Hardness Test - ISTANBUL TECHNICAL UNIVERSITY MECHANICAL...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
ISTANBUL TECHNICAL UNIVERSITY MECHANICAL ENGINEERING FACULTY IML211E MANUFACTURING PROPERTIES OF MATERIALS HARDNESS TESTING REPORT Name : Arda Surname : ÇELİKCAN Student ID : 030040305 Group : A Date : 06.11.2006
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
ABSTRACT Hardness is a property which means material’s resistance to penetration of the surface. This usually expressed in terms of indentation,bending,straching and abrasion.Hardness testing is a method that measures the resistance to penetration of the surface of material. Mechanical properties like yield strength,microstructure. .etc. are related to hardness. Resistance to local plastic deformation has direct proportion with hardness.There are three methods which are commonly used to measure hardness of a material;Brinell,Rockwell and Vickers.In Brinell test,for measurement a hard steel ball,in Rockwell and Vickers a diamond shaped indentor are forced to the surface of material.And then by tests’ special equations hardness can be stated. TABLE OF CONTENTS _Introduction _Experiment Procedure _Results _Discussions _Conclusion _References
Background image of page 2
INTRODUCTION Hardness test measures a materials’ resistance to penetration.A harder material has more resistance to abrasion,bending,straching and indentation than a soft material.Mechanical properties like yield strength,ultimate tensile strength,microstructure,strain hardening etc. .have an exactly connection with hardness.Brinell,Rockwell and Vickers are well known methods for hardness. EXPERIMENT PROCEDURE BRINELL TEST To measure hardness with Brinell test a hard steell ball is used.It is so important important that to choose the correct ball diameter,D,and according to the ball diameter force which will applied calculated correctly from this equation; F=A.D 2 Where D is the ball’s diameter,K is the constant,for example 5 for aluminum,10 for copper,30 for steel and iron.F is in kilograms and D is in milimeters. For steels and irons,usually 3000kgf
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/02/2012 for the course IML 313 taught by Professor Celalettinergun during the Spring '11 term at Istanbul Technical University.

Page1 / 9

Hardness Test - ISTANBUL TECHNICAL UNIVERSITY MECHANICAL...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online