Materials science and engineering involves investigating the relationships between the structures and properties of materials. Materials scientists develop new materials while materials engineers design materials to have specific properties. Virtually every aspect of modern life is influenced by materials in some way. The document discusses the four main material classes - metals, ceramics, polymers, and composites - and provides examples of common materials in each class as well as their typical properties. It also covers advanced materials areas like semiconductors, biomaterials, smart materials, and nanomaterials that are being developed to address modern needs.
This presentation imparts intensive and extensive knowledge of the subject so that students can understand Materials science & Engineering. The discovery and use of new materials always opens the door for new technologies in the field of Engineering making human life better.
This presentation imparts intensive and extensive knowledge of the subject so that students can understand Materials science & Engineering. The discovery and use of new materials always opens the door for new technologies in the field of Engineering making human life better.
I hope You all like it. I hope It is very beneficial for you all. I really thought that you all get enough knowledge from this presentation. This presentation is about materials and their classifications. After you read this presentation you knowledge is not as before.
this ppt describes materials ,metals, ceremics and its types, polymer, composites etc.
u can study more topics of material science on this you tube channel
https://www.youtube.com/playlist?list=PLAd8Bzun6OmL4Sg2sKbDJ1b5PZZ0Vb5Hu
: Part of inanimate matter, which is useful to engineer in the practice of his profession (used to produce products according to the needs and demand of society)
Material Science: Primarily concerned with the search for basic knowledge about internal structure, properties and processing of materials and their complex interactions/relationships
Materials Engineering and Metallurgy Lecture NotesFellowBuddy.com
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undamentals of Crystal Structure: BCC, FCC and HCP Structures, coordination number and atomic packing factors, crystal imperfections -point line and surface imperfections. Atomic Diffusion: Phenomenon, Fick’s laws of diffusion, factors affecting diffusion.
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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.
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I hope You all like it. I hope It is very beneficial for you all. I really thought that you all get enough knowledge from this presentation. This presentation is about materials and their classifications. After you read this presentation you knowledge is not as before.
this ppt describes materials ,metals, ceremics and its types, polymer, composites etc.
u can study more topics of material science on this you tube channel
https://www.youtube.com/playlist?list=PLAd8Bzun6OmL4Sg2sKbDJ1b5PZZ0Vb5Hu
: Part of inanimate matter, which is useful to engineer in the practice of his profession (used to produce products according to the needs and demand of society)
Material Science: Primarily concerned with the search for basic knowledge about internal structure, properties and processing of materials and their complex interactions/relationships
Materials Engineering and Metallurgy Lecture NotesFellowBuddy.com
FellowBuddy.com is an innovative platform that brings students together to share notes, exam papers, study guides, project reports and presentation for upcoming exams.
We connect Students who have an understanding of course material with Students who need help.
Benefits:-
# Students can catch up on notes they missed because of an absence.
# Underachievers can find peer developed notes that break down lecture and study material in a way that they can understand
# Students can earn better grades, save time and study effectively
Our Vision & Mission – Simplifying Students Life
Our Belief – “The great breakthrough in your life comes when you realize it, that you can learn anything you need to learn; to accomplish any goal that you have set for yourself. This means there are no limits on what you can be, have or do.”
Like Us - https://www.facebook.com/FellowBuddycom
undamentals of Crystal Structure: BCC, FCC and HCP Structures, coordination number and atomic packing factors, crystal imperfections -point line and surface imperfections. Atomic Diffusion: Phenomenon, Fick’s laws of diffusion, factors affecting diffusion.
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#vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore#blackmagicformarriage #aamilbaba #kalajadu #kalailam #taweez #wazifaexpert #jadumantar #vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore #blackmagicforlove #blackmagicformarriage #aamilbaba #kalajadu #kalailam #taweez #wazifaexpert #jadumantar #vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore #Amilbabainuk #amilbabainspain #amilbabaindubai #Amilbabainnorway #amilbabainkrachi #amilbabainlahore #amilbabaingujranwalan #amilbabainislamabad
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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
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2. What is materials science
and engineering?
Why we should know about it?
3. Materials Science
Involves investigating the relationships
that exist between the structures and
properties of the materials.
