【摘要】 材料肖氏硬度是以测量冲头的回跳高度为依据,实际的测量精度不易保证。本研究将测量高度改变为精确测定冲头回跳时间间隔,制成冲击式木材硬度计。可以在现场测定木材硬度。更多还原

【Abstract】 The shore hardness of materials is based on the rebound height of measuring punch pin, in practices the precision can not easily be ensured. Here we use the rebound interval of punch pin instead of height to made of hardometer which can measure the hardness of wood in spot.更多还原