Mechanical Properties and Electrical Resistance of TiNi Shape-Memory Alloy

Jin, J.L.; Chi, YunLong

doi:10.4028/www.scientific.net/msf.394-395.241

Cited by 5 publications

(2 citation statements)

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“…Changes in resistance for a given SMA alloy are dependent on temperature, stresses and the number of work cycles [9,10]. The authors of works [11,12,13] were concerned with the determination of the relationship of resistance to temperature and strain in NiTi alloys. These relationships are influenced by many factors, among which many have been mentioned above and include the composition of the alloy.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Tests of Shape Memory Alloy Wires

Rączka

Konieczny

Sibielak

2013

SSP

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In this paper, tests on Shape Memory Alloy (SMA) wires for use in controlled actuators have been discussed. Selected static and dynamic characteristic curves being the result of experiments were presented in the article. Experiments were conducted at the Dynamics and Control of Structures Laboratory of the AGH University of Science and Technology. Laboratory tests of SMA wires used as actuators have been presented in the paper. Actuators made from the wires contract by about 4-5% of their length when heated, like small muscles, and loosen when cooled. SMA wires used as drives are significantly smaller than traditional solutions using motors or electromagnet to execute work. However, these actuators have flaws, such as strongly non-linear hysteresis. These are main problems in designing actuators, which is why SMA wires are often used in the construction of two-state actuators working as on-off actuators. The problems with SMA wires in their applications as drives are their static and dynamic properties, sensitivity to the environment, poor repeatability of production, non-linearity and hysteresis loop. The tested wires were made from a nickel and titanium alloy; this is an alloy which is often used in drive systems.

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Section: Introductionmentioning

confidence: 99%

Laboratory Tests of Shape Memory Alloy Wires

Rączka

Konieczny

Sibielak

2013

SSP

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“…More recently, other authors started giving emphasis to the stress induced transformations using electrical resistivity probe. Studies on the electrical resistivity during thermomechanical loading of Ni-Ti alloys have been reported in the literature for strains up to 0.06 [4], 1.5 [5], 3% [6] and 5% [7,8]. The changes in electrical resistivity have been correlated to changes in Long Range Order changes taking place during the aging phenomena [9].…”

Section: Introductionmentioning

confidence: 99%

Micromemory Effects Involved during Martensitic Transformation in Ni-Rich NiTi Alloy

Mahesh

Santos

Fernandes

2006

MSF

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In the present study, interrupted mechanical cycles are performed to observe ‘micromemory effect’ for the Ni-rich (Ni51.0at%-Ti) Ni-Ti Shape Memory Alloy (SMA) with different strain rates. In addition, the tensile test is coupled with the four-probe electrical resistivity (ER) measurements. Coupled measurements of stress-strain and electrical resistivity for mechanical cycling (with SIM) have not yet been reported in the literature. The behaviour of the alloy during the interrupted cycles is discussed on the basis of the ER profile

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