design or structure. These internal forces create stress and strain that could result in failure or deformation. This lab looked at how an aluminum cantilevered beam performed under symmetric and unsymmetrical bending as well as the stresses and strains developed as a result. Objective “To study the stress and strain induced in an I-beam under symmetric and unsymmetrical bending” [2]. Theory: σ – Normal stress (Mpa) ε – Strain (mm/mm) M – Moment (kN∙m) I – Moment of inertia (mm^6) E
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Piezoresistive effect is a change of electrical resistance of a conductor under axial strain. One of the main quantitative variables of piezoresistive effect is strain gauge factor (SGF). SGF is relative change of electrical resistance divided to mechanical strain (relative change of the length of the conductor). Commercial strain gauges are made with metallic and semiconducting sensing elements. SGF of metallic gauges is from 2 to 6‚ and for semiconducting ones it is from 40 to 200 in absolute value
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Department of Civil Engineering CIVL 2002 Engineering Geology & Rock Mechanics (2013-2014‚ Semester 1) Laboratory Session 2 BRAZILE TEST XING BODONG 3035022904 Subclass Group C November 10‚ 2013 The University of Hong Kong Abstract The Brazil test is intended to measure the uniaxial tensile strength of prepared rock specimens indirectly. It is an indirect tensile testing of rock. The Brazil test provides an alternative to direct tensile testing‚ producing
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to fail depends upon both material properties and the part geometry. This experiment involves testing to determine the relative properties. 2. OBJECTIVES 1. To understand the principles of tensile testing machine. 2. To observe the stress-strain relationship for several standard materials by performing a tensile test. 3. To obtain approximate values from stress-stain curve such as percentage of elongation‚ Yield Strength; Tensile Strength and Modulus of Elasticity‚ E. 3. LEARNING
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Structural Analysis Laboratory EXPERIMENT NO. 1 Aim: - To verify strain in an externally loaded beam with the help of a strain gauge indicator and to verify theoretically. Apparatus: - Strain gauge Indicator‚ weights‚ hanger‚ scale‚ verniar caliper. Formula: - f = M y I Theory : - When a beam is loaded with some external loading‚ moment & shear force are set up at each strain. The bending moment at a section tends to deflect the beam & internal stresses tend to resist its bending. This internal
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Young’s Modulus of Elasticity of different materials of beam simply supported at ends. 8) To determined Shear Test on Metals. 9) To determine the Stiffness of the Spring and Modulus of Rigidity of the Spring wire 10) To Study various types of Strain Gauges. 11) To determine Compressive Strength Of Brick. Strength Of Materials Department of Civil Engineering EXPERIMENT NO. – 01 AIM: - Study of Universal Testing Machine (U.T.M.) OBJECT: - To Study the various component parts of the Universal
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Page 1/3 09/2010 SE 110.22 Forces in an Overdeterminate Truss The picture shows SE 110.22 in a frame similar to SE 112. * Comparison of forces in statically determinate and overdeterminate trusses1 * Bars with strain gauge full bridges to measure bar force1 * Computerised evaluation of experiments Technical Description Overdeterminate trusses are employed where overdimensioning is purposely required because safety must be maintained in the event of failure of an element‚ such as in aircraft
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Students adjust a load cell that bends the beam and‚ when connected to the optional Digital Force Display (STR1a‚ available separately)‚ it measures the bending force (load). Strain gauges and a digital strain bridge measure the strains in the beam. Dummy strain gauges compensate for temperature variation and balance the strain bridges. The equipment includes a lead for connection to the Digital Force Display (STR1a‚ available separately). The lecturer guide provides details of the equipment including
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DEPARTMENT OF MECHANICAL ENGINEERING COLLEGE OF ENGINEERING UNIVERSITY TENAGA NASIONAL Mechanics and Materials Lab Manual MEMB221 Semester 2 2014/2015 TABLE OF CONTENTS ITEMS PAGES Laboratory & Reports: An Overview 3 Guidelines for Informal Laboratory Report 4 Guidelines for Formal Laboratory Report 6 Basic Laboratory Safety Rules 8 Experiment 1 Tensile Test 9 Experiment 2 Torsion Test 14 Experiment 3 Bending Test 20 Experiment 4 Buckling Test 23 Experiment 5 Hardness Test
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contact with the load ring. Water is filled in and the required pressure (50‚ 100‚ 150kPa) is applied. d. The strain dial gauge on the pillar is adjusted to read zero or a convenient initial reading. The initial reading of the load and strain dial gauges are adjusted‚ and then the compression test is started. Normally‚ the rate of strain applied is 2% per minute until the strain of 20% is reached. The test is repeated on the other two specimens but with different applied pressure so that at least
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