Material_thingy_report

Material_thingy_report - NANYANG TECHNOLOGICAL UNIVERSITY...

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

View Full Document Right Arrow Icon
LABORATORY REPORT FOR WORK HARDENING CHARACTERISTICS OF SHEET METALS Figure : A picture of the Instron indenting machine Figure 2: Ecomet 2 roll grinder Figure 3: In the process of cutting the specimen. Figure 4: Copper specimens in the plastic mold. Table 1: Data collated for the Cu sample Table 1: Data collated for the Cu specimen Table 2: Data collated for the Al specimen Table 2: Data collated for the Al sample Graph 1: Stress-Strain curve for Cu specimen Graph 2: Stress-Strain curve for Al specimen NANYANG TECHNOLOGICAL UNIVERSITY WORK HARDENING CHARACTERISTICS OF SHEET METALS NANYANG TECHNOLOGICAL UNIVERSITY SCHOOL OF MECHANICAL AND AEROSPACE ENGINEERING P2.15 – WORK HARDENING CHARACTERISTICS OF SHEET METALS LABORATORY: WORKSHOP (MANUFACTURING ENGINEERING DIVISION) LOCATION: N3 – B4 – W211 2007/2008 Name of Student: Mohamed Tahir Bin Abdul Rahim Matriculation No: 068310K03 Laboratory Sub-Group: 08 A Date: 26 th March 2008 P2.15 WORK HARDENING CHARACTERISTICS OF SHEET METALS NANYANG TECHNOLOGICAL UNIVERSITY
Background image of page 1

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

View Full DocumentRight Arrow Icon
NANYANG TECHNOLOGICAL UNIVERSITY WORK HARDENING CHARACTERISTICS OF SHEET METALS Name of Supervisor: Professor Sivakumar TABLE OF CONTENTS 1. Objectives 3 2. Introduction 3 3. Equipment 3 - 4 4. Experimental Procedures 4 - 5 5. Experimental Results 5 - 8 5.1 Tabulated Tests Results 5 - 6 5.2 Stress-Strain Curves 7 5.3 Micrographs 8 6. Discussions and Observations 8 - 9 6.1 Difficulties Faced 8 6.2 Discrepancies in the curves plotted 8 6.3 Effects of temperature and strain rate 9 6.4 Reliability and advantages of using Watts and Ford Indenting Test 9 7. Conclusion 9 References 10 Appendices: Appendix A: Micrographs of Cu specimens Appendix B: Micrographs of Al specimens P2.15 WORK HARDENING CHARACTERISTICS OF SHEET METALS NANYANG TECHNOLOGICAL UNIVERSITY
Background image of page 2
NANYANG TECHNOLOGICAL UNIVERSITY WORK HARDENING CHARACTERISTICS OF SHEET METALS 1. OBJECTIVES The objectives of this laboratory are to: Understand how a Watts & Ford indenting tests are done and plot the corresponding stress-strain curves. Prepare metallurgical samples of Aluminium (Al) and Copper (Cu) before and after deformation once subjected to different strains. Study and discuss the grain distortion and other metallurgical changes under a micrograph. 2. INTRODUCTION Sheet metal products are manufactured by various means. Some of the processes involve deep drawing and bending. The sheet metal will then be put under large stresses and this will cause the metal to deform. Thus a Watts and Ford Indenting Test is done to ensure the metals are able to withstand the stresses faced. Due to this also the understanding of plasticity theory is important. When a metal deforms plastically, its yield stress increases as the strain increases. This method is a strengthening mechanism for materials and is commonly known as strain hardening. Even thought the Watts and Ford indenting test is compressive, a stress-strain curve can still be plotted. Nonetheless, a correction factor is required.
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 10/22/2009 for the course PHY PHY taught by Professor Loh during the Spring '09 term at Nassau CC.

Page1 / 13

Material_thingy_report - NANYANG TECHNOLOGICAL UNIVERSITY...

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