Noise and vibration study of commercial conveyor system
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Date
2018-05
Authors
Kogulan Rajasagaran
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Abstract
Chain conveyors are one of the machines used in various type of industries as they provide
a convenient mean of transport for goods within the industry. The chain conveyor used in
this study is FlexMove FL 150 series chain conveyor which is provided FlexMove System
Sdn. Bhd. This particular chain conveyor encounters vibration and noise problem. When
the conveyor is under operation, the vibration and noise issue found in the conveyor system
contributes to an unhealthy working environment for operators. The aim of this project is
to attenuate the vibration and noise level of the whole structure at the operating frequency
range. In this project, tuned damped dynamic vibration absorber (DVA) was deployed on
the conveyor structure to attenuate the vibration and noise level. The damped DVA was
designed as a cantilever beam and together with viscoelastic material as damper.
Microflown Scan & Paint sound measurement was conducted to determine sound pressure
levels from the structure. For vibration signal acquisition from the structure, LK-G Laser
Head displacement experiment, Modal Analysis and Spectral Analysis were conducted.
Modal analysis was the platform to execute structural dynamic modification through
simulation. The tuned damped DVA was attached to the conveyor structure and the
attenuation of vibration and noise level is assessed by repeating the measurements. Modal
analysis of the improved conveyor proves that the vibration amplitude is reduced by 9.59%
with the attachment of tuned damped DVA. The acoustic measurements show that the
improved conveyor endures maximum sound pressure level reduction of 2.5dB(A).