The material test curves have a region where the deformation caused by the stress is elastic, or not permanent. 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. While many experimental tests exist to determine the mechanical properties, the simplest is the tension test. 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 of the first standards relating to tensile testing was report no 3 issued in. What is the material test report mtr mill test report. Tensile strength the maximum engineering stress experienced by a material during a tensile test ultimate tensile strength. The specimen was removed, and the crosshead was reset to the initial position to start another tensile test. From performing the tensile test the following properties will be determined. Tensile testing at ambient temperature issued by the international organization for. The basics on the operation of universal testing machine were also learnt during this experiment. The procedure based on the astm c496 standard test method of cylindrical concrete specimen which similar to other codes lik is 5816 1999.
Example long laboratory report mechanical properties of. The universal testing machine can be used to determine the tensile strengths of. Standard test method for tensile properties of adhesive. 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. Two concrete test machine are available for use in fsel. Uniaxial tension and compression testing of materials. Express the result in grams per square millimetre pounds per square inch and if possible report to three signi. This test is a destructive method, in which a specimen of a standard shape and dimensions prepared according to astm d 638. 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. Type of report and period covered technical report 14.
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. For the love of physics walter lewin may 16, 2011 duration. Report in your laboratory reports must have the followings. From knowledge of the specimen geometry we can calculate the engineering stress and strain from the load vs. Also the yield strength, tensile strength, the changes in length and area, youngs modulus and rupture stress were determined too.
The extensometer gauge length shall be recorded in the test report. The objective of this experiment is to investigate the behavior of two material specimens under a tensile test. Pdf objectives students are required to understand the principle of a uniaxial tensile testing and gain their practices on operating the. The test continued until fracture, where the software stopped the moving crosshead, and finished gathering data. By doing this, tensile tests determine how strong a material is and how much it can elongate. 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. Brass rockwell b test brinell 10500 hardness test average 71. Strain tensile brass trial 1 brass trial 2 aluminum copper steel trial 1 steel trial 2. Standard test method for tensile properties of plastics1. Low ductility in a tensile test often is accompanied by low resistance to fracture under. In your laboratory reports must have the followings. Show the completed lab report and take the signature from your tas.
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. Standard test method for tensile properties of plastics1 this standard is issued under the. Tensile test purpose, graph, results, specimen detail. Each set of materials contain samples before right and after left tensile testing. Splitting tensile strength of cylindrical concrete specimen. Example long laboratory report mechanical properties. Mechanical and physical testing of biocomposites, fibrereinforced composites and hybrid composites, 2019. The software required to run the uniaxial tests will be loaded and ready to go when you get to the. Tensile testing and hardness testing of various metals. 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. The splitting tensile strength will be determined by dividing the maximum applied load by the appropriate geometrical factors. Abstract this report presents the results of a series of experiments performed in the evaluation of nondestructive tensile testing of chip and wire bonds. Lab report engineering materials lab tensile test 1.
Abstract this experiment was conducted so as compare the mechanical properties of aluminium and mild. Abstract this experiment was conducted so as compare the mechanical properties of aluminium and mild steel. Tensile test purpose, graph, results, specimen details. Materials that are sensitive to strain rates exhibit higher tensile strengths and lower elongations at faster speeds. A number in parentheses indicates the year of last reapproval. Below is a snap shot of an actual tensile test being taken on a sample material. Tensile properties for plastics, polymers and steels are very sensitive to testing rates, but aluminum alloys exhibit little sensitivity. Concepts the linear relationship is hookes law that represents elastic deformation. Introduction a tension test is probably the most fundamental type of mechanical test. 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 report tensile test introduction the purpose of this. The main principle of the tensile test is denotes the resistance of a material to a tensile load applied axially to a specimen. 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. The tensile test data are characterized by terminology shown in figure 41.
When a material is tested, the objective usually is to. The tensile test is method to measure the mechanical properties of materials. 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. Abstract a tensile test was conducted on an instron tensile machine using a 316 inch copper rod. Standard test methods for tension testing of metallic. The materials to be investigated are copper and steel. It relates the effect of a uniaxial tensile load force on the elongation change in length of a standard specimen. Tensile testing of steel see web for typical report format including. Friday, march 10th 2017 materials engineering laboratory applied physics study program faculty of science and technology sampoerna university. Conclusion we were able to successfully tensile test. Tensile testing of metals objective the tensile test measures the resistance of a material to a static or slowly applied force. This means when the stress is removed the specimen returns to its original length. The tension test is one of the laboratories which help students develop their knowledge in this course by practice. The purpose of tensile test is to calculate tensile strength.
Brinell test in a standard brinell test 10 mm diameter hardened steel ball is forced to penetrate the material by 3000 kgf for steels and cast irons. This publication is being made available in pdf format as a benefit to members and. The most popular methods are brinell, vickers and rockwell hardness tests for metals and alloys. The testing procedure was repeated for the rest of the specimens.
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. It is very important to the tensile test to be considered is the standard dimensions and profiles are adhered to. During the laboratory a tinnitus olsen tension test equipment was used, and the test samples were from low and high carbon steel and timber with grains parallel and perpendicular to the load. Detailed steps required to check ultimate tensile strength using universal testing machine of any specimen, 2. Using data acquired stress and strain was calculated and plotted on excel to analyze stress strain curve. 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 tensile test, also known as a tension test, is one of the most fundamental and common types of mechanical testing.
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. Furthermore, splitting tensile strength test on concrete cylinder is a method to determine the tensile strength of concrete. 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 gage length l between the fixed lower base and upper fixture was measured to determine the initial length of the sample undergoing uniaxial tension. One material property that is widely used and recognized is the strength of a material. The yield strength, tensile strength, modulus of elasticity, and ductility are obtained. In the material testing laboratory, tensile test was done on a mild steel specimen as figure 4 to identify the youngs modulus, ultimate tensile strength, yield strength and percentage elongation. A convenient sample geometry for the tensile test is the dogbone geometry figure 1.
Tensile test lab report yield engineering deformation. Strength can have many meanings, so let us take a closer look at what is meant by the strength of a material. Cast iron rockwell b test brinell 10500 hardness test average 96. Semiconductor devices were subjected to timetemperature excursions. The rate at which a test is performed can have a significant effect on tensile properties. 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. It is used to characterize the mechanical properties. Tensile testing is one of the simplest and most widely used mechanical tests. Tensile test measures the response of a material to a slowly applied uniaxial force.
Tensile testing is a destructive test process that provides information about the tensile strength, yield strength, and ductility of the metallic material. The material samples used were a36 steel and 6061t6 aluminum. Steps to check and record brinell hardness of specimen, 3. A tensile test applies tensile pulling force to a material and measures the specimens response to the stress. Introduction tensile testing is one of the simplest and most widely used mechanical tests. Yield strength strength mechanics of materials engineers edge. Introductiontheory tensile testing is one of the most simple and widely used materiel tests available. Report on the results of the measurements, and calculate mean.
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