Ramirez_Rony_9_Material_Properties_1 copy

.docx

School

Clemson University *

*We aren’t endorsed by this school

Course

2220

Subject

Mechanical Engineering

Date

Feb 20, 2024

Type

docx

Pages

7

Uploaded by CaptainFang13324

Rony Ramirez Jr Material Properties ME 2220 Section 009 Siqi Zheng “I certify that all the writing presented here is my own and not acquired from external sources (including the student lab manual). I have cited sources appropriately and paraphrased correctly. I have not shared my writing with other students, nor have I acquired any written portion of this document from past or present students.”87 ______Rony Ramirez Jr________
1 Introduction: In engineering applications, the main focus of the Material Properties Lab is to do a tensile test. A tensile test is used to determine the material stress and strain in real-world applications to see how strong a specific material is. It also is to see how much a material can be stretched or bent until it breaks. In most engineering applications, a Shimadzu tensile testing system is used to test the material using a load cell, test fixture, an extensometer, and a control unit. The machine measures the stress strain on the material, and a set of inputs to then calculate Young’s modulus, yield strength, ultimate strength, and toughness. Obtaining all the data gives the user the ability to determine how durable the material is to be used in different productions. Experimental Methods: The lab had different days of experiments. On one day of the lab experiment, students tested a four 6061T Aluminum sample to measure the load and the extension of the specimen. To calculate the extension, students used an extensometer to obtain the data. Putting the specimen in the machine pulls the sample from both sides to measure how much it extends and the load used. Using the data gained, the students then used it to calculate Young’s modulus, yield strength, ultimate strength, and the toughness of each specimen. The second portion of the experiment was similar to the day one activity. On day two, students had two different samples, a 0/0/0/0 sample, and a 90/90/90/90 sample. The 0/0/0/0 sample had layers that laid directly on the specimen sample. In comparison, the 90/90/90/90 example had the different layers applied perpendicular to the specimen. The process has multiple layers; the first layer has had a mold with some release film liquid, the pre-impregnated carbon fiber sheets, the next layer applied is the release film, and after that film is the bleeder film last is the bleeder layer. It is then all put in a vacuum that compresses the layers together. Furthermore, the two
2 samples are then tested in the tensile test same as in the day one experiment. These tensile tests allow us to see which of the two samples will be able to handle more load. Experimental Results: Here are the first sample results for the Day one experiment. 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0 5000 10000 15000 20000 25000 30000 35000 40000 45000 50000 Sample 1: Stress-Strain Strain [-] Stress [Pa] 0 0.01 0.02 0 10000 20000 30000 40000 50000 60000 70000 80000 90000 Sample 1:Stress-Strain vs Strain-0.002 Offset Stress-Strain Strain-0.002 Offset Strain [-] Stress [Pa] / 0.002 Offset Table 1 : Material Properties Day 1 Results (Sample 1) Area 0.0490 in^2 Yield Stress 40,983 Pa
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help