Results 141 to 150 of about 401,667 (312)

Wear-out Failure Analysis of the Stainless Steel Hinge Joint in the Chain of Bucket Coal Elevator

open access: yesJixie chuandong, 2016
According to the observation and analysis of the hinge joint( friction pair) among pin,sleeve and roller in the chain of bucket coal elevator by means of scanning electron microscope,it shows that the wear mechanism of pin and sleeve is mainly abrasive ...
Zhu Guoren   +3 more
doaj  

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

open access: yesAdvanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero   +12 more
wiley   +1 more source

Improved mathematical model of the hydraulic drive of the garbage truck’s sealing plate mechanism taking into account the wear of its hydraulic cylinder

open access: yesПроблеми трибології
This article is dedicated to the improvement of the mathematical model of the hydraulic drive of the mechanism of the garbage truck’s sealing plate, taking into account the wear of the hydraulic cylinder.
O.V. Bereziuk   +3 more
doaj   +1 more source

Ferrographic and spectrographic analysis of oil sampled before and after failure of a jet engine [PDF]

open access: yes
An experimental gas turbine engine was destroyed as a result of the combustion of its titanium components. Several engine oil samples (before and after the failure) were analyzed with a Ferrograph as well as plasma, atomic absorption, and emission ...
Jones, W. R., Jr.
core   +1 more source

Локальне зношування твердих сплавів легованих нанокарбідом вольфраму при точінні [PDF]

open access: yes, 2015
The tool life and local wear mechanisms of titanium carbide based hard alloys alloyed with tungsten nanocarbide during finishing and semi- finishing operations of steels 20, 35, 40X cutting are researched in the paper. It is shown that the tool life of
Бодрова, Людмила Гордіївна   +2 more
core  

A cartilage-inspired lubrication system

open access: yes, 2014
Articular cartilage is an example of a highly efficacious water-based, natural lubrication system that is optimized to provide low friction and wear protection at both low and high loads and sliding velocities.
Anna Olszewska   +36 more
core   +1 more source

Magnetic Force Microscopy Signatures of Higher‐Order Skyrmions and Antiskyrmions

open access: yesAdvanced Functional Materials, EarlyView.
Magnetic force microscopy operated under vacuum conditions enables the qualitative identification of higher‐order skyrmions and antiskyrmions in Co/Ni multilayers at room temperature. Distinct stray‐field contrast signatures arise from vertical Bloch lines and complex domain‐wall configurations.
Sabri Koraltan   +8 more
wiley   +1 more source

Explant Analysis of Total Disc Replacement [PDF]

open access: yes, 2006
Explant analysis of human disc prostheses allow early evaluation of the host response to the prosthesis and the response of the prosthesis from the host. Furthermore, early predictions of failure and wear can be obtained.
Anderson, Paul A.   +2 more
core   +1 more source

Copper‐Based Crystalline‐Metallic Glass Composite Thin Films: A Novel Material with Enhanced Strength and Thermally Stable Nanotwins

open access: yesAdvanced Functional Materials, EarlyView.
A Cu‐based crystal‐glass composite with high‐density twins is identified by a fast screening technique using combinatorial sputtering together with XRD and nanoindentation mapping. This bamboo‐like structure demonstrates homogenous plastic flow and retains high strength during in situ high temperature tests, up to 1 GPa at 550°C, owing to those ...
Chunhua Tian   +10 more
wiley   +1 more source

RELIABILITY ANALYSIS OF MECHANISM OVER-CENTER LOCKING CONSIDERING WEAR AND CLEARANCE

open access: yesJixie qiangdu, 2015
Depending on the form of mechanism,the hinge wear and rod end bearing wear are considered respectively,and the self-lubricating rod end bearing wear model are established.Then the over-center locking reliability analysis model of four bar linkage ...
QIN Qiang   +3 more
doaj  

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