Engineering Materials and
Properties for Testing
Unlocking the Secrets of Materials in
Engineering
Presenter: Muhammad Sulaiman
Engineering Lecturer
Introduction
Learning Objectives
• Understand the fundamental properties of
engineering materials.
• Recognize the significance of material testing in
engineering.
• Relate theoretical knowledge to practical
applications.
Importance of Materials in
Engineering
• Materials are the building blocks of engineering.
• They impact the design, functionality, and
performance of engineering products.
• The right material choice is crucial for success in
engineering projects.
• 1,000 different materials make up an automobile
Classification of Engineering
Materials
• Metals, Polymers, Ceramics, Composites
• Each category has unique properties.
• Choosing the right material is essential for
specific applications.
Properties of Engineering
Materials
• Mechanical properties (strength,
hardness, ductility)
• Physical properties (density, conductivity,
thermal expansion)
• Manufacturing properties (welding,
machined, casting, formed)
• Chemical properties (oxidation, corrosion)
Selection Criteria
• Most designers select materials
considering:
–
–
–
–
Properties
Availability
Cost
Manufacturability
Strength
• Strength is defined as the ability of a
material to withstand force without
breaking or permanently changing shape.
– Different types of strength resist different
types of forces.
Strength
Toughness
• Toughness is the ability to withstand
shock loading without fracture. Materials
that have high toughness generally have
high hardness and high ductility.
Hardness
• Hardness is defined as the ability of a
material to resist abrasive wear and
indentation or deformation. Hardness is
an important property required for cutting
tools.
Material Testing Methods
• Non-destructive testing (NDT)
• Destructive testing
• Ensures material reliability and safety in
various applications
Material Testing Methods
Destructive Testing Methods
Interactive Group Discussion
• What materials have you encountered in
your studies or work?
• Share experiences and insights.
• Discuss the importance of materials in
specific engineering projects.
Formative Assessment
• Quick quiz to gauge understanding.
• Immediate feedback to address any
misconceptions.
QUIZ
Q. Which property of a material describes
its ability to absorb energy without
undergoing permanent deformation?
A) Hardness
B) Toughness
C) Brittleness
D) Stiffness
QUIZ
Q. Which property of a material describes
its ability to absorb energy without
undergoing permanent deformation?
A) Hardness
B) Toughness ----- Answer
C) Brittleness
D) Stiffness
QUIZ
Q. Which of the following properties is
crucial for a material to resist the
penetration of sharp objects or abrasion?
A) Toughness
B) Hardness
C) Elasticity
D) Conductivity
QUIZ
Q. Which of the following properties is
crucial for a material to resist the
penetration of sharp objects or abrasion?
A) Toughness
B) Hardness --- Answer
C) Elasticity
D) Conductivity
Additional Resources
Tensile test
https://www.youtube.com/watch?v=D8U4G5kcpcM
Ductility/Brittleness https://www.youtube.com/watch?v=4poXNwRcAY https://www.youtube.com/watch?v=gGXHdgsFA9s
Material properties
https://www.youtube.com/watch?v=BHZALtqAjeM Materials
Database http://www.matweb.com/search/search.aspx
http://www.makeitfrom.com/property-search
THANK YOU