Results 101 to 110 of about 2,115 (205)

LOSS FACTOR AND DYNAMIC YOUNG MODULUS DETERMINATION FOR COMPOSITE SANDWICH BARS REINFORCED WITH STEEL FABRIC [PDF]

Fiabilitate şi Durabilitate, 2015
In this paper I have build some composite sandwich bars. For these bars I have determined the dynamic response by recording their free vibrations. These bars have the core made of polypropylene honeycomb with upper and lower layers reinforced with ...
Cosmin-Mihai MIRIŢOIU
doaj  

High‐Order Janus Bound States in the Continuum Assisted by Unidirectional Guided Resonances

Nanophotonics, Volume 15, Issue 14, 27 July 2026.
A high‐order Janus bound state in the continuum, featuring a q = −3 vortex in the upward radiation channel and a q = +1 vortex in the downward channel, is realized in truncated‐cone photonic crystal slabs by merging unidirectional guided resonances with a symmetry‐protected BIC, enabling direction‐dependent control of topological light emission ...
Zengping Su, Jue Li, Haoye Qin, Wenjing Lv, Yongkang Wang, Wei Li, Linhan Lin, Bo Li, Qinghua Song   +8 more
wiley   +1 more source

Robust Bound States in the Continuum in Mirror‐Symmetric Terahertz Metasurfaces

Nanophotonics, Volume 15, Issue 14, 27 July 2026.
An ideal BIC, supported by local inversion symmetry in a mirror‐symmetric metasurface, transforms into a QBIC by introducing an asymmetry parameter α. This transition yields a finite Q‐factor following Q ∝ α−1.95, whereas the singular polarization state splits into two distinct circularly polarized points. This framework ensures robust BIC formation at
Die Zou, Zhen Zhou, Xia Cao, Rui Zhu, Keyu Tan, Zhiyong Wang, Xiaohua Xing, Jianquan Yao, Jianing Chen, Liang Wu   +9 more
wiley   +1 more source

TMD Damping for Structures with Uncertain Modal Parameters

Applied Sciences
The optimum tuning of the natural frequency and damping ratio of TMDs for structural modal parameters and various optimization criteria are well-known from the literature.
Felix Weber
doaj   +1 more source

Toward Automated Structural Design for Controlled Vibration Characteristics Using Topology Optimization and Computer Vision in Space Missions

Applied Sciences
This study explores the integration of computer vision with topology optimization for additive manufacturing, with a focus on maximizing eigenfrequency in a design domain.
Musaddiq Al Ali, Masatoshi Shimoda, Marc Naguib   +2 more
doaj   +1 more source

Detection of Defects in Glue Bonding of Cross-laminated Timber Using Experimental and Numerical Modal Analysis

BioResources
The preferred structural elements for taller timber buildings include cross-laminated timber (CLT), the performance of which significantly depends on the adhesive bond (AB) quality that may be influenced by manufacturing or factors within the service ...
Vaclav Sebera, Patrik Nop, Jan Zlámal, David Děcký, Marek Nociar   +4 more
doaj  

Exceptional point-enhanced piezoelectric thermometry via anti-parity-time symmetry. [PDF]

Microsyst Nanoeng
Wang J, Li J, Wu B, Huang X, Li W, Luo J, Yang M, Dong S, Xuan W.   +8 more
europepmc   +1 more source

Physics-informed neural network for predicting in vacuo vocal fold eigenmodes: A proof of concept study. [PDF]

JASA Express Lett
Al Khasawneh MEM, Döllinger M, Zhang Z.
europepmc   +1 more source

Quantifying sensor contribution in vibration-based structural health monitoring using explainable multichannel convolutional neural networks. [PDF]

Sci Rep
Dadoulis GI, Manolis GD.
europepmc   +1 more source

Critical point-based wireless sensors enabling tiny perturbation detection. [PDF]

Sci Adv
Ma C, Yin K, Zhang Z, Huang R, Huang Y, Gan L, Liu Y, Xia F, Xia T, Chen Y, Li W, Peng LM, Dong T, Hu Y.   +13 more
europepmc   +1 more source