Tensile test lab pdf

Tensile testing is an important materials test to select a specific material for an application, for quality control, and to predict how a material will react. In this test ends of test piece are fixed into grips connected to a straining device and to a load measuring device. Lab report engineering materials lab tensile test 1. The data from each test was used to determine valuable material properties such as ultimate tensile strength, modulus of elasticity, and yield strength. Mechanical testing instructional lab university of illinois board of trustees, 2010 january 2010 version tensile data analysis the tensile example document presents a method to generate a stressstrain curve from test data. Tensile test experiment materials science and engineering.

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. Lab report tensile test introduction the purpose of this. Strain tensile brass trial 1 brass trial 2 aluminum copper steel trial 1 steel trial 2. Furthermore, splitting tensile strength test on concrete cylinder is a method to determine the tensile strength of concrete. The samples were cylindrical in cross section, with a reduced gage.

Two concrete test machine are available for use in fsel. 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. This provides valuable information about materials including ultimate tensile strength, yield strength, elongation and reduction in area. The important part of the specimen is the gage section. The universal testing machine can be used to determine the tensile strengths of. Consider the typical tensile specimen shown in fig. Mar 20, 2018 lab report engineering materials lab tensile test 1.

Example long laboratory report mechanical properties. In the tensile test, for example, it is determined which load a material can withstand until it begins to deform plastically yield strength or under which maximum load the material breaks tensile strength. The material test curves have a region where the deformation caused by the stress is elastic, or not permanent. If there has been some permanent deformation, that. The software required to run the uniaxial tests will be loaded and ready to go when you get to the lab.

The test involves straining a test piece by tensile force, generally to fracture, for the purpose of determining one or more of the mechanical properties defined in clause 4. One material property that is widely used and recognized is the strength of a material. Also the yield strength, tensile strength, the changes in length and area, youngs modulus and rupture stress were determined too. The simple tensile test was performed on each of the four samples. The test is carried out at ambient temperature between 10cand 35 c, unless otherwise specified. The topic of this lab is confined to the tensile property of polymers. Results will provide insight into the materials various tensile properties such as ultimate tensile strength, yield strength, and various.

Your ta will show you how to operate the data acquisition system. 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. A tensile test applies tensile pulling force to a material and measures the specimens response to the stress. Tensile specimens and test machines stressstrain curves, including discussionsof elastic versus plastic deformation, yield points, and ductility true stress and strain test methodology and data analysis it should be noted that subsequent chapters contain more detailed information on these topics. For the tensile test experiment, data was collected from using an mts machine and lab computer. Tensile testing, tensile test laboratory testing inc. In addition to the standard tensile testing that lti performs, we also offer an elevated temperature tensile test, flattening and expansion tests for pipe and tube, bend tests, charpy impact tests and stress rupture tests. The mechanical testing lab possesses several tensile testers the most powerful of which has a maximum force capacity of 400,000lbs, high enough to test all but the most resilient of materials. Example long laboratory report mechanical properties of. Strength and testing of materials engr211204 uploaded by.

The tensile test is most applied one, of all mechanical tests. The material samples used were a36 steel and 6061t6 aluminum. Scope of accreditation tensile testing metallurgical laboratory. The basic idea of a tensile test is to place a sample of a material between two fixtures called grips which clamp the material. Introduction tensile testing is one of the simplest and most widely used mechanical tests. This visual representation helps to guide the determination of material properties for design. We then begin to apply weight to the material gripped at one end while the other end is fixed. This test is a destructive method, in which a specimen of a standard shape and dimensions prepared according to astm d 638. For the brass sample used in this lab, that would only be about 14 %. In this linear region, the line obeys the relationship defined as hookes law where the ratio of stress to strain is a constant. In laboratory studies, since tensile rupture is the most commonly observed failure mechanism in field applications, researchers have generally studied the tensile. Figure 14 gives a visual representation of the apparatus and the setup used for testing. Tensile testing of steel see web for typical report format including.

Steps to check and record brinell hardness of specimen, 3. Both the load stress and the test piece extension strain are measured and from this data an engineering stressstrain curve is constructed, fig. Tensile testing is an important materials test to select a specific material for an application, for quality. E, 1 mpa 106 pa engineering strain is the change in length of the. The data was recorded electronically in text files shown in appendix b and the loaddeflection curve was shown on the computer screen as a visual representation. While many experimental tests exist to determine the mechanical properties, the simplest is the tension test. The specimens were loaded into the instron machine, and a tensile test was performed. 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.

