Paper and board - Testing of cores - Part 8: Determination of natural frequency and flexural modulus by experimental modal analysis (ISO 11093-8:1997)— 4 стр.
Paper and board - Testing of cores - Part 8: Determination of natural frequency and flexural modulus by experimental modal analysis (ISO 11093-8:2012 + Cor. 1:2012)— 13 стр.
Paper and board - Testing of cores - Part 8: Determination of natural frequency and flexural modulus by experimental modal analysis (ISO 11093-8:2012 + Cor. 1:2012)— 13 стр.