Materials scientist develops or synthesizes
new materials.
4. Materials Engineering
Designing or engineering the structure of
a material to produce a predetermined set
of properties.
Materials engineer is called upon to create
new products or systems using existing
materials, and/or to develop techniques
for processing materials.
5. Importance
Transportation, housing, clothing,
communication, recreation, and food
production— virtually every segment of
our everyday lives is influenced to one
degree or another by materials.
6. Importance
The more familiar an engineer or scientist
is with the various characteristics
and structure–property relationships, as
well as processing techniques of
materials, the more proficient and
confident he or she will be in making
judicious materials choices based on these
criteria.
7. History
Stone Age (2.5 million BC)
- People began to make tools from stone.
- Natural materials: stone, wood, clay, skins.
Bronze Age (3500 BC)
- Bronze is an alloy (Copper and Tin).
Iron Age (1000 BC)
- Use of iron and steel.
11. Metals
Materials in this group are composed of
one or more metallic elements (e.g., iron,
aluminum, copper, titanium, gold, and
nickel), and often also nonmetallic
elements (e.g., carbon, nitrogen, and
oxygen) in relatively small amounts.
12. Metals
Relatively stiff and strong
Ductile (i.e., capable of large amounts of
deformation without fracture), and are
resistant to fracture
Extremely good conductor of electricity
and heat
Lustrous
Some have magnetic properties
14. Ceramics
Ceramics are compounds between
metallic and nonmetallic elements; they
are most frequently oxides, nitrides, and
carbides.
Common: aluminum oxide (or alumina,
Al2O3), silicon dioxide (or silica, SiO2),
silicon, carbide (SiC), silicon nitride
(Si3N4)
15. Ceramics
Relatively strong and stiff
Typically very hard
Historically, ceramics have exhibited
extreme brittleness (lack of ductility) and
are highly susceptible to fracture
However, newer ceramics are being
engineered to have improved resistance
to fracture
16. Ceramics
Typically insulative to the passage
of heat and electricity (i.e., have low
electrical conductivities
• More resistant to high temperatures and
harsh environments than metals and
polymers
18. Polymers
Polymers include the familiar plastic and
rubber materials.
Many of them are organic compounds that
are chemically based on carbon,
hydrogen, and other nonmetallic elements
(i.e., O, N, and Si).
19. Polymers
Typically have low densities
Not as stiff nor as strong as these other
material types
Many of the polymers are extremely
ductile and pliable (i.e., plastic), which
means they are easily formed into
complex shapes.
21. Polymers
Relatively inert chemically and unreactive
in a large number of environments
Has tendency to soften and/or decompose
at modest temperatures, which, in some
instances, limits their use
Have low electrical conductivities and
nonmagnetic
22. Composites
A composite is composed of two (or more)
individual materials, which come from
the categories previously discussed —
metals, ceramics, and polymers.
24. Composites
The design goal of a composite is to
achieve a combination of properties that
is not displayed by any single material,
and also to incorporate the best
characteristics of each of the component
materials.
26. Semiconductors
Have electrical properties that are
intermediate between the electrical
conductors (i.e., metals and metal alloys)
and insulators (i.e., ceramics and
polymers)
27. Biomaterials
Employed in components implanted into
the human body to replace diseased or
damaged body parts.
28. Smart Materials
Smart (or intelligent) materials are a
group of new and state-of-the-art
materials now being developed that will
have a significant influence on many of
our technologies.
29. Nanomaterials
They are not distinguished on the basis of
their chemistry, but rather, size;the nano-
prefix denotes that the dimensions of
these structural entities are on the
order of a nanometer (10–9 m)—as a
rule, less than 100 nanometers
(equivalent to approximately 500 atom
diameters)
31. Modern Materials’ Needs
There is a recognized need to find new,
economical sources of energy and to use
present resources more efficiently.
New materials still need to be developed
for more efficient fuel cells and also for
better catalysts to be used in the
production of hydrogen.
32. Modern Materials’ Needs
These nonrenewable resources are
gradually becoming depleted, which
necessitates (1) the discovery of additional
reserves, (2) the development of new
materials having comparable properties with
less adverse environmental impact, and/or
(3) increased recycling efforts and the
development of new recycling technologies.