Lowcarbon steel has the largest load and stress at elastic limit among all materials highcarbon steel has the largest maximum load and stress among all materials highcarbon steel has the largest failure load and nominal failure stress among all materials. Standard test method for tensile properties of plastics. The line is offset to pass through the strain axis at 0. Tensile testing and hardness testing of various metals technical report submitted to. Aug 23, 2012 this video defines various concepts related to the tensile test in detail. Conclusion we were able to successfully tensile test. Below is a snap shot of an actual tensile test being taken on a sample material. During the tensile test pieces can fly out during fracture. This is one of the most common mechanical testing techniques. 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. However, because of the high degree of sensitivity exhibited by many plastics to rate of straining and environmental conditions, data obtained by this test method cannot be considered valid for applications involving loadtime scales or environments widely different from those of this test method. Tensile test report, 20 the epco bow and stern eyes are designed for mooring boats in accordance with abtc h40. Friday, march 10th 2017 materials engineering laboratory applied physics study program faculty of science and technology sampoerna university.
The test is carried out at ambient temperature between 10cand 35 c, unless otherwise specified. Steps to check and record brinell hardness of specimen, 3. Tensile testing report tensile testing experiment 1 engr229. Complete a post test analysis on the test data and determine the following properties. Tensile data analysis comments analysis of tensile data. Materials that are sensitive to strain rates exhibit higher tensile strengths and lower elongations at faster speeds. 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. 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 objective of this experiment is to investigate the behavior of two material specimens under a tensile test. Standard test methods for tension testing of metallic materials1. Report in your laboratory reports must have the followings. E equation 1 where p is the load in newtons force read from the loaddisp. The test unit will be introduced in the laboratory before the experiment by the relevant assistant. It is very important to the tensile test to be considered is the standard dimensions and profiles are adhered to.
The software required to run the uniaxial tests will be loaded and ready to go when you get to the. Tensile testing of metals objective the tensile test measures the resistance of a material to a static or slowly applied force. The rate at which a test is performed can have a significant effect on tensile properties. Tensile testing of steel see web for typical report format including. The uniaxial tension test is one of the most widely used tests to measure the mechanical properties of materials. The basics on the operation of universal testing machine were also learnt during this experiment. Strength can have many meanings, so let us take a closer look at what is meant by the strength of a material. Tensile data analysis the tensile example document presents a method to generate a stressstrain curve from test data.
Tensile testing is a destructive test process that provides information about the tensile strength, yield strength, and ductility of the metallic material. Tensile data analysis 3 the common method is to construct a line parallel to the modulus line. The material has known dimensions, like length and crosssectional area. After testing one sample of each material, a second round of tensile tests were performed on both. Tensile test lab report yield engineering deformation. Mar 20, 2018 lab report engineering materials lab tensile test 1. Two concrete test machine are available for use in fsel. 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. Tensile testing, also known as tension testing, is a destructive engineering and materials science test whereby controlled tension is applied to a sample either as a load for proof testing or until it fully fails this is one of the most common mechanical testing techniques. Tensile testing, also known as tension testing, is a destructive engineering and materials science test whereby controlled tension is applied to a sample either as a load for proof testing or until it fully fails. 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. Report on the results of the measurements, and calculate mean and standard deviations of the properties. Both the load stress and the test piece extension strain are measured and from this data an engineering stressstrain curve is constructed, fig. Example long laboratory report mechanical properties.
Standard test method for tensile properties of plastics1 this standard is issued under the. Tensile testing is described, covering test specimen form, determination of the engineering stressstrain curve, and derivation of test results. Friday, march 10th 2017 materials engineering laboratory applied physics study program faculty of science and technology sampoerna university 2017. View lab report tensile testing report from engr 229 at american university in cairo. Abstract a tensile test was conducted on an instron tensile machine using a 316 inch copper rod. The main principle of the tensile test is denotes the resistance of a material to a tensile load applied axially to a specimen. Detailed steps required to check ultimate tensile strength using universal testing machine of any specimen, 2. The material test curves have a region where the deformation caused by the stress is elastic, or not permanent. Tensile test method for the determining of the structural properties of individual carbon fibers carlton metcalfdoetsch honors mentor. The important part of the specimen is the gage section.
