Sample Lab Abstract 2

.docx

School

Texas A&M University *

*We aren’t endorsed by this school

Course

260

Subject

Mechanical Engineering

Date

Apr 3, 2024

Type

docx

Pages

2

Uploaded by CommodoreMosquitoMaster518

Report
Maria Ruiz Pancorvo 531000387 Title: Mechanical Tolerance Analysis and Uncertainty Analysis Name: Sample Lab Abstract 2 Affiliation: J. Mike Walker ’66 Department of Mechanical Engineering Texas A&M University, College Station, TX, USA Abstract The objective of this experiment was to calculate the tolerance and associated uncertainty of a deep-groove ball bearing. A bearing eliminates the translation of a shaft while allowing for rotation. The tolerance is an established range for dimension for given products, while uncertainty relates to the estimated amount of error from a measurement process. There is a need to ensure that the dimensions of the bearing are within the calculated tolerance because they must allow for fitting with other products. Using digital calipers, I measured the inner and outer diameter (mm) at various locations around the bearing circumference. T he measurements obtained provided an error distribution at 30-degree and 60-degree intervals. Next, the data was used to calculate the mean and standard deviation for each measurement set. I determined the tolerance using statistical analysis. Finally, I compared the calculated tolerance with the manufacturer's specifications (mm) for the bearing. The results were that both inner and outer diameters were within the manufacturer’s specified tolerance, including the uncertainty of the measured values. Furthermore, the results indicate that the experiment is repeatable as the standard deviation was similar for all data sets. In conclusion, while every measurement might not be the true value as long as it stays within the required tolerance the ball bearing will work. Keywords: Tolerance; Uncertainty; Ball bearing; Digital calipers
Maria Ruiz Pancorvo 531000387 SECTION COMMENTS: 1. Format The format includes every element and effectively improves the readability of the document. 2. Objective Statement The objective statement is concise and thorough. By reading it, the reader knows what the lab is looking to accomplish. 3. General Background The general background provided gave sufficient information to someone that does not know about the topic to be able to understand what the experiment was about. Key terms such as bearing, tolerance and uncertainty were properly defined. 4. Knowledge Gap or Need The need statement answered why the experiment was important and why it is necessary to understand what is being studied. It was also concise and thorough. 5. Experimental Method The experimental method was explained in enough detail and used all of the keywords. It explained how the measurements were taken and the equipment, as well as some statistical tools. 6. Experimental Results Although the experimental results did not include quantitative results, they were explained qualitatively. Again, keywords such as uncertainty and tolerance were used. 7. Implications of Results The implications of the results and the overall conclusion of the experiment were clearly stated. 8. Future Work The recommendations for future work did not identify possible areas of improvement in the experiment.
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