Download or read book Additive Manufacturing of Heterogeneous Composites for Biomimetic Robots written by Armita Hamidi and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Printing complex objects from computer-aided design models is a unique capability of additive manufacturing (AM). Developing this ability to print heterogeneous materials with diverse mechanical properties will advance AM beyond the current capabilities, eliminating the need for assembly and post-processing, and promoting the efficient design of multifunctional complex objects with minimum time and cost. Considering this concept, we aim to investigate this technology to fabricate biologically inspired structures, actuators, and robots. In this dissertation, first, an inexpensive 3D printer is developed for a single step fabrication of a novel bioinspired joint system, consisting of dissimilar materials with high strength and high strain. The joint consists of thermoplastic parts reinforced with metal fibers that resemble bones and soft elastomer that mimics soft tissue. An open-source 3D printer is modified to print thermoplastic with continuous fibers (copper and steel), where the metal fibers act as reinforcement within a polymer matrix (PLA and PETG). The influence of different wire materials and polymer matrixes on the tensile modulus and ultimate tensile strength is studied. The properties of the samples are predicted analytically using several models and compared with experimental results. Highly stretchable elastomer is directly 3D printed and simultaneously cured by heating. Moreover, a cost effective multi-material AM (modified FDM and DIW) is developed that maintained high elasticity and sufficient strength for printing components that mimic the musculoskeletal system. In the second part of the study, the main focus is on the highly elastic materials, sacrificial materials, and actuation units to further develop the fabrication of highly elastic soft structures. Silicone thinner is used to tailor the mechanical properties of the soft material, and it is shown that the addition of the thinner to the silicone reduces the tensile modulus and improves the elongation to break. By adding 20% volume thinner to the silicone, the 3D printed silicone samples reached to 1260% elongation without breaking, which is the highest among all the 3D printed elastomers previously reported. However, this strain is not achieved in the cyclic tensile test, instead, the maximum strain was 600 % where the sample failed after 40 cycles. To create hollow channels during 3D printing of silicone, carbohydrate glasses are introduced as sacrificial materials. Few configurations of fluidic actuators that are commonly used in soft robots are developed by forming channels in the silicone elastomer via 3D printed sacrificial carbohydrate structures. The last part is the design and development of biomimetic structures (jellyfish, modular joint and starfish structures) by the existing method of robot manufacturing and proposed AM techniques. The primary focus on this part is on the design, development, and analysis of the heterogeneous structures of biomimetic robots. Therefore, a complete fabrication process for each of the robotic structure is identified and used to make multiple functional prototypes. All the demonstrated biomimetic systems are actuated by embedding twisted and coiled polymer (TCP) muscle during or after the fabrication process or assembled. The flexibility of the TCP enables the soft robot to bend, twist, and change shape while it is embedded in the structure. 6-Ply and 4-Ply silver-coated nylon (TCP) muscle geometries were studied and used for the design and development of the jellyfish and starfish like robots. The capabilities offered by these biomimetic robots are extensively characterized such as: (i) swimming, (ii) multidirectional bending, and (iii) producing morphing shapes. Extensive evaluations of these capabilities with functional prototypes demonstrate that integration TCP with elastomer is viable for creating biomimetic robots.

Download or read book High Performance Composite Structures written by A. Praveen Kumar and published by Springer Nature. This book was released on 2021-12-08 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers advanced 3D printing processes and the latest developments in novel composite-based printing materials, thus enabling the reader to understand and benefit from the advantages of this groundbreaking technology. The rise in ecological anxieties has forced scientists and researchers from all over the world to find novel lightweight materials. Therefore, it is necessary to expand knowledge about the processing, applications, and challenges of 3D printing of composite materials to expanding the range of their application. This book presents an extensive survey on recent improvements in the research and development of additive manufacturing technologies that are used to make composite structures for various applications such as electronic, aerospace, construction, and biomedical applications. Advanced printing techniques including fused deposition modeling (FDM), selective laser sintering (SLS), selective laser melting (SLM), electron beam melting (EBM), inkjet 3D printing (3DP), stereolithography (SLA), and 3D plotting will be covered and discussed thoroughly in this book. This book also focuses the recent advances and challenges in polymer nanocomposite and introduces potential applications of these materials in various sectors.

Download or read book Smart Materials in Additive Manufacturing volume 1 4D Printing Principles and Fabrication written by Mahdi Bodaghi and published by Elsevier. This book was released on 2022-06-25 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Smart Materials in Additive Manufacturing, Volume 1 provides readers with an overview of the current smart materials widely in use and the techniques for additively manufacturing them. It demonstrates the principles developed for 4D printing in a way that is useful for students, early career researchers, and professionals. Topics covered include modeling and fabrication of 4D printed materials such as dielectric elastomer soft robots, low-voltage electroactive polymers, and stimuli-responsive hydrogels. 4D printing of light-responsive structures, gels and soft materials, and natural fiber composites are also discussed, as is origami-inspired 4D printing, 4D microprinting, and reversible 4D printing. 4D bioprinting and related biomedical applications are outlined as well as functionalized 4D printed sensor systems. Key Features:* Discusses 4D printed shape memory polymers, shape memory alloys, natural fibers, and hydrogels* Covers various types of stimuli, fabrication techniques, multi-physics modeling, and control strategies for 4D printing* Explores 4D printing of dielectric elastomers, liquid crystal elastomers, and electroactive polymers Covers the mechanics, manufacturing processes and applications of 4D-printed smart materials and structures Discusses applications in civil, mechanical, aerospace, polymer and biomedical engineering Presents experimental, numerical and analytical studies in a simple and straightforward manner, providing tools that can be immediately implemented and adapted by readers to fit their work

