STUDI BAHAN WATERMARK UNTUK GERABAH KASONGAN MENGGUNAKAN RADIOGRAFI SINAR-X DIGITAL; STUDY ON WATERMARK MATERIALS FOR KASONGAN POTTERY USING DIGITAL X-RAY RADIOGRAPHY

NOER LAELLY BARORROH TAUFIK ABDUL GHOFUR, Gede Bayu Suparta

2015 | Disertasi | FMIPA

The study of watermark materials of Kasongan pottery using digital X-ray radiography technique had been conducted. Testing was carried out by comparing image/characteristic between the pottery watermarked after drainage and combustion processes. The watermark materials are paint, wood, wax, and tile grout unsanded. Parameters for watermark material analysis on a digital X-ray radiography were measured by calculating the coefficient (?), plot profile, and visual display. For the combusted pottery, watermark material has 0,3 cm-1 of absorption coefficient for paint and wood, 0,2 cm-1 for wax and tile grout unsanded. After drying, wood material has 0,1 cm-1 of absorption coefficient for 1 cm and 1,5 cm of thickness. Visual display of radiographic image shown clearly and unchanged in drainage or combustion processes. After drying, wax material has 0,7 cm-1 of absorption coefficient for 1 cm and 1,5 cm of thickness. The pottery got a good conditions, but radiographic image shown that watermark had been changed. After drying, tile grout unsanded material has 0,9 cm-1 of absorption coefficient for 1 cm of thickness and 0,8 cm-1 for 1,5 cm of thickness. Tile grout unsanded material had been deformed by clay of red earthenware. After drying, paint material has 0,9 cm-1 of absorption coefficient for 1 cm of thickness and 0,8 cm-1 for 1,5 cm of thickness. Paint had come from clay of red earthenware after combustion processes. The most appropriate materials for watermark necessity is wood.

Kata Kunci : N