讲话稿格式Formal Laboratory Report
Group:
Mechanical Properties of Materials
Date of experiment:
Abstract
For this experiment, the mechanical strength properties of metals, ceramics and polymers are tested by obtaining their tensile strength (the maximum strength they have before they fracture), modulus (stiffness during elastic deformation) and the elongation to failure. Their respon characteristics are noted.
Bad on the respon outputs obtained from the Material Stress Vs Behaviour Curve and the test report generated by the software, values of the tensile strength, modulus and elongation are obtained.
The materials’ respons, strength and ductility are investigated using their structures and microstructures and ud to make comparisons with theory.
Table of Content
1) Objectives & Introduction……………………………………………………….. 4
2) Theory…………………………………………………………………………… 5
领海宽度3) Equipment……………………………………………………………………….. 7浙大软件学院
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4) Procedure………………………………………………………………………... 8
5) Results…………………………………………………………………………... 17
6) Solutions to logsheet questions…………………………………………………. 19
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7) Discussion………………………………………………………………………. 21
8) Conclusion………………………………………………………………………. 22
顶针修辞9) References……………………………………………………………………….. 23
Objectives and Introduction
Objectives
(a) To understand the different mechanical properties of materials.
(b) To learn how different materials are tested in different ways to obtain their mechanical strength properties.
This experiment introduces the study of how different types of materials such as metals, polymers and ceramics can have very different mechanical properties: polymer, ceramics and metallic materials. This is very important as it helps the engineer to correctly choo the right type of material for the right application.
Metals, ceramics and polymers are basically the three broad categories of materials ud in engineering application. It is generally known that metals are usually strong and ductile,
ceramics are rigid and brittle and polymers have higher elongation and lower strength.传统风格
This experiment aims to expo the number of factors can affect the mechanical strengths of materials. The factors include:
• the category of the material (i.e metal, ceramic or polymer)
• the type of material in that category (eg. crosslinked or thermplastics)
• the difference in microstructure of the same material (crystalline or amorphous)
Theory
Terminology
(i) Tensile Stress
食管反流治疗 Force acting on unit area of the material
Tensile Stress σ =
(ii) Tensile Strain
Deformation or distortion experienced by a unit of the material
