156B Week 10

Status:

Although the machine shop has had delays in returning all the PVC spar sections, we were able to retrieve one spar segment and the complete base mechanism for demonstration in the sponsor design review presentation. The spar segment has been completed with the ADV mount, probe holding fixture, and buoyant foam and was tested for deflection. Tests showed the PVC was more than strong enough to withstand the maximum moments calculated from beam analysis despite the various holes and cutouts made on the pipe. Demonstrative videos and pictures were taken during the fabrication and will be included in the final report and website. There’s a likelihood we will not receive the rest of our project parts from the machine shop until the end of the week, and thus, the weekend will entail fabricating and completing the rest of the prototype to have the final deliverables ready for the sponsor during finals week. Preparations are being made for the various presentations and assignments due the next several days.

Accomplishments from Previous Week

• Continued work on Final Report

  • Corrections from peer review comments were made on Final Report

  • Review of other team’s report and webpage was completed

• Updated documentation on the website

• Received essential manufactured parts from machine shop such as PVC pipes with holes and cutouts and full base mechanism

• Made significant progress on the final prototype. The functionality of the whole spar mooring can be summarized using one spar section and base mechanism, which are currently completed

• An actual ADV was loaned to the team by the sponsor

Goals for Next Week (list names after each item). Use specific and measurable objectives.

• Update and finish the complete final report and final team webpage (Team)

• Begin working on and finish the Sponsor Design Review presentation scheduled for Friday 3/12/2021 @ 1:30pm (Team)

• Complete extreme conditions calculations (Horim Yu and Erik Zamarripa)

• Manufacture and assemble the complete final design prototype (Erik Zamarripa, Ayesha Riaz & Eliran Lenard)

• Purchase the last necessary parts such as stainless steel rope, extra fasteners and additional foam solution (Erik Zamarripa, Ayesha Riaz & Eliran Lenard)

• Prepare for Senior Design Day presentations (Team)

Sponsor Comments from Last Meeting(Zoom meeting 3/2/2021)

• Discussed the ADV mount design, how to hold the probe in place on the spar and noted that the design we had was adequate and would like to see the rigidity of the fastened and mounted parts

• Updated him with the current progress on the project - machine shop parts, report and webpage

• Discussed plans for the presentation in week 10 and updated us with times he’d be available for it

• Discussed the team meeting with professor Maziar regarding the FEA to resolve minor issues. He approved of the FEA figures generated and requested the team also find out the conditions for failure of the spar mooring, such as tsunami conditions

Instructor Comments from Last Meeting(Zoom meeting 3/2/2021)

• Reminded us about lubrication for metal threaded parts and to be very careful using PVC cement due to its incredibly fast drying time (as it turns out, this did pose a problem during fabrication but was ultimately overcome)

• Updated what materials have been purchased from Industrial Metal supply ( plate for the bottom base, rods for hinge, setting pins, etc) and clarified for the distinctions between different metals. Ensured all the parts that will be used are stainless steel

• Discussed the current progress of the project regarding machine shop parts and found the progress to be sufficient, but noted there was much work needed once rest of parts are received and encouraged working diligently (as the team has continued to do)

• Discussed presentation plans with the sponsor for week 10 as well as the senior day for finals week

Comments from Other Students in the Class (from 3/7/21)

Feedback from PDR presentation

• Their simulations/analysis were pretty well done, and thorough. FEA analysis helps support the group's design decisions.

• Great graphs, matlab modeling, and experiment video

• Encouraged more energetic speaking from the presenters

Feedback from Webpage

Overall great job with everything, but there is some suggestions that

• Better way to put the matlab code on the webpage

• Upload a higher resolution picture of the Gantt chart

Feedback from Final report

• Overall a well written report

• Add more descriptions to the analysis figures and describe the physical background for calculations

• Chapter 2 : be consistent using “Figure X”

• Chapter 3 : unnecessary spacing, decrease the column width for table 3.4

• Chapter 4 : for figure 4.4, organize 3 images using the matlab subplot.

Schedule

• Describe upcoming milestone

• Sponsor Design Review Presentation (3/12/21)

• Final report and webpage (3/12/21)

• Finish complete prototype (3/13/21)

• Continue and complete Hardware testing (3/6/21-3/14/21)

• Senior Design Day Presentations (3/17/21)

• Deliver final prototype to sponsor (3/18/21)

• Update Gantt chart.

Budget (list amount spent and amount remaining)

• The team has spent ($541.56) out of the $1000 budget limit

Progress on Report and Webpage

Report:

• Update performance results section of report and include pictures of the recently completed prototype components

• Complete and review final draft of the final report - due Friday of week 10

Webpage:

• Week 10 progress report

• Update Budget list and analysis figures (FEA, CAD, and Matlab plots)

• Upload multimedia (photo album, videos, figures)