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EN ISO 18249:2025

Non-destructive testing - Acoustic emission testing - Specific methodology and general evaluation criteria for testing of fibre-reinforced polymers (ISO 18249:2015)

Edition date: 2025-11-26
In Force
Available languages: French, English
Summary: ISO 18249:2015 describes the general principles of acoustic emission testing (AT) of materials, components, and structures made of fibre-reinforced polymers (FRP) with the aim of - materials characterization, - proof testing and manufacturing quality control, - retesting and in-service testing, and - health monitoring. This International Standard has been designed to describe specific methodology to assess the integrity of fibre-reinforced polymers (FRP), components, or structures or to identify critical zones of high damage accumulation or damage growth under load (e.g. suitable instrumentation, typical sensor arrangements, and location procedures). It also describes available, generally applicable evaluation criteria for AT of FRP and outlines procedures for establishing such evaluation criteria in case they are lacking. ISO 18249:2015 also presents formats for the presentation of acoustic emission test data that allows the application of qualitative evaluation criteria, both online during testing and by post-test analysis, and that simplify comparison of acoustic emission test results obtained from different test sites and organizations. NOTE The structural significance of the acoustic emission cannot in all cases definitely be assessed based on AT evaluation criteria only but can require further testing and assessment (e.g. with other non-destructive test methods or fracture mechanics calculations).

La présente Norme internationale décrit les principes généraux des essais d'émission acoustique (AT) des matériaux, composants et structures en polymères renforcés de fibres (PRF) dans le but de —     la caractérisation des matériaux, —     les essais de vérification et le contrôle de la qualité de la fabrication, —     les nouveaux essais et les essais en cours d'utilisation, et —     la surveillance de la santé. La présente Norme internationale a été conçue pour décrire une méthodologie spécifique permettant d'évaluer l'intégrité des polymères renforcés par des fibres (PRF), des composants ou des structures, ou d'identifier les zones critiques d'accumulation ou de croissance des dommages sous charge (par exemple, instrumentation appropriée, dispositions typiques des capteurs et procédures de localisation). Il décrit également les critères d'évaluation disponibles et généralement applicables pour l'AT des PRF et décrit les procédures pour établir de tels critères d'évaluation en cas d'absence. La présente Norme internationale présente également des formats de présentation des données d'essais d'émission acoustique qui permettent l'application de critères d'évaluation qualitatifs, à la fois en ligne pendant les essais et par analyse après les essais, et qui simplifient la comparaison des résultats d'essais d'émission acoustique obtenus sur différents sites d'essais et auprès de différents organismes. NOTE            L'importance structurelle de l'émission acoustique ne peut pas dans tous les cas être définitivement évaluée sur la base des seuls critères d'évaluation AT, mais peut nécessiter des essais et des évaluations supplémentaires (par exemple avec d'autres méthodes d'essais non destructifs ou des calculs de mécanique de la rupture).

Diese Internationale Norm beschreibt die allgemeinen Grundlagen für die Schallemissionsprüfung (AT) von Werkstoffen, Bauteilen und Konstruktionen aus faserverstärkten Polymeren (FRP) mit folgenden Zielen:  Charakterisierung der Werkstoffe;  Abnahmeprüfung und Kontrolle der Fertigungsqualität;  wiederkehrende Prüfung und Prüfung während des Betriebs; und  Überwachung der Schadensfreiheit. Diese Internationale Norm wurde erarbeitet, um eine spezifische Vorgehensweise zur Beurteilung der Unversehrtheit von faserverstärkten Polymeren (FRP), Bauteilen oder Konstruktionen zu beschreiben, oder kritische Bereiche zu identifizieren, in denen eine hohe Schadensakkumulation oder eine Ausbreitung von Schäden unter einer Belastung vorliegen (z. B. die geeigneten Messgeräte, typische Sensoranordnungen und Ortungsverfahren). Ferner beschreibt sie die verfügbaren und allgemein anwendbaren Bewertungskriterien für die Schallemissionsprüfung von FRP und skizziert für den Fall, dass diese nicht verfügbar sind, Verfahren zur Festlegung solcher Bewertungskriterien. Diese Internationale Norm legt auch Formate zur Präsentation von Schallemissionsprüfdaten dar, die sowohl online während der Prüfung als auch bei der Auswertung nach der Prüfung die Anwendung qualitativer Bewertungskriterien ermöglichen und die den Vergleich von Schallemissionsprüfergebnissen, die an unterschiedlichen Prüforten und von unterschiedlichen Prüfeinrichtungen ermittelt wurden, vereinfachen. ANMERKUNG Die strukturelle Signifikanz der Schallemission kann nicht in allen Fällen auf der Grundlage von AT-Bewertungskriterien allein zweifelsfrei beurteilt werden, sondern kann weitere Inspektionen und Bewertungen erforderlich machen (z. B. andere zerstörungsfreie Prüfverfahren oder bruchmechanische Berechnungen).
ICS: 19.100-Non-destructive testing
CTN: CEN/TC 138 - 6120

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