| Summary: | 碩士 === 朝陽科技大學 === 工業設計系 === 106 === Knowledge management is one of the most important management methods in modern times. Due to the trend of demanding creative innovation by clients,interdisciplinary skills have become a necessity in today’s industry. Designer is a job that requires knowledge in various disciplines. This study investigates in the field of ceramics, through interviews with ceramics artists regarding the question of contraction, to explore the knowledge of the craftman based on experience. In the production of ceramic products, the inevitable shrinkage of the clay on the thickness, length and width of the product can be estimated in advance to achieve effective control of product quality. These estimations are higly experience based and can also serves as a guildline to help the qulity control of the firing process, as well as cost manegment.
The main discussion investigates in whether the shrinkage is affected by the difference in length and width. It is further verified through the comparasion between stereo samples and plane samples. Clay plates are made for experienment; paired sample t- test is applied to analyze the contraction rate of plates with same length but different thickness, and ANOVA(Analysis of variance) is applied in the analysis testing the difference in contraction between different lengths and thicknesses.
The experiement shows, when the thickness is at 4.0mm and the length varies from 7.0cm-10 cm, the contraction have little difference. However, the length has a significant impact on shrinkage when the thickness is at 5mm. Between different sample groups, the contraction ratio has little difference between a 6mm and a 7mm thickness. It can be concluded once the thickness reaches 6mm; the impact on contraction is largely reduced. In the mean while, clay cup is used for stereo sample to compare with the plate sample. The comparison shows an average of a 12 % contraction rate on the plate sample and a 7% contraction rate on the clay cup. Thus, it can be concluded that the plane contraction is different from the steric contraction. This experiment shows that the main casue for the impact of contraction is the production method, followed by the clay materials, firing temperature, and firing time.
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