Dissertations / Theses on the topic 'Smart material design'
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Akin, Tugce. "Communication Of Smart Materials: Bridging The Gap Between Material Innovation And Product Design." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610999/index.pdf.
Full textInformation Hierarchy for Smart Materials Communication for Industrial / Product Design&rsquo
. Industrial and product designers are invited to use the findings of the thesis to assist in developing a common smart materials language and culture, enriched by details, technicalities, opportunities, and creative and innovative material attributes. The study commences with the creation of a concise and compact reservoir of technical knowledge on smart materials and critically contrasts two established systems of classification for smart materials. Then, the subject of materials information appropriate to industrial design is discussed, highlighting channels through which smart materials information may be communicated at an optimum level so as to be amenable to exploitation by industrial designers. A sectoral analysis of smart materials use follows, including the presentation of factors that may hinder their more extensive exploitation in major industrial sectors. v The thesis concludes that smart materials have potential to initiate a breakthrough in the materials universe, and that industrial designers have a role in promoting smart materials knowledge, the capabilities of smart materials, and their innovation possibilities. It is recomended that since smart materials are a new generation of materials quite different from the conventional, they be promoted carefully through the proposed Information Hierarchy.
Tandler, Lynn. "The role of weaving in smart material systems." Thesis, Northumbria University, 2016. http://nrl.northumbria.ac.uk/31052/.
Full textZAHID, NAEEM MUHAMMAD, and SHAHNAWAZ MEHMOOD. "Applications of Ultra Smart Textiles in Sportswear and Garments." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-20172.
Full textProgram: Magisterutbildning i Applied Textile Management
Samson, Nadia. "Smart Plug – Optimization of design and material regarding environmental aspects : Mechanical design of an environmentally friendly Smart Plug." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-78957.
Full textBücker, Dennis. "Designing Applications for Smart Cities: A designerly approach to data analytics." Thesis, Malmö högskola, Fakulteten för kultur och samhälle (KS), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-23305.
Full textAndersson, Stina, and Klint Andrea Hultstrand. "A smart poster? Visual design of marketing material for an exhibition of the concept Smart City." Thesis, Linköpings universitet, Medie- och Informationsteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-121674.
Full textHeadings, Leon Mark. "Modeling, characterization, and design of smart material driven stick-slip actuation mechanisms." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1141700440.
Full textHelal, Alexander Tristan. "Material Characterization of a Dielectric Elastomer for the Design of a Linear Actuator." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36640.
Full textLuan, Jiyuan. "Design and Development of High-Frequency Switching Amplifiers Used for Smart Material Actuators With Current Mode Control." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36914.
Full textMaster of Science
Larson, John P. "Design of a Magnetostrictive-Hydraulic Actuator Considering Nonlinear System Dynamics and Fluid-Structure Coupling." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1402566309.
Full textPark, Jung-Kyu. "Advanced Development of a Smart Material Design, Modeling, and Selection Tool with an Emphasis on Liquid Crystal Elastomers." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354653154.
Full textCiftci, Cemalettin. "Design and implementatin of web based supply centers material request and tracking (SMART) system using with Java and Java servlets." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA391606.
Full textNeelakantan, Vijay. "Modeling, design, testing and control of a two-stage actuation mechanism using piezoelectric actuators for automotive applications." The Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=osu1127236489.
Full textNilsson, Linnéa. "Textile Influence : exploring the relationship between textiles and products in the design process." Doctoral thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-1058.
Full textPritchard, Joshua D. "Design, Fabrication, and Analysis of a Multi-Layer, Low-Density, Thermally-Invariant Smart Composite via Ultrasonic Additive Manufacturing." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1406284899.
Full textLagerkvist, Love. "Computation as Strange Material : Excursions into Critical Accidents." Thesis, Malmö universitet, Institutionen för konst, kultur och kommunikation (K3), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-43639.
