Masato Oki

3-dimensional graphic image representation of holographic microscopical displacement pattern by using cubic spline function

Abstract For quantitative measurement of microscopical displacement of an object surface due to thermal stress, the holographic pattern measuring system (HPMS) has been developed by the authors, which is combined both the techniques of holographic interferometry and graphic image processing. In this measuring sytem, a cubic spline function was applied to get the 3-dimensional graphic image patterns of the distribution of the displacement. The displacement is calculated from the interferometry fringe pattern, and the system was applied to deformation analysis of printed circuit board (PCB) due to thermal stress. The PCB deformation was expresed by 3-dimensional graphic image. A smooth curve could be obtained from rather less number of sampled data of interferometry fringe.

Simulation of luminous environment in interior with windows by personal-computer

Abstract Distributions of daylight factor in interior were calculated based upon the Mean Sky in several rooms with windows facing several orientations by using a simulation. The calculated daylight factor distributions were displayed on CRT. The orientations of windows and the shape of iso-daylight factor curves were examined by those kinds of figures. Daylight factor distributions in several rooms of actual dwelling house were measured and calculated at the same rooms, and the calculated and the measured daylight factors were compared and investigated. As the results of the investigation, it was cleared that the simulation was useful for an estimation of luminous environment in interior at design stage of the building under the conditions of various orientations of windows.