Example long laboratory report mechanical properties of. For structural applications of materials such as bridges, pressure vessels, ships. To be familiar with the material testing machine810le4 and provide a. E equation 1 where p is the load in newtons force read from the loaddisp. During the course of the tensile load application the computer will monitor. Requirements for the experiment a tensile specimen correct dimensions b instron mechanical testing machine c vernier caliper brief description of the equipmentmachine universal testing machine uts used for this experiment is a 10 ton capacity instron testing machine. The main principle of the tensile test is denotes the resistance of a material to a tensile load applied axially to a specimen. In the tension test, a steel rod is subjected to tension load by the means of a universal testing machineutm. Astm e8 standard test methods for tension testing of metallic materials and b557 standard test methods for tension testing wrought and cast aluminum and magnesiumalloy products see attachments specimens. In this experiment, you will measure the strain in a bar using a strain gauge, and the elongation of the bar under load using an extensometer.
Chapter 3, uniaxial tensile testing chapter 4, tensile testing equipment and strain sensors tensile specimens and testing machines tensile specimens. Tensile test g roup one d avid b rowne 851594 objectives the objective of this experiment is to investigate the behavior of two material specimens under a tensile test. Leonardo da vincis tensile tests in his notebooks ca, 82vb leonardo da vinci describes an experiment for studying the tensile strength of wire, entitled, testing the strength of iron wires of various lengths. Tensile testing of steel see web for typical report format including. Figure 1 tensile test machine the specimen that being tested is given some force in two directions, which is in unaxial direction. Experimentally determine the yield strength, tensile strength, and modules of elasticity and ductility of given materials.
We will look at a very easy experiment that provides lots of information about the strength or the mechanical behavior of a material, called the tensile test. The tensile test experiment can be used to determine other mechanical characteristics of the specimen like yield strength, percentage elongation, and ultimate strength among others. Pdf objectives students are required to understand the principle of a uniaxial tensile testing and gain their practices on operating the. Redirection to download tensile test lab report aluminium pdf after seconds thanks for participating. The object of this experiment is to measure the tensile properties of two polymeric materials, steel and aluminum at a constant strain rate on the tension. Mar 20, 2018 tensile test tensile test is a method used to measure the strength of an material by giving a static load on unaxial direction of the specimen. The minimum parallel length l c is the minimum length over which the specimen must maintain a constant cross sectional area before the test load is applied the lengths l 0.
Standard test methods for tension testing of metallic materials1. Final report on inreactor tensile tests on ofhc copper and. The original gauge lengthlo, diameter do or cross sectional area also used in calculations hence should be recorded. The important part of the specimen is the gage section. Properties that are directly measured via a tensile test are ultimate tensile strength, breaking strength, maximum elongation and reduction in area. This experiment also familiarized the students with the instron load frame, bluehill data acquisition software, and the general steps to performing a tensile test on a reduced gage section specimen. The data collected was the position and load of what was. Standard test methods for tension testing of metallic. The data collected was the position and load of what was going on to a sample material. Tensile properties frequently are included in material specifications to. The equipment arrangement and procedure for conducting the tension. Specimens with this final heattreatment were used for the inreactor tensile tests at 393k.
The idea of this tensile test experiment is to calculate the specific material properties from each material tested and see how they compare to a standard reference of the same materials properties already provided in the real world. Mention physical state, surface imperfections and so on. The object of this experiment is to measure the tensile properties of two polymeric materials, steel and aluminum at a constant strain rate on the tension testing machine. The radioss material laws 2, 27 and 36 are used to reproduce the experimental data of a traction test by simulation. Since the slope of the elastic portion of the stress versus strain curve often varies, different methods, such as secant and tangent methods, have been developed to. The website of the austrian research center, materials and technology. Determination of the tensile properties of different class of materials. Tension test on the given specimens at least 2 materials for comparison and to plot the stress strain graphs.
Experiment one tensile stress test experiment one 1 tensile stress testing introduction the purpose of this experiment is to apply a tensile force to a test specimen until the specimen is pulled to failure. Cast iron rockwell b test brinell 10500 hardness test average 96. If you had tensile tested a specimen to about half way between where it yielded and when you expected the tensile stress to be reached, then stopped the test, removed the sample, and later decided to test it again, what would the yield strength be during the second test. The hardness test is preferred because it is simple, easy, and relatively nondestructive. Reference may also be made to additional testing requirements found in astm a370. During a forming operation a material may be bent or pulled to the new. These characteristics might useful for material testing reference. For the tensile test experiment, data was collected from using an mts machine and lab computer.
The materials used were two different types of aluminum and steel. The basic idea of a tensile test is to place a sample of a material between two fixtures called grips which clamp the material. One material property that is widely used and recognized is the strength of a material. Experiment 4 testing of materials in tension object. Tensile test method for the determining of the structural properties of individual carbon fibers carlton metcalfdoetsch honors mentor. It relates the effect of a uniaxial tensile load force on the elongation change in length of a standard specimen.
