S1604-1-1 感圧塗料を用いた回転ディスク表面の時間平均圧力分布計測(ヘッド・ディスク・インターフェイス,社会変革を技術で廻す機械工学)

概要

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The PSP technique is a nonintrusive pressure measurement method based on the oxygen quenching of the luminescence of luminophore. Since the PSP measurement is generally affected by temperature changes, it is difficult to precisely measure the pressure on a surface with non-uniform temperature distribution. In this study, we focused on pyrene sulfonic acid (PySO_3H) as a luminophore of PSP. It is known that the PySO_3H has two peaks in the emission spectra which have opposite temperature-dependent properties. Temperature effects can be eliminated by measuring the luminescence at an appropriate wavelength band between these two peaks. We successfully obtained the time-averaged pressure distribution on the rotating disk by the use of PySO_3H. The pressure shows a concentric circle distribution and decreases toward the disk center at every rotational speed (10000-20000rpm). It is also found that the pressure difference between the inner and the outer region of the disk is proportional to the square of the disk angular velocity.
一般社団法人日本機械学会の論文
2010-09-04