User:Risingphoenix19/ENES-100/project 2

My Instructor's course page which points to this.

Project Preference
''Your class was given a list of projects to choose from. Please list the three projects you want to work on, from highest to lowest.''

Problem Statement
''In one or two sentences, describe the project that your group will be working on. Identify what CDIO phase (Conceive, Design, Implement, or Operate) your group will complete in this project cycle.''

Project Plan
Briefly describe your group's plan for the next 4 weeks, including major tasks that will be completed each week.

Week 5 Narrative
First, the test rig supports must be placed onto the test rig. These supports are supposed to keep the cylinder in place while the weight is pressing onto it. The construction for the deflection scale is also underway. This scale is designed to measure the deflection of the beams while weights are pressing down onto it. With this, the angle of deflection before the beam breaks can be found and recorded.

Week 6 Narrative
Initial testing has been started, but a problem came up with how to measure the deflection of each piece of PLA Material. The solution is a T-shaped attachment that will be placed behind the supports which will display marks set at 1 mm increments. That way, the amount of deflection can be determined before each piece breaks. To get a better understanding of how much weight each piece may hold, testing continued with the rectangular prism as a strength/breaking test. Initial assumptions were that the rectangular prism would only hold about 30-40 lbs. The piece surprised most by holding 74 lbs., much more than expected. Based on how strong this piece was, future tests may include rotating future pieces so that the infill is facing a different direction, thus providing different results. By doing this, data can be collected to justify whether the orientation of the infill can affect the strength of a particular piece.

Week 7 Narrative
Testing has continued with some new ideas that might help with data collection. An idea was drawn up on whether or not the PLA Material will break from fatigue. The idea is to take a piece of PLA material and place a set force in pounds on to it and see if it will hold the force in weight or break over time. This process will also be filmed to see when the piece breaks, if it breaks at all. Each break test has also been updated slightly. Each test is filmed in order to measure the deflection accurately.

Week 8 Narrative
Several things took place last week that will affect the outcomes for this week. First, the fatigue test was conducted with the surprising results that the PLA held a weight of 17.5 lbs. for well over 24 hrs. Initially, the idea was to film this fatigue test. But, this idea was altered slightly and the new plan was to test a single piece first without a camera recording it to see if it will break or not. Second, the use of the braided band of Paracord has been removed for a single strand of Paracord instead. This will make the testing a true three-point test instead of a band distributing the weight evenly at the middle. The bucket has also been lowered in height from the normal testing position due to the sudden, loud impacts drawing way too much attention. The bucket now hangs three inches above the floor, giving enough room to test while giving just enough slack for stretching of the Paracord and deformation of the bucket under weight. The plan for this week is to continue testing the three-point break test with a second round of testing of each piece. All of the shapes will undergo two different rounds of testing, with every test being recorded via a phone or camera.