Tensile test experiment materials science and engineering. Abstract tensile test method for the determining of the. To study the various component parts of the universal testing machine u. During the tensile test pieces can fly out during fracture. This lab will also help familiarize students with graphs of strain and load. Introduction tensile testing is one of the simplest and most widely used mechanical tests. Tensile testing experiment instructions flashyscience. In this figure, the gauge length l 0 is the length over which the elongation of the specimen is measured. Example 11 tensile test summary the material characterization of ductile aluminum alloy is studied. Strength can have many meanings, so let us take a closer look at what is meant by the strength of a material.
Steel reinforcement bar rebar a tensile testing guide. The tensile test is method to measure the mechanical properties of materials. We have to make sure the test specimen is tied orderly at grips for holding test specimen firmly at fixed head in order to avoid the specimen became loosen from that machine during the experiment. With the advancement and continuing integration of composite materials and technology in todays modern industries, research in this field is becoming more and more significant. To conduct a tensile test on a mild steel specimen and determine the.
A strain control unit for applying strain to samples. From knowledge of the specimen geometry we can calculate the engineering stress and strain from the load vs. The workhardening, damage and rupture of the specimen are simulated by a finite element model. Tensile test purpose, graph, results, specimen details. Tensile testing of metals objective the tensile test measures the resistance of a material to a static or slowly applied force. Mar 02, 2018 the mechanical properties which were determined were youngs modulus, yield strength, ultimate strength, percentage elongation after fracture, percentage reduction of area, nominal stressstrain diagram and true stressstrain diagram 1. Uniaxial tension and compression testing of materials.
Accurate values for these beams deflections are sought in many practical case. From these measurements the following properties can also be determined. Tensile testing and hardness testing of various metals. Sep 25, 20 for this section of the laboratory experiment, a metal cu, 99. Tensile testing, also known as tension testing, is a fundamental materials science and engineering test in which a sample is subjected to a controlled tension until failure. Experiment two beam deflection experiment three 3 tensile stress testing introduction. Below is a snap shot of an actual tensile test being taken on a sample material. A tensile test frame for holding samples and applying a tensile load. Feb 10, 2016 brass rockwell b test brinell 10500 hardness test average 71. Do not remove specimens from abrasive cutoff machine until the wheel has stopped.
In this experiment, the two unknown steel are being tested using tensile test. Lab report engineering materials lab tensile test slideshare. These machines were manufactured by the applied test systems corporation and we usually refer to them as the ats machines, or load frames. The axis of the beam deflects from its initial position under action of applied forces. Determine tensile strength of a given specimen using utm. This laboratory experiment is designed to demonstrate the procedure used for obtaining mechanical properties as modulus of elasticity, yield strength, ultimate tensile strength uts, toughness, uniform elongation. Specimens that would be used are general purpose polystyrene. A tensile test is carried out on standard tensile test specimen in universal testing machine. Tensile test purpose, graph, results, specimen detail. Analysis and experiment of 7075 aluminum alloy tensile test. A load dial for measuring the applied load force to samples.
The results of tensile tests are used in selecting materials for engineering applications. Briefly describe the samples used for this experiment as summarized in table 2. The materials to be investigated are copper and steel. Tension test is performed on mild steel, tor steel and high tensile steel to determine the properties like youngs modulus, ultimate strength, and the percentage elongation. Final report on inreactor tensile tests on ofhc copper. The main instruments used in this experiment are the uniaxial testing machines. Dec 09, 2020 analysis and experiment of 7075 aluminum alloy tensile test dyicheng chen, cisyong you, fuyuan gao department of industrial education and technology, national changhua university of education. To conduct a tensile test on a mild steel specimen and determine the following. These measurement devices are described in a later section. Tensile strength dcheft1a01 group a loh jia jun 16717 26 april 20 materials in practice cp4088 a synopsis the main objective of tensile testing is to determine the tensile strengths and tensile modulus of different materials. Object the purpose of this experiment is to understand the uniaxial tensile testing and provide knowledge of the application of the tensile test machine. The software is user friendly, intuitive and it looks good on the screen, with graphics that resemble real laboratory equipment. This steel testing standard covers the mechanical testing of steel products.
Consider the typical tensile specimen shown in fig. It is very important to the tensile test to be considered is the standard dimensions and profiles are adhered to. E, 1 mpa 106 pa engineering strain is the change in length of the. Mar 25, 2018 tensile, compression, and compact tension testing procedures you should also refer to the admet testing procedures pdf below that details the proper steps for safely operating the test machine using mtestquattro for the tensile, compression, and compact tension tests. The tensile test measures the resistance of a material to a static or slowly applied force. Experiment i tension test of metals course section. In addition, this lab will demonstrate the usage of tools like the extensometer and the tensile test machine. It then includes further reference to the primary metals tensile testing standard, astm e8. Strength of materials lab manual pdf sm lab manual pdf. Pdf analysis and experiment of 7075 aluminum alloy tensile test.
1190 1797 1348 250 1513 1834 918 1572 332 152 1480 1698 439 1026 499 747 50 290 98 1707 748 348 1025 1110 1545 161 651 696 1786 366 1595 1476 977 48 113 497 1636