multi-axis load cell chang joon lee cee398 kuc experimental methods in structural engineering
TRANSCRIPT
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Multi-axis Load Cell
Chang Joon Lee
CEE398 KUC
Experimental Methods in Structural Engineering
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Keyword for Multi-axis Load Cell
“MULTI-AXIS LOAD CELL”
NOT “Multiaxial load cell”
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Outline
■ What is multi-axis load cell?
■ What features of multi-axis load cell?
■ Products
■ How does it works?
■ Summary
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What is Multi-axis Load Cell
Any load cell (one unit) which can measure multi-axis load simultaneously
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What features of multi-axis load cell
1. DOFs
2. Capacity of each DOFs
3. Mounting area (load cell shape and dimension)
4. Prices
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Products
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2 DOF : 2 Translation
Fx= Fy = 200lb
$1800
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3 DOF:3 Translation, Landing Gear Sensor
Fx, Fy = 50,000 lb
Fz = 150,000 lb
46” x 32”
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2 DOF:1 Translation + 1 Rotation
Fz = 50~200lb
Mx = 50~200lb-in
Φ2.23in
$1600
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3 DOF:1 Translation + 2 Rotation
Fz =1,000~50,000 lb,
Mx,My =400~2,000 in-lb
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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”
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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”
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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”
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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”
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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”
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How does it works?
P
P
Axial strain ε Axial load P
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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
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How does it works?
Different Manufacturers make different type of multi-axis load cell different “Know-how”
No information about their design
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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 )
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FYI
www.amtiweb.com
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THANK YOU
AND
QUESTIONS