Results 41 to 50 of about 2,768 (153)

Research Progress of Stress Measurement Technologies for Optical Elements

open access: yesInternational 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   +4 more
doaj   +1 more source

UNWRAPPING ISOCHROMATIC BY COMBINING WHITE LIGHT PHOTOELASTICITY WITH PHASE SHIFTING THCHNOLOGY

open access: yesJixie qiangdu, 2016
Use of a color code to identify fringe orders has been in use in conventional photoelasticity. Phase shifting technology is the most widely used for isochromatic evaluation due to its simplicity and accuracy. The phase shifting method obtain isochromatic
LIU XiaoMeng, DAI ShuGuang
doaj  

Thermo‐Fluid‐Structural Coupling Analysis of Twin‐Screw Compressor Rotors Under Variable Operating Conditions

open access: yesApplied Research, Volume 5, Issue 5, October 2026.
A validated thermo‐fluid‐structural coupling framework reveals that rotor von Mises stress exhibits a non‐monotonic trend with discharge pressure, reaching a minimum at 0.3 MPa (3000 rpm)—identifying a structurally optimal operating point that minimizes mechanical loading and extends fatigue life.
Sen Zhao, Diankui Gao, Bin Zhao
wiley   +1 more source

Numerical and experimental research of the stress-strain state of detachable joints of rocket engines

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"
The paper investigates the stress-strain state of critical detachable joints (keyed and threaded) in solid-propellant rocket motors. The purpose of the research is to study the stress-strain state of critical components in rocket technology (using the ...
K. V. Krivun   +2 more
doaj   +1 more source

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

open access: yesGeohazard 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   +5 more
doaj   +1 more source

High‐Efficiency Acousto‐Optic Modulation on Non‐Suspended Thin‐Film Lithium Tantalate

open access: yesNanophotonics, Volume 15, Issue 17, 11 September 2026.
We demonstrate high‐efficiency acousto‐optic modulation on a non‐suspended thin‐film lithium tantalate (LTOI) platform. By engineering acoustic modes within high‐Q resonators, the devices achieve low half‐wave voltage‐length products. This work establishes LTOI as a robust, scalable solution for integrated microwave‐photonics, combining strong ...
Weiran Zhou   +13 more
wiley   +1 more source

Stress-Wave Propagation in the infinite plate and stress distribution on the Spur Gears Transmission by dynamic photoelasticity [PDF]

open access: yes, 1999
The aim of this paper is to present an original experimental approach of dynamics of solids and structures, considering dynamic application of photoelasticity.
Gourinat, Yves, Pramono, Agus Sigit
core  

Distorsion of Isochromatic Fringes in the Process of Stress Measurement in Structural Part by Photoelasticimetry

open access: yesJournal of Mechanical Engineering, 2018
In the article we show the possibility of distorting the results of the experiment by photoelasticity path, in case the isochromatic fringe patterns are recorded by the camera.
Frankovský Peter   +2 more
doaj   +1 more source

Rapid Quantitative Determination of Enantiomeric Excess by Vibrational Circular Dichroism Using Noise Based Spectral Selection

open access: yesChirality, Volume 38, Issue 9, September 2026.
Rapid VCD‐based determination of enantiomeric excess in limonene is achieved using signal‐to‐noise guided spectral selection and multivariate modeling. While 30‐min spectra provide high accuracy, 5‐min acquisitions retain ~97% performance, enabling faster throughput and offering a practical approach for rapid, reliable chiral analysis in applications ...
Amy M. Jackson   +2 more
wiley   +1 more source

The photoelasticity method in orthodontic research: a scope review [PDF]

open access: yesRGO: Revista Gaúcha de Odontologia
Objective To systematically map the research carried out in the area of Orthodontics with the application of the photoelasticity method Methods Studies reporting experiments that used the photoelasticity method as an instrument to assess stresses ...
Marcelo Piovesan Dessimoni   +5 more
doaj   +1 more source

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