the
system.
The optimisation procedure relies on the analytical solution and computational resources. The
results of the proposed single-mode and full-mode approximation are proven experimentally under
random vibration. Further study of the dynamic absorber is achieved by considering the system
under swept-sine and shock excitations. This approach eventually focuses on the universal
performance of the optimal dynamic absorber. [Continues.]
History
School
- Mechanical, Electrical and Manufacturing Engineering
Publisher
© V.C. HoPublisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2003Notes
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.Language
- en