板紙の圧縮強さの試験。リング状に巻いた板紙の試験片が圧壊するまで、一定の速度で荷重を加え、圧壊したときの最大荷重をリングクラッシュ強さとする。
板紙の圧縮強さの試験。リング状に巻いた板紙の試験片が圧壊するまで、一定の速度で荷重を加え、圧壊したときの最大荷重をリングクラッシュ強さとする。
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