3501-metals-lab-2006

3501-metals-lab-2006 - CGN3501 Civil Engineering Material...

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CGN3501 Civil Engineering Material Lab Metal Testing Lab Laboratory Exercise #4 Metal Testing PURPOSE: The purpose of this laboratory is to give students experience in measuring various strength parameters of different metals. MATERIALS AND LABORATORY PROCEDURES Metals to be tested The following metals are to be tested: Metal Color Code/shape Composition 1. 1045 Cold Rolled Steel Æ red/white 0.45% Carbon 2. 2024-T351 Aluminum Æ red 3. Grey Cast Iron Æ copper 4. 1018 Cold Rolled Steel Æ large block 0.18% Carbon Tests to be performed 1. Longitudinal Round Tensile Test (ASTM E8) to be performed on: (1) 1045 Cold Rolled Steel (2) 2024-T351 Aluminum (3) Grey Cast Iron 2. Charpy Impact Test (ASTM E23) to be performed on: (1) 1045 Cold Rolled Steel (2) 2024-T351 Aluminum (3) Grey Cast Iron 3. Rockwell “B” Hardness Test (ASTM E18) to be performed on: (1) 1045 Cold Rolled Steel (2) 2024-T351 Aluminum (3) Grey Cast Iron (4) 1018 Cold Rolled Steel (large block) 4. Rockwell “C” Hardness Test (ASTM E18) to be performed on: (1) 1045 Cold Rolled Steel 5. Brinell Hardness Test (ASTM E-10) to be performed on: (1) 1018 Cold Rolled Steel (large block) University of Florida – Department of Civil and Coastal Engineering 1
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CGN3501 Civil Engineering Material Lab Metal Testing Lab Procedures for Tension Test For each metal specimen, do the following: 1. Using a micrometer, measure and record the diameter of the test specimen at its center. 2. Mark two gage points 2 inches apart on the specimen with a special indenter. Measure the exact distance between the two gage points with a micrometer. Attach a 2-inch extensometer to the specimen at the two gage points. 3. Place the specimen in the threaded grips and load the specimen slowly to failure. Since load and deflection are measured by the computer, you do not need to record any data. In the computer program enter the diameter and the identification of the sample and run the test. 4. Remove the extensometer from the specimen as indicated for the computer program. 5. After the specimen has been broken, place the two broken pieces together by hand, and measure the distance between the two gage points by means of a micrometer to determine the total plastic deformation. Measure also the diameter of the reduced cross-section of the fractured specimen. 6. Sketch the fractured specimen.
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This note was uploaded on 05/26/2011 for the course CGN 3501 taught by Professor Mang during the Fall '10 term at University of Florida.

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3501-metals-lab-2006 - CGN3501 Civil Engineering Material...

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