DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 이정철 | - |
dc.contributor.author | Ben Fredj, Nada | - |
dc.contributor.author | 벤프래즈네다 | - |
dc.date.accessioned | 2024-07-30T19:30:22Z | - |
dc.date.available | 2024-07-30T19:30:22Z | - |
dc.date.issued | 2024 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=1095871&flag=dissertation | en_US |
dc.identifier.uri | http://hdl.handle.net/10203/321283 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 기계공학과, 2024.2,[iv, 35 p. :] | - |
dc.description.abstract | Emerging within the field of advanced additive manufacturing, 4D printing of thermal-responsive systems introduces dynamic transformations to printed products when subjected to thermal stimuli. However, these systems exhibit comparatively sluggish actuation speeds due to the gradual nature of thermal variations. This study addresses this limitation by introducing an approach centred on a sequential stimulus mechanism. By integrating an electro-active mechanism fueled by thermoelectric energy harnessed from the Seebeck effect, the proposed system holds the potential to substantially enhance actuation speed within thermal-responsive domains to 2 sec with actuators of 1mm cross-section. To validate this concept, a custom ink-jet printing setup with distinct nozzles was constructed, and initial ink rheology testing and simulations were conducted. The minimum pressure needed to achieve the shear-thinning behaviour required for printing, as well as the time frame in which the ink is printable, were also defined. The research also focuses on presenting the working principles and establishing configurations and precautions needed when direct ink printing shear-thinning inks such as the printing bed material. It also proposes preliminary work for the automatization of the printing process, especially concerning pressure control. | - |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | 4D 프린팅▼a열 반응성▼a전기 민감성▼a동축 압출▼a직접 잉크 작성▼a전단박화 잉크 | - |
dc.subject | 4D printing▼aThermal-responsive▼aElectro-sensitive▼aCoaxial extrusion▼aDirect ink writing▼aShear-thinning ink | - |
dc.title | Coaxial extrusion processes: Experimental effort toward 4d printed dielectric soft actuators | - |
dc.title.alternative | 동축 압출 공정: 실험 기반 유전체 소프트 엑추에이터의 4D 프린팅 연구 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 325007 | - |
dc.description.department | 한국과학기술원 :기계공학과, | - |
dc.contributor.alternativeauthor | Lee, Jung Chul | - |
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