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student_polymer(individual)

student_polymer(individual) - M E 111L Fall 2003 Unit 1...

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M E 111L Fall 2003 Unit 1 Meeting 2: Polymers T 2-5 and Th 2-5 Specimen Gauge Section Dimensions Initial (entire reduced section) Final (cold-drawn region) wo (mm) to (mm) Lr (mm) Lo (mm) wf (mm) tf (mm) Lrf (mm) Lf (mm) LDPE - 1 12.5 6.44 54.5 50 5.6 2.82 424 117.7 50 LDPE - 2 12.51 6.44 54.5 50 5.12 2.54 303 255 500 HDPE 12.5 6.32 53.46 50 3.86 1.68 184 146 50 PMMA 12.67 5.34 54.45 50 12.62 5.23 56.26(at) 50.64 (after) 1 PC - 1 12.49 5.42 56.7 50 9.96 4.1 89.91 10 PC - 2 12.54 5.38 56.7 50 10.51 4.02 90.09 50 Specimen LDPE - 1 102 12 9.4 80.4 LDPE - 2 101 14 10 83.9 HDPE 387 32 13 91.8 PMMA 1390 67 13 1.3 PC - 1 1020 64.1 46 39.7 PC - 2 994 66.3 47 37.4 Stress Relaxation Specimen Initial Gauge Section Dimensions wo (mm) to(mm) Lr (mm) LDPE 12.46 6.31 54.56 50 720 HDPE 12.56 6.3 56.56 50 1640 PC 12.44 5.38 54.85 50 3670 PMMA 12.56 5.29 55.11 1 3620 Specimen Elongation (mm) Stress (at 10s) (MPa) Stress (at 60s) (MPa) LDPE 3.45 6.95 6.03 110 95.4 HDPE 1.72 14.2 11.4 465 373 PC 2.91 51 50 965 939 PMMA 2.67 52.2 49.4 1077 1020 Crosshead Speed (mm/min) Initial Tensile Modulus of Elasticity (MPa) Fracture Strength (MPa) Upper Yield Point (MPa) Lower Yield Point (MPa) Reduction in Area -- Cold Drawing (%) Elongation at Fracture (%) Elongation After Fracture (%) Crosshead Speed (during loading) (mm/min) Max Load (80% UYP/ fracture) (N) Relaxation Modulus (10s) (MPa) Relaxation Modulus (60s) (MPa)
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0 1 2 3 4 5 6 7 0 5 10 15 20 25 30 35 13.67 9.95 31.51 12.58 12.11 9.39 Eng. Stress v. Eng. Strain -- PE Eng. Strain (mm/mm) Eng. Stress (MPa)
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0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0 10 20 30 40 50 60 70 80 67.02 Eng. Stress v. Eng. Strain -- PMMA Eng. Strain (mm/mm) Eng. Stress (MPa)
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-0.2 0 0.2 0.4 0.6 0.8 1 1.2 0 10 20 30 40 50 60 70 Eng. Stress v. Eng. Strain -- PC Eng. Strain (mm/mm) Eng. Stress (MPa)
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0 50 100 150 200 250 300 350 0 500 1000 1500 2000 2500 3000 3500 4000 Stress Relaxation PMMA - Max Load 3620 N Time (s) Load (N)
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0 20 40 60 80 100 120 140 160 0 100 200 300 400 500 600 700 800 Stress Relaxation LDPE - Max Load 720 N time (s) Load (N)
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0 10 20 30 40 50 60 70 80 90 100 0 200 400 600 800 1000 1200 1400 1600 1800 HDPE Stress Relaxation Column C time (s) Load (N)
