lap report 2

Lap report 2 - CE 350-1 March 6,2008 Compression Experiment Andy Bennett EI CE 350 Section 1 Table of Contest CE 350-2 Section Page number Abstract

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CE 350 - 1 - March 6,2008 Compression Experiment Andy Bennett, EI CE 350 Section # 1
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CE 350 - 2 - Table of Contest Section Page number Abstract 3 Introduction 3 List of Materials 5 Procedure 5 Results 7 Discussion 11 Conclusion 13 References 14
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CE 350 - 3 - Abstract This report is performed to analyze the experiment of compression test. This test is performed to know the properties of different materials to use them safely in the environment according to their mechanical properties. The specimens that were used in this experiment are concrete, oak with grain, and oak against grain. In order to test these specimens, the initial measurements of each specimen including length and diameter were measured by using caliber and c ompressometer. Then, the wood specimens separately were placed in the testing machine to be tested. This machine was connected to controller and to computer. The computer was recording the data while the specimen was tested. Also, the concrete was placed in the compression test machine and the data was recorded. From these data, many important things can be obtained including the stress and the strain. Since the stress and the strain were obtained, the diagram of stress- strain can be plotted. The most important results can be obtained from the plot like the proportional point, yield stress, ultimate stress, fracture stress, the modulus of elasticity, and modulus of resilience. After all these obtained, it can be noted that the concrete is the most stiffness specimen because it has the highest modulus of elasticity. That can explain why the concrete is commonly used today in many different applications like buildings and bridges. The percent errors in values varied from one value to another but in usual the most values were acceptable. Introduction The report covers a very important experiment in the engineering
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CE 350 - 4 - community. In this experiment, there is a test called the compression test. This test is performed on two different materials which are concrete and wood. The concrete is tested by the compression testing machine. The both kind of wood including against the grain and with the grin are tested by Baldwin testing machine.The compression test usually is performed to get many mechanical properties of the material that is being tested. Many important things can be determined from this test like the relationship between the average normal stress and the average normal strain. The stress – strain diagram can be obtained from this experiment. Since the diagram is found, many properties can be found. These properties include proportional limit, yield point, ultimate strength, and fracture strength, modulus of elasticity, and modulus of resilience. From these properties, many values can be obtained and these values can indicate many important points about the material tested. For example, a specimen under compression test can return back to its original shape unless it exceeds the proportional point or the elastic region. Also, a
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This note was uploaded on 06/16/2008 for the course CE 350 taught by Professor Butson during the Spring '08 term at SIU Carbondale.

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Lap report 2 - CE 350-1 March 6,2008 Compression Experiment Andy Bennett EI CE 350 Section 1 Table of Contest CE 350-2 Section Page number Abstract

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