替刃の切味について(第一報)

概要

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The forces required to cut cotton thread (No. 60) with several safety razor blades are measured. They change with the angle of inclination between thread and blade, and this functional relation is expressed by the following equation Aysinx+Bycosx=C where y denotes cutting force, x angle of inclination, A, B, C constants of thread and blade. Supposing that the cutting ability depends on the constants A, B their numerical values are calculated by the method of least squares applying the data in the above equation. It is found that the transverse cutting ability is worse than the longitudinal one.
茨城大学文理学部の論文