tensile testing
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Abstract
The tensile test is widely used to provide basic design information on the strength of materials and as an acceptance test for the specification of materials. The teaching and learning of tensile testing was based on laboratory experiments used in the Mechanical Engineering Laboratory (CM180) at the
City University. The experiment looked at how the microstructure of a material can affect its properties. It also introduced tensile testing and stress-strain curves. It is done by using of a tensile testing machine. Three basic types of materials were used in the experiment. They were a) mild steel (low carbon), b) copper, and c) duralumin. They had different properties; therefore they had different tensile strengths and elongations.
Aims
On completion of this experiment one should be able:
a) To understand the general shape of the tensile stress-strain curve.
b) To understand how the microstructure of a material can affect its properties, in particular the yield-strength and stiffness.
c) To understand some ways that the microstructure can be controlled.
Introduction
Tensile test is the method for determining behaviour of materials under axial stretch loading. It is also known as tension test. It is probably the most fundamental type of mechanical test that can be performed on material. Tensile tests are simple, relatively inexpensive, and fully standardized. By pulling on something, it is possible to determine (very quickly) how the material will react to forces being applied in tension. As the material is being pulled, it is easy to find out its strength along with how much it elongates.
A lot can be learnt about a substance from tensile testing. As continuing to pull on the material until it breaks, a good and complete tensile profile can be obtained. A curve will result showing how it reacted to the forces being applied. The point of failure is of much
Abstract
The tensile test is widely used to provide basic design information on the strength of materials and as an acceptance test for the specification of materials. The teaching and learning of tensile testing was based on laboratory experiments used in the Mechanical Engineering Laboratory (CM180) at the
City University. The experiment looked at how the microstructure of a material can affect its properties. It also introduced tensile testing and stress-strain curves. It is done by using of a tensile testing machine. Three basic types of materials were used in the experiment. They were a) mild steel (low carbon), b) copper, and c) duralumin. They had different properties; therefore they had different tensile strengths and elongations.
Aims
On completion of this experiment one should be able:
a) To understand the general shape of the tensile stress-strain curve.
b) To understand how the microstructure of a material can affect its properties, in particular the yield-strength and stiffness.
c) To understand some ways that the microstructure can be controlled.
Introduction
Tensile test is the method for determining behaviour of materials under axial stretch loading. It is also known as tension test. It is probably the most fundamental type of mechanical test that can be performed on material. Tensile tests are simple, relatively inexpensive, and fully standardized. By pulling on something, it is possible to determine (very quickly) how the material will react to forces being applied in tension. As the material is being pulled, it is easy to find out its strength along with how much it elongates.
A lot can be learnt about a substance from tensile testing. As continuing to pull on the material until it breaks, a good and complete tensile profile can be obtained. A curve will result showing how it reacted to the forces being applied. The point of failure is of much