asteroza + shape   49

Saarbrücken research team uses artificial muscles to develop an air conditioner for the future | Universität des Saarlandes
Using nitinol shape memory alloys as the thermal medium/matrix in a thermal wheel rotary air heat exchanger, where the wheel itself is the HVAC system!
rotary  heat  exchanger  thermal  wheel  air  entropy  nitinol  shape  memory  alloy  metal  conditioner  heater  HVAC  mechanical  materials  science  research  technology  cooling  heating 
12 days ago by asteroza
Exergyn®
Power generator using cycling waste heat hot water/cooling water to drive a shape memory alloy wire actuator piston, which drives a hydraulic transmission and power generator. Made a discovery for high cycle ninitol alloy (10 million versus 1 million cycles for regular NT wire) to make the linear actuator work for industrial applications. Uses direct impingement of hot water and cold water to cycle the actuator though...
nitinol  shape  memory  metal  alloy  materials  science  research  technology  wasteheat  power  generator  linear  actuator  piston  hydraulic  transmission  drive  scavenging  harvesting  high  cycle  fatigue  resistance 
12 days ago by asteroza
A multicaloric cooling cycle that exploits thermal hysteresis | Nature Materials
Uses a ring of shape memory alloy, and magnets plus compression rollers to enable a 6 stage cooling system.
shape  memory  metal  alloy  giant  magnetocaloric  refridgeration  cooling  materials  science  research  technology  permanent  magnet 
september 2018 by asteroza
NSLComm
Interesting deployable antenna reflector using a shape memory polymer for the reflector ribs (so sorta looks like a clam shell), and an active focus subreflector to correct and beam steer.
newspace  deployable  antenna  reflector  space  cubesat  collapsible  folding  shape  memory  polymer 
march 2018 by asteroza
Superelastic Tire
But don't most shape memory alloys (nickel titanium based) have a critical temperature where they change memory?
NASA  shape  memory  alloy  chainmail  compliant  flexible  metal  nickel  titanium  tire  wheel  space  technology  automotive  research 
november 2017 by asteroza
Ironclad beetles inspire new 'memory' metal suspension for military vehicles | B...
Uh, but memory metal shapes can be reset due to heat. If an IFV takes an IED hit, won't the heat from the explosion mangle the suspension into the broken shape?
memory  metal  suspension  automotive  technology  military  shape  alloy 
november 2016 by asteroza
Study and research news | Universität des Saarlandes
Interesting alternative medium for thermal wheel heat exchangers, using shape memory alloy fibers, which have a convenient property of mild stress causing them to heat up.
rotary  adiabatic  thermal  enthalpy  wheel  heat  exchanger  shape  memory  alloy  metal  fiber  store  cooling  research  technology  Delicious 
february 2016 by asteroza
Ultralow-fatigue shape memory alloy films
Sounds like they are reexamining NT alloys for long term fatigue characterization.
low  fatigue  titanium  nickel  metal  shape  memory  alloy  metallurgy  materials  science  research  technology  nitinol 
june 2015 by asteroza
Optics InfoBase: Optica - Optical Fourier synthesis of high-repetition-rate pulses
I think this is using an array of (continuous wave?) lasers constructively interfering to create a specific custom laser pulse waveform.
arbitrary  pulse  laser  wave  waveform  shaping  optics  research  technology  shape  array  Delicious 
january 2015 by asteroza
Empa - Shape Memory Alloys - A shape-conscious alloy
Low temp iron based SMA's make SMA reinforced prestressed concrete beams practical, which can be prestressed without elaborate tensioning systems. The only issue is the 160 degree transition temperature means if such a beam ever got exposed to a vehicle fire, it might fail faster than conventional prestressed concrete using steel rebar...
iron  manganese  silicon  SMA  shape  memory  alloy  metal  materials  science  research  technology  prestressed  concrete  tension  rebar  alternative  construction  building  architecture  Delicious 
june 2014 by asteroza
Parallelogram Found Best for Glass Bottles
A roughly parallelogram shaped (more like a symmetric leaf with rounded tips) provides an easier grip to pop the cap off
elderly  beverage  container  design  ergonomics  glass  parallelogram  shape  lid  cap  Delicious 
june 2014 by asteroza
ClearSign Combustion Corporation
Interesting combustor tech, that uses a high E field to manipulate flame ions, rather than trying to move to a plasma combustor and it's associated energy penalty. Marked as a means of normalizing the heat in a flame so you don't get hot spots that produce NOx or cold spots that have incomplete combustion.
ion  control  technology  electric  electrodynamic  shape  combustion  research  manipulation  combustor  flame  field  clean  voltage  high  burn  Delicious 
october 2013 by asteroza
Steer me sideways: icebreaker attacks pack ice side-on - tech - 02 August 2013 - New Scientist
Oddball icebreaker uses an asymmetric hull and an oblique stance with swiveling propulsors to break a wide path. Not quite beam on ice breaking though.
marine  russia  oblique  ship  asymmetric  shape  hull  engineering  design  icebreaker  Delicious 
august 2013 by asteroza
Solar Machines, Inc.
Seems to be research solar thermal energy conversion to direct mechanical forces via thermally triggered shape memory alloy linear and rotary actuators. Applications are for reciprocating pumps in rural areas, so that covers both water pumping and refrigerator compressors.
solar  thermal  heat  direct  mechanical  force  power  conversion  linear  rotary  actuator  motion  shape  memory  alloy  metal  materials  science  research  technology  hardware  Delicious 
june 2011 by asteroza
New process promises to revolutionize manufacturing of products
New research on memory metals that have multiple shape memories, rather than just two with a single transition temperature
materials  science  research  multiple  shape  memory  metal  Delicious 
september 2010 by asteroza
New Hybrid Field Motor Uses Less Rare Earth Material -- Tech-On!
Trying to get some of the features of a permanent magnet motor with less rare earth metals used, the japanese come up with a newer hybrid type motor, which uses a moldable soft magnetic composite to make a complex shaped permanent magnet for improved performance.
hybrid  field  electric  motor  soft  magnetic  composite  moldable  magnet  3D  shape  manufacturing  permanent  electromagnet  Delicious 
april 2010 by asteroza
Slideshow: Solar power, shaped up
Oddball self intersecting 3D solar panel rigs that are non-moving appear to have comparable efficiency to flat solar panels with sun tracking systems. How would you go about manufacturing these shapes is a bit of an issue though...
origmai  self  intersecting  3D  solar  panel  shape  research  green  energy  power  generator  Delicious 
april 2010 by asteroza

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