Full textHosseinipour, Milad. "Design and Development of an Intra-Ventricular Assistive Device For End Stage Congestive Heart Failure Patients: Conceptual Design." University of Toledo / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1372726495.
Full textLedendal, Marie. "Chromatic chlorophyll : Conceptual hospital textiles with chromatic Smart Materials." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-19626.
Full textMsomi, Velaphi. "Modelling and testing smart aileron servo tabs : developing simulation tools for smart materials." Thesis, Cape Peninsula University of Technology, 2015. http://hdl.handle.net/20.500.11838/2150.
Full textThis dissertation addresses the development and the testing of a simulation tool to be used to predict the behaviour of smart material/structures. Along with the development of the simulation tool, a new form of the model describing the behaviour of shape-memory alloy was developed and implemented. The proposed model was developed based on the existing cosine model, conventionally used in literature, but it uses hyperbolic tangent functions. The hyperbolic tangent function was chosen so as to allow the simulation of any range of temperatures. Experiments were performed to obtain the parameters to be used in the simulation and to validate the numerical results. Two different simulations were performed: a one dimensional FEA analysis with a two dimensional orientation (NiTi SMA wire simulation) and a three dimensional FEA analysis (NiTi SMA plate) [Msomi and Oliver, 2015]. Alongside the FEA analysis, two experiments were performed with the purpose of obtaining the material parameters to be used in FEA analysis and to compare the FEA results to the experimental results.
Airbus Company
Toijanen, Annika. "LIST : Design för ett aktivitetsbaserat boende på mindre yta." Thesis, Konstfack, Industridesign, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-7737.
Full textVones, Katharina Bianca. "Towards the uncanny object : creating interactive craft with smart materials." Thesis, University of Dundee, 2017. https://discovery.dundee.ac.uk/en/studentTheses/2d9a7303-4fd7-4110-ae83-6438904108a5.
Full textBerglin, Lena. "Interactive Textile Structures : Creating Multifunctional Textiles based on Smart Materials." Doctoral thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-3490.
Full textPhilander, Oscar. "The development of a computational design tool for use in the design of SMA actuator systems." Thesis, Peninsula Technikon, 2004. http://hdl.handle.net/20.500.11838/1304.
Full textEngineers and Technologists have always been identified as those individuals that put into practice the theories developed by scientists and physicists to enhance the lives of human beings. In the same spirit as those that came before, this thesis describes the development of a computational engineering tool that will aid Engineers and Technologists to design smart or intelligent structures comprising of NiTi shape memory alloy rods for actuation purposes. The design of smart actuators consisting of NiTi shape memory alloy structural members will be beneficial to industries where light weight, compactness, reliability and failure tolerance is of utmost importance. This is mainly due to the unique material responses exhibited by this smart material. The shape memory effect, one of these material responses consists out of two stages: a low temperature load induced phase transformation causing a macroscopic deformation (either extension, contraction, etc.) also known as quasi-plasticity; and a high temperature phase transformation that erases the low temperature macroscopic deformation and reverts the material to some predefined geometry. When designing actuators consisting of this smart material, the quasi-plastic material response produces the actuation stroke while the high temperature phase transformation produces the actuation force. The successful engineering design of smart structures and devices particularly suited for applications where they operate in a capacity, as actuators harnessing the shape memory effect are dependent on a few important factors. These include the engineers familiarity with the type of smart material used, the availability of sound experimental data pertaining to the complex material responses exhibited by the smart material, the engineers level of proficiency with existing constitutive models available to simulates these material responses, and the engineers knowledge of simulation tools consisting of a suitable control algorithm fo~ the modeling of not only the device or structure itself but also the actuator involved in the design.
Biehlig, Ekaterina. "Design of Smart Polymeric Materials with Responsive / Adaptive Adhesion Properties." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-118293.
Full textGünther, Swen. "Innovative Smart Materials: Design meets Technology: Industry Research Project Week 2018." HTW Dresden, 2019. https://ul.qucosa.de/id/qucosa%3A35864.
