| Titre : |
Innovative contact-free material testing method |
| Type de document : |
texte imprimé |
| Auteurs : |
Balthasar Fischer, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 28-31 |
| Langues : |
Multilingue (mul) |
| Catégories : |
Adhésion -- Défauts
Composites -- Défauts
Contrôle non destructif
Détection de défauts (Ingénierie)
Microphone optique
Soudures -- Défauts
|
| Index. décimale : |
668.3 Adhésifs et produits semblables |
| Résumé : |
In order to test composites, welds or adhesive joints for defects, non-destructive testing using ultrasound has been established in companies. The Austrian company Xarion has now developed a new type of optical microphone with which the measuring process can be carried out without contact. This significantly reduces the amount of testing required. |
| Note de contenu : |
- No loss of the test signal
- Inline and in-process monitoring possible
- No influence of measurement results by natural oscillation
- Testing of composites, adhesive bonds and spot welds
- Fig. 1 : The optical microphone Eta250 Ultra — a complete system consists of the signal processing unit, sensor head and optical fiber
- Fig. 2 : Sound measurement recorded with the optical microphone — valuable process signais are in high frequency ranges
- Fig. 3 : The compact sensor head of the optical microphone
- Fig. 4 : Usage of the optical microphone for tool condition monitoring : Acoustic fingerprint of an intact drill and a broken drill ; a clear distinction is possible only in high frequencies
- Fig. 5 : A composite material used in aircraft construction (right) and the ultrasound test image scanned with the optical microphone (left). Defects inside the material become visible. |
| En ligne : |
https://drive.google.com/file/d/1W5_3b2CsoG4WOowCYS4ncRhQn1QgCPcL/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32929 |
in ADHESION - ADHESIVES + SEALANTS > Vol. 16, N° 3/2019 (2019) . - p. 28-31
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