Published 1978
| Version v1
Report
Artificial defects detection and location during welding
Description
Welding control by acoustic emission allows defects detection as soon as they are created. Acoustic testing saves time and gives better quality assurance in the case of multiple pass welding of plates. A welded joint was performed on A533B steel plates 250 mm thick by submerged arc welding. Artificial defects were implanted to determine significative parameters of acoustic reception. In operating conditions a significant acoustic activity takes place only during welding as shown by preliminary tests. At the same time an important noise is created by the arc, scories cooling and metal solidification and cooling. These problems are solved by an original processing in time-space detecting and locating defects with a good approximation
Availability note (English)
MF available from INIS under the Report Number.Abstract (French)
L'emission acoustique appliquee au controle des operations de soudage permet de detecter les defauts des leur creation. Dans le cas du soudage multi-passes de toles de forte epaisseur, l'emission acoustique conduit a un gain de temps important et a une meilleure assurance de la qualite. Un joint soude a ete realise sur des toles d'acier A533B de 250 mm d'epaisseur par soudage multi-passes a l'arc submerge. Des defauts artificiels ont ete implantes en vue de determiner les parametres significatifs de leur ecoute acoustique. Cet essai preliminaire a montre que, dans les conditions operatoires, l'activite acoustique significative n'a lieu que pendant l'operation de soudage. Ceci impose de travailler en presence de l'important bruit parasite provoque par l'arc electrique et surtout les craquements au refroidissement du laitier et les contraintes de solidification et de refroidissement du metal. Ces problemes ont ete surmontes grace a un traitement original dans l'espace temps, qui a permis de detecter et localiser des defauts avec une bonne precisionAdditional details
Additional titles
- Original title (French)
- Detection et localisation de defauts artificiels pendant le soudage
- Augmented title (English)
- arc welding
Publishing Information
- Imprint Pagination
- vp.
- Report number
- CEA-CONF--4428
Conference
- Title
- Meeting of the European workgroup on acoustic emission.
- Dates
- 18 - 20 Oct 1978.
- Place
- Risley, UK.
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 10481772
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ACOUSTIC TESTING; CRACKS; DEFECTS; STEELS; SUBMERGED ARC WELDING
- Descriptors DEC
- ALLOYS; ARC WELDING; CARBON ADDITIONS; FABRICATION; IRON ALLOYS; IRON BASE ALLOYS; JOINING; MATERIALS TESTING; NONDESTRUCTIVE TESTING; TESTING; TRANSITION ELEMENT ALLOYS; WELDING