Full textOates, William Sumner. "Piezoelecytric pump design and system dynamic model." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/17679.
Full textMicocci, Massimo. "Smart materials and metaphors to enhance technology adoption among older adults." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/15209.
Full textZiebro, Thomas R. "In vivo PPy(DBS) sensors to quantify excitability of cells via sodium fluctuations in extracellular solution." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1492031927557033.
Full textKwak, Seung-Keon. "New modeling and control design techniques for aircraft structural dynamics using smart materials /." The Ohio State University, 1999. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488188894442033.
Full textNguyen, Van Ky Quan. "PIEZOELECTRIC ACTUATOR DESIGN OPTIMISATION FOR SHAPE CONTROL OF SMART COMPOSITE PLATE STRUCTURES." University of Sydney. Aerospace, Mechanical and Mechatronic, 2005. http://hdl.handle.net/2123/652.
Full textLe, Dong D. Vaidyanathan Vijay Varadarajan. "Electrical resistivity as a measure of change of state in substrates design, development and validation of a microprocessor-based system /." [Denton, Tex.] : University of North Texas, 2009. http://digital.library.unt.edu/ark:/67531/metadc12149.
Full textAzimi, Mohsen. "Design of Structural Vibration Control Using Smart Materials and Devices for Earthquake-Resistant and Resilient Buildings." Thesis, North Dakota State University, 2017. https://hdl.handle.net/10365/28588.
Full textMoreno, Navarro Pablo. "Multiphysics formulation and multiscale finite element discretizations of thermo-electro-magneto-mechanic coupling for smart materials design." Thesis, Compiègne, 2019. http://www.theses.fr/2019COMP2525.
Full textNumerical algorithms based on the Finite Element Method will be specialized for Analysis, Design, and Optimization of Sensors and Actuators (S-A) and their Application to Smart Structures. The S-A based on tangible assets can couple several fields, such as mechanical, electrical, magnetic, and thermal. They are used in many applications, particularly in smart structures, damage monitoring, or aerodynamics. Despite the considerable experience in these studies, the steps addressed are first to develop a thermodynamically consistent formulation for macro-scale to introduce plasticity models; second, to provide the tools to take into account the heterogeneities of multi-scale models for smart materials. The main objective is the development of a research computer code to simulate and study the performance, not only of the S-A themselves but also of the smart structures in which these S-A will be mounted
Raimondo, Luna. "La stampa 4D e gli smart materials. Stato dell’arte e progettazione di un kit per scrittura Braille basato su fogli polimerici a memoria di forma." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Find full textPolo, Aguado Lorena. "Design of smart scaffolds for the treatment and prevention of bone infection." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/111824.
Full textThis thesis, entitled "Design of smart scaffolds for the treatment and prevention of bone infection", is focused on the development of smart organic-inorganic hybrid materials capable of perform controlled-delivery of drugs with biomedical purposes. In the first chapter, a general introduction about supramolecular chemistry, organic-inorganic hybrid materials and porous materials is given. The characterization and applications of porous materials are extensively explained, since those contents are highly related to the developing of this thesis. In the second chapter, three projects based on the design of gated devices are presented. In the first publication, two gated systems based on the use of a mesoporous silica material as an inorganic support, loaded and functionalised with organic molecules to achieve a controlled drug release are studied. The first molecular gate is composed by amino moieties and adenosine 5'-triphosphate (ATP), and the second one is composed by 3-(triethoxysilyl)propylisocyanate linked to ε-poly-L-lysine polymers. The two systems were characterized by solid state nuclear magnetic resonance (NMR) and Fourier transformed infrared spectroscopy (FTIR). The bioactivity capabilities of the materials were also studied. Then, both molecular gates have been implemented in loaded solids in