A standard dimension bar of the material under test is clamped at each end. Tensile tests are used to determine how materials will behave under tension load. Way more information than you ever wanted on how to fell a tree. These accessories can be made compatible by testresources to match test machines supplied by other manufacturers. In 1980 hounsfield test equipment limited was registered as a testing machine company. The latter soon appreciate the ingenuity and brilliant simplicity of its design, and from the college point of view there is the low initial cost of the machine, the wide range of attachments for various tensile, shear, brinell and slow bend tests etc. Mar 24, 2014 hte hounsfield tensile testing machine bongard2012. The tensometer monsanto, swindon, england tensile testing complex systems are available for determining absolute linear machine is used to obtain. A range of frequencies is compared, and the one that most closely matches the response of your strings is selected.
The testing procedure was repeated for the rest of the specimens. The basics on the operation of universal testing machine were also learnt during this experiment. Viewing by appointment only at ncm auctions, sandall house, unit 1 sandall drive, kick sandall industrial estate, doncaster. A universal testing machine utm, also known as a universal tester, materials testing machine or materials test frame, is used to test the tensile strength and compressive strength of materials. The basic concept is to grip the material between two holders e. Single column tensile tester german manufactured aml. The force to achieve this is recorded and knowing the crosssectional area of the test piece the tensile strength is calculated. Impact resistance test was performed in accordance to astm d4812. Uqx bioimg101x biomedical imaging recommended for you. They have similar uses but very different properties. The universal testing machine can be used to determine the tensile strengths of. To perform tensile test on universal testing machine utm having capacity 300kn.
A simple tensile test determines only one set of properties of a material, at a specific temperature, and a specific strain rate. Nov 12, 2006 the tensometer does this electronically. Principles of hardness testing comparison of different hardness techniques lab2 3. Monsanto tensometer tensile tester are available as part of a testresources product line of test machine accessories that include a wide range of test fixtures, high low temperature chambers, furnaces, tensile grips, and extensometers. We then begin to apply weight to the material gripped at one end while the other end is fixed. The universal part of the name reflects that it can perform many standard tensile and.
A tensile test, also known as a tension test, is one of the most fundamental and common types of mechanical testing. The use of an l vdt for load measurement permits the elimination of the mercury indication system of the tensometer. If you are looking for a hounsfield universal test machine then you should consider a universal test machine from testresources. A wide variety of hounsfield tensile test options are available to you, such as tensile testing machine, universal testing machine. A tensile test applies tensile pulling force to a material and measures the specimens response to the stress.
The strain rate for the test is programmed into the machine, after which the test may begin. Tensile test results showed that alkalitreated fiber composites increased in fracture strain twice to three times more than untreated fiber composites, without a considerable decrease in strength. The fracture load for each sample was noted as well as the diameter at the point of fracture and the final gauge length. The tensile tests were performed on various tensile samples using monsanto tensometer.
Testing machine, creep testing machine, hounsfield tensometer. The test specimen was secured firmly between the gaps of the tensometer which was loaded me chanically until it was stressed to fracture. It is useful for stress strain measurements and tensile tests. There have been several models of the tensometer with each one designed for a different purpose. Monsanto tensometer tensile tester test machines, grips. Determination of the tensile properties of different class of materials lab1 2. There are many different types of tests available but the most common is the tensile. Hounsfield tensile test, hounsfield tensile test suppliers. Physicomechanical responses of polypropylenecaco3 composite. Tensile test experiment materials science and engineering. The material has known dimensions, like length and crosssectional area. The extension of the material is read out on a dial or chart, so plots extension versus force stress versus strain. This was followed by a series of innovative designs, which drove the company forward.
The photograph below is of the hounsfield h20kw apparatus, which was used to perform the experiment. Pdf determination of mechanical properties from stressstrain. In this lab we are measuring the uts ultimate tensile strength. In order to discover the various properties of a material we must carry out material tests. Impact testing of materials charpy impact test lab2 4. It was invented by charles huston who described it in an article in the journal of the. It involves using a small sample with a fixed crosssectional area and then pulling it with a tensometer at a constant strain rate until the sample breaks. Tensometer for sale in uk 23 secondhand tensometers.
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. Click on image to view larger version first the sample is secured in place. The hounsfield tester the hounsfield tester can do a variety of tests on a small test piece. Tensometer definition of tensometer by medical dictionary. Doitpoms tlp library crystallinity in polymers tensile. Tensometer article about tensometer by the free dictionary.
This tried and tested piece of equipment used by universities across the world allows users to perform tensile tests up to 20kn on specimens made of different metals to understand material characteristics such as upper and lower yield strengths. This is the highest stress a material can take before it breaks. Tinius olsen offers solutions for testing the strength and performance of plastics, metals, composites and many other materials through tensile, flexural, compression, folding endurance, impact, heat distortion, vicat, melt flow, tear and puncture tests. Abstract this experiment was conducted so as compare the mechanical properties of aluminium and mild steel. An earlier name for a tensile testing machine is a tensometer. Not to be confused with tensiometer, tensometer, or tension meter. A typical instron load frame used for tensile testing. The hounsfield can often produce results which are largely different from what may have been expected from published data. The basic idea of a tensile test is to place a sample of a material between two fixtures called grips which clamp the material.
Force,fn elongation, dl m plastic deformation elastic deformation the tensile test 8. What are the advantages and disadvantages of a tensile test. Theory behind tensile testing tensile test lab tomos st john 7. Monsanto tensometer tensile tester testresources, inc.
Nov 18, 2015 hounsfield tensile material testing machine. Hounsfield and testresources are comparable when it comes to performing uniaxial tensile, compression, cyclic, shear, flexure, bend, peel, tear and material characteristics tests such as elongation and modulus. The use of this approach for tensile test data analysis, as an instruction. A reduced gage section specimen made from 6061t6 aluminum, ready for tensile testing. The placing of the material in tension identifies the youngs modulus of the material. Lab report 8 lab report lab session 8 to study tensile strength of. Mm1 ultimate tensile strength deformation engineering scribd. For each species, single root specimens were sampled and tested for tensile tests in the laboratory using the hounsfield tensometer apparatus. Aug 02, 2014 a tensometer is often part of a universal testing machine. What are the merits of the hounsfield tensometer answers. Materials testing lab is actively contributing in teaching and research activities in the. Typical tensile testing machines are shown in figures lea.
The hounsfield tensometer is a very popular machine amongst technical college staff and students alike. Recorder chart drive through a pulse generator allows direct load displacement recording. By doing this, tensile tests determine how strong a material is and how much it can elongate. Tensometer tensile testing education kit by monsan. The highest point in the stressstrain curve refer to the graph given above is the ultimate tensile strength. Alibaba offers 1,2 hounsfield tensile testing machine suppliers, and hounsfield tensile testing machine manufacturers, distributors, factories, companies. Too good to scrap so offers to cover postage and hopefully a bit more would be good. A smallscale machine that fits on a benchtop and allows simple tensile tests of metal specimens up to a maximum load of 20 kn. The hounsfield tester can do a variety of tests on a small test piece. The tensometer converts this selected frequency to a value that is displayed for you to see. Jul 05, 20 instrumentation instron tests more expensive than the hounsfield greater accuracy not used in lab because of expense. Journal of civil engineering research and practice, vol. Lab report 8 lab report lab session 8 to study tensile. An extensometer is a device that is used to measure changes in the length of an object.