Mechanical testing of metals and polymers - Assignment Example

2. Experimental Procedure: Test Equipment Material Tested Test Speed mm/min Secant Tensile Strength-Metal Universal Tensile Testing machine 0.1% C Steel 0.4%C Steel 0.8%C Steel 1.15%C Steel Tensile Strength-Plastics Universal Tensile Testing machine HDPE, PP-PE, PVC, PC, Acetal (POM), Nylon (PA66), GRN (PA66+glass fibres) 10, 50 & 500 Pendulum Impact Tests Zwick/Roell Pendulum Impact Tester Polypropylene, PVC Vickers hardness Test Vickers Testing Machine 0.1% C Steel 0.2%C Steel 0.4%C Steel 0.

85%C Steel 20 Kg load for () minutes 3. Results Figure 1 Stress-Strain Curve of steel Red 0.1% C Steel Green 0.4%C Steel Blue 0.8%C Steel Orange 1.15%C Steel Fmax Fmax dL at Fmax FBreak dL at break Nr N/mm? N mm N mm 1 414.53 8302.90 6.4 2020 10.7 2 691.64 13853.22 4.9 3930 8.1 3 896.10 17948.63 4.3 6720 5.6 4 1108.75 11098.39 2.7 4030 3.4 dL = Strain Group A and B Hardness of carbon steels (load 20Kg) 1st measurement 2nd measurement 3rd measurement 0.1% Carbon 146 148 153 0.2% Carbon 166 162 170 0.

4% Carbon 209 213 217 0.85% Carbon 255 259 251 Zwick/Roell Pendulum Impact Tester. 1-Jun-15 M/c Model No 5113. Ref No A466690. . 2 Pendulum Impact Test of Polypropylene Series Specimen width b0 Specimen thickness a0 Cross-section Impact energy Impact energy Impact resistance Work contents n = 5 mm mm mm? J % kJ/m? J x 14.53 3.092 44.87 1.50 19.99 33.49 7.50 s 1.015 0.1564 2.759 0.12 1.65 3.07 0.00 ? 6.98 5.06 6.15 8.28 8.28 9.17 0.00 Zwick/Roell Pendulum Impact Tester. 1-Jun-15 M/c Model No 5113.

Ref No A466690. Force 7.5J Material: PVC 2nd Specimen width b0 Specimen thickness a0 Cross-section Impact energy Impact energy Impact resistance Type of test, PIT Work contents Legends Nr mm mm mm? J % kJ/m? J “ 1 15.63 2.98 46.58 0.18 2.41 3.88 Charpy 7.50 “ 2 15.98 2.98 47.62 0.57 7.65 12.05 Charpy 7.50 “ 3 15.87 3.01 47.77 0.23 3.09 4.85 Charpy 7.50 “ 4 15.96 2.95 47.08 0.44 5.91 9.41 Charpy 7.50 “ 5 15.53 2.99 46.43 0.17 2.21 3.57 Charpy 7.50 Fig. 3 Pendulum Impact Test of PVC Series Specimen width b0 Specimen thickness a0 Cross-section Impact energy Impact energy Impact resistance Work contents n = 5 mm mm mm? J % kJ/m? J x 15.79 2.982 47.1 0.32 4.25 6.75 7.50 s 0.2028 0.02168 0.5987 0.18 2.41 3.78 0.00 ? 1.28 0.73 1.27 56.62 56.62 55.96 0.00 4ET002 Thermoplastics 22-10-12 1-2 HDPE; 3-4 PP-PE; 5-7 PVC; 8-10 PC; 11-13Acetal (POM); 14-16 Nylon (PA66); 18-19 GRN (PA66+glass fibres) Nr Specimen width b0 mm Specimen thickness a0 mm S0 mm? Rp 0.2 MPa E-Modulus MPa RB MPa W up to Fmax.

J W up to break J Rm MPa ? Fmax. % ? Break % Speed mm/min 1 9.96 3 30.5 16.05 1173.54 - 3.32 - 29.52 9.10 - 50 2 12.73 3.24 31 18.38 1109.57 14.54 3.14 5.04 30.76 8.42 12.11 500 3 9.86 2.98 29.88 17.66 1534.63 20.64 1.16 130.56 24.90 4.13 395.15 50 4 10.05 3.01 30.25 17.66 1425.01 19.50 1.83 52.05 25.46 5.77