order to demonstrate their controlled-release capabilities. In a first case, the mesoporous support was loaded with doxorubicin and capped with ATP molecules, and the system has been validated in a human osteosarcoma cell culture test. In a second case, the mesoporous support was loaded with levofloxacin and capped with the ε-poly-L-lysine molecular gates, and the system has been validated with E.coli bacteria. Once these two systems are described, a second project with the ATP molecular gates is presented. In this case, the mesoporous bioactive glass which acts as support has a composition of 80%SiO2-15%CaO-5%P2O5, and it has been loaded with levofloxacin with the purpose of killing bacteria. The solid has been characterized by corresponding techniques, and its bioactive properties have been studied. Finally, E.coli bacteria have been used to demonstrate that the solid is able to perform an antimicrobial activity only in the presence of acid phosphatase. The third project consists of a MCM-41 support loaded with a dye and capped with a peptide sequence. The trigger used in this case is the V8 protease, typical of the microorganism S. aureus. The system has been correspondingly characterized, and its drug release properties in vitro have been tested, demonstrating the efficiency of the design. In the third chapter, calcium phosphate microspheres and scaffolds have been functionalised with an essential-oil component derivative in order to achieve antibacterial properties. First, the vanillin-derivative has been synthesized and characterised, and in a second step, it has been attached to the surface of the calcium phosphate materials. Then, the antimicrobial properties of both materials have been tested against E.coli bacteria. Cytotoxicity assays with L929 fibroblast-like cells have been performed in order to demonstrate that the functionalized scaffolds did not perform a cytototxic effect. Finally, biocompatibility assays have been made with MG-63 human osteoblast-like cells, demonstrating that the functionalization of the scaffolds with vanillin do not affect their osteoregenerative properties. To sum up, it can be concluded that the results obtained in this thesis have contributed to the field of stimuli-responsive materials and antibacterial devices. The new designs could be key in the development of future applications in biotechology and biomedical research, particularly in bone infection and bone regeneration therapeutics.
La present tesi doctoral, titulada "Disseny de scaffolds intel·ligents per la prevenció i tractament de la infecció òssia", es centra en el desenvolupament de materials híbrids orgànic-inorgànics capaços de realitzar una lliberació controlada de fàrmacs amb propòsits biomèdics. En el primer capítol, es presenta una introducció general sobre química supramolecular, materials híbrids orgànic-inorgànics i materials porosos. També s'explica extensivament la caracterització i les aplicacions d'aquests materials, ja que estos continguts estan altament relacionats amb el desenvolupament d'aquesta tesi. En el segon capítol, es presenten tres projectes sobre el disseny de portes moleculars. En el primer, es mostren dos sistemes basats en l'ús d'un vidre mesoporós que actua com a suport inorgànic, carregat i funcionalitzat amb molècules orgàniques per a dur a terme una lliberació controlada de substàncies. La primera porta molecular està formada per amines i adenosín 5'-trifosfat (ATP), i la segona està formada per 3-(trimetoxisilil)propilisocianat unit a polímers de ε-poli-L-lisina. Els dos sistemes s'han caracteritzat per resonància magnètica nuclear en estat sòlid (RMN) i espectroscopia infrarroja per transformada de Fourier (FTIR). També s'han estudiat les propietats bioactives de ambdós materials. Després, ambdues portes moleculars han sigut implementades en sòlids carregats amb l'objectiu de demostrar que es pot realitzar una lliberació controlada de la càrrega. En el primer cas, el suport mesoporós s'ha carregat amb doxorrubicina, i el sistema s'ha validat in vitro amb cèl·lules humanes d'osteosarcoma (HOS). En el segon cas, el suport mesoporós s'ha carregat amb levofloxací i s'ha entapissat amb ε-poli-L-lisina; el sistema s'ha validat amb bacteris E.coli. Una volta descrits aquests sistemes, es presenta una segona publicació on també s'utilitza la porta molecular d'ATP. En aquest cas, el vidre mesoporós