ENCE/ME2140 Department of Mechanical Engineering, SMU H. Y ao and W. Tong (rev. 09/2008) 1 Lab 1 – Part A: Uniaxial Tension Tests Objective To learn about the basic mechanical testing procedure, to determine the tensile stress – strain relationship of several common engineering materials such as steel, aluminum, and brass, and to obtain their mechanical property parameters such as the modulus of elasticity (Young’ s modulus), the yield stress, the ultimate stress, the ductility ratio, the modulus of resilience, and the modulus of toughness based on the uniaxial tensile stress – strain data. Materials, Tools and Equipment Flat sheet metal tension test coupons, micrometer/caliper, ruler/tape measure, and the Instron Model 5582 Universal Materials Testing System with a 50-mm gage mechanical extensometer. Introduction to the Testing System Model 5582 Instron Universal Materials Test ing System The universal materials testing system Model 5582 made by Instron is capable of tensile and compression testing modes within a single frame. Features of Model 5582 Materials Test ing System: Load capacity of 100kN (22,500 lbf) with load measurement accuracy: ±0.4% of reading down to 1/100 of load cell capacity, ±0.5% of reading down to 1/250 of load cell capacity Speed range of 0.001-500 mm/min (0.00004 – 20 in/min) with an accuracy of ±0.1% of set speed1309 mm x 575 mm (51.5 in x 22.6 in) test area Strain measurement accuracy: ±0.5% of reading down to 1/50 of full range Total crosshead travel of 1235 mm (48.6 in) with position control resolution of 0.060 µm (2.4 µin) Position measurement accuracy: ±0.02 mm or 0.05% of displacement (whichever is greater)Up to 500 Hz synchronous data acquisition rate for all channels Hardware control panel for operator convenience Automatic transducer recognition for load cells and extensometers Bluehill® 2 Software compatibility Second test space option Library of ASTM and ISO test methods
