Lab 02 Report - Data Analysis and Plotting with Excel

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University of Wisconsin, Madison *

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307

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Mechanical Engineering

Date

Feb 20, 2024

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docx

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2

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Name: ME / EMA Lab 02 Data Analysis and Plotting with Excel Date: Purpose: Provide a brief statement regarding the purpose of the lab [Start here] Stress (MPa) vs. Strain (mm/mm) Plots : Create plots of stress vs. [extensometer] strain showing the strain just before the extensometer was removed. Use these plots to estimate the yield strength . Each plot should have properly sized axis labels showing units for stress (MPa) and strain (mm/mm). Data should be plotted (scatter plots) with markers only and NO LINES . The plots should have NO TITLE and be descriptively captioned below each plot. Include gridlines on the plots. These plots will not have a legend. [Start here] Stress (MPa) vs. Strain (mm/mm) Plots – Linear Region: Create plots of stress vs. [extensometer] strain showing the linear region for each set of sample data. Use these plots to determine the elastic modulus for each material . For each plot, truncate the data to show only the linear region. Add a trendline showing the linear fit and equation of the linear fit. Each plot should have properly sized axis labels showing units for stress (MPa) and strain (mm/mm). Data should be plotted (scatter plots) with markers only and NO LINES . The plots should have NO TITLE and be descriptively captioned below each plot. Include gridlines on the plots. Add a legend to each plot located in the lower right- hand corner. [Start here] Stress (MPa) vs. Strain (mm/mm) Plot – Entire Data Sets: Create a single plot of stress vs. strain showing both sets of data on a single plot. The strain should be calculated from crosshead displacement and the sample gauge length (2.25-in). Use this plot to determine the Ultimate Tensile Strength (UTS). The plot should have properly sized axis labels showing units for stress (MPa) and strain (mm/mm). Data should be plotted (scatter plots) with markers only and NO LINES. Each data set should have a different marker type. The plot should have NO TITLE and be descriptively captioned below each plot. Include gridlines on the plot. Add a legend to the plot located in the lower right hand corner. [Start here]
Equations: Show equations used for calculating the cross-sectional area, stress, and strain. Number each equation to the right of the equation. Below each equation, provide a description of each variable (nomenclature) with units consistent with the equations. Do not duplicate descriptions. [Start here] Elastic Modulus, Yield Strength, Ultimate Tensile Strength: Create a table showing the elastic modulus, yield strength, and ultimate tensile strength (columns) for each material (rows). Center the table and add a left-justified caption above the table with a description. Round numerical values to be consistent with measurement precision and make sure significant figures (decimal places) are consistent. Numerical values should be centered. Column titles should be bold font and should show units for numerical values. [Start here] Commentary: Describe how the values of yield strength, and ultimate tensile strength compare to the values provided by the supplier for A1008 carbon steel and 5052-H32 aluminum. What are some sources of error? [Start here]
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