DISCRIM cemented carbide 한국정밀공학회 PIEZO WC crater 소다라임유리 GC AMT 소다라임 Soda-lime zirconia Microneedle ZrO2 Vitreous Carbon PCD Silicon 실리콘 웨이퍼 Needle Microgrinding 실리콘 electrical discharge machining 2025 Silicon Wafer 춘계 PRESM2025 KSPE 춘계학술대회 정밀 정밀공학회 VC EDM AI LabVIEW international journal of advanced manufacturing technology Conference Characteristic IJAMT 포스터 학술대회 Materials & Design discharge crater elsevier Ceramic Soda Lime JKSPE JMST Soda-lime glass Autumn micro grinding micro 유리질 탄소 Bi-LSTM PRESM edge Lab on a Chip machining Glassy Carbon 2024 Journal of Mechanical Science and Technology 2018 유리질탄소