碩士 / 國立臺灣大學 / 工程科學及海洋工程學研究所 / 94 / Imaging using reflected light is imperfect when twists and wrinkles are present in the material surface. This phenomenon is called print-through phenomenon （PTP） in this investigation and the lines present on the material surface are called print-through lines. PTP reduces the beauty of a yacht. This investigation considers PTP to determine its cause for proposing the techniques to reduce PTP by elucidating the cause of PTP and the factors that influence it. This study seeks to define PTP. The surface of the material is scanned using a probe surface scanning machine and the average surface roughness （Ra） and the height of the surface profile （Rt） are used to determine the existence of PTP. Earlier studies and experimental observations indicate that PTP is related to the inner stress in the plastic matrix. The inner stress is caused by shrinkage of the plastic matrix during plastic hardening. To verify this opinion, qualitative analysis was performed, the origin of PTP is thus determined and improve PTP of yacht surface.
| Identifer | oai:union.ndltd.org:TW/094NTU05345009 |
| Date | January 2006 |
| Creators | Ren-Li Jiang, 江仁力 |
| Contributors | 林輝政 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 52 |
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