This presentation gives a brief idea about the importance of smart materials in the present research world and their applications in all the fields of technology.

1. SMART MATERIALS By
P.Shyamsundar Reddy
14001A0812
Department of Chemical Engg.
JNTUACEA
1

2. CONTENTS
 INTRODUCTION
 SMART MATERIALS
 COMPARISON BETWEEN MATERIALS
 CLASSIFICATION OF SMART MATERIALS
 APLLICATIONS
 CONCLUSION
 REFERENCES

3. INTRODUCTION
TYPES OF MATERIALS
Materials are grouped into five main categories, based on what they
are made from:
1.Wood
2.Metals
3.Polymers
4.Ceramics
5.Composites
Smartness in a scale of Intelligence
• Stupid – Dumb – Foolish – Trivial – Sensible –
Smart/Clever – Intelligent – Wise
• Present smart materials are in the range from highly sensible to poorly
intelligent level

4. SMART MATERIALS
• Smart materials are designed materials that have one or more properties that can
be significantly changed in a controlled fashion by external stimuli and the
environment.
• The external stimuli to which the smart materials are sensitive are
 Stress
 Temperature
 Moisture
 pH
 Electric Fields
 Magnetic Fields……
• The associate changeable physical properties are shape, stiffness, viscosity etc..,
• The change in the material is reversible.

5. Material Conductivity Strength Hardness Toughness Weight Corrosion
Resistance
Cost
Pine Very poor Medium/
low
Low Low Low/
medium
Poor Low
MDF Very poor Low Low Low Low/
medium
Poor Low
Low-carbon
steel
Very good Very good Good Very good High Poor Low
Stainless steel Very good Excellent Very
good
Very good High Good High
HIPS Very poor Medium Low Good Low Very good Low
Acrylic
(PMMA)
Very poor Medium Low/
medium
Good Low Good Medium
SMA Very good Very good Good Very good Medium Good High
Source : http://www.bbc.co.uk/schools/gcsebitesize/design/electronics/materialsrev5.shtml
COMPARISON BETWEEN MATERIALS

6. CLASSIFIATION OF SMART MATERIALS
Type of Smart Material Input Output
Piezoelectric Deformation Potential Difference
Electro strictive Potential Difference Deformation
Magneto strictive Magnetic Field Deformation
Thermoelectric Temperature Potential Difference
Photochromic Radiation Color Change
Thermochromic Temperature Color Change
Shape Alloy Materials Temperature Deformation

8. pH-SENSITIVE POLYMERS
 pH-Sensitive Polymers are materials that changes in volume when
the pH of the surrounding medium changes.
 There are two kinds of pH sensitive materials :
 Acidic group (-COOH, -SO3H) Ex: Polyacids(Anionic
Polymers)
 Basic groups (-NH2) Ex: Polybases(Cationic
Polymers)
Applications
 Controlled Drug Delivery Systems
 Separation Processes
 Surface Modification etc..,

9. Source : Ed (Edgar181) - Own work, Public Domain, https://commons.wikimedia.org/w/index.php?curid=34584789

10. CHROMOGENIC MATERIALS
This group of materials refers to those which change their color in response to a
change in their environment, leading to the suffix chromic. A variety of chromic
materials exist and they are described in terms of the stimuli which initiate a
change.
THERMOCHROMIC MATERIALS
Thermochromic materials change reversibly color with changes in
temperature.
Applications
• Inks
• Dyes
• Papers
• Plastics

11. ELECTROCHROMIC MATERIALS
 These materials changes their optical behavior with the application
of electronic voltage
Applications
 Smart Glass
 Rear View Mirrors
 Light-transmission devices for
optical information and storage

12. PHOTOCHROMIC MATERIALS
 Photochromic materials change reversibly color with changes in
light intensity.
 Changes from one color to another color are possible mixing
photochromic colors with base colors.
 They are used in paints, inks, and mixed to mould or casting
materials for different applications.

13. SMART GELS
These are the gels that can shrink or swell by several order of magnitude. Some
of these can also be programmed to absorb release fluids in response to a
chemical or physical stimulus.
Applications
• Food
• Drug Delivary
• Artificial Muscle Fabrication

14. PIEZOELECTRIC MATERIALS
• These materials are able to convert mechanical energy into electrical energy
and vice versa.
• Some popularly known piezoelectric materials are :Quartz, Aluminum Nitride,
Barium Titanite, Lead ….
• Piezoelectric materials are being used for contact sensors for alarm systems and
in microphones and headphones.

15. SMART MATERIALS RESEARCH UNDERSTANDING DIFFERENT DOMAINS
 Materials and Systems
 Design Optimization
 Manufacturing and Quality Control
 Mathematics
 Electro-mechanics
 Mechatronics
 MEMS
 Mechanics and Structures
 Computer Hardware and Software
 Dynamics and Vibrations

16. APPLICATIONS
 AUTOMOBILE INDUSTRY
 AIRCRAFT INDUSTRY
 RAILWAY INDUSTRY
 AGRICULTURE INDUSTRY
 CONSTRUCTION INDUSTRY
 SPORTS
 MEDICAL INDUSTRY

17. CONCLUSION
 Today, the most promising technologies for life time efficiency and improve
reliability include the use of small material and structures.
 Understanding and controlling the composition and microstructure of any
new material are the ultimate objectives of research in these fields, and is
crucial to the production of good smart materials.
 New and advanced material will definitely enhanced our quality of our life.

18. REFERENCES
 INDUSTRIAL APPLICATIONS OF SMART MATERIALS – AN OVERVIEW , Shreyas B R,
Arunkumar N, Dept. of Aeronautical Engineering ,Acharya Institute of
Technology, Bangalore – 560107 ,Karnataka, India.
 Smart Materials, Prof. Parihar A.A.1 , Ms. Kajal D. khandagale2 , Ms. Pallavi P.
Jivrag3 (Professor Mechanical Dept. MGM’s polytechnic Aurangabad) 1
(Student Mechanical Dept. MGM’s polytechnic Aurangabad)2,3.
 Smart Materials and Structures, V. L. Sateesh CSIR- National Aerospace
Laboratories ,Pravartana 2016 ,IIT Kanpur, CSIR-NAL CSIR.
 Smart Materials- Institute of Materials, Minerals and Mining
 Overview of Smart Materials , Bishakh Bhattacharya & Nachiketa Tiwari,
Department of Mechanical Engineering, Indian Institute of Technology, Kanpur