Results 71 to 80 of about 335,848 (315)

Short Cantilever Rock Beam Structure and Mechanism of Gob-Side Entry Retaining Roof in Reuse Period

Shock and Vibration, 2020
In the reuse stage of a gob-side entry retaining, failure of the structure and stability of the main roof have a significant effect on the safety of the advanced support and ventilation space at the working face.
Jingke Wu, Yun Dong, Jiarui Chen, Chunlei Zhang, Wei Yin, JiHua Zhang, Yongzhen Cheng   +6 more
doaj   +1 more source

Vectorial structure of nonparaxial electromagnetic beams

Journal of the Optical Society of America A, 2001
A representation of the general solution of the Maxwell equations is proposed in terms of the plane-wave spectrum of the electromagnetic field. In this representation the electric field solution is written as a sum of two terms that are orthogonal to each other at the far field: One is transverse to the propagation axis, and the magnetic field ...
R, Martínez-Herrero, P M, Mejías, S, Bosch, A, Carnicer   +3 more
openaire   +3 more sources

Damage detection in a free-free beam structure using reconstructed mode shape data: Numerical approach

, 2023
The purpose of this work is to localise and magnify the effects of cracks from numerically computed cracked beam mode shapes using reconstructed mode shape data. In general, detecting the presence of a crack solely by observing the vibration mode shape
Mqan, M.H.C., Parnon, Mohamad Afiq Amiruddin, Fawazi, Noor   +2 more
core  

Prediction of Surface Topography Parameters in Direct Laser Interference Patterning of Stainless Steel Using Infrared Monitoring and Convolutional Neural Networks

Advanced Engineering Materials, EarlyView.
This study presents an infrared monitoring approach for direct laser interference patterning (DLIP) combined with a convolutional neural network (CNN). Thermal emission data captured during structuring are used to predict surface topography parameters.
Lukas Olawsky, Marcelo Sallese, Leander Kläber, Clemens Kuhn, Keming Du, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

The structure of shock waves as a test of Brenner's modifications to the Navier-Stokes equations [PDF]

, 2007
Brenner (Physica A, vol. 349, 2005a, b, pp. 11, 60) has recently proposed modifications to the Navier-Stokes equations that are based on theoretical arguments but supported only by experiments having a fairly limited range.
Reese, Jason M., Greenshields, Christopher, Greenshields, Christopher J.   +2 more
core   +1 more source

Variable Stiffness Flexure Structures Enabled by Phase‐Change Gallium and Adhesive Interfacial Locking for Soft Robotic Applications

Advanced Engineering Materials, EarlyView.
A flexure‐based variable stiffness structure is developed by integrating phase‐change modulation and adhesive interfacial locking of gallium. The design enables a wide stiffness variability, transitioning from soft, flexible behavior to rigid, load‐supporting performance.
Sungjin Kim, Sohee John Yoon, Yong‐Lae Park   +2 more
wiley   +1 more source

PLAL Nanoparticles yield enhancement through cylindrical lens beam shaping [PDF]

EPJ Web of Conferences
This study allows us to understand both the beam structure and the production of NPs in pulsed laser ablation in liquids (PLAL) by modifying the spatial structure of the Gaussian beam.
Molina-Prados Sergio, Lancis Jesús, Mínguez-Vega Gladys   +2 more
doaj   +1 more source

Response of Composite Beam Structure under Unbalanced Excitation of Rice Threshing System

Shock and Vibration, 2022
This paper studies the dynamic response of the support beam under the unbalanced excitation of the rice threshing system. The differential equation of motion of the supporting beam under the action of harmonic force is established by the modal ...
Xujun Zhai, Xingqin You, Hao Zhang, Zhong Tang, Xinzhong Wang, Guoqiang Wang   +5 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

An anisotropic lattice Boltzmann - phase field model for dendrite growth and movement in rapid solidification of binary alloys

npj Computational Materials
A model coupling the lattice Boltzmann and the phase field methods with anisotropic effects is proposed, which is used to numerically describe the growth and movement of dendrites in rapid solidification of alloys.
Shilin Mao, Yuting Cao, Wei Chen, Dongke Sun   +3 more
doaj   +1 more source