bioactiu que actua com a suport inorgànic té una composició de 80%SiO2-15%CaO-5%P2O5., y s'ha carregat amb levofloxací amb l'objectiu d'aconseguir propietats antibiòtiques. El sòlid s'ha caracteritzat mitjançant les tècniques corresponents, i s'han estudiat les seues propietats bioactives. Finalment, s'han utilitzat bacteris E.coli per demostrar que el sòlid posseïx activitat antibiòtica, i que és capaç de dur-la a terme solament en presència de fosfatasa àcida. El tercer projecte presentat consisteix en un suport de MCM-41 carregat amb un colorant i funcionalitzat amb una seqüència peptídica que actua com a porta molecular. L'estímul utilitzat en aquest cas és la proteasa V8, típica del microorganisme S. aureus. El sistema ha sigut corresponentment caracteritzat, i s'han testat les seues propietats de lliberació controlada de substàncies in vitro, demostrant l'eficàcia del disseny. En el tercer capítol, s'ha utilitzat un derivat d'un component d'olis essencials (vanil·lina) per funcionalitzar microesferes i scaffolds de fosfat de calci amb l'objectiu de dotar-los de propietats antibiòtiques. En primer lloc, s'ha sintetitzat y caracteritzat el compost derivat de la vanil·lina, i s'ha unit a la superfície dels materials de fosfat càlcic. Després, s'han estudiar les propietats antimicrobianes d'ambdós materials en presència de bacteris E.coli. S'han dut a terme assajos de citotoxicitat amb cèl·lules tipus fibroblast L929i assajos de biocompatibilitat amb cèl·lules humanes tipus-osteoblast MG-63, demostrant que les propietats osteoregeneratives dels materials originals no es veuen modificades després del procés de funcionalització. En resum, es pot concluir que els resultats obtinguts en aquesta tesi han contribuït al camp dels materials de lliberació control·lada i materials amb propietats antibacterianes. Els nous dissenys poden ser claus per al desenvolupament de futures aplicacions en la recerca biotecnològica i bi
Polo Aguado, L. (2018). Design of smart scaffolds for the treatment and prevention of bone infection [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/111824
TESIS
Neelakantan, Vijay Anand. "Modeling, design, testing and control of a two-stage actuation mechanism using piezoelectric actuators for automotive applications." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1127236489.
Full textTitle from first page of PDF file. Document formatted into pages; contains xvii, 213 p.; also includes graphics (some col.). Includes bibliographical references (p. 206-213). Available online via OhioLINK's ETD Center
Biehlig, Ekaterina [Verfasser], Manfred [Akademischer Betreuer] Stamm, and Costantino [Akademischer Betreuer] Creton. "Design of Smart Polymeric Materials with Responsive / Adaptive Adhesion Properties / Ekaterina Biehlig. Gutachter: Manfred Stamm ; Costantino Creton. Betreuer: Manfred Stamm." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://d-nb.info/1068153202/34.
Full textLe, Dong D. "Electrical resistivity as a measure of change of state in substrates: Design, development and validation of a microprocessor-based system." Thesis, University of North Texas, 2009. https://digital.library.unt.edu/ark:/67531/metadc12149/.
Full textHu, Jong Wan. "Seismic performance evaluations and analyses for composite moment frames with smart SMA PR-CFT connections." Diss., Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/22655.
Full textAlqalami, T. A. "The application of visualisation tools to enable architects to explore the dynamic characteristics of smart materials in a contemporary shanashil building design element for hot arid climates." Thesis, University of Salford, 2017. http://usir.salford.ac.uk/44452/.
Full textSpeicher, Matthew S. "Cyclic testing and assessment of shape memory alloy recentering systems." Diss., Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/33834.
Full textFarjoud, Alireza. "Physics-based Modeling Techniques for Analysis and Design of Advanced Suspension Systems with Experimental Validation." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/77354.
Full textPh. D.
Chung, Yik-sham Clive, and 鍾亦琛. "Design, synthesis, photophysics and self-assembly study of platinum (II) terpyridine complexes and their utilization as stimuli-responsive smart materials and probes for molecules and macromolecules of biological interest." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/208570.
