Document Type

Undergraduate Project

Date of Degree Completion

Spring 2022

Degree Name

Bachelor of Science

Department

Engineering Technology

Committee Chair

Craig Johnson

Second Committee Member

Roger Beardsley

Third Committee Member

Charles Pringle

Abstract

Central Washington University partners with Boeing and is funded by the Joint Center of Aerospace Technology Innovation (JCATI) to develop a mechanism that takes carbon fiber wing trimmings from Boeing that are resin coated and recycles carbon fiber. This is done by crushing the wing trimmings and then putting it into a 500°C oven to melt off the resin. This project focuses on the enclosure for the oven and making sure precautions are met such as having the outside surface be less than 45c through heat transfer analysis, argon fills enclosure in 13 minutes through fluid dynamics analysis, and 99% of the resin is removed through thermodynamics analysis. This is done by using a thermocouple to measure the temperature, candles and stopwatch to measure time to fill the enclosure, and a scale to measure the change in weight as the resin is removed. The design that meets these criteria has two 20-gauge steel sheet enclosures that fit within each other, and in-between is 2-inch mineral wool insulation. This was manufactured using a CNC plasma cutter and welding. Overall, the outside surface measured to be 75 °C, 25 °C more than what was predicted. The candle blew out in 7 minutes, 6 minutes below than predicted. Finally, the change of mass between before and after the carbon fiber was in the oven showed to have a 20% resin removal which was based on the calculated mass flow rate.

Comments

2022 SOURCE presentation: https://digitalcommons.cwu.edu/source/2022/CEPS/52/

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