The linear region of the stress-strain curves

We originally started out with eight samples of 5052 dogbone shaped aluminum. Five of the samples had to be excluded from analysis because of experimental conditions. These five samples were unable to stay in place because of the Instron grips. To combat this, we placed a piece of sandpaper on the bottom grip to increase the friction. We also switched the round grips for a set of grips that could be tightened with a wrench instead of vice grips. Since we had to change our grips in the middle of testing, the data may not be consistent.

The load over time graphs appear relatively similar. This shows that the metal is consistent. In the graphs, the curves were not perfectly smooth, there is an occasional noise that appears. This was due to the dogbone aluminum pieces slipping out of the Instron grips.

Don't use plagiarized sources. Get Your Custom Essay on
The linear region of the stress-strain curves
Just from $10/Page
Order Essay

The maximum load had an average of 122.308 pounds with a standard deviation of 2.81094 pounds. The high standard deviation most likely stems from having to switch the Instron grips during the experimental testing.

The ultimate strength was calculated by dividing the maximum load by the cross sectional area prior to testing. The average ultimate strength was 30627.8 pounds per square inch. The 95% confidence interval was calculated to be (30626.4 to 30629.4 psi). The literature value for ultimate strength2 was found to be 33,000 psi. Since the literature value does not fall within our confidence interval, our experimental value is significantly different. This most likely stems from imprecise measurements of cross sectional area or inconsistencies in the Instron grips throughout the testing.

The Young’s modulus was calculated by finding the stress and strain of the elastic regions and calculating the slope. The slope can be used for the Young’s modulus because we are only investigating the linear region of the stress-strain curves. Our average Young’s modulus was calculated to be 329477 pounds per square inch. The 95% confidence interval was calculated to be (310822, 348131). The Young’s modulus of Aluminum 5052 was reported to be 10,200 pounds per square inch based off of our literature value1. This value is significantly different from the literature value. This could stem from incorrect substitution in our calculations. When calculating stress we used the force divided by the original cross sectional area, it may have been better to use the final cross sectional area.

The average cross sectional area for a 50 pound breakaway force was calculated to be 0.00230107 square inches. This is probably relatively small given our average Young’s modulus was so high compared to the literature value. The cross sectional area does make sense with our data because it is less than the original cross sectional area and greater than the cross sectional area after breaking.

Get professional assignment help cheaply

Are you busy and do not have time to handle your assignment? Are you scared that your paper will not make the grade? Do you have responsibilities that may hinder you from turning in your assignment on time? Are you tired and can barely handle your assignment? Are your grades inconsistent?

Whichever your reason may is, it is valid! You can get professional academic help from our service at affordable rates. We have a team of professional academic writers who can handle all your assignments.

Our essay writers are graduates with diplomas, bachelor, masters, Ph.D., and doctorate degrees in various subjects. The minimum requirement to be an essay writer with our essay writing service is to have a college diploma. When assigning your order, we match the paper subject with the area of specialization of the writer.

Why choose our academic writing service?

  • Plagiarism free papers
  • Timely delivery
  • Any deadline
  • Skilled, Experienced Native English Writers
  • Subject-relevant academic writer
  • Adherence to paper instructions
  • Ability to tackle bulk assignments
  • Reasonable prices
  • 24/7 Customer Support
  • Get superb grades consistently

 

Order a unique copy of this paper
(550 words)

Approximate price: $22

Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

We value our customers and so we ensure that what we do is 100% original..
With us you are guaranteed of quality work done by our qualified experts.Your information and everything that you do with us is kept completely confidential.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

The Product ordered is guaranteed to be original. Orders are checked by the most advanced anti-plagiarism software in the market to assure that the Product is 100% original. The Company has a zero tolerance policy for plagiarism.

Read more

Free-revision policy

The Free Revision policy is a courtesy service that the Company provides to help ensure Customer’s total satisfaction with the completed Order. To receive free revision the Company requires that the Customer provide the request within fourteen (14) days from the first completion date and within a period of thirty (30) days for dissertations.

Read more

Privacy policy

The Company is committed to protect the privacy of the Customer and it will never resell or share any of Customer’s personal information, including credit card data, with any third party. All the online transactions are processed through the secure and reliable online payment systems.

Read more

Fair-cooperation guarantee

By placing an order with us, you agree to the service we provide. We will endear to do all that it takes to deliver a comprehensive paper as per your requirements. We also count on your cooperation to ensure that we deliver on this mandate.

Read more

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Open chat
1
You can contact our live agent via WhatsApp! Via +1 817 953 0426

Feel free to ask questions, clarifications, or discounts available when placing an order.

Order your essay today and save 20% with the discount code VICTORY