Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Juan C. Briñez-de León"'
Publikováno v:
TecnoLógicas, Vol 0, Iss 0, Pp 695-707 (2013)
This work proposes an approach for mechanical behavior description in the plastic film deformation using techniques for the images analysis, which are based on the intensities evolution of fixed pixels applied to an images sequence acquired through p
Externí odkaz:
https://doaj.org/article/0352033a8c3f49ddab20d727f58987ee
Publikováno v:
Applied optics. 61(7)
Quantifying the stress field induced into a piece when it is loaded is important for engineering areas since it allows the possibility to characterize mechanical behaviors and fails caused by stress. For this task, digital photoelasticity has been hi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29251da5bd7ba951083c3ac4805bcc1d
https://pubmed.ncbi.nlm.nih.gov/35297828
https://pubmed.ncbi.nlm.nih.gov/35297828
Publikováno v:
Imaging and Applied Optics Congress 2022 (3D, AOA, COSI, ISA, pcAOP).
Digital photoelasticity requires demodulating stress fields, wrapped into color fringe patterns. As an alternative to traditional methods, deep convolutional neural networks are trained to recover stress maps from isochromatic images related to diffe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::872b80826a272f9662df22040895c94c
https://doi.org/10.1364/3d.2022.jw2a.6
https://doi.org/10.1364/3d.2022.jw2a.6
Publikováno v:
Optics and Photonics for Information Processing XV.
To simplify the implementation of photoelasticity studies, the recently introduced Thermal Transient Stepping (TTS) method produces a stress field, from images with fringe displacements induced by temperature. These images are acquired without using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7b7e0c29cec84d4ca1c1383c220fdc2
https://doi.org/10.1117/12.2594374
https://doi.org/10.1117/12.2594374
Autor:
Jhonatan Rendón Arango, Juan C. Briñez de León, Alejandro Restrepo Martínez, Hermes A. Fandiño Toro
Publikováno v:
Optics and Photonics for Information Processing XV.
Evaluation of residual and thermal stresses using temporal analysis of color in photoelasticity images was applied to three discs with residual stresses in different zones. The stress field generated by a compressive load is deformed under residual s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1847a87fbc254ba59097ca58c900f6ce
https://doi.org/10.1117/12.2594518
https://doi.org/10.1117/12.2594518
Publikováno v:
Optics and Photonics for Information Processing XV.
Digital photoelasticity is used for evaluating the stress in loaded bodies. However, when dynamic analyses are needed, the motions of optical elements are an experimental challenge. This new computational hybrid approach calculates the stress field b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcb6a906416e1f58aa2b1ebec76e6c25
https://doi.org/10.1117/12.2594296
https://doi.org/10.1117/12.2594296
Publikováno v:
Optics and Lasers in Engineering. 122:195-208
Digital photoelasticity often evaluates the stress fields in loaded structures by processing the colour intensities recorded in digital images. This makes the evaluation process sensitive to the accuracy of the colours recorded by cameras. This paper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b602320f691c7636adafead941c8a05
https://doi.org/10.1016/j.optlaseng.2019.06.004
https://doi.org/10.1016/j.optlaseng.2019.06.004
Autor:
Hermes Fandiño-Toro, Juan C. Briñez de León, María Torres-Madroñero, Alejandro Restrepo-Martínez
Publikováno v:
OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP).
A limitation for developing real-time stress evaluation in digital photoelas- ticity relies on the multiple acquisitions required and complicated algorithms for fringe demodulation. This paper proposes a hyper-spectral imaging system as a solution of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::570fef12fdcc5d45e979a54d6050ae45
https://doi.org/10.1364/isa.2021.iw6d.6
https://doi.org/10.1364/isa.2021.iw6d.6
Autor:
Jhonatan Rendón-Arango, Juan C. Briñez de León, Alejandro Restrepo-Martínez, Hermes Fandiño-Toro
Publikováno v:
Optics and Photonics for Information Processing XIV.
A thermal approach for measuring the stress field was developed by using digital photoelasticity. The approach relies on applying a thermal stimulation to the examined model, in conjunction with a computational hybrid algorithm of load stepping, to d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1d757a83684d7c83544cd9cf5723c2e
https://doi.org/10.1117/12.2568751
https://doi.org/10.1117/12.2568751
Publikováno v:
Optics and Photonics for Information Processing XIV.
For avoiding fails in loaded structures, adjust their geometry, removing material, or quantify residual stresses, photoelasticity studies often is limited by complex experiments, excessive computational procedures, expert supervision, narrow applicat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91dbd686688e60f9af4ea1f6aff83076
https://doi.org/10.1117/12.2568630
https://doi.org/10.1117/12.2568630