The analysis of factors affecting the shrinkage of recirculation filter

Abstract

Represents an analysis of factors affecting the shrinkage of recirculation filter for hard disk drive by studying two types of Filtrete in length and width directions per each type of filters. The study is done at cutting and welding process to get pieces of filter with the required size. An analysis started from selecting controllable factors from Cause-and-Effect diagram, and analysis of variance (ANOVA) in order to get factors that have significant influence on the shrinkage of recirculation filter. Then, the relationship of those factors was studied and the percent shrinkage in the format of multiple regression was determined in order to facilitate and reduce the period of making die. In addition, in calculation part of this study, the statistical software called "Minitab" was used. The study was based on hypothesis testing approach and the influent of factors. From the analysis, factors that have effect on the shrinkage of recirculation filter are edge seal, cutting edge of die, and amplitude of the energy input. However, in some condition of some material, there was also other factors, not covered in the scope of this study, which had more influence on the shrinkage of recirculation filter.