30 um Carbon wireCeramic isolator

Fork Arm

Electricalcable

Copper tube

Soldering

Actual PS Wire fixation

24.02.2014

30 um carbon wire

Fork arm

BCM strain gaugeSB4-350-3.8-P-3 Electrical

cableSolderedjunction wire-cable

Wire Vibration Measurement Current Status

24.02.2014

Silicon strain gauge pictures

dimensions:

length = 5 mmwidth = 0.30 mmthickness = 0.05 mm

24.02.2014

Silicon Protecting glue Metallization Bonded wire

Silicon strain gauge – Bonding detail

TOP VIEW

SIDE VIEW

Silicon

Protecting glue

Metallization

Bonded wire

24.02.2014

Ceramic isolators Ø 1.2

Action to bemeasured bythe strain gauge

Arm

Carbon Wire

Sleeve in copper

Soldering

Strain gaugesStrain gauges support Alumina 100 to 200 um

5

5

~ SCALE 10:1

Metallization+ bazing

Carbon wire sensor based in semiconductor strain gauges DRAFT PROPOSAL

24.02.2014

Other options

Use stud bumping instead of brazing

Use full silicon piece properly shaped to have a suitable gauge factor

Produce a kind of metal foil strain gauge using a ceramic instead of plastic substrate

Ceramic

Metal deposition

?

24.02.2014