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Chemistry
Doctoral
Doctor of Philosophy
Jian, Bingcong. "Origami-based design for 4D printing of deployable structures." Thesis, Bourgogne Franche-Comté, 2020. http://www.theses.fr/2020UBFCA029.
Full textDeployable structures can be deformed between the different configurations through predetermined mechanisms, showing the great potential in many engineering applications. However, their exquisite and intricate mechanisms also bring a great difficulty to the design of its structure. With the growing 4D printing efforts, its self-transforming characteristics under external stimuli provide new possibilities for deploying complex and challenging driving structures. Furthermore, origami-based engineering has provided tremendous technical support for structural conversion, especially from 2D to 3D states, leading to many design studies based on origami-inspired deployable structures. However, the complicated relationship between the deployable structure's geometry and the related materials and engineering parameters of 4D printing has not been thoroughly explored. Currently, the origami-based design methodology for 4D printing is still missing. In this research work, we focus on exploring the internal connections between the multiple abstraction levels over the overall product structure to the specific material allocation and geometric design to make the right design strategy aligned to a specific 4D printing technique. In short, this work intends to be a guideline for designing active deployable structures. To demonstrate this objective, we first introduced the basic information of 4D printing, origami-based design, and deployable structures. Then we analyzed and summarized their research status and existing difficulties. Secondly, we propose a systematic design framework for active structure design by 4D printing. Each step in the entire design process is then introduced in detail, especially the origami pattern design based on the "3D-2D-3D" strategy and the folding sequence planning and control. Finally, based on the existing knowledge, we apply this design process to the active deployable structure and provide some illustrative case studies
Wornyo, Edem. "Fabrication and characterization of shape memory polymers at small scales." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26714.
Full textCommittee Chair: Gall, Ken; Committee Chair: May, Gary S; Committee Member: Brand, Oliver; Committee Member: Degertekin, F Levent; Committee Member: Milor, Linda S. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Sossou, Comlan. "Une approche globale de la conception pour l'impression 4D." Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCA001/document.
Full textInvented in 1983, as a rapid prototyping process, additive manufacturing (AM) is nowadays considered as a manufacturing process almost in the same way as conventional processes. For example, parts obtained by AM are found in aircraft structures. This AM evolution is mainly due to the shape complexity allowed by the process. The driving forces behind this evolution include: the development of various techniques on the layer-wise manufacturing principle and the improvement both in quantity and quality of the range of materials that can be processed. Many other AM techniques and materials continue to emerge. In the wake of the AM (usually referred to as 3D printing) another mode of manufacturing did emerge: 4D printing (4DP). 4DP consists of exploring the smart materials (SM) – AM interaction. SMs are materials whose state changes according to a stimulus; this is the case, for example, with thermochromic materials whose color changes in response to heat or hydrogels which can shrink as a function of an aqueous medium’s pH or of light. The objects thus obtained have – in addition to an initial form (3D) – the capacity to shift state (according to the stimuli to which the SMs of which they are made are sensitive) hence the 4th dimension (time). 4DP is – rightly – the subject of intense research concerning the manufacturing aspect (exploration of new processes and materials, characterization, etc.). However, very little work is done to support the designers (who, in principle, are neither AM experts nor experts of SMs) to use it in their concepts. This new process-material interaction requires adapted models, methodologies and design tools. This PhD on design for 4D printing aims at filling this methodological gap. A design methodology for AM (DFAM) has been proposed. This methodology integrates the freedoms (shape, materials, etc.) and the constraints (support, resolution, etc.) peculiar to the AM and allows both the design of parts and assemblies. Particularly, freedom of form has been taken into account by allowing the generation of a minimalist geometry based on the functional flows (material, energy, and signal) of the part. In addition, the contributions of this PhD focused on designing with smart materials (DwSM). Because SMs play a functional rather than a structural role, concerns about these materials need to be addressed in advance of the design process (typically in conceptual design phase). In addition, unlike conventional materials (for which a few parameter values may suffice as information to the designer), SMs need to be described in more detail (stimulus, response, functions, etc.). For these reasons a design-oriented information system on SMs has been developed. This system makes it possible, among other things, to inform designers about the capabilities of SMs and also to determine SMs candidates for a concept. The system has been materialized by a web application. Finally, a modeling framework allowing quickly modeling and simulating an object made of SMs has been proposed. This framework is based on voxel modeling (volumetric pixel). In addition to the simulation of SMs behaviors, the proposed theoretical framework also allows the computation of a functional distribution of SMs and conventional material; distribution which, given a stimulus, makes it possible to deform an initial form towards a desired final form. A tool – based on Grasshopper, a plug-in of the CAD software Rhinoceros® – materializing this methodological framework has also been developed
Hellström, Kasimir. "Det moderna handledsskyddet för snowboardåkare : en revidering av materialval, funktion och målgruppsanpassning." Thesis, Malmö högskola, Teknik och samhälle, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-20658.
