• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Statics - Tensile Test

Extracts from this document...


Statics - Tensile Test Aim & Objectives The aim and objective of this test is to observe and investigate the way in which materials respond to stress. In the practical lesson we will be using three types of metal (Sample A; B; C) All three will be tested on their strength of tension and using the data that we recover we will be able to judge the name of the metal. The metal that breaks first will have a lower breaking point making it a brittle metal; however, the more withstanding metal will be more ductile. Introduction The Tensile test involves stretching a material to a point where it fails, or breaks. This method of testing is essential to many engineering applications because it judges the ability of the metal to perform in various situations like buildings, ships or engines. Testing the tensile strength of a material involves placing it into a tensile machine that has special jaws that clamp the metal. ...read more.


After measuring the inner length, we find the outer length. These measurements will come in handy because the computer will automatically calculate them into cross-sectional area, which is needed for some formulae. When all the important measurements have been carried out the test piece must be clamped into the tensile testing machine. The testing machine is a high... Once everything is in place, a small load is pressed against the specimen to keep it tightly in place. Whilst the material is tightly clamped, we fit in the extensometer. The extensometer is a mechanical device that is fitted onto the metal, parallel to its total length. Whilst a tensile stress testing is taking place the distance increase between the points that you clamped the meter, the increase is very accurate and gets stored on the computer, the machine does the same job as the extensometer however, it is less accurate. ...read more.


to finally achieve a set of results. Therefore I can confirm that Sample A is the most effective metal to use in real-world applications that require a lot of resistance towards stress. This can include agile structures, planes, ships. Sample B is ideal for typical structures such as multi-storey buildings. Lastly, Sample C is rarely used for high resistance demanding structures because iron is used to make steel, therefore it can be used for minor jobs. Additional notes Fig 1.1 Shows the diagram of the specimen and indicates the positions at which you must measure Fig 1.2 Is a photograph of the two tools that we used to collect the raw data Fig 1.3 Shows the tensile stress testing machine Bibligraphy http://en.wikipedia.org/wiki/Tensile_strength http://campusmoodle.rgu.ac.uk/mod/resource/view.php?id=1393013 (Group B Thursday 22 Oct 3.00 Sample A - C) http://outreach.materials.ox.ac.uk/LearningResources/downloads/Tensile%20Test%20Worksheet.doc http://books.google.co.uk/books?id=TO9dSoi0P6gC&pg=PA458&lpg=PA458&dq=metal+with+young#v=onepage&q=&f=false (Tensile Testing) Appendices Tensile Test Lab Results Tensile Test - Lab Report (Handout used as a guide for our coursework, small format diagrams listed below) ?? ?? ?? ?? ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our University Degree Engineering section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related University Degree Engineering essays

  1. Tensile test report.

    The tensile strength is described as the stress which is obtained at the highest applied force. This is usually the point at which the necking begins in ductile materials. Tensile strength = Force / cross - sectional area The breaking strength or ultimate tensile strength is the stress required to break a material.

  2. Coefficient of Linear Expansion of a Metal

    10s 100 0.73 100 0.9 100 0.725 100 0.96 6min 20s 100 0.73 100 0.9 100 0.71 100 0.96 6min 30s 100 0.73 100 0.9 100 0.71 100 0.965 6min 40s 100 0.73 100 0.9 100 0.71 100 0.965 6min 50s 100 0.73 100 0.9 100 0.71 100 0.965 7min

  1. The aim of this laboratory experiment is to examine the tensile strength of three ...

    This means that the experiment was successful and the calculation were correct. Although, there's always a small percentage error in every experiment. The most common error in every experiment is the human error and this is the main type of error that may took place in this experiment.

  2. Pulling things appart - The following experiment was designed to determine some of the ...

    Therefore, no meaningful value for the yield strength of the black polymer material could be obtained. Nonetheless, we have taken the tensile strength, the point at which the black polymer material fractured, to be equal to its yield strength. The largest source of uncertainty in making measurements of yield strength

  1. Thermofluid Mechanics and Mechanical Design lab report

    14 12.7 26.7 0.456 41.88 143.17 3.42 3 60 14.6 12.5 27.1 0.451 62.82 143.76 2.29 4 50 15.2 12.4 27.6 0.447 83.76 145.27 1.73 5 40 15.6 12.3 27.9 0.444 104.7 145.80 1.39 6 30 15.9 12.2 28.1 0.441 125.64 146.02 1.16 7 20 16.2 12.2 28.4 0.440 146.58

  2. Three basic types of materials were used in the experiment. They were a) mild ...

    It corresponds to the onset of plastic deformation. In brittle materials and plastics, the point where the materials move away from linearly is often hard to define. In a brief, at this point, the deformation is purely plastic. C - 0.1% Proof Stress A third point is sometimes used to describe the yield stress of the material.

  1. tensile test

    B - Yield Stress The stress at which yielding occurs across the whole specimen. That is, this is the point where the materials' deformation is no longer linear, i.e. no longer obeys Hooke's Law. It corresponds to the onset of plastic deformation.

  2. Steel Reinforcement Tension Test

    800 800 800 800 Mass (kg) 1.9917 1.9917 1.9176 1.9367 (1) Nominal Area A=M / 0.00785L (mm2) where M is the mass of the bar in kg and L is the bar in meter. Nominal Area of bar A= 1.9917/0.00785x0.8 = 317.15mm2 Nominal Area of bar B= 1.9917/0.00785x0.8 = 317.15mm2

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work