Tensile test discussion pdf

The data produced in a tensile test can be used in many ways including. E691 practice for conducting an interlaboratory study to determine the precision of a test method. By doing this, tensile tests determine how strong a material is and how much it can elongate. A tensile test applies tensile pulling force to a material and measures the specimens response to the stress. Consider the typical tensile specimen shown in fig. Introduction tensile testing is one of the simplest and most widely used mechanical tests. Tensile test lab report yield engineering deformation. A tensile test is carried out on standard tensile test specimen in universal testing machine. Tensile testing and hardness testing of various metals technical report submitted to. The important part of the specimen is the gage section.

Minutes of the proceedings of the institution of civil engineers. As a result of comparison of miniature specimen with standard specimen indicated that uts value of miniature specimen is 24. In the tensile test of 45 specimens, the slope of the stressstrain curves becomes steeper where the strain reaches around 0. Tensile data analysis comments analysis of tensile data. Uniaxial tensile testing uniaxial tensile test is known as a basic and universal engineering test to achieve material parameters such as ultimate strength, yield strength, % elongation, % area of reduction and youngs modulus. Lab report tensile test introduction the purpose of this. Tensile testing and hardness testing of various metals. If you have a way to hang one end of some material from a solid point that does not move, then you can hang weights on the other end. The main instruments used in this experiment are the uniaxial testing machines.

It is also possible to apply micro hardness testing by keeping the force between 5 grf and 2 kgf in vickers scale. The forces throughout the sample and test machine are constant, but the stress varies with cross sectional area. The test unit will be introduced in the laboratory before the experiment by the relevant assistant. Example long laboratory report mechanical properties of. This test is a destructive method, in which a specimen of a standard shape and dimensions prepared according to astm d 638tandard test method for tensile properties of. Tensile tests are very simple, relatively, inexpensive, and fully standardized. Rockwell test in the rockwell test, a diamond cone or a hard steel ball is employed as the indenter depending on the hardness of materials. The purpose of this lab was to apply the tensile test for two different materials steel and aluminum in order to determine the stressstrain relationship in them.

E1012 practice for verification of testing frame and specimen alignment under tensile and compressive axial force application. Tensile test refers to the methods of determining the mechanical properties of material when subjected to uniaxial load. Crosshead displacement an overview sciencedirect topics. Standard test method for tensile properties of geotextiles by. Below is a snap shot of an actual tensile test being taken on a sample material. As mentioned earlier the tensile test is used to provide information that will be used in design calculations or to demonstrate that a material complies with the requirements of the appropriate specification it may therefore be either a quantitative or a qualitative test. Tensile data analysis the tensile example document presents a method to generate a stressstrain curve from test data. An analysis of tensile test results to assess the innovation risk for an additive manufacturing technology article pdf available in metrology and measurement systems 221. Example long laboratory report mechanical properties of 1018. This visual representation helps to guide the determination of material properties for design. Tensile testing of metals objective the tensile test measures the resistance of a material to a static or slowly applied force.

Figure 1 tensile test machine the specimen that being tested is given some force in two directions, which is in unaxial direction. Nov 22, 2010 tensile testing provides data on the integrity and safety of materials, components and products, helping manufacturers ensure that their finished products are fitforpurpose and manufactured to the highest quality. 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. 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. The topic of this lab is confined to the tensile property of polymers. 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 tensile testing laboratory was conducted using an instron load frame and the bluehill data acquisition software. Abstract this experiment was conducted so as compare the mechanical properties of aluminium and mild. Concepts the linear relationship is hookes law that represents elastic deformation. Tensile testing is a destructive test process that provides information about the tensile strength, yield strength, and ductility of the metallic material. The testing procedure was repeated for the rest of the specimens.

Object the purpose of this experiment is to understand the uniaxial tensile testing and provide knowledge of the application of the tensile test machine. Abstract tensile test method for the determining of the structural properties of individual carbon fibers carlton metcalfdoetsch honors mentor. The samples were cylindrical in cross section, with a reduced gage. It does not appear the extensometer slipped during this tensile test figure 1. Conclusion we were able to successfully tensile test aluminium and mild steel using the universal testing machine, from the data obtained we were able to successfully obtain the youngs modulus, ultimate tensile strength and yield stress values of the two metals. Test load is selected between 1 and 120 kgf depending on the hardness of materials. Pdf objectives students are required to understand the principle of a uniaxial.

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. Experiment 4 testing of materials in tension object. This publication is being made available in pdf format as a benefit to members and. Astm e8 e8m 16ae1 standard test methods for tension. It measures the force required to break a composite or plastic specimen and the extent to which the specimen stretches or elongates to that breaking point. A completed worksheet, steel6150tens is in the help folder. The object of this experiment is to measure the tensile properties of two polymeric materials, steel and aluminum at a. Final report on inreactor tensile tests on ofhccopper and cucrzr. 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. A reduced gage section specimen made from 6061t6 aluminum, ready for tensile testing. Standard test methods for tension testing of metallic materials1. 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. The engineering tensile test is also known as tension test which vary widely used for providing the base of the design information on the strength of material and as an acceptance test for the specification of the materials.

Minutes of the proceedings of the institution of civil engineers, volume 155, issue 1904, 1 jan 1904 170233 correspondence. Because of the steepest slope of the stressstrain curve for tight specimens after reaching strain of 0. Also the yield strength, tensile strength, the changes in length and area, youngs modulus and rupture stress were determined too. Four different materials were tested, including 6061t6 aluminum alloy, a36 hot rolled steel, polymethylmethacrylate pmma, cast acrylic, and polycarbonate. One material property that is widely used and recognized is the strength of a material. A tensile test, also known as a tension test, is one of the most fundamental and common types of mechanical testing. E345 test methods of tension testing of metallic foil. To avoid end effects from the shoulders, the length of the transition region should be at least as great as the diameter, and the total length of the reducedsectionshould.

These important parameters obtained from the standard tensile testing are useful for the selection of. For me lab i, you will usually report your values as mean. Tensile test experiment materials science and engineering. Figure 3dimensional details of tensile test specimens three alloy materials 20mnnimo55, crmov and ss304 ln are used for miniature tensile test. Abstract this experiment was conducted so as compare the mechanical properties of aluminium and mild steel.

Apr 06, 20 lab 2 tensile test abstract the aim behind this experiment was to put mild steel, copper and aluminium through a tensile test, with mild steel being tabulated and graphed to show its properties and how they could be used in the real world. Lab 3 tension test objectives concepts background experimental procedure report requirements discussion objectives experimentally determine the yield strength, tensile strength, and modules of elasticity and ductility of given materials. Pdf an analysis of tensile test results to assess the. Mechanical and physical testing of biocomposites, fibrereinforced composites and hybrid composites, 2019. 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 universal testing machine can be used to determine the tensile strengths of. Standard test method for tensile properties of geotextiles by the widewidth strip method1 this standard is issued under the.

Measure the change in length while adding weight until the part begins to stretch and finally breaks. Tensile testing of steel see web for typical report format including. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. The results can be used to determine the youngs modulus, tensile strength, ductility, toughness and ultimate tensile strength of the materials. The basics on the operation of universal testing machine were also learnt during this experiment. Abstract tensile test method for the determining of the. Strength can have many meanings, so let us take a closer look at what is meant by the strength of a material. A typical instron load frame used for tensile testing. Open pdf minutes of the proceedings of the institution of civil engineers. These machines were manufactured by the applied test systems corporation and we usually refer to them as the ats machines, or load frames.

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