Experiment on Properties of Materials Essay Sample
- Pages: 3
- Word count: 632
- Rewriting Possibility: 99% (excellent)
- Category: experiment
Get Full Essay
Get access to this section to get all help you need with your essay and educational issues.Get Access
Introduction of TOPIC
To calculate a range of different properties (steel, aluminium alloy, pure aluminium. PMMA, timber and nylon) and measure deflection at failure, energy stored at failure and the young modulus for each of the respective materials.
Materials and methods
Materials used to conduct the experiment were deflection rig, two weight hangers ,material rods(steel aluminium alloy pure aluminium PMMA, timber ,nylon)varying weights, ruler , electronic vernier calliper. Method
Before the experiment was conducted ,protective goggles was worn to ensure eyes are protected from fragments of flying materials that are likely to come about as a result of breaking the rods. After inspection of the apparatus the venier callipers was closed and turned to record in millimetres. The steel rod was placed into the nylon collect and tightened .measurement of 200 mm was taken from nylon collet and weight hanger is placed on the steel rod then locked afterwards. Venier is lowered until it comes into contact with the steel rod and the reset to read to read 0.00mm on the display. Weight of 1 kg was placed on the hanger and the venier lowered until it touches the top of rod. The deflection is then recorded, and placed in a table as in fig 1; theoretical deflection of just the steel rod, collet deflection and collet deflection per kilogram and average collet deflection is calculated for the steel rod
le="text-align: justify;">The rest of the materials are tested in the order of aluminium alloy, pure
From the results it can be concluded that steel has got the highest young modulus among the materials tested .steels high modulus makes it have large strength hence its suitability for large structures such as high rising buildings, bridges, oil rigs etc. The stiffness of steel as a property enables it to resist bending; steels tensile strength makes it withstand large weights Aluminium alloy also depicts a large young modulus as compared to the others and larger strength, with low tensile strength .Aluminium alloy can also be used in building due to this reason. Aluminium alloy was also detected to have a greater yield than aluminium and the rest of the materials with the exception of steel. Energy stored at failure and deflection failure or steel could not be determined because, failure was not reached in that particular material.
Young modulus for steel is 2.07×10^5
Experiment was performed under room temperature
Weight used in the experiment is accurately calibrated and correct weight displayed on the weight Further assumptions was that the young modulus for all the materials can be measured by gradient of the force /deflection of the material divided by the gradient of the force deflection of steel multiplied by 2.07×105 .
Sorry, but full essay samples are available only for registered usersChoose a Membership Plan