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Normas DIN – AENOR
DIN ISO 11093-8:2018-05

DIN ISO 11093-8:2018-05

Paper and board - Testing of cores - Part 8: Determination of natural frequency and flexural modulus by experimental modal analysis (ISO 11093-8:2017); Text in German and English / Note: Date of issue 2018-04-13

Papier et carton - Essais des mandrins - Partie 8: Détermination de la fréquence propre et du module de flexion par analyse modale expérimentale (ISO 11093-8:2017); Texte en allemand et anglais / Attention: Date de parution 2018-04-13

Papier und Pappe - Prüfung von Wickelkernen aus Hülsenkarton - Teil 8: Bestimmung der Eigenfrequenz und des Elastizitätsmoduls durch experimentelle Schwingungsanalyse (ISO 11093-8:2017); Text Deutsch und Englisch / Achtung: Erscheinungsdatum 2018-04-13

Fecha Anulación:
2018-10 /Withdrawn
Equivalencias internacionales:

ISO 11093-8 (2017-06)

Relación con otras normas DIN:

Reemplazada por: DIN ISO 11093-8:2018-10

Resumen:
This document specifies a method for the determination of the flexural modulus by using experimentally measured natural frequencies in the free-free mode of transverse vibration of cylindrical paper and board cores, which meet the following criteria:- internal diameter: 50 mm to 350 mm;- minimum wall thickness: 0,02 x internal diameter or not less than 2,0 mm;minimum length of core: 8 x internal diameter.NOTE For the determination of the flexural modulus by the three-point method, see ISO 11093-7.
Keywords:
Board (paper), Cartons, Cores, Definitions, Determination, Experimentation, Flexural strength, Hubs of reels, Materials testing, Mathematical calculations, Mechanical testing, Modulus of elasticity, Natural frequency, Paper, Pulp, Testing, Vibration, Vibration testing
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