asteroza + resistance   54

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 
march 2019 by asteroza
Double-negative-index ceramic aerogels for thermal superinsulation | Science
Weird boron nitride aerogel. Good repeatable crush resistance and extreme temperature swing fracture resistance. Weird in that slightly squeezing it in one direction causes it to compact orthogonally.
ceramic  boron  nitride  aerogel  fracture  temperature  cycling  resistance  materials  science  research  technology 
february 2019 by asteroza
Homepage | Digital Alloys
resistance heating mixed wires for fast printing, similar to EBAM
metal  3D  printing  fabbing  printer  fabber  resistance  heating  wire 
september 2018 by asteroza
Twisting cracks in Bouligand structures - ScienceDirect
Mantis shrimp clubs have a spiral fiber layer pattern that resists crack propagation
materials  science  research  technology  composite  fiber  helical  helicoidal  pattern  layer  crack  propagation  resistance  biomimicry 
june 2018 by asteroza
Pure lead cooled (not eutectic) uranium oxide reactor design, using new aluminum coating for the coolant systems
Sweden  uranium  oxide  lead  cooled  nuclear  reactor  power  generator  materials  science  research  technology  aluminum  surface  coating  metal  corrosion  resistance 
november 2017 by asteroza
KTH | Plasma could cut wind resistance for trucks
Electric plasma drag reduction, but for automotive applications, wouldn't physical mini vortex generator vanes/winglets be a better passive drag reduction scheme?
automotive  technology  aerodynamics  active  plasma  drag  reduction  truck  wind  resistance  electric  electronic  Delicious 
march 2017 by asteroza
Optimizing Bulk Metallic Glasses for Robust, Highly Wear-Resistant Gears - Hofm...
New-ish wear resistant gear surfaces, using a bulk casting technique to make macro scale amorphous bulk metallic glass shaped metal. End goal for JPL/NASA is mechanical parts for very low temperature regimes.
casting  amorphous  bulk  metallic  glass  materials  science  research  technology  wear  abrasion  resistance  Delicious 
december 2016 by asteroza
FHR with FIRES resistance heated firebrick thermal storage to provide peak heating on top of nuclear heating for an indirect fired gas turbine (well, maybe some makeup natural gas in there for direct heating) peaker plant collocated with the reactor.
MIT  FHR  nuclear  reactor  power  generator  NACC  combined  cycle  gas  turbine  peaker  thermal  energy  storage  FIRES  resistance  heating  heated  firebrick  heated  Delicious 
november 2016 by asteroza
A high-specific-strength and corrosion-resistant magnesium alloy : Nature Materials : Nature Publishing Group
Interesting, very low weight MgLi alloy, that if heat treated, can create surface conditions similar to stainless steel to create a protective surface barrier. Makes magnesium alloys suitable for saltwater environments now.
stainless  magnesium  lithium  alloy  materials  science  research  technology  corrosion  resistance  lightweight  Delicious 
november 2015 by asteroza
A new antibiotic kills pathogens without detectable resistance : Nature : Nature Publishing Group
New class of antibiotic found using iChip bacteria cultivation platform, that expands possible cultivatable bacteria range from the previous 1% to 50%. iChip basically is a plate that confines individual bacteria in "rooms", then the whole plate is stuffed into the dirt to feed the bacteria under ideal cultivation conditions, rather than trying to culture bacteria outside of the soil synthetically.
teixobactin  antibiotic  medicine  health  research  drug  resistance  Delicious 
january 2015 by asteroza
ACT-RPR-NPS-1107-NTER-paper-final - ACT-RPR-PRO-1107-LS-NTER.pdf
NTER, a nuclear thermal electric rocket design. Uses LH2 propellant to cool a helium brayton cycle turbine fed by a NTR that heats hydrogen and helium, then tries to supercharge the supersonic nozzle exhaust with an induction loop (which seems to require cesium seeding in the exhaust??). Also has optional oxygen feed, to emulate LANTRN. Seems like you could do better with the NTR feeding a VASIMR though...
