Historical
ISO 11093-8:1997
Paper and board -- Testing of cores -- Part 8: Determination of natural frequency and flexural modulus by experimental modal analysis
This part of ISO 11093 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.
Content Provider
International Organization for Standardization [iso]