Multi-axis Load Cell

Chang Joon Lee

CEE398 KUC

Experimental Methods in Structural Engineering

Keyword for Multi-axis Load Cell

“MULTI-AXIS LOAD CELL”

NOT “Multiaxial load cell”

                              

 

Outline

■ What is multi-axis load cell?

■ What features of multi-axis load cell?

■ Products

■ How does it works?

■ Summary

What is Multi-axis Load Cell

Any load cell (one unit) which can measure multi-axis load simultaneously

What features of multi-axis load cell

1. DOFs

2. Capacity of each DOFs

3. Mounting area (load cell shape and dimension)

4. Prices

Products

2 DOF : 2 Translation

Fx= Fy = 200lb

$1800

3 DOF:3 Translation, Landing Gear Sensor

Fx, Fy = 50,000 lb

Fz = 150,000 lb

46” x 32”

2 DOF:1 Translation + 1 Rotation

Fz = 50~200lb

Mx = 50~200lb-in

Φ2.23in

$1600

3 DOF:1 Translation + 2 Rotation

Fz =1,000~50,000 lb,

Mx,My =400~2,000 in-lb

6 DOF:3 Translation + 3 Rotation

Fx, Fy = 50~500 lb Fz = 100~1,000 lbMx, My = 100~1,000 in-lbMz = 50~500 in-lb

3”x 3”

6 DOF:3 Translation + 3 Rotation

Fx, Fy = 5,000~10,000 lb

Fz = 10,000~20,000 lb

Mx, My = 40,000~80,000 in-lb

Mz = 20,000~40,000 in-lb

8” x 8”

6 DOF:3 Translation + 3 Rotation

Fx, Fy = 500~2,000 lb

Fz = 1,000~4,000 lb

Mx, My = 6,000~12,000 in-lb

Mz = 3,000~6,000 in-lb

12”x 12”

6 DOF:3 Translation + 3 Rotation

Fx, Fy = 500~2,000 lb

Fz = 1,000~4,000 lb

Mx = 4,000~16,000 in-lb

My = 8,000~32,000 in-lb

Mz = 4,500~18,000 in-lb

20” x 8”

6 DOF: 3 Translation + 3 Rotation, Landing Gear Sensor

Fx, Fy = 25,000 lb Fz = 50,000 lbMz= 25,000 ft-lb (300,000 in-lb)Mx=My=50,000 ft-lb (600,000 in-lb)

32” x 32”

How does it works?

P

P

Axial strain ε Axial load P

How does it works?

TT

strain ε max. σmax τ Torsional moment T

45◦

τ

τ

τ

τ

σmin = -τ

σmin = -τ

σmax= τ

σmax = τ

ε

How does it works?

Different Manufacturers make different type of multi-axis load cell different “Know-how”

No information about their design

Summary

1. General Capacity of Multi-axis Load Cell

Fx = Fy < Fz

Mz < Mx = My

2. Max. Capacity of 6 DOF Load Cell

Fx = Fy =25,000 lb

Fz = 50,000lb

Mz= 25,000 ft-lb ( 300,000 in-lb)

Mx=My= 50,000 ft-lb ( 600,000 in-lb )

FYI

www.amtiweb.com

THANK YOU

AND

QUESTIONS