표제지
목차
요약문 6
Abstract 7
제1장 서론 8
1-1. ER 유체의 정의 8
1-2. 연구배경 및 목적 8
제2장 ER 유체의 빙햄 특성 10
제3장 ER 유체 조성 및 실험장치 구성 16
3-1. ER 유체 조성 16
3-2. 실험장치 제작 및 실험방법 16
제4장 실험결과 및 고찰 24
4-1. ER 유체의 빙햄특성 실험결과 24
4-2. ER 유체의 응답특성 26
제5장 결론 39
참고문헌 41
Table 3-1. Boundary conditions for flow mode 21
Table 4-1. Yield stress of different ER fluids in flow mode 28
Table 4-2. Coefficient of Bingham model in flow mode 29
Figure 2-1. Micro structure model of general ER fluid 13
Figure 2-2. Operating modes of ER fluids 14
Figure 2-3. Bingham model of ER fluid 15
Figure 3-1. Experimental apparatus for the flow mode Bingham characteristics test 22
Figure 3-2. Velocity profile through annular electrodes gap for the Bingham fluid 23
Figure 4-1. Bingham characteristics of ERF-1 fluid (23℃, 1mm) 30
Figure 4-2. Bingham characteristics of ERF-2 fluid (23℃, 1mm) 31
Figure 4-3. Bingham characteristics with various shear rates in flow mode 32
Figure 4-4. Comparison of dynamic yield stress in flow mode between single and various shear rates measurement 33
Figure 4-5. Bingham characteristics of ER fluids in flow mode 34
Figure 4-6. Response time of ER fluid in flow mode 35
Figure 4-7. Response time of ERF-1 fluid in flow mode 36
Figure 4-8. Response time of ERF-2 fluid in flow mode 37
Figure 4-9. Comparison of response time with different ER fluid 38