Bits And Bobs Flashcards
1
Q
Shape shifting materials
A
Change in response to electric current
Change in temp
A magnetic field
2
Q
Shape memory alloys
A
Returns to original shape when heated (can be done with current but slow. However this is simple, lightweight small and low power)
3
Q
Shape memory polymers
A
Like smas but more elasticity, mouldable, low cost can be triggered by light electricity magnetism
4
Q
Structure
A
Parts designed to handle forces applied to it
5
Q
Static force
A
Always present and doesn’t change magnetude
6
Q
Dynamic force
A
Many move or change in magnetude or direction
Hard to predict
Safety factor applied to handle forces
7
Q
Measures strain/force
A
Force strain resistor
Load cell
8
Q
Measures rotation
A
Reflective/slotted opto switch
Gear tooth sensor
9
Q
Output speed
A
Input speed/gear ratio
