Impact. Visualization of Impact Force by Using Pressure Sensitive Paper.
Impact. Visualization of Impact Force by Using Pressure Sensitive Paper.
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影响。
DOI：
10.2472/jsms.47.20
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
K. Ogawa
中科院分区：
文献类型：
--
作者：
K. Ogawa
为了表征飞行外物对结构物撞击区域的损伤和变形，需要测量撞击区域内的作用力及其分布。在本实验中，尝试使用压敏纸“Presscale”来视觉地识别冲击力。采用分离式霍普金森压杆法研究了纸张在冲击载荷作用下的感度。据发现，即使对于持续时间为几百微秒的冲击载荷，压敏纸也会立即响应，而与准静态载荷相比，灵敏度显着降低。利用压力敏感纸进行了赫兹冲击试验，并对试验结果进行了讨论。
To characterize damage and deformation in an impacted area of structure caused by flying foreign objects, it is fundamentally needed to measure the acting force and its distribution over the area. In the present experiments, it was attempted to identify visually the impact force using the pressure sensitive paper ‘Prescale’. A split Hopkinson pressure bar method was used to evaluate the sensitivity of the paper under impact loading. It is found that the pressure sensitive paper instantaneously responds even for the impact loading of which duration is several hundred microseconds, while the sensitivity is significantly reduced when compared to the quasi-static loading. Hertzian impact tests were tried to visually evaluate pressure distributions using the pressure sensitive paper, and the experimental results were discussed.