Epoxy-polyamide-methyl ethyl ketone laminate systems simulation on the mechanical properties
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Date
2018-06
Authors
Khairunnisa Abdul Aziz
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Abstract
Nowadays, finite element analysis (FEA) have become an interest in research
industry. This is because advances in computer model development and simulation
software facilitate physics-based explorations relying on the principles of mechanics.
Due to the increased capabilities of solvers to accommodate and speedy simulations,
the availability of algorithms to represent various physiological phenomena, and the
development of user interfaces that bring model development to the masses, numerous
contributions have been made through the broad use of modelling and simulation in
research industry.
In this research, the aim of this study is to develop simulation on the properties
of epoxy laminate systems by using ANSYS simulation software. Previously, the
investigation of low velocity drop impact tests on epoxy laminate systems are carried out
by Du Ngoc Uy Lan on a research, ‘Investigation on The Properties of Epoxy-Polyamide Methyl Ethyl Ketone Laminate Systems’ to determine the impact response. Therefore,
for my final year project, the experimental results from the Lan’s research worked are
required to develop simulation on the properties of epoxy laminate systems and to
compare the experimental results obtained from the simulation process with results from
experimental work.
The aim of conducting dynamic FEA simulations was to closely model and
compare the behaviour of the laminates that were tested using the direct impact
experiments. The simulations were to be designed to provide an alternate means to
validate the impact test results and recommend structural modifications if necessary.
A major concern affecting the efficient use of composite laminates is the effect of
low velocity impact damage on the structure. A simulation model of a rigid dart is
impacted on polyamide cured epoxy and multi-layered epoxy (polyamide with methyl
ethyl ketone) which having the different properties of laminate was built using the finite
element analysis, SolidWorks. The model was validated by the comparison between the
numerical results and the experimental results. It was decided to use the ANSYS finite
element analysis software for this step due to its user friendliness and its excellent
combination with the SolidWorks software.
Polyamide epoxy is designed for maximum impact and abrasion resistance.
Epoxy is highly resistant to strong cleaning solutions. This coating may be used for
immersion service in fresh or salt water. Polyamide Epoxy is typically used to coat tanks,
machinery, structural members, tank wagons, floors, walls and boats.
For polyamide-epoxy adduct, the results of the impact strength from the
experimental works can be compared with the energy resulted from the simulation. For
two-layered laminate, the results not showing positive comparison due to the different
properties was collected. From the experiment, the properties were collected from the 0
days storage, which right after the laminate were produced. It is actually, the properties
need to be collected according to the days of the test was conducted which are after the
4 days and 15 days storage. For three-layered laminate, the damaged image can be
compared between experimental and simulation work. It is proven however, that there is
existence of limitation when using simulation.