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Current Trends in Biomanufacturing focuses on cutting-edge research
regarding the design, fabrication, assembly, and measurement of
bio-elements into structures, devices, and systems. The field of
biomaterial and biomanufacturing is growing exponentially in order
to meet the increasing demands of for artificial joints, organs and
bone-fixation devices. Rapid advances in the biological sciences
and engineering are leading to newer and viable resources, methods
and techniques that may providing better quality of life and more
affordable health care services. The book covers the broad aspects
of biomanufacturing, including: synthesis of biomaterials; implant
coating techniques; spark plasma sintering; microwave processing;
and cladding, powder metallurgy and electrospinning. The
contributors illustrate the recent trends of biomanufacturing,
highlighting the important aspects of biomaterial synthesis, and
their use as feedstock of fabrication technologies and their
characterization, along with their clinical practices. Current
Trends in Biomanufacturing updates researchers and scientists the
novelties and techniques of the field, as it summarises numerous
aspects of biomanufacturing, including synthesis of biomaterials,
fabrication of biomedical structures, their in-vivo/ in-vitro,
mechanical analysis and associated ISO standards.
Aluminium (Al) based metal matrix composites (MMC) have many
potential engineering applications. There has been a critical need
for casting of cost-effective MMC. Not much work hitherto been
reported for casting of Al based MMC with vacuum moulding. An
approach to macro-model the micro hardness and dimensional accuracy
for casting of MMC of Al and its alloys have been proposed and
applied. Relationship between micro hardness, dimensional accuracy
and other parameter has been deduced by using Taguchi's technique
L9 orthogonal array (OA). Results indicate that the hardness of MMC
developed depends significantly on the component volume, pouring
temperature and composition. The comparison with experimental
results will also serve as future validation of the model.
The purpose of the present study is to compare investment castings
prepared with conventional wax based patterns and Acrylonitrile
Butadiene Styrene (ABS) based patterns for bio-medical implant (hip
joint). Starting from the identification of component, patterns
with three different types of pattern materials (namely: wax, ABS
and ABS+wax) were prepared under different experimental conditions.
Dimensional measurements were made on the final castings prepared.
The results of study highlights that casting with ABS based pattern
gives better dimensional accuracy (under given experimental
conditions) and component hardness was also acceptable as per
application requirement.Final components prepared are acceptable as
per ISO standard UNI EN 20286-I (1995). Castings prepared at
proposed parametric settings have been studied for functional
validation of the parts. Also the study suggested that at proposed
parametric settings the process was found to be under statistical
control.
In the present research work experimental investigations has been
made for development of Al- Al2O3 MMC (metal matrix composite) by
combining stir casting and ABS (acrylonitrile butadiene styrene)
replica based investment casting. The research started with
selection of the standard geometrical component (cube for the
present study).The research highlights the effect of reinforcement
Al2O3 on mechanical and metallurgical properties of Al based MMC.
The input parameters of process are material composition, layer
combination and pouring temperature in investment casting. The
study highlights the percentage contribution of different input
parameters on micro hardness and dimensional accuracy of Al- Al2O3
MMC.
In the present research work effort has been made to study the
tribological behavior of dual particle size (DPS) and triple
particle size (TPS) of Al2O3 reinforced Al-MMCs (prepared by vacuum
moulding process). The study started with selection of the
component for industrial application. The study highlights the
effect of reinforcement in form of DPS and TPS on mechanical and
metallurgical properties of Al- Al2O3 MMCs. The input parameters of
process are composition of MMC, vacuum moulding silica sand grain
size, vacuum pressure and component volume. The study highlights
the percentage contribution of different input parameters on micro
hardness, dimensional accuracy and wear properties of Al- Al2O3
MMCs.
In the present research work effort has been made to study the use
of Acrylonitrile-Butadine-Styrene (ABS) replicas in investment
casting applications.The research start with selection of the
component for industrial application with an idea of improvement in
accuracy and hardness of the component. The input parameters are
production time in Fused Deposition Modeling (FDM), number of
layers, layer combination and different materials in investment
casting.The study highlights the percentage contribution of
different input parameters on micro hardness and dimensional
accuracy.
In the present work new replication techniques for a biomedical
component having a real 3D shape has been introduced. A dynamic
condylar screw (DCS) plate was selected as one of a real 3D
biomedical implant for this study. The DCS plate, made of ABS
material, was fabricated as a master pattern by fused deposition
modelling (FDM) method. After preparation of master pattern mould
was fabricated with vacuum moulding process. Finally metal matrix
composite (MMC) of Al and Al2O3 has been prepared in vacuum mould
for fabrication of DCS plate. This study highlights the replication
procedure of DCS plate in detail from the master pattern to a final
product with some investigation on mechanical and metallurgical
properties.
Modern-day technologies are described by very high-level of
computerization, deploying composite and sophisticated machines.
The objective behind is to achieve higher productivity and profit
in an organization. Therefore it is always desirable to achieve
maximum calculated output from every machine in the industry.
Reduction in downtime is a step towards getting a maximum output
from machines by improving their reliability and availability. In
the present research work a systematic approach for Maintenance
Planning and Control (as Modified Six Step Method) has been applied
on one of the critical Unit, Boiler Section of Thermal Plant as a
Case Study. Down time has been reduced by analyzing the failure
pattern of critical parts of all types of equipment. The study
suggested that with proposed maintenance plan, downtime of a
thermal plant can be reduced by 430 hrs over a period of three
years and monetary benefit to the organization due to new
maintenance policy is of the order of Rs. 18, 00, 00, 000 to
36,00,00,000 INR for the span of three years.
In present work advancement in replication techniques for a
biomedical component having a real 3D shape has been introduced. A
hip joint was selected as one of a real 3D biomedical implant for
this study. A hip joint, made of ABS material, was fabricated as a
master pattern by fused deposition modelling (FDM) method. After
this mold was made by the deposition of Primary, Secondary and
Tertiary coatings with the addition of (1- 2cm in length) nylon
fiber of 1.5D as per the Taguchi L9 control log of
experimentation.This study outlines complete replication procedure
of hip joint in detail from the master pattern to a final product
with some investigation on mechanical and metallurgical properties.
The results of study highlights that during shell production, fiber
modified shells had a much reduced drain time. This gave a higher
ceramic retention rate after dipping and led to a thicker coat
compared to that produced without fiber addition.
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