Working PortfolioSam Goljahi

DARPA Warrior Web ProjectBattery Power

Processing and Data Storage

Achilles assist

Straps

Hip joint

Harvest /Assist Mechanism

Belt for Pack and System

Master cylinders (Pneumatic to Hydraulic)

Pneumatic canister

Note: Solenoid actuation has not been ruled out

Concept:Design and develop system to reduce load on military and civilian personal

DARPA Warrior Web Project

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Repetitive tasks cause frequent injuries Injuries to knees

Normal gait cycle Lifting medium to heavy loads

DARPA Warrior Web ProjectDeveloping exoskeleton for military and civilian purposes

Reduce load on person carrying 100+ lbs. of equipment

Reduce injuries due to reparative actionsStress-Strain relationship between exoskeleton and human

Passive activation for minimal energy use FEA analysis of components

DARPA Warrior Web ProjectRapid response to prevent injury

Controllable stiffness to harvest and redistribute energy

Pneumatically driven for rapid response

Sensor layerControl system

Data to OpenSim for inverse kinematics and eventually forward dynamics

Example 9 DOF sensor Belt with Processor

Data transfer for OpenSim analysis

(not real time)

Feedback to VSC and harvest/assist

Cuddle Fish Design

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Cuddle Fish Project

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UCLA Research

Fracture of brittle materials Design and develop testing methods to apply electric fields while

applying bending stress Non-linear stress-strain relationship Piezoelectric effects

UCLA ResearchSpecial design four point bending device to allow for electric field to be applied to specimen

Highly geared down DC motor to provide constant force Rigid design to have all strain transfer to specimen

UCLA Research

Micro/Nano scale measurements using atomic force microscopy (AFM/PFM)

Understanding material characteristics Intrinsic properties Ferroelectric brittle materials

Personal Side Projects

Leash BoneBone shaped design

Solid model created and strength tested

3D printed prototype

Dog walking aidInexpensive to manufacture

Functional for all users

Personal Side Projects

CycleopsSports related consumer

productHeart rate monitoringPath indication for

person doing activity

Visual indication of person doing activityIntegration with

navigational systems to warn motorists

Provisional Patent in processIntuitive prediction of

up coming turn using GPS and sensor suite

Sheet Metal Design

Linear Extrusion Design

Die Casted