Infomatica, as it stands today, is a manifestation of our values, toil, and dedication towards imparting knowledge to the pupils of the society. Visit us: http://www.infomaticaacademy.com/
Plastic manufacturing "forming and shaping plastics"Ayush Mathur
how plastic products are manufactured?
what are the processes involved in manufacturing of these products?
what are the various machine tools used?
what are the various types of plastics and what is resin?
what are the diffrent steps in manufacturing?
Get all these answers in this presentation.
Ekeeda Provides Online Engineering Subjects Video Lectures and Tutorials of Mumbai University (MU) Courses. Visit us: https://ekeeda.com/streamdetails/University/Mumbai-University
Ekeeda Provides Online Engineering Subjects Video Lectures and Tutorials of Mumbai University (MU) Courses. Visit us: https://ekeeda.com/streamdetails/University/Mumbai-University
Infomatica, as it stands today, is a manifestation of our values, toil, and dedication towards imparting knowledge to the pupils of the society. Visit us: http://www.infomaticaacademy.com/
Plastic manufacturing "forming and shaping plastics"Ayush Mathur
how plastic products are manufactured?
what are the processes involved in manufacturing of these products?
what are the various machine tools used?
what are the various types of plastics and what is resin?
what are the diffrent steps in manufacturing?
Get all these answers in this presentation.
Ekeeda Provides Online Engineering Subjects Video Lectures and Tutorials of Mumbai University (MU) Courses. Visit us: https://ekeeda.com/streamdetails/University/Mumbai-University
Ekeeda Provides Online Engineering Subjects Video Lectures and Tutorials of Mumbai University (MU) Courses. Visit us: https://ekeeda.com/streamdetails/University/Mumbai-University
Units
and dimensions Properties of fluids mass density, specific weight,
specific volume, specific gravity, viscosity, compressibility, vapor pressure,
surface tension and capillarity
NUMERICAL SIMULATIONS OF HEAT AND MASS TRANSFER IN CONDENSING HEAT EXCHANGERS...ssuser7dcef0
Power plants release a large amount of water vapor into the
atmosphere through the stack. The flue gas can be a potential
source for obtaining much needed cooling water for a power
plant. If a power plant could recover and reuse a portion of this
moisture, it could reduce its total cooling water intake
requirement. One of the most practical way to recover water
from flue gas is to use a condensing heat exchanger. The power
plant could also recover latent heat due to condensation as well
as sensible heat due to lowering the flue gas exit temperature.
Additionally, harmful acids released from the stack can be
reduced in a condensing heat exchanger by acid condensation. reduced in a condensing heat exchanger by acid condensation.
Condensation of vapors in flue gas is a complicated
phenomenon since heat and mass transfer of water vapor and
various acids simultaneously occur in the presence of noncondensable
gases such as nitrogen and oxygen. Design of a
condenser depends on the knowledge and understanding of the
heat and mass transfer processes. A computer program for
numerical simulations of water (H2O) and sulfuric acid (H2SO4)
condensation in a flue gas condensing heat exchanger was
developed using MATLAB. Governing equations based on
mass and energy balances for the system were derived to
predict variables such as flue gas exit temperature, cooling
water outlet temperature, mole fraction and condensation rates
of water and sulfuric acid vapors. The equations were solved
using an iterative solution technique with calculations of heat
and mass transfer coefficients and physical properties.
CW RADAR, FMCW RADAR, FMCW ALTIMETER, AND THEIR PARAMETERSveerababupersonal22
It consists of cw radar and fmcw radar ,range measurement,if amplifier and fmcw altimeterThe CW radar operates using continuous wave transmission, while the FMCW radar employs frequency-modulated continuous wave technology. Range measurement is a crucial aspect of radar systems, providing information about the distance to a target. The IF amplifier plays a key role in signal processing, amplifying intermediate frequency signals for further analysis. The FMCW altimeter utilizes frequency-modulated continuous wave technology to accurately measure altitude above a reference point.
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
1. MANUFACTURING OF PLASTIC COMPONENTS
Types of plastics - Characteristics of the forming and shaping processes –
Moulding of Thermoplastics – Working principles and typical applications
of - Injection moulding – Plunger and screw machines – Compression
moulding, Transfer moulding – Typical industrial applications –
Introduction to Blow moulding – Rotational moulding – Film blowing –
Extrusion - Thermoforming, - Bonding of Thermoplastics.
