Testing Procedures

Testing Type: Exploratory

Testing Stage: Preliminary

State of Solution: Stationary

Condition of Testing Stage: Classroom

Tools and Equipment reguired: Paper, pencil, model magic, cabinet handles, wooden dowels
 

Testing Procedures:

1.      Draw alternate solutions

2.      Choose one alternate solution to model after

3.      Model parts after drawing

4.      Discuss functions with teachers

5.      Re-design model after discussion

 

Testing Type: Assessment

Testing Stage: Preliminary

State of Solution: Stationary

Condition of Testing Stage: Lab setting

Tools and Equipment reguired: Aluminum arm, controls, metal hand piece, wires, batteries, hydraulic system
 

Testing Procedures:

1.      Complete arm structure

2.      Connect wires throughout arm into metal hand pieces

3.      Connect all wires to appropriate controls

4.      Move wrist joint up and down

5.      If joint doesn’t move then find problem and fix the problem
 

Testing Type: Assessment

Testing Stage: Secondary

State of Solution: Stationary

Condition of Testing Stage: Lab setting

Tools and Equipment reguired: Aluminum arm, controls, metal hand piece, wires, batteries
 

Testing Procedures:

1.      Connect all wires throughout arm and hand

2.      Connect all wires to appropriate controls
 

 

Testing Type: Assessment

Testing Stage: Secondary

State of Solution: Stationary

Condition of Testing Stage: Dry

Tools and Equipment required: Aluminum arms, controls, metal hand piece, wires, hydraulic pumps
 

 

Testing Procedures:

1. Push water through hydraulic pumps so hand closes

2. Pull water out through pumps so hand opens

 

 

Testing Type: Validation

Testing Stage: Primary

State of Solution: Stationary

Condition of Testing Stage: Wet

Tools and Equipment required: Pool, aluminum arms, hydraulic tubes, pumps, controls

 

Testing Procedures:

1. While underwater, push water from surface to underwater device

2. See if claw pieces close

3. Extract water

4. See if claw pieces open

 

 

Research

Hydraulics

Hydraulics deals with the mechanical properties of liquids. In fluid power, hydraulics is used for the generation, control, and transmission of power by the use of pressurized liquids. The basic idea behind any hydraulic system is very simple: Force that is applied at one point is transmitted to another point using an incompressible fluid. The fluid is almost always an oil of some sort. The force is almost always multiplied in the process.

High-pressure oil from the pump is shown in light blue, and low-pressure oil returning to the tank is shown in yellow. Click the button to activate the piston!
In the figure above and to the right you can see how the valve can apply both forward and backward pressure to the piston. The valve used here, by the way, is referred to as a "spool valve" because of its resemblance to a spool from a spool of thread.





Mechanics












Claws

Developmental work