Full textThe project aims to develop customized wrist guards for snowboarders. By using optimized design for comfort and ease of use, the primary aim is to offer the customer a functional and high-quality protection. This is achieved by using materials that, considering the injury status of the practitioners, herein are considered to best meet the demands of such a protection. The choice of materials was made after a comprehensive literature-based study on wrist guard function and mechanisms responsible for wrist injuries. This study, along with other collected data, has formed the basis for the design process and the final product. Solutions to current problems with existing wrist guards have been applied to the final product. Requirements on ease of use and accuracy of fit have been met by abandoning the traditional closure-system of Velcro, in favor for an established lacing system that has been adapted to the current product. The entire shape of the wrist guard, combined with the selected materials breathable qualities, offers the user an increased comfort. The complementary aim of the project is to understand why so few practitioners wear wrist guards, and bring forth solutions that attracts to the usage of such. Wrist guards are currently unpopular amongst snowboarders, despite wrist fracture being the most common injury associated with the sport. Through the development of better wrist guards the injury statistics can be greatly improved.
XU, JUN-JIE, and 許俊傑. "Design and Implementation of Smart Factory for Material Monitoring System." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/w648cg.
Full text國立高雄大學
電機工程學系-電子構裝整合技術產業碩士專班
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In order to pursue high-efficiency and low-cost production targets, automated production is widely used in industry. This thesis is mainly aimed at the monitoring and utilization monitoring of raw materials in the automatic mask production process, and developed a set of sensor and material shortage warning system with additional devices. The design of the raw material monitoring system is to generate signals by an analog machine and collect the production information with the remote data extraction device and analyze it to understand the actual feeding status of the machine. The signal generated by the analog machine equipment is similar to the rotation mode of the raw material shaft of the mask production machine. The data acquisition device can collect the most realistic production information, and the accuracy of the analysis is relatively improved. In the future, the relative sensors can be combined with the existing working machine, which can achieve the effect of intelligent early warning. In addition, the analog machine circuit design, signal processing program and implementation and simulation details are described in detail in this article.
Liu, Sining. "Motion Control of Smart Material Based Actuators: Modeling, Controller Design and Experimental Evaluation." Thesis, 2013. http://spectrum.library.concordia.ca/978039/1/Liu_PhD_S2014.pdf.
Full textBartolomeu, Flávio. "Smart design of multi-functional and multimaterial NiTi-Ti6Al4V cellular structured implants by Selective Laser Melting." Doctoral thesis, 2019. http://hdl.handle.net/1822/75612.