3. Polymers
Poly means ‘Many’ & ‘Mers’ means
‘Parts’
Polymer built of several repeating
units(Monomer)
Monomer – small molecules
Polymer is made up of thousands of
monomers jointed together to form
large molecule.
Plastics – Organic polymer
4. Polymerization process
A Polymer is made up of linking thousands
of monomer and thus obtaining large
molecule is called Polymerization process
Additives – Plasticizers (liquid form) –
Water, Organic solvents & resins
Catalyst – Promote faster & complete
Polymerization
Dyes – Impart desired colour
Initiators – Initiate the reaction (H2O2)
Hydrogen peroxide
5. Plastics
Can be moulded into required shape
with the help of pressure or heat or
both heat and pressure
Resin – liquid form of plastics, also raw
material for making plastics
Types of resin: acrylic resin,
Polyethylene resin & amino resin –
Produced by polymerization process
Catalysts, Binders & Lubricants added
with resin to form plastics
6. Modifiers – To improve the mechanical
properties of plastics
Lubricants – To reduce friction during processing ,
Avoid sticking to mould walls(Oils, Soaps and
waxes)
Solvents – Dissolve fillers or Plasticizers & Allow
the processing in fluid state(Alcohol)
Fillers – Mica, Cloth fiber
Elastomers – To enhance the elastic properties
7. Properties of Plastics
Elongation
Heat resistance
High rigidity
Surface hardness
High viscosity
Density
Chemical resistance
8. Thermosetting Plastics
Thermosetting - Plastics which are hardened by
heat effecting non reversible chemical change .
Molecules are formed by condensation
polymerization process.
All the molecules have three dimensional
network and very strong binding force between
molecules
Bakelite, Polyester resin, Epoxy resin(Araldite),
Silicones, Urea formaldehyde(Amino resin) &
Alkyds
9. Thermo Plastics
Have separate long and large size molecule arranged
side by side
When thermoplastics are heated it becomes very soft
and rehardens on cooling
During heating the linear bonding links between
molecules are breakup and separated. Relinking takes
place on cooling and retains their hardness.
Cellulose nitrate – pen bodies, Table tennis balls, Frames
Ethyl cellulose – Jigs, Fixtures, hose nozzles
Cellulose acetate - Radio cabinets, steering wheels,
Insulating tapes
11. S.
No
Thermoplastics Thermosetting plastics
1 Softened by heating Cannot be softened by
heating
2 Structure is made of linear
chain molecule
Structure is made of cross-
linked molecule
3 Produced by addition
polymerization process
Produced by condensation
polymerization process
4 Can be reproduced by
heating and cooling
Cannot be reproduced
5 When the temp increases
the plasticity also
increases
Plasticity is stable at high
temperature
6 Softer and less strong Harder and strong
7 Scrap can be reused Scrap can not be reused
17. THERMOPLASTICS – INDUSTRIAL APPLICATION
5) SHEET MAKING
*Calendering process is used for sheet making.
*A calender is a series of hard pressure rollers used to form or
smooth a sheet of material such as paper or plastic film.
*thickness of the sheet is controlled by combination of squeezing
and altering the speed of rolls.
24. BONDING OF THERMOPLASTICS
Laminations:
• It is done by the applications of heat and pressure. It
consist of layers such as paper, cellulose, glass fiber etc.
• thermoplastics are bonded by the process of lamination.
• the pressure applied is 7MPa and temperature about 150
C
25. The methods of joining plastics
and composites:
Mechanical fastening
Uses of additional parts such as metallic screws,
bolts, washers, rivets.
Adhesive and solvent bonding
Adhesive is placed between parts to be bonded
where it serves as the material that joins the parts and
transmits the load through the joint.
Welding or fusion bonding.
27. Friction bonding or friction
welding
Friction welding of PVC tubes and pipes is well
developed. Prior to welding process, the ends of the
tubes are sized by heating the tube ends oil to 100 C for
3 to 4 minutes and then tube are clamped in gauge for
3 minutes followed by water cooling to room
temperature.
28. Ultrasonic welding
Process in which mechanical vibrations of high
frequency are used. The frequency range from 15 to 20
kHz.
Transducer which converts high frequency energy
supplied by ultrasonic oscillator into vibrations.
It is possible to weld acetyl, nylon nd high density
polyethylene, PVC