Introduction to Engineering-Materials Materials and Engineering Shanghai Jiao Tong University 1 Introduction to Engineering H.Shao
Introduction to Engineering Introduction to Engineering —— Materials Materials Shanghai Jiao Tong University Shanghai Jiao Tong University Introduction to Engineering Introduction to Engineering H. Shao 1 Materials and Engineering
Introduction to Engineering-Materials Contents 1.Introduction 2.Material Properties 3.Selection of Materials Objectives Understand how material properties are used to qualify materials for engineering design Understand how traditional and composite materials are used in engineering design Shanghai Jiao Tong University 2 Introduction to Engineering H.Shao
Introduction to Engineering Introduction to Engineering —— Materials Materials Shanghai Jiao Tong University Shanghai Jiao Tong University Introduction to Engineering Introduction to Engineering H. Shao 2 Contents 1. Introduction 2. Material Properties 3. Selection of Materials Objectives Understand how material properties are used to qualify materials for engineering design Understand how traditional and composite materials are used in engineering design
Introduction to Engineering-Materials 1.Introduction Materials The foundation and fabric of manufactured products Mechanical design is dependent on and limited by materials Properties of materials are usually the deciding factor in choosing materials for a particular application ■Material science: The study of the structure and properties of any material - Using this body of knowledge to create new types of materials To tailor the properties of a material for specific uses New materials and processes enable other new technologies to be commercially successful Shanghai Jiao Tong University 3 Introduction to Engineering H.Shao
Introduction to Engineering Introduction to Engineering —— Materials Materials Shanghai Jiao Tong University Shanghai Jiao Tong University Introduction to Engineering Introduction to Engineering H. Shao 3 1. Introduction Materials The foundation and fabric of manufactured products Mechanical design is dependent on and limited by materials Properties of materials are usually the deciding factor in choosing materials for a particular application Material science : – The study of the structure and properties of any material – Using this body of knowledge to create new types of materials – To tailor the properties of a material for specific uses New materials and processes enable other new technologies to be commercially successful
Introduction to Engineering-Materials 2.Material Properties The principal properties of materials can be broadly divided into Mechanical Properties concerned mainly with strength Physical Properties such as melting temperature,density, etc Shanghai Jiao Tong University 4 Introduction to Engineering H.Shao
Introduction to Engineering Introduction to Engineering —— Materials Materials Shanghai Jiao Tong University Shanghai Jiao Tong University Introduction to Engineering Introduction to Engineering H. Shao 4 2. Material Properties Mechanical Properties ( concerned mainly with strength ) Physical Properties ( such as melting temperature,density, etc ) The principal properties of materials can be broadly divided into :
Introduction to Engineering-Materials 2.1 Stress-Strain Curve ■Test specimen “dog bone?”specimen Materials Testing Machine ■Tensile test process A specimen is clamped by two jaws Jaws are gradually pulled apart during the test,placing the specimen in tension Shanghai Jiao Tong University 5 Introduction to Engineering H.Shao
Introduction to Engineering Introduction to Engineering —— Materials Materials Shanghai Jiao Tong University Shanghai Jiao Tong University Introduction to Engineering Introduction to Engineering H. Shao 5 2.1 Stress-Strain Curve “dog bone” specimen Test specimen Materials Testing Machine Tensile test process A specimen is clamped by two jaws Jaws are gradually pulled apart during the test, placing the specimen in tension