diplomsko delo Visokošolskega strokovnega študijskega programa I. stopnje Strojništvo
Abstract
Aktuatorji, ki za gibanje izkoriščajo toploto, se imenujejo termični aktuatorji in se zelo pogosto uporabljajo kot zaščita pred pregrevanjem. Najbolj pogosta oblika le-teh so bimetali, pri katerih pa se obrestuje le masovna izdelava. Zato je smiselno zasnovati termični aktuator, ki ga lahko izdelamo z enostavnim procesom in v manjših serijah. V delu predstavljamo 3D tisk upogibnega termičnega aktuatorja iz komercialno dostopnih materialov. Uporabili smo tehnologijo ekstruzije polimernega filamenta, pri čemer smo najprej preučili temperaturne koeficiente dolžinskega raztezka za različne materiale. Koeficiente smo pridobili z meritvami raztezkov na 3D natisnjenih vzorcih. V nadaljevanju smo s pomočjo dobljenih koeficientov zasnovali upogibne termične aktuatorje, na katerih smo opravili meritve odklona. Pri meritvah temperaturnega koeficienta dolžinskega raztezka smo ugotovili, da je pomembna predvsem smer tiska vzorcev. Z upogibnim termičnim aktuatorjem aktivne dolžine 35 mm smo dosegli odklon 2.5 mm.
Keywords
diplomske naloge;termični aktuatorji;3D tisk;ekskurzija polimernega filamenta;anizotropija;temperaturno raztezanje;koeficienti;dolžinski raztezniki;upogibni termični aktuatorji;
Data
Language: |
Slovenian |
Year of publishing: |
2022 |
Typology: |
2.11 - Undergraduate Thesis |
Organization: |
UL FS - Faculty of Mechanical Engineering |
Publisher: |
[J. Lisec] |
UDC: |
004.92(043.2) |
COBISS: |
120502787
|
Views: |
27 |
Downloads: |
8 |
Average score: |
0 (0 votes) |
Metadata: |
|
Other data
Secondary language: |
English |
Secondary title: |
Thermomechanic characterization of 3D printed samples |
Secondary abstract: |
Actuators that base on thermal expansion are called thermal actuators and are very often used as protection against overheating. The most common form of these are bimetals, which are only profitable at mass production. Therefore, it makes sense to design a thermal actuator that can be produced with a simple process and in small series. In this work, we present a 3D print of a bendable thermal actuator from commercially available materials. We used fused filament fabrication technology, at which we first studied the thermal coefficients of longitudinal expansion for different materials. The coefficients were obtained by measuring expansion of 3D printed samples. In the following, with the help of the obtained coefficients, we designed bendable thermal actuators, on which we performed deflection measurements. When measuring the thermal coefficient of longitudinal expansion, we found out that the printing direction of the samples is important. With a bendable thermal actuator which has an active length of 35 mm, we achieved a deflection of 2.5 mm. |
Secondary keywords: |
thesis;3D printing;thermal actuators;fused filament fabrication;anisotropy;thermal expansion; |
Type (COBISS): |
Bachelor thesis/paper |
Study programme: |
0 |
Embargo end date (OpenAIRE): |
1970-01-01 |
Thesis comment: |
Univ. v Ljubljani, Fak. za strojništvo |
Pages: |
XXIV, 50 str. |
ID: |
16336521 |