Results 1 to 10 of about 150,415 (148)

Effect of Oxygen and Moisture on the Friction and Wear of Carbon Fiber-Reinforced Polymers

open access: yesLubricants, 2023
Carbon fiber-reinforced polytetrafluoroethylene (CF/PTFE) composites are frequently used in tribological dry gas applications, such as in dynamic seals in reciprocating hydrogen gas compressors and Stirling engines, due to their superior friction and ...
Pontus Johansson   +3 more
doaj   +1 more source

Vibration analysis of a cylindrical rotor containing liquid with stationary circumferential flow

open access: yesMechanical Engineering Journal, 2023
In a previous paper, a closed-loop mechanism represented by successive excitation processes was introduced to explain the reason for the nonlinearity-induced transition from unstable response to stable vibration.
Masahiko UTSUMI
doaj   +1 more source

Vibration analysis of liquid in an axisymmetric tank covered by a diaphragm

open access: yesMechanical Engineering Journal, 2022
The vibration of liquid in an axisymmetric tank covered by an elastic diaphragm is analyzed and an equivalent mechanical model for the coupled oscillation of the liquid and the diaphragm is developed.
Masahiko UTSUMI
doaj   +1 more source

Mechanisms behind the environmental sensitivity of carbon fiber reinforced polytetrafluoroethylene (PTFE)

open access: yesFriction, 2023
Carbon fiber reinforced polytetrafluoroethylene (CF/PTFE) composites are known for their exceptional tribological performance when sliding against steel or cast iron in inert gas environments.
P. Johansson   +3 more
doaj   +1 more source

Vibration analysis of cylindrical liquid storage tanks that considers excitation phase difference

open access: yesMechanical Engineering Journal, 2023
An investigation is described of the hydroelastically coupled motion of a cylindrical tank partially filled with liquid in response to travelling seismic wave excitation.
Masahiko UTSUMI
doaj   +1 more source

Vibration analysis of an elastic toroidal tank considering nonlinearity of sloshing

open access: yesMechanical Engineering Journal, 2021
The vibration of an elastic toroidal tank induced by nonlinear sloshing is analyzed. A computationally efficient semi-analytical method is presented for sloshing in a toroidal tank with circular meridional cross-section, for which it is customary to ...
Masahiko UTSUMI
doaj   +1 more source

Structural, thermal, and mechanical characterisation of PEEK-based composites in cryogenic temperature

open access: yesPolymer Testing, 2023
Thermal, thermo-mechanical and mechanical properties of four different commercially available polyetheretherketones (PEEK) based materials were investigated.
Maksim Nikonovich   +4 more
doaj   +1 more source

Effect of bearing types on performance of bearings for gear units of railway vehicles

open access: yesNihon Kikai Gakkai ronbunshu, 2022
Helical gears are commonly used in the gear units of railway vehicles in Japan, and the bearing types used for the gear units are tapered roller bearings.
Ken TAKAHASHI   +2 more
doaj   +1 more source

Pitting failure of helical gears induced by trochoidal interference and multidirectional, interacting wear

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2020
Improving gear mesh efficiency contributes to reducing the environmental impact of vehicles. This study examined the effect of adjusting gear specifications on improving mesh efficiency.
Koji KUMAGAI   +2 more
doaj   +1 more source

Rancang Bangun Alat Pemanas Induksi Proses Perlakuan Panas

open access: yesAccurate, 2020
The heat treatment process using the fuel system is very numerous and the heating time is quite long. The use of induction heaters, heat treatment can be done with a shorter time and less energy. The purpose of this research are; (1) Make a plan design, (
Ipung Kurniawan   +3 more
doaj   +1 more source

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