Youngs modulus, poissons ratio, yield strength, and strainhardening characteristics. The universal testing machine can be used to determine the tensile strengths of. Our tensile testing labs utilize stateoftheart digital instrumentation to report the ultimate tensile strength, maximum elongation, and reduction of the area of a material. By doing this, tensile tests determine how strong a material is and how much it can elongate. Tensile testing report tensile testing experiment 1. The materials to be investigated are copper and steel. A completed worksheet, steel6150tens is in the help folder. Lab report engineering materials lab tensile test 1. Mechanical and physical testing of biocomposites, fibrereinforced composites and hybrid composites, 2019. 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. Concepts the linear relationship is hookes law that represents elastic deformation. A tensile test, also known as a tension test, is one of the most fundamental and common types of mechanical testing.
It is used to find out how strong a material is and also how much it can be stretched before it breaks. Using the testworks software in simulator mode, run a tension test and collect loadextension data for the acetalspecimen. Standard test method for tensile properties of plastics1. 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. Rockwell b test brinell 10500 hardness test average 99. Tensile test purpose, graph, results, specimen details. Tensile testing and hardness testing of various metals. Lab report requirements general the following suggestions should be helpful. Consider the typical tensile specimen shown in fig. Standard test method for tensile properties of adhesive. Brief comments on differences and similarities in each property for the set of materials from the tables above it can be seen that.
Strain tensile brass trial 1 brass trial 2 aluminum copper steel trial 1 steel trial 2. 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. Object the purpose of this experiment is to understand the uniaxial tensile testing and provide knowledge of the application of the tensile test machine. From performing the tensile test the following properties will be determined. Using data acquired stress and strain was calculated and plotted on excel to analyze stress strain curve. Introduction tensile testing is one of the simplest and most widely used mechanical tests. Steel was also able to resist larger stresses corresponding to larger loads compared to the other two test. Introduction a tension test is probably the most fundamental type of mechanical test.
Uniaxial tension and compression testing of materials. Strength and testing of materials engr211204 uploaded by. Tensile test purpose, graph, results, specimen detail. Report on the results of the measurements, and calculate mean. We then begin to apply weight to the material gripped at one end while the other end is fixed. For help with reading taking values of of a stressstrain curve, see this video a. Abstract this experiment was conducted so as compare the mechanical properties of aluminium and mild steel. This visual representation helps to guide the determination of material properties for design. Example long laboratory report mechanical properties of 1018. It is important that all the information necessary to complete the lab report is obtained before students leave the lab. This means when the stress is removed the specimen returns to its original length. E, 1 mpa 106 pa engineering strain is the change in length of the. Tensile test experiment materials science and engineering.
Using the instron series ix software, the forcedisplacement responses of each of the material at a displacement rate of 15 mmmin were acquired. 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. This video defines various concepts related to the tensile test in detail. For me lab i, you will usually report your values as mean. However, a typical format for a lab report is included below. 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. Abstract tensile test method for the determining of the. The concepts of stress and strain are essential to understanding the results of the test. The tensile test data are characterized by terminology shown in figure 41. Do not remove specimens from abrasive cutoff machine until. One material property that is widely used and recognized is the strength of a material.
Standard test method for tensile properties of adhesive bonds1. The intersection of this line with the stressstrain curve is defined as the yield point. The basic idea of a tensile test is to place a sample of a material between two fixtures called grips which clamp the material. A number in parentheses indicates the year of last reapproval. From these measurements, we can determine the following properties. Standard test methods for tension testing of metallic. A tensile test applies tensile pulling force to a material and measures the specimens response to the stress. 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. Tensile properties for plastics, polymers and steels are very sensitive to testing rates, but aluminum alloys exhibit little sensitivity.
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