asteroza + structure   281

Technology | WaveCel
Interesting engineered structure to provide protection from linear and rotational impacts, as an alternative to traditional EPS foam helmets. Seems to use a slipping/buckling triangle design? I wonder what kinds of improvements there would be using a smaller microstructure?
WaveCel  buckling  structure  impact  absorbtion  helmet  safety  materials  science  research  technology 
8 weeks ago by asteroza
Welcome to Aquatraz, my fishy detainees...
floating  fish  pen  aqualculture  farm  marine  structure 
january 2019 by asteroza
Team JMCC WING -Water Abundance XPRIZE Competition | Indiegogo
Some sort of low eight high torque wind turbine using fabric blades (and fabric duct), seems to use a pole/wire tensegrity structure
tensegrity  structure  high  torque  wind  turbine  power  generator  fabric  blade  atmospheric  water  fog  collector 
october 2018 by asteroza
In-Space Manufacturing - Kleos Space S.A.
Some sort of in space 3D printing of carbon fiber composites?
newspace  3D  printing  fabbing  space  structure  carbon  fiber 
october 2018 by asteroza
"Future Earthen Dwellers" with Stephanie Chaltiel Shameel Muhammed IAAC | Domaine de Boisbuchet
Using flying drone to fire bioshotcrete externally onto fabric domes to create hardshell structures locally "quickly"
UAV  drone  construction  bioshotcrete  shotcrete  reinforcement  spray  structure 
october 2018 by asteroza
Nitrogen fixation in a landrace of maize is supported by a mucilage-associated diazotrophic microbiota
Corn/maize variant that doesn't need fertilizer in poor soil because it has weird aerial root structure actively secreting goop that support nitrogen fixation bacteria, so in theory easier/more sustainable agriculture without fertilizer, but the thing is a bit more tree-like and takes 2-3x as long to grow ears. Still neat though.
maize  corn  aerial  root  structure  nitrogen  fixation  biology  research  agriculture  mexico 
august 2018 by asteroza
Agile Robotic Fliers: A Morphing-Based Approach | Soft Robotics
Morphing quad copter, changes from a H frame configuration to I to change a major dimension for passing through tight openings
UAV  aviation  research  morphing  frame  fuselage  structure  quadcopter  variable  folding 
june 2018 by asteroza
Modular spacecraft with integrated structural electrodynamic propulsion
Idea is if you have large enough structures (booms), then you can do some interesting attitude control and propulsion tricks
space  technology  research  spacecraft  attitude  control  propulsion  design  integrated  structure  boom  electrodynamic  tether 
may 2018 by asteroza
Self-Deployed Space or Planetary Habitats and Extremely Large Structures
NIAC phase 1 results. NRO research related as well for deployable space telescopes. Rigidized UV cured polymer thin film bubbles for space applications. Possible flat primary mirrors/solar sails, but if they are making spheres, making curved mirror segments should be doable. If you use 6 stabilizing hoops as cut lines, can get 6 sphere segments without much waste (waste could be repurposed as additional mirror segments)
NIAC  NASA  deployable  space  telescope  primary  mirror  solar  sail  polymer  UV  cured  rigidizable  thin  film  structure  bubble 
april 2018 by asteroza
Additively manufactured hierarchical stainless steels with high strength and ductility : Nature Materials : Nature Research
hierarchically heterogeneous microstructure stainless steal via 3D cellular structures seems to be better than bulk stainless. Made using a conventional laser powderbed fusion 3D printer.
3D  printing  fabbing  materials  science  research  technology  stainless  steel  hierarchical  structure  microstructure  metallurgy  ceullar 
november 2017 by asteroza
The new technology for porous material production | EurekAlert! Science News
New aluminum foam sandwich, monolithic too so possible alternative to conventional aluminum honeycomb composites maybe
materials  science  research  technology  aluminum  foam  sandwich  porous  structure  metal  metallurgy 
july 2017 by asteroza
Phys. Rev. Lett. 117, 175901 (2016) - Lightweight Mechanical Metamaterials with ...
Using a cubic octet truss with internal members made of different materials, the internal expansion causes macro compression of the unit cell, shrinking things overall, achieving a negative thermal expansion coefficient metamaterial, of sorts.
negative  thermal  expansion  cubic  octet  truss  3D  printing  fabbing  materials  science  research  technology  shrink  structure  microlattice  lattice  composite  Delicious 
october 2016 by asteroza
Photonic multilayer structure of Begonia chloroplasts enhances photosynthetic ef...
Apparently this plant has highly ordered thylakoid tower structure choloroplasts resembling a multilayer photonic crystal, thus implementing slow light techniques to capture more green and red light.
photonic  crystal  high  order  ordered  thylakoid  chloroplast  multilayer  solar  power  biology  physics  slow  light  materials  science  research  photosynthesis  structure  photochemical  propagation  capture  photochemistry  Delicious 
october 2016 by asteroza
Argonne technology puts solar power to work all night long | Argonne National La...
Graphite foam pores holding phase change salt for thermal storage improve thermal transfer for thermal storage. For steam turbine linkage, use magnesium chloride, for higher temperature SCO2 turbines use sodium chloride.
graphite  foam  porous  structure  thermal  storage  CSP  solar  energy  SCO2  cycle  phase  change  PCM  salt  materials  science  research  technology  Delicious 
october 2016 by asteroza
Composite 3D-printed metastructures for low-frequency and broadband vibration ab...
Making rocket payload launch shrouds out of engineered foam metastructures to integrate sound absorption.
3D  printing  fabbing  engineered  foam  metastructure  structure  sound  absorber  launch  payload  shroud  cover  rocket  space  materials  science  research  technology  Delicious 
august 2016 by asteroza
In-drop capillary spooling of spider capture thread inspires hybrid fibers with mixed solid–liquid mechanical properties
So spider silk has a watery glue that also functions as a local spool to pull in loose silk thread. Now that has been emulated with oil droplets and plastic filament.
biomimicry  liquid  wire  loose  thread  spool  spooling  tension  hybrid  solid  elastocapillarity  fluid  structure  interaction  materials  science  research  technology  Delicious 
may 2016 by asteroza
Technische Universität Wien : Mehr Platz für die Sonne
Called Heliofloat, it sounds like a variation of a classical PSP platform, using semi-flexible barrel/cylinder side walls to absorb some wave motion. Using a marine concrete PSP sounds more durable, though at greater weight/cost?
ocean  marine  structure  floating  solar  PV  panel  mount  heliofloat  flexible  barrel  cylinder  side  all  PSP  Delicious 
may 2016 by asteroza
Material heterogeneity in cancellous bone promotes deformation recovery after mechanical failure
So soft surface but brittle interior type bones seem to guide cracks into structurally insensitive areas to maintain strength under failure/deformation.
biomimicry  cancellous  bone  structure  microstructure  failure  crack  propagation  suppression  Delicious 
march 2016 by asteroza
A shape-anisotropic reflective polarizer in a stomatopod crustacean : Scientific Reports
Mantis shrimp have optical structures that manipulate light across the structure rather than by depth in conventional polarizers, allowing polarized optical communication.
shrimp  optical  communication  biomimicry  light  polarizer  structure  physics  materials  science  research  technology  biology  tuned  biophotonic  photonic  Delicious 
february 2016 by asteroza
High-strength bulk nano-crystalline silver prepared by selective leaching combined with spark plasma sintering
They seem to be up to steel strength now, but volume production is iffy. Military want thi for EFP slug plate as it's cheaper than tantalum but better than copper.
silver  high  trength  materials  science  research  technology  nanocrystalline  structure  Delicious  strength 
january 2016 by asteroza
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