Schedule
Figure 1: Image of Gantt Chart
Fall Quarter
Fall schedule covers the Proposal/Report Writing, Analysis, and Documentation task headings. Some of the scheduling issues that came up is the amount of actual time spent on analysis compared to what has been estimated. This issue primarily comes from calculation errors that was first listed in previous analysis as well as new requirements that come from other team members. In order to get back on schedule the Gantt chart will be able to guide prioritize to certain tasks.
Winter Quarter
The tasks listed in the Fall quarter leading up to the construction of the device in the Winter quarter. This includes building the inner, outer, and middle enclosures. One of the issues that came up this quarter was scheduling issues. Parts were not able to be ordered until the second week of the quarter and shipping had all the parts arrive but the start of week 5. This led to having to wait longer than scheduled to start manufacturing, this is shown in section 4 of the Gantt chart. Another issue was having to redesign parts 20-001 and 20-002 so that spot welding can be done efficiently (3m and 3n on Gannt chart). This led to having to push back the start of manufacturing for those two parts and start on the middle enclosure instead.
Spring Quarter
The tasks listed in Fall quarter and the construction in Winter quarter lead up to the testing of the device in Spring quarter. This includes running a full cycle of the JCATI and measuring the temperature of the inside and outside of the enclosure while measuring the leakage of the argon.
Budget
Table 1: Project Budget
Summary of Budget
A large cost of the project comes from buying the steel for the enclosure as shown in Appendix C in the Project Proposal. This steel is a 20-gauge steel sheet of thickness 0.036 which is different from the material in Analysis 1 and 6 but since the thickness of steel has little effect on the change of temperature this difference won’t affect the estimated surface temperature. The steel sheets will be sourced from Ryerson and are estimated to cost around $432 for two 48”x96” steel sheets with tax and shipping. The next highest cost comes from buying the mineral wool or the insulator needed for the enclosure, this will do all the heat conduction. From Grainger, the mineral wool will cost $111 for 4 sheets of 48” x 24” x 2” with shipping and tax. A full detailed budget with the above materials and other parts is shown in Appendix C.
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During Spring quarter, it was noted it would be easier to do maintenance on the oven if there was a door on the outer enclosure leading to the inner enclosure. To do this hinges and latches needed to be purchased as shown in Appendix C. With testing it was also noted that parts needed to be purchased since they were not provided by the University such as tea light candles also shown in Appendix C. These unforeseen expenses could have been avoided if the initial design of the oven enclosure included how testing could be done and the overall operation and maintenance of the oven.
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The only outsourcing that will be done is using a CNC at the CWU Machine shop. The cost for this outsourcing will be $100, this is shown in Appendix D.
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Total labor as shown in the Gantt chart in Appendix E shows a total amount of part construction, device construction, analysis, drawing, reporting, and testing to be 300 hours. Using the minimum wage for Washington State of $13.69 the total amount of labor cost will be $4188 as shown in Appendix D.
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Some major sub-costs come from the labor, which is $4188, the purchasing of parts, and outsourcing. Taxes have not been calculated yet but are expected to be another major sub-cost. These prices are listed in Appendix D.
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The cost of this project is funded by a $5000 grant from JCATI and sponsored by Boeing.