Results 31 to 40 of about 5,517 (250)
Study of fatigue crack initiation location of wheel and rail under rolling contact using finite element method [PDF]
MATEC Web of Conferences, 2018 The rail transit system is widely used for freight and passenger transportation. Due to the fact that its economic worthiness and high safety mode. Maintenance and damage prevention of wheel and rail are important factors affecting the safety of the ...
Jaifu Apichai +2 more
doaj +1 more source
Advanced Robotics Research, EarlyView.This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino +7 more
wiley +1 more source
Harmonization of rail profiles and wheel pair
Vestnik of the Railway Research Institute, 2016 The main difficulty of developing measures for complex evaluation of loading and increasing of resource of running gear parts performance is considering of differences of performance conditions of wheel-rail system. The article presents review of Russian and foreign experience on selection of shapes of carriage wheel profiles depending on the ...
Y. S. Romen, Y. P. Boronenko
openaire +2 more sources
Collision‐Resilient Winged Drones Enabled by Tensegrity Structures
Advanced Robotics Research, EarlyView.Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui +5 more
wiley +1 more source
Advanced Science, EarlyView.Multidimensional laser‐induced graphene (LIG) spanning from 0D to 3D architectures is comprehensively reviewed for multifunctional biomedical platforms, including biosensing, theranostics, and bioactive interface applications, which highlights its potentials for point‐of‐care diagnostics, wearable health monitoring, smart drug delivery, and tissue ...
Li Zhang +3 more
wiley +1 more source
A Review of Failure Modes and Safety Strategies of Lithium‐Ion Batteries from Materials to Systems
Advanced Science, EarlyView.A cascade‐aware framework is presented for lithium‐ion battery safety, linking thermal runaway initiation, acceleration, runaway reaction, and propagation with material‐, cell/pack‐, and system‐level interventions. By integrating failure mechanisms, quantitative safety indicators, and staged interception strategies, this review highlights how safer ...
Jin Hyeok Yang +8 more
wiley +1 more source
Advanced Energy Materials, EarlyView.A catalyst‐free solid‐state Li‐O2 battery achieves current‐driven four‐electron Li2O formation, delivering simultaneous high‐energy and high‐power operation with 1032 Wh·kg−1 and 374 W·kg−1 in a single cell. ABSTRACT Li‐O2 batteries offer a compelling pathway toward next‐generation energy storage owing to their ultrahigh theoretical energy density ...
Shu‐Ting Ko +9 more
wiley +1 more source
机车电传动, 2019 Rail wear, rolling contact fatigue and other diseases will reduce the rail life, increase maintenance costs and even threaten vehicle safety. In order to explore the impact of rail profile optimization on vehicle dynamic performance, 3 kinds of vehicle ...
Yiran LI +3 more
doaj
RESEARCH ON OPTIMIZATION OF HEAVY LOAD RAILWAY RAIL GRINDING PROFILE BASED ON ABRASION CONTROL
Jixie qiangdu, 2020 Wa-ri heavy load railway is taken as the research object in the paper,the rail profiles are observed before and after grinding. Based on the wheel/rail contact wear theory and the finite element model of high-speed wheel/rail steady rolling contact ...
YANG YiHang, LIU XueShen, LIU JiHua
doaj
An Accurate and Fast Method to Inspect Rail Wear Based on Revised Global Registration
IEEE Access, 2018 Rail wear inspection is vitally important in the railway industry. Conventional methods mainly use manual or static measurements to detect rail wear, which are inefficient, imprecise, and unreliable.
Yue Yang, Long Liu, Bing Yi, Feng Chen
doaj +1 more source