Hey guys! I have a pretty simple MATLAB assignment here! Due Sunday at Midnight (Central Time, USA). Let me know if you need any more information!!

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Week 11 Application ActivityME219 Computer Programming for EngineersA tensile test is often used to evaluate the mechanical characteristics of different materials. A typicaltensile test involves using a machine to pull on a material specimen while measuring its tensile load (ܨ)and deformation (∆ܮ). The test continues until the specimen breaks, and the resulting load anddeformation data is converted to axial stress (ߪ) and strain (ߝ):ߪൌி஺ൌସிగௗమ(1)ߝൌ∆௅௅೚(2)where݀is the specimen’s diameter andܮ௢is its original length (called the gauge length), which are 0.25in and 3 in, respectively. In aሺߝ,ߪሻplot, many materials will exhibit the behavior shown below, wherethe stress‐strain relationship is linear at low levels of strain and nonlinear at higher levels. The linearregion represents the range of deformations at which the material will return to its original shape ifunloaded – this is often called the linear elastic region. The slope of this line is called the modulus ofelasticity (ܧ), which is a measure of the material’s stiffness.The yield point represents theሺߝ,ߪሻpoint at which the material will no longer return to its originalshape. Yield stressߪ௬௜௘௟ௗis usually defined by creating a line parallel to the linear elastic region that isoffset by 0.2 percent strain. The stress at which this offset line intersects the originalሺߝ,ߪሻplot isdefined asߪ௬௜௘௟ௗ. The ultimate tensile stress (ߪ௨௟௧) is the maximum stress experienced by the specimen,and is followed by a decrease in stress that occurs prior to breaking.In this exercise, you will use information in aሺߝ,ߪሻplot to determineܧ,ߪ௬௜௘௟ௗ, andߪ௨௟௧for 3 differentmaterials (aluminum, brass, and steel). A file corresponding to each material is provided, and includes 2columns that contain elongation and load data, respectively.

• 1495094114-aluminum.txt
• 1495094115-Week 11 Application Activity.pdf

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Status NEW Posted 18 May 2017 07:05 AM My Price 9.00

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