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0 20 40 60 80 100 120 140 160 0 500 1000 1500 2000 2500 3000 3500 4000 PC Stress Relaxation Column C time (s) Load (N)
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Test Type Tension Relax/Creep Method Na D:\INSTRON\user\ME111L_METHODS\UNIT 1 STRESS RELAXATION.mtD Lab Section Thu 2-5 Operator ID TA User nameTA UT Austin Mechanical Engineering Lab Name:M E 111L Unit 1 Polymers Test date: 9/18/2003 Temperature: Humidity: Note 1: Note 2: Note 3: Geometry: Rectangular Specimen 1 Specimen N HDPE Width: 12.56 mm Thickness: 6.3 mm Length of R 56.56 mm Diameter: 1 mm Inner diame 0.5 mm Outer diam 1 mm Wall thickn 0.5 mm Area: 79.13 mm*mm Linear dens 1 den Sled weigh 9.81 N Loading sp 0 mm Support sp 1 mm Span ratio: 2 Fixture type 3-point Comment: Included Final Width 12.56 mm Final Thick 6.3 mm Final Lengt 56.56 mm a 79.13 mm^2 Final Diame 1 mm Final Inner 0.5 mm Final Outer 1 mm Final Wall t 0.5 mm Final Area: 79.13 mm*mm Final Linea 1 den Time sec Extension m Load N stress (MP strain t' relax mod 0 0 3.48 0.04 0 0.5 0.39 619.15 7.82 0.01 1 0.81 1083.25 13.69 0.01 1.5 1.23 1410.61 17.83 0.02 2 1.65 1643.36 20.77 0.03 2.5 1.73 1531.07 19.35 0.03 3 1.72 1453.8 18.37 0.03 3.5 1.72 1407.11 17.78 0.03 0 4 1.72 1370.81 17.32 0.03 0.5 4.5 1.72 1341.53 16.95 0.03 1 5 1.72 1316.5 16.64 0.03 1.5
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5.5 1.72 1294.69 16.36 0.03 2 6 1.72 1275.27 16.12 0.03 2.5 6.5 1.72 1259 15.91 0.03 3 7 1.72 1243.56 15.72 0.03 3.5 7.5 1.72 1229.92 15.54 0.03 4 8 1.72 1217.04 15.38 0.03 4.5 8.5 1.72 1205.19 15.23 0.03 5 9 1.72 1194.06 15.09 0.03 5.5 9.5 1.72 1184.24 14.97 0.03 6 10 1.72 1174.62 14.84 0.03 6.5 10.5 1.72 1165.99 14.74 0.03 7 11 1.72 1157.33 14.63 0.03 7.5 11.5 1.72 1149.32 14.52 0.03 8 12 1.72 1141.88 14.43 0.03 8.5 12.5 1.72 1134.94 14.34 0.03 9 13 1.72 1128.39 14.26 0.03 9.5 13.5 1.72 1122.29 14.18 0.03 10 465.45 14 1.72 1115.75 14.1 0.03 10.5 14.5 1.72 1109.94 14.03 0.03 11 15 1.72 1103.69 13.95 0.03 11.5 15.5 1.72 1098.96 13.89 0.03 12 16 1.72 1093.08 13.81 0.03 12.5 16.5 1.72 1089.16 13.76 0.03 13 17 1.72 1083.56 13.69 0.03 13.5 17.5 1.72 1079.06 13.64 0.03 14 18 1.72 1074.03 13.57 0.03 14.5 18.5 1.72 1070.4 13.53 0.03 15 19 1.72 1065.66 13.47 0.03 15.5 19.5 1.72 1062.49 13.43 0.03 16 20 1.72 1058.36 13.38 0.03 16.5 20.5 1.72 1054.41 13.33 0.03 17 21 1.72 1050.81 13.28 0.03 17.5 21.5 1.72 1046.68 13.23 0.03 18 22 1.72 1043.72 13.19 0.03 18.5 22.5 1.72 1039.97 13.14 0.03 19 23 1.72 1037.58 13.11 0.03 19.5 23.5 1.72 1033.66 13.06 0.03 20 24 1.72 1030.86 13.03 0.03 20.5 24.5 1.72 1027.82 12.99 0.03 21 25 1.72 1024.18 12.94 0.03 21.5 25.5 1.72 1021.83 12.91 0.03 22 26 1.72 1018.53 12.87 0.03 22.5
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