Results 1 to 10 of about 832,948 (254)

Index to 1984 NASA Tech Briefs, volume 9, numbers 1-4 [PDF]

open access: yes, 1987
Short announcements of new technology derived from the R&D activities of NASA are presented. These briefs emphasize information considered likely to be transferrable across industrial, regional, or disciplinary lines and are issued to encourage ...

core   +1 more source

Materials selection and design of microelectrothermal bimaterial actuators

open access: yes, 2007
A common form of MEMS actuator is a thermally actuated bimaterial, which is easy to fabricate by surface micromachining and permits out of plane actuation, which is otherwise difficult to achieve.
Prasanna, S., Spearing, S.M.
core   +1 more source

Galvanic corrosion behavior of AZ91D alloy / 45 steel couple under magnetic field

open access: yesJournal of Magnesium and Alloys
Galvanic corrosion behavior of AZ91D alloy / 45 steel couple in 3.5 wt.% NaCl solution under 0, 0.2 and 0.4 T magnetic field were studied by microstructure observation, immersion test and electrochemical measurement.
Xin Zhang   +6 more
doaj   +1 more source

Interfacial Stress Transfer in a Graphene Monolayer Nanocomposite

open access: yes, 2010
Graphene is one of the stiffest known materials, with a Young's modulus of 1 TPa, making it an ideal candidate for use as a reinforcement in high-performance composites.
Baughman   +29 more
core   +1 more source

Effects of rolling processing on the microstructures, mechanical properties and strain softening behavior of biodegradable Zn-0.06 Mg alloy

open access: yesJournal of Materials Research and Technology
Micro-alloyed Zn–Mg alloys have attracted extensive attention in the field of medical implant due to their excellent biosafety and moderate degradation rate.
Chengwei Ji   +6 more
doaj   +1 more source

Advanced methods for 3-D inelastic structural analysis for hot engine structures [PDF]

open access: yes
Three-dimensional Inelastic Analysis Methods are described. These methods were incorporated into a series of new computer codes embodying a progression of mathematical models (mechanics of materials, specialty finite element, boundary element) for ...
Chamis, C. C.
core   +1 more source

Constitutive Models Based on Compressible Plastic Flows [PDF]

open access: yes, 1983
The need for describing materials under time or cycle dependent loading conditions has been emphasized in recent years by several investigators. In response to the need, various constitutive models describing the nonlinear behavior of materials under ...
Rajendran, A. M.
core   +1 more source

3-D inelastic analysis methods for hot section components (base program) [PDF]

open access: yes
A 3-D inelastic analysis methods program consists of a series of computer codes embodying a progression of mathematical models (mechanics of materials, special finite element, boundary element) for streamlined analysis of combustor liners, turbine blades,
Bak, M. J.   +3 more
core   +1 more source

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