# materials Engineering lab report , completing table , graph , and answering some question

I want you to do the calculation, and I will send you an example of another graph. you should have 4 graphs , graph for every material( Aluminum,Steel,composite,Nylon66) . Use the data from the Dimensions file, and do table 5. use Excal and World.
lab_module_two___tensile_testing___data_sheet.docx

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Lab Module Two:
Tensile Testing & Stress/Strain Plots
Data Sheet
Name: (delete the italicized notes prior to submitting your work to D2L)
MATLENG-201, Lab Section: 8??
Date:
SUMMARY:
A paragraph or two detailing what was done, the main outcome, and why it was important. Ideas /
suggestions: relate the lab to concepts from class; discuss the main fundamental relationship(s) involved
in the lab activity; discuss the reason why the concepts from the lab activity are important for some
application; do not include your graphs in this section (those go at the end), but reference them as
necessary.
DATA AND RESULTS
1. Your TA has uploaded the load versus displacement data and geometries of the samples from the
tensile lab to D2L. Using this information, graph the engineering stress-strain curve for each
material. Please note that all graphs should be in metric units. Please insert the graphs at the
end using additional pages as necessary.
2. Fill out the table below with the help of equations from the lab manual or your textbook, the
graphs you generated in step 1 above and information given to you in lab and lecture.
E
sy
sUTS
sf
Ductility
?%
RA%
Aluminum
Steel
Nylon
Composite
a. Is the fracture surface of the steel and aluminum samples the same or different? Why?
b. Why are tensile tests performed with simple cross-sections even through actual
engineering parts often have complex geometries?
c. Is there a better what to measure the elastic modulus of a material such as a metal alloy
that uses different instruments or measurement techniques than what was used in lab?
Argue your position and provide evidence.
d. What is special about the ratio of strength to density?
e. What safety factors are often used in engineering calculations but are not used when
measuring material properties? Why?
f.
What are some reasons why a value you measure in lab would be different than a value
from a reference source? Discuss several potential reasons. (Hint: remember the
Edupack lab)
GRAPHS: (insert graphs made from Excel or another graphing program at the end of this summary sheet.
Ensure figures are identified properly using accurate and complete figure legends)

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