Wang, Jian He, Jianfeng Li, Hang Fang, Kun
Published in
Frontiers in Materials
Transparent polymeric materials have gained significant popularity as replacements for glass in various industries due to their low cost, lightweight nature, and high processing efficiency. Injection molding is the primary method for producing transparent polymer parts. However, residual stress often poses a challenge, leading to various defects. T...
Solaguren-Beascoa Fernández, Manuel
Published in
Materials Testing
The disc under diametral compression is one of the preferred specimens for the calibration of photoelastic materials. Current calibration methods have some limitations from a metrological point of view, because they do not provide measurement uncertainties and they assume that observations are independent and with the same accuracy. In this work, a...
marín-miranda;, miriam
Complex stresses are created or applied as part of medical and dental treatments, which are linked to the achievement of treatment goals and favorable prognosis. Photoelasticity is an optical technique that can help observe and understand biomechanics, which is essential for planning, evaluation and treatment in health professions. The objective of...
he;, quanyan
Polyethylene terephthalate (PET) is one of the most commonly used substrate materials in the field of flexible electronics, and its stress-induced birefringence often has a detrimental effect on the optical properties of the device. Therefore, a deep and systematic understanding of the stress-optical properties of PET films is crucial for device de...
Kozlowski, Ryan Zheng, Hu Daniels, Karen E. Socolar, Joshua E. S.
Published in
Frontiers in Physics
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 constraints have been shown to affect, for example, the jamming transition, discontinuous shear thick...
Meyer, Jan Dickmann, Walter Kroker, Stefanie Gaedtke, Mika Dickmann, Johannes
Published in
Classical and Quantum Gravity
With a relative length measurement precision of better than 10−23, gravitational wave interferometers are the most precise instruments that have ever been built. With this enormous sensitivity many noise sources potentially effect gravitational wave detector sensitivity, each of which must be investigated to ensure confidence in design sensitivity....
da Costa Valente, Mariana Lima Macedo, Ana Paula Dos Reis, Andréa Cândido
Published in
The Journal of oral implantology
This study aimed to test and compare 2 novel dental mini-implant designs to support overdentures with a commercial model, regarding the stress distribution, by photoelastic analysis. Three different mini-implant designs (Ø 2.0 mm × 10 mm) were tested: G1-experimental threaded (design with threads and 3 longitudinal and equidistant self-cutting cham...
Yamakami, Shelyn Akari Gallas, Julia Adornes Petean, Igor Bassi Ferreira Souza-Gabriel, Aline Evangelista Sousa-Neto, Manoel Macedo, Ana Paula Palma-Dibb, Regina Guenka
Published in
Journal of endodontics
Structural defects created by endodontic treatment are the most common cause of major dental failures. This study analyzed levels of stress produced by endodontic instruments during the root canal treatment by photoelastic analysis of stress. Twenty-four human premolars were randomly divided into 4 groups (n = 6) according to instrumentation protoc...
Turusov, R. A.
Published in
Polymer Science, Series D
AbstractThe theory is proposed for solving problems of adhesion mechanics that is based on the concept of an anisotropic layer that serves as a contact between the adhesive and substrate. All boundary conditions in contact problems and the original equations are satisfied exactly; i.e., the mathematical Cauchy problem is solved. The possibilities o...
Stöhr, Markus Gerlach, Gerald Härtling, Thomas Schönfelder, Stephan
Photoelasticity offers a promising measurement tool for the in-line measurement of semiconductor materials such as silicon. Photoelasticity is a contactless, optical and full-field measurement method based on stress-induced birefringence. However, it is in principle only capable of measuring stress differences and therefore not able to determine th...
