Response time scales of anodized-aluminum pressure-sensitive paints
Response time scales of anodized-aluminum pressure-sensitive paints
复制标题
DOI：
10.1016/j.sna.2013.04.040
复制
发表时间：
2013-09
影响因子：
4.6
通讯作者：
H. Sakaue;K. Morita;Y. Iijima;Y. Sakamura
中科院分区：
文献类型：
--
作者：
H. Sakaue;K. Morita;Y. Iijima;Y. Sakamura
通过测量阳极氧化铝压敏涂料的发光寿命和对阶跃压力变化的响应时间来表征其响应时间尺度。在大气条件下，用皮秒荧光测量系统测量了发光寿命。结果表明，12种aa - psp根据发光寿命可分为两类；一类包括具有有机发光团的aa - psp，另一类包括具有金属络合发光团的aa - psp。前者的寿命约为1纳秒，后者的寿命约为100纳秒。aa - psp还具有对激波管内产生的压力阶跃变化的响应时间的特征。结果表明，压力阶跃变化的90%的上升时间在10 μs量级，在30 ~ 50 μs范围内，在阳极氧化铝层制备过程中由于厚度不确定造成的容差范围内。发光寿命比阶跃响应时间短2-4个数量级。
The response time scales of anodized-aluminum pressure-sensitive paints (AA-PSPs) are characterized by measuring their luminescent lifetimes and response times to a step-like pressure change. The luminescent lifetime is measured by a picosecond fluorescence measurement system at atmospheric conditions. The results show that the twelve AA-PSPs tested fall into two groups according to their luminescent lifetimes; one group includes AA-PSPs with organic luminophores and the other one includes AA-PSPs with metal complex luminophores. The former possesses the lifetime on the order of one nanosecond and the latter possesses that on the order of hundred nanoseconds. The AA-PSPs are also characterized by the response time to a step change in pressure generated in a shock tube. It is observed that the 90% rise times to a step change in pressure are on the order of 10 μs and range from 30 μs to 50 μs, which lie within the tolerance caused by the thickness uncertainty in fabricating the anodized-aluminum layer. It is also found that the luminescent lifetimes are 2–4 orders of magnitude shorter than the step response times.