Results 41 to 50 of about 6,000 (220)

Photoelasticity as a Tool for Stress Analysis of Re-Entrant Auxetic Structures

Applied Sciences
The presented study illustrates the use of photoelasticity as an effective tool for validating the results of finite element method (FEM) simulations of auxetic structures.
Barbara Schürger, Miroslav Pástor, Peter Frankovský, Pavol Lengvarský   +3 more
doaj   +1 more source

Research Progress of Stress Measurement Technologies for Optical Elements

International Journal of Optics, 2021
It is of great significance to measure the residual stress distribution accurately for optical elements and evaluate its influence on the performance of optical instruments in optical imaging, aviation remote sensing, semiconductor manufacturing, and ...
Shan Wei, Yajun Pang, Zhenxu Bai, Yulei Wang, Zhiwei Lu   +4 more
doaj   +1 more source

Recent Advances of Slip Sensors for Smart Robotics

Advanced Materials Technologies, EarlyView.
This review summarizes recent progress in robotic slip sensors across mechanical, electrical, thermal, optical, magnetic, and acoustic mechanisms, offering a comprehensive reference for the selection of slip sensors in robotic applications. In addition, current challenges and emerging trends are identified to advance the development of robust, adaptive,
Xingyu Zhang, Liao Wu, Shuai He, Zhao Sha, Yuwan Huang, Shuying Wu, Dewei Chu, Chun H. Wang, Shuhua Peng   +8 more
wiley   +1 more source

Development of high-speed photoelasticity for visualization of shear stress field in pressure-sensitive gel

Nihon Kikai Gakkai ronbunshu
Present study aims to develop a high-speed photoelasticity with a high-speed polarization camera for evaluating the stress loading on a pressure-sensitive gel by fingertip movements. Prior to this, normal stress loading and phase retardation field on the
Masakazu MUTO, Kazuya U. KOBAYASHI, Seigo NISHIWAKI, Shinji TAMANO   +3 more
doaj   +1 more source

Development of a Mobile Device for the Evaluation of the Current in Situ Stress Condition in Glass

Challenging Glass Conference Proceedings, 2018
In present-day practice, monitoring the installation process and the utilisation of glass and hybrid components, e.g. glass/steel or glass/plastic, has become increasingly important. To date, the quality control options for built-in glass is limited.
Benjamin Schaaf, Björn Abeln, Carl Richter, Markus Feldmann, Marcus Glaser, Jörg Hildebrand, Jean Pierre Bergmann   +6 more
doaj   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

Observation of the shock wave propagation induced by a high-power laser irradiation into an epoxy material [PDF]

, 2013
The propagation of laser-induced shock waves in a transparent epoxy sample is investigated by optical shadowgraphy. The shock waves are generated by a focused laser (3 ns pulse duration—1.2 to 3.4TWcm−2) producing pressure from 44 to 98.9 GPa.
BERNIER, Jacky, BERTHE, Laurent, BOUSTIE, Michel, ESCAULT, Romain, LESCOUTE, Emilien, MERCIER, Patrick, SOLLIER, Arnaud, TOUCHARD, Fabienne   +7 more
core   +6 more sources

Application of artificial neural networks for stress state analysis based on the photoelastic method

Geohazard Mechanics, 2023
The present article proposes an evolutionary development of the photoelasticity method for measuring stresses based on annular photoelastic sensors application along with stress pattern recording with the aid of a digital camera and its recognition using
Anton Konurin, Neverov Sergey, Neverov Alexandr, Orlov Dmitry, Zharov Ivan, Konurina Maria   +5 more
doaj   +1 more source

Helix Alignment, Chevrons, and Edge Dislocations in Twist‐Bend Ferroelectric Nematics

Advanced Science, EarlyView.
The recently discovered twist‐bend ferroelectric nematic (NTBF) is the new member of the multiferroic family, representing a fluid with an oblique helicoidal (heliconical) periodic structure of spontaneous electric polarization. The work presents a thorough exploration of the material properties of this phase, how the periodic modulation of ...
Bijaya Basnet, Priyanka Kumari, Sathyanarayana Paladugu, Damian Pociecha, Jakub Karcz, Przemysław Kula, Nataša Vaupotič, Ewa Górecka, Oleg D Lavrentovich   +8 more
wiley   +1 more source

Direct Photocurrent Detection of Optical Vortex Based on the Orbital Photo Galvanic Effect: Progress, Challenge, and Perspective

Advanced Science, EarlyView.
Direct orbital angular momentum (OAM) detection through the orbital photogalvanic effect offers a scalable route for integrated optoelectronics. This perspective evaluates symmetry‐driven material selection and demonstrates how electrode matrices enable the resolution of complex, mixed OAM modes.
Jinluo Cheng, Dehong Yang, Weiming Wang, Chang Xu, Zipu Fan, Dong Sun   +5 more
wiley   +1 more source