Results 61 to 70 of about 54,718 (284)

Non-adiabatic pumping in an oscillating-piston model

open access: yes, 2012
We consider the prototypical "piston pump" operating on a ring, where a circulating current is induced by means of an AC driving. This can be regarded as a generalized Fermi-Ulam model, incorporating a finite-height moving wall (piston) and non trivial ...
Castañeda A. Dittrich T. Sinuco G.   +7 more
core   +1 more source

The Promise of Solid Lubricants for a Sustainable Future

open access: yesAdvanced Materials, EarlyView.
Lubricants are vital for technology, saving energy and resources. The industry seeks sustainable solutions beyond fossil fuels. Solid lubricants offer extremely low friction and reduce environmental impact, especially in harsh conditions. Can these solids truly replace liquid lubricants, or are they limited to extreme applications?
Philipp G. Grützmacher   +7 more
wiley   +1 more source

Titanium alloy piston thermo-mechanical coupling simulation and multi-objective optimization design

open access: yesAdvances in Mechanical Engineering, 2022
To solve the problem between temperature and thermal stress of a titanium alloy piston, a multi-objective optimization method combined response surface methodology and experiment design is performed to calculate an optimal design of the titanium alloy ...
Bin Zheng, ShengYan Fu, JiLin Lei
doaj   +1 more source

A Mixed Lubrication Model of Piston Rings on Cylinder Liner Contacts Considering Temperature-Dependent Shear Thinning and Elastic–Plastic Contact

open access: yesLubricants, 2023
This work develops a numerical methodology for predicting the performance of an automotive piston ring system by considering contact and lubrication mechanics.
Nolan Ryan Chu   +3 more
doaj   +1 more source

Variable length strut with longitudinal compliance and locking capability [PDF]

open access: yes, 1985
A variable length strut device is illustrated for connecting two associated structures which includes an outer load bearing shell, a drive assembly, a length varying compliance assembly positioned by drive assembly, and a strut rod locking assembly.
Belew, R. R.
core   +1 more source

Polystyrene/TiO2 Composite Thin Films by Powder Aerosol Deposition: Film Morphology Control Through Powder Processing

open access: yesAdvanced Materials Interfaces, EarlyView.
It's all in the mix! By employing different homogenization strategies for preparing polystyrene/TiO2 polymer‐ceramic composite (PCC) powders, we tune the morphology of PCC films obtained by powder aerosol deposition, ranging from segregated multilayer‐like to finely blended composites.
Marc C. Thiel   +5 more
wiley   +1 more source

Surface Characterization of Cylinder Liner–Piston Ring Friction Pairs Under Different Temperature and Load by Power Spectral Density Method

open access: yesLubricants
Piston ring–cylinder liner is one of the most important friction pairs in internal combustion engines. The surfaces of the piston ring and the cylinder liner are affected by high temperature and high pressure, and the influence mechanism of temperature ...
Xiaori Liu   +3 more
doaj   +1 more source

PERANCANGAN ULANG PISTON MOBIL TOYOTA HARDTOP 6 SILINDER BAHAN BAKAR BENSIN 4200 CC [PDF]

open access: yes, 2008
Piston represent important component in motor burn of where motor burnheating power become mechanic energy by way of combustion of fuel. Whenheating power for combustion to become activator tanaga yielded outside from machine referred motor burn outside ...
Ardiyan, Dhani
core  

4D Bioprinted Self‐Folding Scaffolds Enhance Cartilage Formation in the Engineering of Trachea

open access: yesAdvanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
A bilayer self‐folding scaffold, triggerable by humidity, is fabricated via 4D bioprinting for trachea engineering. An analytical model is derived to predict its radius of curvature, enabling its scalability. Cartilage progenitor cells seeded on the scaffold perceive scaffold final curvature and react to it, by enhancing the upregulation of pro ...
Irene Chiesa   +4 more
wiley   +1 more source

Oil Film Thickness Measurements Combined with High Temperature Friction Investigations in a Simplified Piston-Ring Lubrication Test Rig

open access: yesTribology in Industry, 2019
The effect of lubricants properties in oil film thickness was evaluated and linked to performance limitations in view of cavitation appearance, its initia Ccapacitance tion and development.
P.S. Dellis
doaj   +1 more source

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