| 학회 |
한국재료학회 |
| 학술대회 |
2017년 가을 (11/15 ~ 11/17, 경주 현대호텔) |
| 권호 |
23권 2호 |
| 발표분야 |
7. 생체재료 이용/모사 고성능/고부가 복합소재 심포지엄(High performance and value-added Biomaterial-mimic composite materia |
| 제목 |
Extended Analytic Model of Nacre Like Composite Structure and Experimental Verification by 3D Printing |
| 초록 |
The load transfer mechanism in the unique staggered platelet structure of nacre has been intensively analyzed and its structural features has been mimicked by various manufacturing methods such as 3D printing. However, due to the limited applicability of most analytical models and the limitations in the 3D printers, it has remains difficult to quantitatively predict and design the properties of nacre-inspired structures by 3D printers. In this study, we improve the analytic models to predict the effective elastic properties of the staggered platelet structure for a wide range of constituent materials’ elastic moduli and geometric parameters by carefully accounting for the volume average of elastic energy. We also systematically investigate the effect of the printing orientation and width on the 3D printed composite materials. We show that our improved analytic model accurately predict the properties of 3D printed composite when the manufacturing-condition-dependent material properties are used as input. Our studies reveal the origin of discrepancy between theory and 3D printed structures and enables a rational design of nacre-inspired structures. |
| 저자 |
김영수, 김용태, 유승화
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| 소속 |
한국과학기술원 기계공학과 |
| 키워드 |
Bio-inspired composite; nacre; staggered platelet; 3D printing
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| E-Mail |
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