Aktívna norma | Vydaná: 22.05.2026

ISO/ASTM TR 52958:2026

Additive manufacturing of metals — Powder bed fusion (PBF) — In-situ coaxial photodiode monitoring for lack of fusion flaw detection in PBF-LB
(Fabrication additive de métaux — Fusion sur lit de poudre — Surveillance par photodiode coaxiale in situ pour la détection de défauts de fusion en PBF-LB)

Dostupné jazyky: Anglicky

Dostupné prevedenie: Elektronické PDF, Tlačené

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Podrobné informácie

Označenie: ISO/ASTM TR 52958:2026

Dátum vydania: 22.05.2026

Stránok: 25

Krajina: Medzinárodná technická norma

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Anotácia

Description / Abstract: This document provides a workflow comprising experimental procedures and flaw detection algorithms aimed at locating flaws in parts produced during the powder bed fusion-laser-based (PBF-LB) process of metals. It emphasizes the use of coaxial photodiode-based in-situ monitoring and statistical and clustering machine learning algorithms, particularly for detecting lack of fusion-induced flaws. The workflow delineates setting thresholds for statistical detection and determining the number of clusters for machine learning algorithms, utilizing intentional seeded flaws in parts. Validation procedures are provided through computed tomography scanner data. Hardware limitations and considerations for multi-laser processes are addressed, with attention to potential issues.

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