Department - Author 1

Mechanical Engineering Department

Degree Name - Author 1

BS in Mechanical Engineering

AppendixA.pdf (756 kB)
Tables

AppendixB.pdf (1109 kB)
Drawings

AppendixC.pdf (50 kB)
Vendors

AppendixD.pdf (6137 kB)
Specification Sheets

AppendixE.pdf (3116 kB)
Analysis

AppendixF.pdf (282 kB)
Gantt Chart

Date

12-2013

Primary Advisor

Peter Schuster

Abstract/Summary

Peach pits can break during processing into several small fragments and are difficult to see and remove from the peach. Wawona Frozen Foods is asking for a fully designed, built and tested prototype that can detect these pit fragments with ease and speed. Our design uses an array of needles that puncture into a peach half. A pressure sensor measures the force on the needles and determines whether or not each needle hit the peach flesh or a pit fragment. The array of needles consists of 313 needles each with a diameter of 0.6 mm with a total array diameter of 1.5 inches. The needle array puts a maximum force of 12 lbs compression on the peach half when the needles are puncturing into peach flesh. Our device works for peaches that range from 2-3 inches in diameter. Testing has shown that the needles do not change the integrity or taste of the peach.

Our design was built and tested over 3 months and improved as necessary. All feedback from Wawona during the Critical Design Review was be incorporated into the final prototype.

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