To incorporate the devulcanized rubber into a virgin tire compound for material cost- reduction ; •To study the impact of devulcanized rubber utilization on tire compound performance ; •Mooney viscosity •Curing characterizations •Tensile properties ( Tensile strength‚ Elongation at break) •Hardness •Hysteresis (heat build up) •Cut and chip (% of mass loss) 20 12 Objectives 120 Mooney Viscosity Devulcanization Valve Feeder CO2 Cylinder 50 rpm 200 C Syringe
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markedbyteachers.com Abstract The tensile test is widely used to provide basic design information on the strength of materials and as an acceptance test for the specification of materials. The teaching and learning of tensile testing was based on laboratory experiments used in the Mechanical Engineering Laboratory (CM180) at the City University. The experiment looked at how the microstructure of a material can affect its properties. It also introduced tensile testing and stress-strain curves
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Lab report Introduction This mechanical testing is demonstrated the relationship between stain and stress for a certain material while it undergoes a tension force. And define the type of facture of them‚ which are two metallic‚ copper and low carbon steel and two polymeric‚ acrylic and acetone. Background Stress-strain curves show the response of material to an applied stress. It’s depend on the strain rate‚ temperature‚ and environmental conditions. They allow important information such
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Investigating the effect of heat on the tensile strength of human hair Contents page 1. Abstract (summary): Daily care damages human hair and renders cavities‚ or holes in the endocuticle‚ damage such as this to the hair can be from daily use of heat appliances. The aim of this investigation is to find out whether hair that has been damaged due to heat can be strengthened by apply a conditioner. The hair was heated at 200 degrees in an oven and once removed divided into two different
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management summary. In English reports it is found right at the beginning‚ even before the table of contents‚ and not at the end as in Dutch reports is customary. The executive summary should give a short and condensed account of the entire report. It should give some background information‚ define the problem‚ report on the analysis and give conclusions and recommendations. The executive summary: • is meant for (external) readers to see if they wish to read the full report • summarises introduction
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cross-sectional area of 0.25 in2 is stretched between two fixed points. The tensile load at 70°F is 1200 lb. What will be the stress at 0°F? At what temperature will the stress be zero? Assume α = 6.5 × 10-6 in/(in·°F) and E = 29 × 106 psi. Solution 261 For the stress at 0°C: answer For the temperature that causes zero stress: answer problem 262 A steel rod is stretched between two rigid walls and carries a tensile load of 5000 N at 20°C. If the allowable stress is not to exceed 130
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RSAMI – GROUP II ‘Testing the competence of the Stroop test when taken by undergraduate students with pairs of words and colours that are congruous‚ incongruous and semantic.’ ABSTRACT This experiment was conducted using a semantic variation in addition to the original Stroop test to determine the difference in reaction times when applied to congruent‚ incongruent and semantic words and colours. The experiment was conducted with a sample of 20 (17 female‚ 3 male) junior freshman psychology
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parallel bearing surface. These specimens were perpendicular to the axial load during all the tests‚ as shown in Fig. (3.15) and (3.16). Fig. (3.15): Preparation of cube specimens Fig. (3.16): Preparation of cylinder specimens 3.6. Test procedure: This section highlights the procedures used for testing the FBLWC specimens EXPosed to compression
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B-7.1 GPPS No. | Width (A)‚ mm | Thickness (W)‚ mm | Energy‚ J | Joules/Fracture Surface‚ J/m² | 1 | 11.09 | 3.28 | 0.122 | 3353.93 | 2 | 11.09 | 3.28 | 0.129 | 3546.37 | HIPS No. | Width (A)‚ mm | Thickness (W)‚ mm | Energy‚ J | Joules/Fracture Surface‚ J/m² | 1 | 11.09 | 3.28 | 0.280 | 7697.55 | 2 | 11.09 | 3.28 | 0.316 | 8687.24 | HDPE No. | Width (A)‚ mm | Thickness (W)‚ mm | Energy‚ J | Joules/Fracture Surface‚ J/m² | 1 | 11.09 | 3.28 | 0.205 | 5635.71 | 2 | 11.09 |
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MECHANICAL SHAKER 2. L.A. ABRASION TESTING MACHINE 3. COMPRESSION TESTING MACHINE 4. UNIVERSAL TESTING MACHINE 5. TENSILE TESTING MACHINE A. MECHANICAL SHAKER This machine is usually used during a gradation test The said shaker has the capacity of approximately 10 to 20 kilograms. Mechanical Shakers can be used for design qualifications‚ end product reliability and fatigue testing‚ environmental
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