정밀공학회 Soda-lime Micro grinding Microgrinding 춘계 EDM PRESM GC 유리질 탄소 AMT Vitreous Carbon ZrO2 한국정밀공학회 WC Materials & Design Conference 2024 JKSPE VC micro PRESM2025 Autumn 2025 Characteristic Silicon edge DISCRIM Glassy Carbon cemented carbide 2018 학술대회 실리콘 웨이퍼 실리콘 춘계학술대회 Ceramic Silicon Wafer 포스터 Soda Lime zirconia IJAMT elsevier international journal of advanced manufacturing technology machining 유리질탄소 KSPE