Full textEste projeto de doutoramento está focado na melhoria de alguns aspetos relacionados com os implantes de anca comercialmente disponíveis. Hoje em dia, soluções padronizadas são implantadas em pacientes para restaurar a funcionalidade da articulação da anca e a mobilidade sem dor. Essa cirurgia é chamada Artroplastia Total de Anca (ATA) e é realizada todos os anos em mais de um milhão de pacientes em todo o mundo. A liga Ti6Al4V é a principal escolha para implantes ortopédicos, devido à sua resistência mecânica, resistência à corrosão e compatibilidade biológica. Vários problemas indesejáveis prevalecem nestes implantes, levando a uma alta percentagem de cirurgias de revisão, geralmente 10 a 15 anos após a implantação. A necessidade dessas cirurgias de revisão é um grande problema na área ortopédica pois afeta um grande número de pessoas. Estas cirurgias devem ser evitadas, pois apresentam maior risco para os pacientes do que que a ATQ. As estatísticas indicam que o aumento da expectativa de vida da população, a obesidade e o aumento das fraturas de anca são três fatores principais que exigirão um número ainda maior de implantes de anca em um futuro próximo. A falha do implante está relacionada com três aspetos: O primeiro é o elevado módulo de elasticidade dos convencionais implantes densos, quando comparado com o tecido ósseo cortical. O segundo é a baixa resistência ao desgaste desta da liga Ti6Al4V que induz a liberação de detritos de desgaste que são extremamente prejudiciais para os tecidos biológicos. A terceira é a pressão de contato não uniforme existente entre o implante e o osso adjacente que leva a deficiente distribuição das tensões, causando reabsorção óssea. Neste projeto de doutoramento, uma técnica de Manufatura Aditiva (Fusão Seletiva por Laser) foi usada para dar vida a um design inovador de materiais e estruturas, a fim de produzir soluções multifuncionais e multimaterial para implantes de anca. Estruturas celulares monomateriais de Ti6Al4V e NiTi e estruturas celulares multimateriais de Ti6Al4V-PEEK e NiTi-Ti6Al4V foram produzidas. Estes materiais exibem uma adequada combinação de performance tribológica e de tribocorrosão, rigidez, rugosidade superficial, molhabilidade e capilaridade. Este projeto providencia ferramentas de projeto e estratégias para a fusão selectiva por laser que visam o desenvolvimento de implantes de anca inteligentes.
This PhD project is focused on the improvement of some aspects related to the commercially available hip implants. Nowadays, standardized solutions are implanted in patients to restore hip joint functionality and pain-free mobility. This surgery is called Total Hip arthroplasty (THA) and is performed every year to more than one million patients worldwide. Ti6Al4V alloy is the main choice for orthopedic implants, due to its mechanical strength, corrosion resistance, and biological compatibility. Several undesirable issues prevailing in these implants leading to a high percentage of revision surgeries, usually 10 to 15 years after implantation. Unfortunately, the need for these revision surgeries is a major problem in orthopedic field, affecting a large number of people. These surgeries should be avoided once they present higher risks to the patients. In addition, the statistics indicate that the increase in life expectancy of the population, obesity and the increase of hip fractures are three key factors that will demand an even higher number of hip implants in the near future. Implant failure is mostly correlated to three issues: The first is the over-high elastic modulus of the conventional dense implants when compared to cortical bone tissue; The second is the poor wear resistance of this alloy that induces the release of wear debris, extremely detrimental to the biological tissues. The third is the non-uniform contact pressure existing between the implant and the nearby cortical bone that leads to a deficient stress transmission, causing bone resorption. In this PhD project, a Powder Bed Fusion Additive Manufacturing technique (Selective Laser Melting) was used to bring to life innovative design of materials and structures to produce multi-functional and multi-material solutions for hip implants. Mono-material Ti6Al4V and NiTi cellular structures, and multi-material Ti6Al4V-PEEK and NiTi-Ti6Al4V cellular structures were SLM produced. These structured materials show a suitable combination of tribological and tribocorrosion performance, stiffness, surface roughness, wettability and capillarity. This PhD project provides design tools and SLM strategies targeting the development of smart hip implants.
PhD grant SFRH/BD/128657/2017.