Results 11 to 20 of about 478,260 (264)

Development of Multiaxial Creep Testing Machine for Miniature Specimen [PDF]

MATEC Web of Conferences, 2019
High temperature components such as boiler tube and jet engine turbine blade undergo multiaxial creep damage. Although multiaxial creep testing investigation is required for safety high temperature components designing, there are few commercial testing ...
Hiyoshi Noritake, Itoh Takamoto, Sakane Masao, Tsurui Takafumi, Tsurui Masaaki   +4 more
doaj   +1 more source

Experimental Study of the Influence of a Blowing Grid on Turbulent Jets Applied to Air Conditioning Systems [PDF]

Journal of Applied Fluid Mechanics
To overcome the challenges associated with homogenising the aerodynamic parameters of turbulent air jets, special attention must be given to the design of air jet distribution systems.
A. M. Maiga, A. Khelil, M. Braikia, M. Khelil, E. Belguebli, A. Fellague Chebra   +5 more
doaj   +1 more source

Vibration Characteristics of Rotor System with Loose Disc Caused by the Insufficient Interference Force

Chinese Journal of Mechanical Engineering, 2022
The rotating parts looseness is one of the common failures in rotating machinery. The current researches of looseness fault mainly focus on non-rotating components.
Zhinong Li, Fang Qiao, Wenxiu Lu, Jie Liu, Dong Wang, Fulei Chu   +5 more
doaj   +1 more source

Sensing Enhancement of Electromagnetically Induced Transparency Effect in Terahertz Metamaterial by Substrate Etching

Frontiers in Physics, 2021
A broad range of terahertz (THz) metamaterials have been developed for refractive index sensing. However, most of these metamaterials barely make sufficient use of the excited electric field which is crucial to achieve high sensitivity. Here, we proposed
Tingling Lin, Yi Huang, Shuncong Zhong, Shuncong Zhong, Manting Luo, Yujie Zhong, Yingjie Yu, Jian Ding   +7 more
doaj   +1 more source

Non-Destructive Evaluation of Hidden Defects Beneath the Multilayer Organic Protective Coatings Based on Terahertz Technology

Frontiers in Physics, 2021
An organic protective coating system plays an important role for the corrosion protection of offshore metallic structures. It is of practical importance to detect possible coating defects and evaluate coating performance for corrosion degradation ...
Wanli Tu, Shuncong Zhong, Manting Luo, Qiukun Zhang   +3 more
doaj   +1 more source

Surface Texture Measurement on Complex Geometry Using Dual-Scan Positioning Strategy

Applied Sciences, 2020
In this paper, a surface measurement method based on dual-scan positioning strategy is presented to address the challenges of irregular surface patterns and complex geometries. A confocal sensor with an internal scanning mechanism was used in this study.
Fang Cheng, Shaowei Fu, Ziran Chen
doaj   +1 more source

Characterization and Evaluation of Rotation Accuracy of Hydrostatic Spindle under the Influence of Unbalance

Shock and Vibration, 2020
The paper studies the characterization and evaluation technology of rotation accuracy of hydrostatic spindle under the influence of unbalance. The dynamic model of the motion error of the hydrostatic spindle is established based on the dynamic parameters.
Dongju Chen, You Zhao, Jingfang Liu
doaj   +1 more source

Cross-Contamination Identification of Additive Manufacturing Metal Powders Using Spatially Confined Particle-Flow LIBS and Machine Learning

Sensors
Laser-induced breakdown spectroscopy (LIBS) offers rapid, in situ, and multi-element detection, and therefore shows strong potential for quality monitoring of metal powders in additive manufacturing. However, direct LIBS analysis of flowing metal powders
Leiyi Ding, Dan Feng, Yinghao Wang, Mengjie Shan, Yuanbin Wang, Nan Ma   +5 more
doaj   +1 more source

Optimal Design of Angular Displacement Sensor with Shared Magnetic Field Based on the Magnetic Equivalent Loop Method

Sensors, 2019
Angular displacement sensor with shared magnetic field has strong environmental adaptability and high measurement accuracy. However, its 3-D structure is multi-pole double-layer structure, using time stepping finite element method (TSFEM) to optimize the
Pinggui Luo, Qifu Tang, Huan Jing
doaj   +1 more source

An Improved Nonlinear Cumulative Damage Model Considering the Influence of Load Sequence and Its Experimental Verification

Applied Sciences, 2021
According to the change characteristics in the toughness of the metal material during the fatigue damage process, the fatigue tests were carried out with the standard 18CrNiMo7-6 material.
Wei Wang, Jianmin Li, Jun Pan, Huanguo Chen, Wenhua Chen   +4 more
doaj   +1 more source