Solid-State Prosthetic Arm A Multidisciplinary capstone senior design project with the cooperation of mechanical (MAE) and electrical (ECE) engineering Departments MAE 435: Midterm Presentation 2014 - 2015 Team: Michael DiGiacomo Peter Dinga Joseph Flores Taylor Jones Shelby Nedrick (Team Leader) Denzel Stewart (ECE) Advisor: Onur Bilgen Add Departments!!! BOTH MAE and ECE Add Denzel!! – This is a multidisciplinary project.

Project Breakdown Structural Component Electronic Circuit Board Artificial Muscle Bundle DO not use “Figure X” in figure captions. (that practice is for papers only) Fix this throughout the presentation.

Structural: Design Completed Brainstorm ideas First Simple Joint Design First Prototype Completed Brainstorm ideas Draw possible designs using Inventor (Autodesk- San Rafael, California) Perform Stress Analysis Print out joints Evaluate designs Reiteration Second Iteration Test Swatches

Structural: Joint Testing Fatigue tests Deflection tests Deflection results Number of Configurations Directly proportional Geometry Triangular 1-3 Configurations Round 4-5 Configurations Print Cross Failed under load Fatigue Testing All joints capable of bending 45 and 90 degrees 50 cycles @ 45 degrees 1-3 corigations suffered from deformation 4& 5 cycles did not plastic Deformation

Artificial Muscle: Muscle Bundle Muscle Mold Muscle Bundle Wire Configuration End Cap Layout Epoxy Silicone

Artificial Muscle: Current Bundle Data Heating and Cooling Data Comparison

Electronics: Circuit Prototype Current prototype Permanent, smaller configuration Utilizes pushbutton control Optimizing layout to avoid shorting Power/ Ground SMA Wire Attachment N-Type MOSFET Circuit used to heat SMAs Single channel recreation Based on previous design Utilizes N-Type MOSFET transistor Opening and closing the circuit Actuates 1 SMA wire bundle Switch Prototype Circuit

Controls: Proposed Integration Controls and Artificial Muscle Incorporate C-DAQ with circuit Compact Data Acquisition System Allowing for PC control Operating circuit and collecting data Battery PC Battery Circuit SMA Structure USB CDAQ Circuit SMA Structure Integration and Manual Control Integration and Digital Control

Gantt 11/19/2018

Budget Breakdown Subgroup Item Item Cost Shipping Purchased Anticipated Order Total Structural Design Rapid Prototyping - Artificial Muscle Drill Bits 109.7 11.46 Yes 121.16 Electronics & Controls MOSFET 28.14 Mini Pushbutton Switch 3.20 9 12.20 Team Supplies Presentation Board 7.99 Total Spent 169.49 Budget Remaining 1830.51

Summary Items completed Joint Swatch Testing Muscle Molding Procedure C-DAQ Integration Currently in the process of 3rd iteration of joint design C-DAQ Integration Testing Milestone Met First Component Prototypes- End of the February Budget Analysis Under budget

Questions