| 冲击式木材硬度计电子电路的研究 |
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| 引用本文： | 王瑛,王居荣.冲击式木材硬度计电子电路的研究[J].东北林业大学学报,1988(3). |
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| 作者姓名： | 王瑛 王居荣 |
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| 作者单位： | 东北林业大学
(王瑛)，东北林业大学(王居荣) |
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| 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。
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| 关 键 词： | 硬度计 恢复系数 逻辑电路 晶体振荡器 |
STUDY ON ELECTRIC CIRCUIT OF ACTION HARDOMETER |
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| Wang Ying Wang Ju rong.STUDY ON ELECTRIC CIRCUIT OF ACTION HARDOMETER[J].Journal of Northeast Forestry University,1988(3). |
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| Authors: | Wang Ying Wang Ju rong |
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| Institution: | Northeat Forestry University |
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| 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. |
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| Keywords: | Hardness Recovery coefficient Logic circuit Crystal oscillator |
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