Hardness test of metals: An experiment using the Brinell test and the Rockwell test
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6 word format
document in English
physics & chemistry
presentation
published 20/07/2008
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Summary
Hardness has been defined in several ways over time, mostly by physicists, metallurgists and engineers. Different definitions range from hardness being defined as a collection of properties of a material more or less related to each other to resistance to permanent indentation. The difficulty to define hardness fundamentally indicates that hardness is not a basic property of a material, but instead, it is a composite of yield strength, work hardening, true tensile strength, modulus, and others factors.This paper investigates Hardness Test of Metals. In particular, it focuses on performing hardness tests on various metal specimens using the Brinell Test and the Rockwell Test. In Brinell Test the experiment concludes that the smallest indentation is close to the welded fracture indicating that the material is the harder in welded area compared with the middle of the sample. In Rockwell Test the experiment concludes that hardening of metal materials occurs during its straining because the molecules that float around within the material bound together causing friction and produce heat. This molecular regrouping gave additional strength to the material.
Keywords: Brinell Test, Rockwell Test
Keywords: Brinell Test, Rockwell Test
Table of Contents
- Abstract.
- Introduction.
- Defining hardness.
- Measuring hardness.
- Hardness testing.
- Brinell test.
- Rockwell test.
- Experiment procedure.
- Summary of results.
- Conclusions.
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