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Lab Report Tensile Testing

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ABSTRACT

Hardness is one of the most important measurement in engineering field. This is used to determine tensile strength and make material selection. In this experiment, 4 materials was tested; Aluminium, Mild Steel, Brass and Copper. The experiment was carried out by using Gunt Universal Testing Machine WP300 located in Materials & Solid Lab, Taylor’s University Lakeside Campus, Malaysia. A specific force was applied on the speciment and the diameter of the impression was measured. This diameter was then used to calculated HB number, this is to determine which material is the hardest. The results were compared to the data found in a literature. From the experiment, Mild Steel was found to be the hardest material with HB number of 119.62 kN/mm2, followed by Aluminium, Brass and Copper with HB numbers of 84.24 kN/mm2, 78.85 kN/mm2 and …show more content…

Brinell uses sphere ball made of Tungsten Carbide an indenter and hence the diameter of the indentation is to be measured in order to calculate the hardness. Vickers uses diamond pyramid as an indenter and width of the indentation is to be measured for hardness calculation, where as, Rockwell measures the depth of the indentation caused by the cone shaped diamond indenter. Figure 1: Gunt Universal Testing Machine WP300 Figure 2: 4 speciments; Aluminium, Mild Steel, Brass and Copper.
In this experiment, a Gunt Universal Testing Machine WP300 with an intender of a 10mm diameter ball was used. The method used in this experiment was Brinell Hardness Testing. The objective of this experiment is to calculate the hardness of each material used in this experiment as well as to compare data obtained with the literature. 4 speciments were to put through the test, which are Aluminium, Mild Steel, Brass and Copper.
2.0 EXPERIMENTAL DESIGN

2.1 Materials

1. 4 pieces of speciments (Aluminium, mild steel, brass and

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