A Seminar Report On Fracture Mechanism In Design And Failure Analysis

Slides:

Advertisements

Similar presentations

CHE 333 Class 18 Fracture of Materials.

Advertisements

MatSE 259 Exam 1 Review Session 1.Exam structure – 25 questions, 1 mark each 2.Do NOT forget to write your student I.D. on the answer sheet 3.Exams are.

LECTURER5 Fracture Brittle Fracture Ductile Fracture Fatigue Fracture

ME 240: Introduction to Engineering Materials Chapter 8. Failure 8.1 CHAPTER 8.

FRACTURE Fracture is the separation, or fragmentation, of a solid body into two or more parts under the action of stress. Process of fracture- with two.

Chapter 9 Failure of Materials

Dr. HABEEB HATTAB HABEEB Office: BN-Block, Level-3, Room Ext. No.: 7292 Lecturer: Dr. HABEEB ALANI.

Material testing Lesson 2.

1 ) ) Kingdom of Saudi Arabia, Ministry of Higher Education, Jazan University, Preparatory Year Deanship. Practical Production Tech. & Workshop.

LECTURER 2 Engineering and True Stress-Strain Diagrams

NOTCH EFFECTS INTRODUCTION OF A NOTCH AFFECTS THE FRACTURE PROCESS Eg: INCREASES THE DUCTILE-BRITTLE TRANSITION TEMPERATURE OF STEEL NOTCH CREATES A LOCAL.

Engineering materials lecture #14

Machine design 2 selection of materials, stressing 1.

Tensile Test The most common static test is the uniaxial tensile test, which provides information about a variety of properties. As a load is applied to.

ENGR 225 Section

LECTURER 3 Fundamental Mechanical Properties (i)Tensile strength

Lecture # 7 Mechanical Properties(Cont) Intended learning Outcomes: After the end of this lecture the student should be able to: 1- Evaluate and measure.

LECTURER6 Factors Affecting Mechanical Properties

Mechanics of Materials Goal:Load Deformation Factors that affect deformation of a structure P PPP Stress: intensity of internal force.

ASPECTS OF MATERIALS FAILURE

Lab #1 Report due TODAY Individual Data Processing and Individual Write Up Lab #1 Report is due TODAY by midnight Answer Multiple Choice Questions ONLINE.

August 27, Dr. Alagiriswamy A A, (M.Sc, PhD, PDF) Asst. Professor (Sr. Grade), Dept. of Physics, SRM-University, Kattankulathur campus, Chennai.

11O105 BASICS OF CIVIL AND MECHANICAL ENGINEERING Prepared by Mr. C. Ayyasamy Assistant Professor Department of Mechanical Engineering Bannari Amman Institute.

Materials - Metals Ken Youssefi PDM I, SJSU.

Lecture # 6 Failure Intended learning Outcomes: 1.Describe the mechanism of crack propagation for both ductile and brittle modes of fracture. 2. Explain.

INTRODUCTION The ultimate goal of a manufacturing engineer is to produce steel/metal components with required geometrical shape and structurally optimized.

Early structural concepts  Some of the structures in earlier have endured for ages.  Materials used were brittle type like bricks, stones, mortar: poor.

Objectives Students will be able to label a stress-strain diagram correctly indicating. Ultimate stress, yield stress and proportional limit. Students.

Class #1.2 Civil Engineering Materials – CIVE 2110

Unit V Lecturer11 LECTURE-I  Introduction  Some important definitions  Stress-strain relation for different engineering materials.

Classification of Metals

Mechanical Properties of Materials

1 ME383 Modern Manufacturing Practices Lecture Note #3 Stress-Strain & Yield Criteria Dr. Y.B. Guo Mechanical Engineering The University of Alabama.

1 Class #2.1 Civil Engineering Materials – CIVE 2110 Strength of Materials Mechanical Properties of Ductile Materials Fall 2010 Dr. Gupta Dr. Pickett.

Week 4 Fracture, Toughness, Fatigue, and Creep

Introduction to Materials Science, Chapter 7, Dislocations and strengthening mechanisms University of Virginia, Dept. of Materials Science and Engineering.

Fracture, Toughness, Fatigue, and Creep

4 Mechanical Properties of Biomaterials CHAPTER 4.1 Introduction

Mechanics of Materials II UET, Taxila Lecture No. (4&5)

Chapter 2 Properties of Metals.

Mechanical Properties of Materials

Engineering materials. Materials and civilization Materials have always been an integral part of human culture and civilizations.

