标准摘要
[中文适用范围]： 本文件规定了采用实验测量的圆柱形纸芯和纸板芯在横向振动的自由模式下的固有频率测定弯曲模量的方法，该纸芯和纸板芯满足以下标准： ——内径：50mm至350mm； ——芯线最小长度：8 × 内径。 — 最小壁厚：注 0.02 × 内径或不小于 2.0 mm；关于通过三点法测定弯曲模量，请参见 ISO 11093-7。 [外文原描述]： 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.
英文名称Paper and board — Testing of cores — Part 8: Determination of natural frequency and flexural modulus by experimental modal analysis