Results 71 to 80 of about 233,397 (304)

Analytical and experimental spur gear tooth temperature as affected by operating variables [PDF]

open access: yes
A gear tooth temperature analysis was performed using a finite element method combined with a calculated heat input, calculated oil jet impingement depth, and estimated heat transfer coefficients.
Akin, L. S., Townsend, D. P.
core   +1 more source

Magnetic Droplet Manipulation on Open Surfaces

open access: yesAdvanced Materials Technologies, EarlyView.
Recent advances in the manipulation of magnetic droplets demonstrate various manipulations on open surfaces, including transport, splitting, merging, and force‐controlled motion, enabled by magnetic particles and external fields. ABSTRACT Manipulation of liquids on a smaller scale enables applications in various fields, particularly diagnostics and ...
Robab Jahangir, Vahid Nasirimarekani
wiley   +1 more source

The Enhancement of Oil Delivery and Bearing Performance via a Guiding-Structured Nozzle under Oil–Air Lubrication

open access: yesLubricants
The oil–air lubrication method is specifically employed for high or ultra-high-speed spindle rolling bearings. Under high-speed conditions, the air curtain formed inside the bearing cavity obstructs oil delivery, thereby limiting further increases in ...
Xintian Zi   +6 more
doaj   +1 more source

Study of Lubricant Jet Flow Phenomena in Spur Gears: Out of Mesh Condition [PDF]

open access: yes
Oil jet lubrication on the disengaging side of a gear mesh was analyzed. Results of the analysis were computerized and used to determine the oil jet impingement depth for several gear ratios and oil jet to pitch line velocity ratios.
Akin, L. S., Townsend, D. P.
core   +1 more source

Selective Reflection of Chiral Ferroelectric Nematic Liquid Crystals Tuned by Electric Field Along the Helix Axis

open access: yesAdvanced Optical Materials, EarlyView.
It is demonstrated that in chiral ferroelectric nematic liquid crystals sandwiched between electrically conducting transparent plates, the reflection color can be reversibly tuned by electric fields applied along the helix axis. The proposed theoretical model, assuming field‐induced coiling of the helix axis, accounts for all observations.
Md Sakhawat Hossain Himel   +5 more
wiley   +1 more source

Empirical equations and economical study for blending biofuel with petroleum jet fuel

open access: yesJournal of Advanced Research, 2018
Distillate of upgraded palm biodiesel was blended in different volume percentages (5, 10, 15, and 20%) with jet A-1. The mixture can be used as a replacement for petroleum Jet fuel.
M.I. ElGalad   +5 more
doaj   +1 more source

3D Printing of Soft Robotic Systems: Advances in Fabrication Strategies and Future Trends

open access: yesAdvanced Robotics Research, EarlyView.
Collectively, this review systematically examines 3D‐printed soft robotics, encompassing material selections, function integration, and manufacturing methodologies. Meanwhile, fabrication strategies are analyzed in order of increasing complexity, highlighting persistent challenges with proposed solutions.
Changjiang Liu   +5 more
wiley   +1 more source

Gear Lubrication and Cooling Experiment and Analysis [PDF]

open access: yes
A gear tooth temperature analysis was performed using a finite element method combined with a calculated heat input, a calculated oil jet impingement depth, and estimated heat transfer coefficients for the different parts of the gear tooth that are oil ...
Akin, L. S., Townsend, D. P.
core   +1 more source

Дослідження умов утилізації нафтових газів [PDF]

open access: yes, 2009
Досліджено характер утворення нафтових газів у газовому просторі нафтового резервуара протягом доби в літній та зимовий періоди експлуатації та визначено необхідні умови використання ежекційної системи для утилізації легких фракції нафтопродуктів ...
Паневник, О. В.
core  

Forage pétrolier assisté par jet Jet-Assisted Oil Drilling

open access: yesOil & Gas Science and Technology, 2006
La destruction des roches par jet est une technique qui présente un réel intérêt dans le domaine du forage pétrolier comme en témoignent les études déjà réalisées sur le sujet depuis une vingtaine d'années. Des essais sur chantier ont fait apparaître des améliorations substantielles en vitesse d'avancement grâce aux outils combinés mécaniques et jets ...
Bardin C., Cholet H.
openaire   +1 more source

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