lecture 1- introduction to engineering materials

8/11/2019 Lecture 1- Introduction to Engineering Materials

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MATERIALS ENGINEERING 10

ENGINEERING

MATERIALS

Lecture 01

Introduction to

Engineering Materials


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OBJECTIVES

Define engineering materials and materials engineeri Differentiate materials science from materials enginee

Relate material structure to properties

Define the basic materials in materials engineering


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So why are you here?


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ENGINEERING MATERIA


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ENGINEERING MATERIA

Merriam-Webster:

The work of designingstructures, newproducts or systems

by using scientific methods.

Wikipedia:

The application ofscientific, economic, social and practical

knowledge in order to design, build, and maintainstructures, machines, devices, systems, materials and processes.



ENGINEERING MATERIAEverytime you see this word, replace it with

Merriam

A substance which composes

Since we live on the planet Earth, virtually AL

comes from the crust and the



ENGINEERING MATERIA

Stuffused for the purposes of

achieving the goals of engineering

practice.

The characteristics of these materia

are usually engineered themselves!



ENGINEERING MATERIA


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ENGINEERINMATERIALS

The design of new stuff for cerapplications by using scientific,

economic, social, and practical

knowledge.


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MATERIALS SCIENCE

Deals with the search for

knowledge about internalstructure, properties, andprocessing of materials.

Investigate relationshipsbetween structure and property

MATERIALS ENGIN

Deals with the applica

knowledge gained thrmaterials science for nproducts.

On the basis of these sproperty relationships,the structure of the m

produce desired prop


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Resultant

Knowledge

of Structure,

Properties &

Application

Applied

Knowledge

of Materials

Materials Science

Materials Science and

Engineering Materials Engineer

Basic

Knowledge

of

Materials

Resultant

Knowledge

of Structure,

Properties &

Application

Applied

Knowledge

of Materials


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STRUCTURE

TheARRANGEMENT of the internal components of the m


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PROPERTY

Material trait expressed in terms of measured response tospecific imposed stimulus.

Stimulus Properties

Force Mechanical

Electric field Electrical

Heat energy Thermal

Magnetic field Magnetic

Light Optical

Chemical Deteriorative


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STRUCTURE-PROPERTYRELATIONSHIP


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CENTRAL MANTRA OF MATERSCIENCE AND ENGINEERIN

STRUCTURE = f(PROPERTY


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THE MATERIALS ENGINEERINTETRAHEDRON


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THE BASIC MATERIALCLASSIFICATIONS

COMPOELECTRONIC

MATERIALS


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METALS


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METALS


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METALSGood thermal and

electrical conductors

Strong yet deformable

Not transparent

Lustrous

Do not eas

Malle

Duct

High-de


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METALS

METALLIC BONDING: a sea of electrons


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METALS

Can occur asalloys,

which are mixtures of two or more eleand mostly composed of metallic elements


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POLYMERS


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POLYMERS


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POLYMERSPoor thermal and


Highly deformable

Corrosion-resistant

Amorphous

Large omolec

Soft, low temper

Highly ex

Low-de


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CERAMICS


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CERAMICS


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CERAMICSPoor thermal and


Hard and brittle

May be opaque ortransparent

Rough surface

Regularlyatoms (exc

Low resfrac

Not fo

High me


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CERAMICS


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COMPOSITES


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COMPOSITES


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COMPOSITES

MATRIX

REINFORCEMENT

INTERFACE


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ELECTRONIC MATERIALS


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ELECTRONIC MATERIALS


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THANK YOU FOR LISTENING

lecture 1- introduction to engineering materials

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