Health Control Integrated with low material resources by diffuse elastic waves (Q3687811): Difference between revisions
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(Created claim: summary (P836): Structural Health Monitoring (SHM) involves loading sensors into a structure to continuously monitor the state of health. This applies in particular to the monitoring of critical structures such as bridges, buildings, aircraft, rails or automobiles. SHM methods very often use ultrasonics and in particular ultrasonic waves called “guided waves” which have the ability to propagate away from the sensors arranged on the structure. These waves inter...) |
(Changed label, description and/or aliases in en: translated_label) |
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Health Control Integrated with low material resources by diffuse elastic waves | |||
Revision as of 19:42, 18 November 2021
Project Q3687811 in France
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Health Control Integrated with low material resources by diffuse elastic waves |
Project Q3687811 in France |
Statements
98,825.0 Euro
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197,650.0 Euro
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50.0 percent
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1 October 2016
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30 September 2020
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Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
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Le Contrôle Santé Intégré (Structural Health Monitoring, SHM, en anglais) consiste à embarquer des capteurs dans une structure afin de suivre en continu son état de santé. Cela s’applique notamment pour la surveillance de structures critiques telles que des ponts, bâtiments, avions, rails ou automobiles. Les méthodes de SHM font très souvent appel aux ultrasons et notamment aux ondes ultrasonores appelée « ondes guidées » qui ont la capacité à se propager loin des capteurs disposés sur la structure. Ces ondes interagissent avec les défauts et portent l’information sur leur localisation et nocivité. Un nombre limité de capteurs peut ainsi contrôler de grandes surfaces tout en limitant la masse embarquée du système SHM et son intrusivité dans la structure. Les techniques SHM basées sur les ondes guidées classiques nécessitent une électronique complexe difficilement compatible avec les contraintes du SHM, tout en n'apportant des informations que sur une partie limitée de la structure. A l'inverse, l'exploitation des codas ultrasonores sondent la structure dans sa globalité et offrent un moyen original d'en extraire des propriétés utiles sur son état de santé. Les avantages attendus d'une telle technique passive sont : faible consommation d'énergie (pas d'émission ultrasonore), déploiement et installation facilités, limitation de l'électronique embarquée (circuits de réception uniquement, et non émission-réception). (French)
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Structural Health Monitoring (SHM) involves loading sensors into a structure to continuously monitor the state of health. This applies in particular to the monitoring of critical structures such as bridges, buildings, aircraft, rails or automobiles. SHM methods very often use ultrasonics and in particular ultrasonic waves called “guided waves” which have the ability to propagate away from the sensors arranged on the structure. These waves interact with defects and carry information on their location and harmfulness. A limited number of sensors can control large areas while limiting the embedded mass of the SHM system and its intrusivity in the structure. SHM techniques based on conventional guided waves require complex electronics that are difficult to match with the constraints of the SHM, while providing information on only a limited part of the structure. On the other hand, the exploitation of ultrasonic codas sound the structure as a whole and offer an original way of extracting useful properties on its state of health. The expected benefits of such a passive technique are: low energy consumption (no ultrasonic emission), easy deployment and installation, limitation of on-board electronics (reception circuits only, not emission-reception). (English)
18 November 2021
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Identifiers
NP0008493
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