a Thermal Conduction Switch Based on Low Hysteresis Nitife Shape Memory Alloy Helical Springs

Details a Thermal Conduction Switch Based on Low Hysteresis Nitife Shape Memory Alloy Helical Springs a Thermal Conduction Switch Based on Low Hysteresis Nitife Shape Memory Alloy Helical Springs

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc..986....3k&link_type=abstract

ADVANCES IN CRYOGENIC ENGINEERING MATERIALS: Transactions of the International Cryogenic Materials Conference - ICMC, Vol. 54.

Other

Shape-Memory Effect, Yield Stress, Superelasticity, Nonelectronic Thermal Conduction And Heat-Pulse Propagation In Solids, Thermal Waves, Specific Phase Transitions, Domain Structure, Hysteresis, Martensitic Transformations, Cryogenics, Refrigerators, Low-Temperature Detectors, And Other Low-Temperature Equipment

Scientific paper

Shape memory alloy (SMA) actuators possess an inherent property of sensing a change in temperature and delivering significant force against external loads through a shape change resulting from a temperature-induced phase transformation. The utilization of a reversible trigonal (R-phase) to cubic phase transformation in NiTiFe SMAs allows for this strain recovery to occur with reduced hysteresis between the forward and reverse transformations. However, the magnitude of the strain recovery associated with the R-phase transformation is lower than that of the monoclinic to cubic phase transformation. The use of helical springs can compensate for this design constraint as they produce significant stroke when compared to straight elements such as thin strips and wires. This work reports on the development and implementation of NiTiFe helical springs in a low-hysteresis thermal conduction switch for advanced spaceport applications associated with NASA's requirements for future lunar and Mars missions. Such a low-hysteresis thermal conduction switch can provide on-demand heat transfer between two reservoirs at different temperatures.

Affiliated with

Also associated with

No associations

Rating

a Thermal Conduction Switch Based on Low Hysteresis Nitife Shape Memory Alloy Helical Springs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with a Thermal Conduction Switch Based on Low Hysteresis Nitife Shape Memory Alloy Helical Springs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and a Thermal Conduction Switch Based on Low Hysteresis Nitife Shape Memory Alloy Helical Springs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1036400