EGM 5653 Advanced Mechanics of Materials

Week 4 Fracture, Toughness, Fatigue, and Creep

Engineering properties of rock Prepared by :- Kumari Pooja 3 rd sem civil department 13oo

STRUCTURES Young’s Modulus. Tests There are 4 tests that you can do to a material There are 4 tests that you can do to a material 1 tensile This is where.

Physical properties Enrollment numbers Government engineering collage,Palanpur sub:- Applied.

Materials Science Metals and alloys.

PROPERTIES OF MATERIALS ENF 150 Chapter 10: Properties of Materials.

SHUBHAM VERMA. Fracture Mechanism In Design And Failure Analysis PREPARED BY SHUBHAM VERMA ME-2 nd Roll No.:BT/ME/1601/020.

DEPARTMENT OF MECHANICAL AND MANUFACTURING ENGINEERING

Lab. 1: Tension Test of Metals

selection of materials, stresses

Chapter 3 – Mechanical Properties of Material

Properties of Materials

Mechanical Properties of Metals

MECHANICAL PROPERTIES OF MATERIALS

Machine Design What is the importance of Machine Design for engineers? What is Machine Design? Creation of new and better machines AND Improving existing.

TABLE 2.1 Relative Mechanical Properties of Various Materials at Room Temperature (in Decreasing Order). Metals Are in Their Alloy Form.

1/18/2019 6:28 AM C h a p t e r 8 Failure Dr. Mohammad Abuhaiba, PE.

Mechanical Properties: 2

LECTURE-I Introduction Some important definitions

Strength of Concrete Strength of concrete is commonly considered its most valuable property, although in many practical cases, other characteristics, such.

Mechanical Properties of Metals

Behavior of Materials in Service

Describing deformation

Mechanical Failure(파괴)

CHE 333 Class 18 Fracture of Materials.

Mechanical Property 기계적 성질

Presentation transcript:

A Seminar Report On Fracture Mechanism In Design And Failure Analysis PREPARED BY ABHISHEK KUMAR SHARMA ME-3rd Roll No.:0816440002

Introduction Fracture Separation of solid into two or more pieces under applied load or stress Applied load or stress may be tensile or compressive in nature Fracture due to Crack initiation Crack propagation Fracture Fracture Fracture Mechanism In Design And Failure Analysis

Principles of Fracture Mechanics Quantitative study of failure is called fracture mechanics Fracture mechanics is the relationship between Material properties Stress level Presence of cracks/defects in material Types of crack-propagating mechanisms The aim is: “ design to prevent structural failure” Intention is to allow better design we design, only works well if ……………fracture and inter-relationships and limitations. Fracture Mechanism In Design And Failure Analysis

Classification Fracture Brittle Fracture Ductile Fracture Fracture in material can be broadly classified in two main category; Fracture Ductile Fracture Brittle Fracture Fracture Mechanism In Design And Failure Analysis

Ductile Fracture Occurs after prolonged plastic deformation. Crack initiates from formation of voids and propagates slowly. Ductile  y < f  yields before fracture Characteristic stress-strain curve for ductile material Ex: Aluminum and it’s alloy Ex: Aluminum and it’s alloy Fracture Mechanism In Design And Failure Analysis

Mechanism of Ductile Fracture Original specimen Necking Crack Nucleation Crack Growth Shearing at surface Fracture Fracture Mechanism In Design And Failure Analysis

Shape of work piece in Ductile Fracture In ductile fracture Cup and Cone shape occurs Cup Cone

Brittle Fracture Failure of material due to rapid rate of crack propagation Negligible plastic deformation occurs Brittle  y > f  fractures before yielding Characteristic stress-strain curve for brittle material Ex: Grey Cast Iron Fracture Mechanism In Design And Failure Analysis

F F F F Mechanism of Ductile Fracture Force applied in initial condition F F Sudden Fracture without plastic deformation Sudden Fracture without plastic deformation F F

Shape of work piece in Brittle Fracture Does not occurs any cup and cone shape work piece breaks with a rough flat surface Flat Rough Surface

Conditions/Modes of Fracture Excessive elastic deformation Excessive loading condition Fatigue Creep formation Torsion Elastic buckling Strain rate Elastic buckling Fracture Mechanism In Design And Failure Analysis

Methods of protection against Fracture Analysis of Design Selection of material Chemical composition Heat treatment introduces compressive stress Surface treatment (involves Etching and Sizing) Selection of material Fine grain control Fracture Mechanism In Design And Failure Analysis

Questions…