cycle  technology  turbine  thermal  electric  induction  acceleration  LH2  space  ESA  research  propulsion  brayton  nuclear  LANTRN  rocket  loop  generator  power  helium  NETR  LOx  augmented  nozzle  MHD  Delicious  aerojet  NTR  NERVA  bimodal  thrust  heating  turboinductor  turbo-inductor  NTER  supercharger  turbocharger  augmentation  heater  resistance  ohmic  inductive 
september 2013 by asteroza - Carbon - Protecting copper from electrochemical degradation by graphene coating
Continuing research into improved corrosion resistance in steel, it appears graphene surface coated copper also has corrosion resistance improvements
metal  surface  coating  graphene  materials  science  research  technology  corrosion  resistance  nanotechnology  Delicious 
october 2012 by asteroza
Mythbusters truck bedliner can help wooden walls resist 95 PSI
The comment about using truckbed liner as a replacement for roofing in hail regions, as well as part of a (flexible?) composite is interesting...
RedneckTech  truckbed  truck  bed  liner  blast  damage  impact  resistance  building  reinforcement  defense  materials  science  research  technology  composite  surface  treatment  Delicious 
december 2011 by asteroza
Porous Aluminum Developed to Triple Li-ion Battery Capacity -- Tech-On!
Interesting new materials research from Japan to up electrode performance for batteries and capacitors
Sumitomo  japan  materials  science  research  aluminum  celmet  electrode  high  porosity  porous  metal  foam  low  resistance  corrosion  resistant  Delicious 
june 2011 by asteroza
NRC develops more durable concrete
Interesting use of wet shale rather than sand in the concrete mix to support internal curing for crack resistance
Canada  high  performance  reinforced  concrete  crack  resistance  materials  science  research  technology  construction  internal  curing  Delicious 
march 2011 by asteroza
Institute Develops Highly-effective, Long-lasting Exhaust Gas Catalyst -- Tech-On!
Basically, encapsulating exhaust gas oxidation catalysts inside gas permeable shells that physically interfere with metal catalyst particle aggregation due to high temperatures.
japan  materials  science  research  technology  exhaust  gas  catalyst  thermal  aggregation  resistance  metallic  cell  spherical  shell  high  temperature  encapsulated  processing  treatment  green  Delicious 
october 2010 by asteroza
Early Warning: Odds of Cooking the Grandkids
Well, looks like living on the coast, Tibet, and the Sierra Nevada's are looking real good now. That, and being an air conditioner repairman...
global  warming  wet  bulb  temperature  limit  human  heat  resistance  survival  climate  scenario  environment  Delicious 
may 2010 by asteroza
New Sulfur- and Coking-Tolerant Material Could Expand Applications for Solid Oxide Fuel Cells
new ceramic anode for SOFC that is hydrogen sulfide resistant and also carbon coking resistant, that operates at low(er) temps than current fuel cells.
SOFC  anode  materials  science  research  technology  YSZ  yittria  zirconia  ceramic  electrolyte  BZCYYb  barium  zirconium  cerium  yttrium  ytterbium  low  temperature  carbon  coking  sulfur  poisoning  resistance  hydrogen  sulfide  fuelcell  Delicious 
october 2009 by asteroza
NTT pumps $470 million into cloud computing by 2012 | Asiajin
Adding a proprietary encryption layer to a cloud grid is a waste of time and money, when open source equivalents are both pervasive and well tested via trial by fire. Typical NTT reinventing the wheel behavior, plus their usual proprietary twist to prevent their customers from migrating elsewhere. Didn't they get the memo that cloud computing is moving towards being service provider agnostic with data portability, as an economic stimulus to improve the customer experience since they can always leave you for someone else, and to have provider redundancy? That, and once Amazon sets up an S3 asia regional hub supporting asia regional EC2 instances, it's game over for NTT.
japan  NTT  cloud  computing  research  encryption  cryptography  service  disaster  resistance  recovery  Delicious 
may 2009 by asteroza

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