ISO-11093-8 › Paper and board - Testing of cores - Part 8: Determination of natural frequency and flexural modulus by experimental modal analysis

ISO-11093-8 - 3RD EDITION - CURRENT
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ISO 11093-8:2017 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 × internal diameter or not less than 2,0 mm;

- minimum length of core:

8 × internal diameter.

NOTE For the determination of the flexural modulus by the three-point method, see ISO 11093‑7.

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Document Number

ISO 11093-8:2017

Revision Level

3RD EDITION

Status

Current

Publication Date

June 1, 2017

Committee Number

ISO/TC 6