TTR wires for actuator : Shape Memory Alloys & Super-elastic Alloys : FURUKAWA TECHNO MATERIAL


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	Shape Memory Alloys & Super-elastic Alloys Furukawa Ni-Ti Alloys

TTR wires for actuator

How to Use

Ni-Ti SMA wire expands and contracts between its Martensite and Austenite (phase) transformation. It is achieved by heating the SMA wire under a fixed load. Ni-Ti with its high electrical resistance, SMA wire can be heated simply by applying electric current. On and off of current, wire contracts and expands, its cycle form an actuation device.

Advantages

Easy to actuate - simply apply an electric current
→Helps to make your system small, light, simple
Lightweight but High Output
Power & Speed of actuation are controllable by the current applied
Silent and smooth actuation

* Patent:JPN3956613

Property

Alloy types	Product name	Diameter (μm)	Electric resistance (R.T.) (W/m)	Min. current to move (R.T.) (mA)	Time(R.T.)		Max. actual load (gf(MPa))	Max. actual strain %
Alloy types	Product name	Diameter (μm)	Electric resistance (R.T.) (W/m)	Min. current to move (R.T.) (mA)	Contraction (sec)	Expansion (sec)	Max. actual load (gf(MPa))	Max. actual strain %
Ni-Ti	NT- 　M3- 　　TTR	50	400	110	0.3	0.7	60(300)	～5
		100	100	300	0.6	2.5	200(250)
		200	25	700	1.5	7.0	640(200)
Ni-Ti-Cu	NT- 　H5- 　　TTR	50	550	90	0.3	0.8	70(350)	～5
		100	140	240	1.0	2.5	240(300)
		200	35	600	2.0	8.0	800(250)
	NT- 　H7- 　　TTR	50	550	90	0.5	1.0	80(400)	～5
		100	140	200	1.0	3.0	280(350)
		200	35	500	2.5	9.0	960(300)

** ** Above data are for your reference only, not a guarantee of performance. Actual electric current required for an actuation and the actual duration of an actuation vary according to the surrounding temperature and air-flow conditions of the test. Actual recoverable performance varies according to the fixed load and electric current flow of the test.

Strain – Temperature curves by constant load test

Effect of electrical current on the strain change (by constant load 200MPa at R.T. )

Transformation temperatures (Af, Mf) change with load

Effect on strain change by thermal cycles.

S-N curve for breakage

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