Overview of Status of Analysis, Design, Fabrication, Tests, etc.
11 prototype designs have been made, with each respective Moment of Inertia values computed from SOLIDWORKS.
Accomplishments from Previous Week
Researched various ways to test physical model of the stiffness matrix prototype.
Three-point flexural testing
Crack monitoring
Temperature tests
Buckling
Understanding of relating the overall moment of inertia of the stiffness matrix to the pressure gradient between the ambient and aircraft interior pressure.
Goals for Next Week (list names after each item). Use specific and measurable objectives.
The goal for next week is to narrow down the possible prototype designs to 5 with possible improvements in the design to increase the moment of inertia of the stiffness matrix or minimize material usage.
Reach out to UCSD staff for permission to use material testing equipment or strain gauges for our prototype.
With finalized prototype design, simulate the prototype and present a stress profile and compare it to other designs.
Look into topology optimization tools to use when designing an extrusion for the stiffness matrix.
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Our sponsor was pleased to see the various designs we presented, along with the tabulated Moment of Inertia values for each design. Our sponsor further tasked our group to now consider selecting the cross-sectional area for each extrusion that comprises of the stiffness matrix.
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Last week's meeting with Professor T. primarily served to identify topics that could explored through the Individual Analysis assignments and clarify the direction our team wanted to take with our Risk Reduction Assignment.
5 tasks for the Individual Analysis assignment were chosen:
Prototype Physical Testing
Exploring Simulation Software
Material Usage: Aluminum
Material Usage: Composites
Additive Manufacturing (Metal)
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
We received questions on how to make our design more lightweight, and we suggested the topology optimization simulation. Such computation would allow a design to remove excess material which would not be necessary and still withstand boundary conditions applied on to the object of interest. Date of comment made on 2/28/19.
Risks and Areas of Concern
An area of concern is if the physical prototype would not perform according to the simulation data. Our prototype is likely to be 3D printed with metal due to unique and non-traditional designs. 3D printing techniques may have some gaps and unfilled spaces within the object, likely to have different properties of ones collected from a simulation.
Resources or Information Required but not Available
Our group needs to get access to material testing equipment for future tests to see if the prototype can withstand required stress conditions.
Schedule
Upcoming Milestone:
Finalize cross-sectional shape for each extrusion of the stiffness matrix.
Finalize top 5 designs for the overall stiffness matrix.
Complete Individual Analysis assignments
Update and create a Gantt chart that illustrates the entire timeline that extends to Spring 2019 quarter.
Update Gantt chart.
Budget (list amount spent and amount remaining)
Spent: 0.
Remaining: $5000.
Progress on Report and Webpage