A thermomechanical sensor using photo-inscribed volume Bragg gratings
| Autor: | Maxime Royon, David Pietroy, Aurélien Saulot, Emmanuel Marin |
|---|---|
| Přispěvatelé: | Laboratoire Hubert Curien [Saint Etienne] (LHC), Institut d'Optique Graduate School (IOGS)-Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), ANR-11-IDEX-0007,Avenir L.S.E.,Surface & Interface Science & Engineering(2011), Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
PHOSFOS
Materials science Physics::Optics 02 engineering and technology Grating 01 natural sciences Thermal and strain sensors law.invention 010309 optics Stress (mechanics) [PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] Optics Fiber Bragg grating law 0103 physical sciences business.industry Mechanical Engineering Bragg gratings Surfaces and Interfaces 021001 nanoscience & nanotechnology Laser Surfaces Coatings and Films Femtosecond laser Mechanics of Materials [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic Optoelectronics Waveguide Photonics 0210 nano-technology business Ultrashort pulse Refractive index |
| Zdroj: | Tribology International Tribology International, Elsevier, 2017, 115, pp.417-423. ⟨10.1016/j.triboint.2017.06.005⟩ |
| ISSN: | 0301-679X |
| DOI: | 10.1016/j.triboint.2017.06.005⟩ |
| Popis: | International audience; To offset the lack of tools capable of efficiently monitoring local and dynamic contact conditions relating to stress and heat simultaneously, a sensor using a waveguide Bragg grating has been developed and tested thermomechanically. We demonstrate that temperature and strain measurements inside transparent materials can be performed by fabricating photonic sensors directly in the bulk of a material. To do this, temperature and strain sensing is performed using an optical system comprising an embedded ultrafast laser fabricated waveguide and a Bragg grating inscribed inside the bulk of a pure silica glass. An isotropic modification of the refractive index is first generated inside the material to fabricate a 10 μm-core cylindrical waveguide then an anisotropic modification generated by a scanning technique is used to inscribe the Bragg grating superposed on the waveguide. Three sensors were fabricated and characterized with periods of 1.07 μm, 1.60 μm and 2.14 μm. The results show that the Bragg grating waveguide sensor fabricated inside the bulk of a transparent material can perform both temperature and strain measurements with only one grating. This proof of concept sensor is so a promising tool that can help tribologists to access quantitatively to local contact data (around a few μm2 area and few μm below the contact surface, normal stress only in this example) and finally validate their models more quantitatively. To convert it into a fully efficient tool for tribologists, an extension of the sensor capability is under development, based on the same principles, to help measuring simultaneously tangential stress and temperature evolution in a contact under dynamic boundary conditions. |
| Databáze: | OpenAIRE |
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