Uniaxial tension and compression testing of materials. Tensile testing and hardness testing of various metals. Tensile test lab report yield engineering deformation. This means when the stress is removed the specimen returns to its original length. The tensile test can also be used to determine the elongation at.

Scope of accreditation tensile testing metallurgical. For structural applications of materials such as bridges, pressure vessels, ships. 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. Properties that are directly measured via a tensile test are ultimate tensile strength maximum elongation and reduction in area. The data used for this lab report was not gathered from the student run experiments, but rather from standardized testing performed by the laboratory professor, to ensure accurate and consistent results. Friday, march 10th 2017 materials engineering laboratory applied physics study program faculty of science and technology sampoerna university. The test unit will be introduced in the laboratory before the experiment by the relevant assistant. Tensile testing is a destructive test process that provides information about the tensile strength, yield strength, and ductility of the metallic material. To study the behavior of the given material under tensile load and to determine the following. Detailed steps required to check ultimate tensile strength using universal testing machine of any specimen, 2. The main body of this procedure is applicable to both test machines. A convenient sample geometry for the tensile test is. This publication is being made available in pdf format as a benefit to members and.

The procedure based on the astm c496 standard test method of cylindrical concrete specimen which similar to other codes lik is 5816 1999. By comparing the values of the two metals we can see that mild steel has higher values in all of the three properties which means. 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. Tensile testing is described, covering test specimen form, determination of the engineering stressstrain curve, and derivation of test results. By doing this, tensile tests determine how strong a material is and how much it can elongate. The tensile test is one of the most important testing methods for characterizing or obtaining material parameters. Tensile testing of metals objective the tensile test measures the resistance of a material to a static or slowly applied force. It consists of two columns with a crosshead and a base. Tensilecreep test specimen preparation practices of. Experiment 4 testing of materials in tension object. Our tensile testing services allow us to deliver critical information relating to the strength, stiffness, and ductility of materials in line with your production requirements and business needs. The data collected was the position and load of what was going on to a sample material.

Friday, march 10th 2017 materials engineering laboratory applied physics study program faculty of science and technology sampoerna university 2017. For most tensile testing of materials, you will notice that in the initial portion of the test, the relationship between the applied force, or load, and the elongation the specimen exhibits is linear. By the amount of stain there was at the yield point. The materials used were two different types of aluminum and steel. 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.

For me lab i, you will usually report your values as mean. The tensile test measures the resistance of a material to a static or slowly applied force. 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 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. 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. Tensile testing, also known as pull testing, is a standard test where a sample is placed in grips and subjected to controlled tension until it fails. Four different materials were tested, including 6061t6 aluminum alloy, a36 hot rolled steel, polymethylmethacrylate pmma, cast acrylic, and polycarbonate.

A convenient sample geometry for the tensile test is the dogbone geometry figure 1. Conclusion we were able to successfully tensile test. Example long laboratory report mechanical properties of 1018. Tensile testing metallurgical laboratory 4520 willow parkway cleveland, oh 44125 tf. Pdf objectives students are required to understand the principle of a uniaxial tensile testing and gain their practices on operating the. The tensile test data are characterized by terminology shown in figure 41. Rockwell b test brinell 10500 hardness test average 99. Tensile testing metallurgical laboratory our services. Strength can have many meanings, so let us take a closer look at what is meant by the strength of a material.

E equation 1 where p is the load in newtons force read from the loaddisp. The testing machine can be used for tensilecompressive test, torsion test, bend flexural test, and also for high temperature tensile tests. The material has known dimensions, like length and crosssectional area. Tensile tests are very simple, relatively, inexpensive, and fully standardized. Tensile testing is a destructive mechanical testing method that subjects a sample to uniaxial tension until failure.

A tensile test, also known as a tension test, is one of the most fundamental and common types of mechanical testing. Do not remove specimens from abrasive cutoff machine until. Tensile data analysis comments analysis of tensile data. In this lab, we will use a load frame to apply a tensile load to a coupon of an aluminum alloy. Tensile testing also known as tension testing,is a fundamental materials science test in which a sample is subjected to a controlled tension until failure. Splitting tensile strength of cylindrical concrete specimen. 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 load frame in our lab is an instron 5982 see figure 4 that is capable of delivering 100 kn of axial force to the specimen for testing purposes. These mechanical tests are performed on bars, plates and shaped products. Concepts the linear relationship is hookes law that represents elastic deformation. Tensile test method for the determining of the structural properties of individual carbon fibers carlton metcalfdoetsch honors mentor. During the tensile test pieces can fly out during fracture. The basics on the operation of universal testing machine were also learnt during this experiment.

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