Results 31 to 40 of about 28,882 (305)

Piezoresistive Monitoring of Carbon Nanomaterial‐Reinforced Epoxy Composites Under Cyclic and Fatigue Loading: A Review

open access: yesAdvanced Engineering Materials, EarlyView.
Carbon nanomaterial‐reinforced epoxy composites exhibit pronounced piezoresistive behavior, enabling intrinsic damage sensing under cyclic and fatigue loading. This review critically compares carbon nanotube and graphene systems, correlating filler content, percolation threshold, and gauge factor with sensing stability and damage evolution.
J. M. Parente   +3 more
wiley   +1 more source

Study on time-varying meshing stiffness of helical gears with root crack faults based on improved potential energy method

open access: yesAdvances in Mechanical Engineering
Time-varying meshing stiffness is one of the important excitations of gear transmission system, and its accurate calculation is an important basis for gear dynamics research.
Hongyuan Zhang, Shuo Li, Hongyun Sun
doaj   +1 more source

Finite element based surface roughness study for ohmic contact of microswitches [PDF]

open access: yes, 2012
Finite element method (FEM) is used to model ohmic contact in microswitches. A determinist approach is adopted, including atomic force microscope (AFM) scanning real contact surfaces and generating rough surfaces with three-dimensional mesh.
Broue, Adrien   +4 more
core   +3 more sources

3D‐Printed Giant Magnetoresistive (GMR) Sensors Based on Self Compliant Springs

open access: yesAdvanced Engineering Materials, EarlyView.
This work explores 3D‐printed GMR sensors utilizing self‐compliant spring structures and conductive PLA composites. By optimizing arm width, we achieved high piezoresistive (0.34%/mm) and magnetoresistive (0.77%/mT) sensitivities. Demonstrated through Bluetooth‐integrated pressure and magnetic position sensing, these full printed low‐cost, customizable
Josu Fernández Maestu   +4 more
wiley   +1 more source

Research on Spur Gear Profile Modification Based on Stiffness of the Elastohydrodynamic Lubrication Friction Pair

open access: yesJixie chuandong, 2023
The influence of elastohydrodynamic lubrication (EHL) to the spur gear profile modification is considered for the first time, and a new method of spur gear profile modification is proposed using gear EHL friction pair meshing stiffness to replace gear ...
Xia Boqian, Zhang Yinghao, Zhang Zebin
doaj  

Research on Time-Varying Meshing Stiffness of Marine Beveloid Gear System

open access: yesMathematics, 2023
Beveloid gears have the advantages of compensating for axial error, providing smooth transmission, and eliminating turning error. Therefore, they are widely used in applications that require high transmission accuracy and stability.
Jianmin Wen   +3 more
doaj   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

open access: yesAdvanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm   +5 more
wiley   +1 more source

Research on Calculation Methods of Meshing Intervals of Cycloid Pin Gear Transmission

open access: yesJixie chuandong, 2023
In response to the problems of no suitable constraint conditions in the optimization process of tooth profile modification of cycloidal pin wheel transmission, difficulty in determining the modification amount of cycloidal gear tooth profile in reverse ...
Wu Zhenyu   +3 more
doaj  

Numerical implementation of the eXtended Finite Element Method for dynamic crack analysis [PDF]

open access: yes, 2008
A numerical implementation of the eXtended Finite Element Method (X-FEM) to analyze crack propagation in a structure under dynamic loading is presented in this paper.
Caperaa, Serge   +2 more
core   +2 more sources

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

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