Study on the pipe friction resistance in long-distance rock pipe jacking engineering
Underground Space, 2023 Previous studies on pipe friction resistance are mainly concentrated in the soil layer, whereas the study on that in the rock stratum is limited. To estimate the pipe friction resistance in the rock stratum, the calculation models of pipe friction ...
Peng Chen +8 more
doaj +3 more sources
Defence Technology, 2020 The contact resistance between the armature and rails is an important indicator of the contact characteristics in electromagnetic launches. As the contact resistance depends not only on the contact state but also on the contact stress and temperature ...
Chun-yan Zhu, Bao-ming Li
doaj +3 more sources
Coefficient of hydraulic resistance of capillary friction at low Reynolds numbers
Авіаційно-космічна техніка та технологія, 2023 Heat transfer pump circuits with liquid or two-phase heat transfer fluids are widely used in thermal management systems in both space and ground applications.
Oleh Selezen +2 more
doaj +2 more sources
Technological methods for improving the tribotechnical properties of materials of rail transport wheels [PDF]
E3S Web of Conferences, 2023 The paper presents the results of metallographic studies and tribotechnical tests of samples of grade 2 wheel steel in the form of bushings, the end surface of which was processed using turning and milling operations.
Biryukov Vladimir +2 more
doaj +1 more source
RESEARCH ON THE MECHANICAL BEHAVIOR OF SOME ALUMINUM-BASED ALLOYS [PDF]
European Journal of Materials Science and Engineering, 2021 The mechanical properties of Al-Si alloys have been investigated. Abrasion wear resistance is an important analysis being used in various applications so there are many laboratory testing methods to determine it.
Mirabela Georgiana MINCIUNĂ +1 more
doaj +1 more source
Effect of Sn Powder Content on Properties of Chromium-Free Zinc-Aluminum Coatings [PDF]
Cailiao Baohu, 2023 To further reduce the friction coefficient of zinc-aluminum coatings, tin (Sn) powder was introduced into waterborne chromium-free zinc-aluminum coatings.
LU Taiyu, GUO Raolong, LI Yanjun, FENG Zenghui, WANG Yang, LIU Lanxuan
doaj +1 more source
On the question of the smallest rolling resistance coefficient value of elastic wheel on a rigid horizontal surface [PDF]
E3S Web of Conferences, 2023 As is known, rolling resistance of an elastic wheel on a rigid support surface is determined by internal friction losses (hysteresis) in the wheel material and friction losses in the contact of wheel with support surface (friction losses in the hub ...
Mamaev Alexey +2 more
doaj +1 more source
Wear properties of graphene-reinforced aluminium metal matrix composite: A review
Reviews on Advanced Materials Science, 2023 The recent advancement in graphene-reinforced aluminium matrix composites improves wear behaviour in the production of lightweight and high-performance nanocomposites.
Wakhi Anuar Nur Farah Bazilah +5 more
doaj +1 more source
TRIBOLOGICAL BEHAVIOR OF EPOXY COMPOSITES FILLED BY CARBON NANO-PARTICLES [PDF]
Journal of the Egyptian Society of Tribology, 2018 In recent years we needed to new bearing materials, such as nanotechnologies, new developments are under progress and will certainly engage to engine friction reduction.
A. M. Samy
doaj +1 more source
A soft gripper with contamination resistance and large friction coefficient
Applied Physics A, 2022 AbstractWith the development of soft gripper systems, food processing, packaging, and processing technology has seen a significant advancement. The soft gripper must be protected from surface contamination and liquid lubrication; hence, a hydrophobic and contamination-resistant surface is used.
Zuodong Wang +6 more
openaire +2 more sources