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fluorescent penetrant inspection [1 record]

Record 1 1993-04-22

English

Subject field(s)
  • Destructive and Non-destructive Tests (Mat.)
  • Inspection for Defects (Materials Engineering)
  • Nonferrous Metals
CONT

In fluorescent penetrant inspection a fluorescent liquid is applied to the surface of the workpiece and enters the surface discontinuities. The excess penetrant is removed before the piece is examined under intense ultraviolet light. Indications of discontinuities show up brilliantly.

French

Domaine(s)
  • Contrôle destructif et non destructif (Matér.)
  • Détection des défauts des matériaux
  • Métaux non ferreux
CONT

Essai à grande sensibilité. Dans cette forme de l'essai [de ressuage], on accroît au maximum le contraste des ressuages avec le fond sur lequel ils apparaissent en ayant recours à un liquide d'imprégnation fluorescent. En lumière noire de Wood (lampes de 75 à 125 W), on arrive ainsi à voir les ressuages plus tôt et notamment, dans le cas des fissures les plus fines, avant que se produise, par étalement à la surface extérieure, un estompage excessif du spectre: d'où une augmentation de la sensibilité.

Spanish

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