Results 31 to 40 of about 2,768 (153)

Stick-Slip Dynamics in a Granular Material With Varying Grain Angularity

open access: yesFrontiers in Physics, 2022
Experiments, simulations, and theoretical treatments of granular materials typically feature circular or elliptical grains. However, grains found in natural systems often have flat faces that introduce local rotational constraints; these rotational ...
Ryan Kozlowski   +4 more
doaj   +1 more source

Theoretical Basis for the Photoelastic Residual Stress Evaluation in Misaligned Cubic Crystals

open access: yesCrystals, 2023
Photoelasticity is a fast and powerful technique for internal stress detection and quality control in crystals; to fully exploit its possibilities, an appropriate theoretical analysis must be developed for different crystallographic structure and ...
Fabrizio Davì   +2 more
doaj   +1 more source

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

open access: yesChallenging 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   +6 more
doaj   +1 more source

Stress State in an Eccentric Elastic Ring Loaded Symmetrically by Concentrated Forces

open access: yesMathematics, 2022
The stress state from an eccentric ring made of an elastic material symmetrically loaded on the outer boundary by concentrated forces is deduced. The analytical results are obtained using the Airy stress function expressed in bipolar coordinates.
Stelian Alaci   +2 more
doaj   +1 more source

Use of an automatic device for the determination of mechanical properties on photoelastic samples of small dimensions [PDF]

open access: yesRevista Brasileira de Ensino de Física, 2020
Photoelastic materials and Photoelasticity have been very effective in the study of the effects of stress and strain in materials such as iron, steel, concrete, etc.
Felipe Maia Prado   +2 more
doaj   +1 more source

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

open access: yesApplied 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   +3 more
doaj   +1 more source

Determination of the stress and strain fields in porous structures by photoelasticity and digital image correlation techniques

open access: yesPolymer Testing, 2021
Quantitative visualization of the full-field stress and strain in porous structures is of significance to reveal the mechanism of the damage and failure of engineering materials. To quantitatively characterize the full-field stresses and strains, optical
Zhangyu Ren, Huimin Xie, Yang Ju
doaj   +1 more source

Elastik Sınırlar İçerisinde Oluşan Gerilmelerin Fotoelastisite Yöntemiyle Belirlenmesi

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi, 2014
Bu çalışmada, çelik çekme levhasında elastik sınırlar içerisinde oluşturulan eksenel çekme gerilmelerinin klasik gerilme formülleri ve fotoelastisite yöntemi ile belirlenmesi amaçlanmıştır. Deneylerde Fe37 kalite çelik levhalar kullanılmıştır.
Bekir Çevik
doaj   +2 more sources

Optic Axis Rotation and Bertin Surface Deformation in Lead Tungstate (PWO) and Other Tetragonal Crystals by Stress and Misalignment of Crystallographic Cells: A Theoretical Study

open access: yesCrystals
For tetragonal lead tungstate (PWO) and other tetragonal crystals, we study modifications of the Bertin surfaces induced by either the distortion of crystallographic cells, the applied plane stress, or cell misalignment with respect to the specimen faces.
Luigi Montalto   +2 more
doaj   +1 more source

Review of RGB photoelasticity [PDF]

open access: yes, 2015
Automatic methods of photoelasticity have had a significant progress with the development of automatic acquisition and image processing methods. This article concerns RGB photoelasticity, which allows the determination of the photoelastic retardation ...
PETRUCCI, Giovanni   +2 more
core   +1 more source

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