ENG1011 - Engineering Methods - S1 2025
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The following file contains data from a tensile test of a sample of acrylic sheet, from the same batch as was used to create the meccano pieces in your bridge kit.
You can download the data file here. Save the data to your computer, open it in a spreadsheet (e.g. Excel), and use the data to answer the following questions
(a) Find the ultimate tensile stress of the material MPa(b) Estimate the elastic modulus of the material GPa(c) The acrylic doesn't have a clear yield point. Instead, estimate the 0.2% proof stress of the material to give you a measure of where plastic deformation starts. MPa(d) Estimate the toughness of the material MJ/m3(e) Calculate the force that would be required to break a 20 mm diameter rod of this material NPlease answer all parts of the question.The following file contains data from a tensile test of a sample of acrylic sheet, from the same batch as was used to create the meccano pieces in your bridge kit.
You can download the data file here. Save the data to your computer, open it in a spreadsheet (e.g. Excel), and use the data to answer the following questions
(a) Find the ultimate tensile stress of the material MPa(b) Estimate the elastic modulus of the material GPa(c) The acrylic doesn't have a clear yield point. Instead, estimate the 0.2% proof stress of the material to give you a measure of where plastic deformation starts. MPa(d) Estimate the toughness of the material MJ/m3(e) Calculate the force that would be required to break a 20 mm diameter rod of this material NWhat was the difference between
- the length of the Al 6063 sample while the force in question 2(c) is being applied, and
- the length of the Al 6063 sample after the force in question 2(c) has been released?
In other words, how much did the specimen retract once the force was removed?
Give your answer in mm, to at least 2 significant figures
What was the elastic modulus for the Al 6063 sample that you determined in question 2(b)?
Give your answer in GPa, to at least two significant figures
FDM is a type of 3D printing that can be used for ...
A dislocation is ...
Which of the following are important to consider when using FDM printing to produce an object? (choose one or more answers)
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