Download or read book Advances in Additive Manufacturing written by Ajay Kumar and published by Elsevier. This book was released on 2022-11-24 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited book is a compilation of scholarly articles on the latest developments in the field of additive manufacturing, discussing nature-inspired and artificial intelligence–aided additive manufactured processes for different materials including biomanufacturing, and their applications, as well as various methods to enhance the characteristics of the materials produced, the efficiency of the manufacturing process itself, as well as optimal ways to develop a product in minimum time. The book explores the advancements in additive manufacturing from prefabrication stage to final product, with real-time defect detection, control, and process efficiency improvement covered. This book will be a great resource for engineers, researchers, and academics involved in this revolutionary and unique field of manufacturing. Discusses modeling of additive manufacturing processes by artificial intelligence Looks at the optimization of designs, technologies, and material fabrication and the use of simulation in additive manufacturing Includes case studies and real-world industrial problems and solutions

Download or read book Additive Manufacturing Hybrid Processes for Composites Systems written by António Torres Marques and published by Springer Nature. This book was released on 2020-04-27 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the emerging additive manufacturing technology and its applications beyond state-of-the-art, fibre-reinforced thermoplastics. It also discusses the development of a hybrid, integrated process that combines additive and subtractive operations in a single-step platform, allowing CAD-to-Part production with freeform shapes using long or continuous fibre-reinforced thermoplastics. The book covers the entire value chain of this next-generation technology, from part design and materials composition to transformation stages, product evaluation, and end-of-life studies. Moreover, it addresses the following engineering issues: • Design rules for hybrid additive manufacturing; • Thermoplastic compounds for high-temperature and -strength applications; • Advanced extrusion heads and process concepts; • Hybridisation strategies; • Software ecosystems for hAM design, pre-processing, process planning, emulating and multi-axis processing; • 3D path generators for hAM based on a multi-objective optimisation algorithm that matches the recent curved adaptive slicing method with a new transversal scheme; • hAM parameters, real-time monitoring and closed-loop control; • Multiparametric nondestructive testing (NDT) tools customised for FRTP AM parts; • Sustainable manufacturing processes validated by advanced LCA/LCC models.

Download or read book Additive Manufacturing of Polymer Based Composite Materials written by Fabienne Touchard and published by Elsevier. This book was released on 2024-06-28 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive Manufacturing of Polymer Composites: Materials, Processes, and Properties presents the latest developments in AM of polymer matrix composites and illustrates the large range of composite materials that can be obtained. Different technologies with their own specificities such as: fused filament fabrication, selective laser sintering, stereolithography, and direct-ink-writing. Composites with chopped or continuous reinforcement, with synthetic or natural fibers, with thermoplastic or thermoset resin are compared and described in detail. Their thermal, physical, electrical, and mechanical properties are discussed. The book is dedicated to professionals involved in engineering design and production, as well as industrial communities who want to gain in-depth knowledge in the field of 3D printed composites. Provides an overview of different methods for additive manufacturing of polymer-based matrix composites Covers long and short fiber-based composites and corresponding application examples Addresses the development and properties of a wide range of matrices (thermoplastics, thermosets), and fibers (natural and synthetic) in a user-specified orientation, continuous or random organization and hierarchical structures Presents sustainability and structural reliability of composite structures Displays a careful balance between materials science and technology, providing a detailed understanding of how composites’ properties, processing, performance, and structure are interrelated

Download or read book Additive Manufacturing of Aerospace Composite Structures written by Rani Elhajjar and published by SAE International. This book was released on 2017-05-20 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive Manufacturing of Aerospace Composite Structures: Fabrication and Reliability introduces the reader to the current state of technologies involved in processing and design of polymer-reinforced fiber composites using additive manufacturing's automated fiber placement methods, through ten seminal SAE International papers. Currently, the material layup strategy in terms of process selection and manufacturability is usually not prioritized in the design phase. Engineers do not have a good way to see how their design choices can affect the manufacturing process beyond their initial structural-level considerations. The result is typically a large amount of experimental testing necessary to qualify the materials and structures typified in the classical building-block approach. Such an environment makes mistakes difficult to solve and, should redesign be required, obtaining reliable information is hard to piece together. Additive Manufacturing of Aerospace Composite Structures: Fabrication and Reliability approaches the question of quality in these structures from a hands-on, solution-driven perspective.

Download or read book Innovative Processes and Materials in Additive Manufacturing written by Sunpreet Singh and published by Elsevier. This book was released on 2022-08-15 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Innovative Processes and Materials in Additive Manufacturing explains game-changing interdisciplinary applications of recent research breakthroughs in additive manufacturing technology. The number of research publications addressing additive manufacturing has soared in recent years as a range of disciplines explore the possibilities that this technology can provide. This book acts as a bridge between this high-level research and the large number of academics and practitioners looking to additive manufacturing for innovative solutions, providing them with practical and approachable information. Applications in aerospace, automotive, medical, construction, and food industries are addressed, featuring technical details that will help successful implementation. This unique book also provides broad coverage of the theory behind this emerging technology, including material development, as well as the technical details required for readers to investigate the novel applications of the involved methods for themselves. Includes case studies from the aerospace, construction and medical industries Features innovations in the integration of additive manufacturing processes with other manufacturing technologies Identifies exciting routes for future research and application areas of additive manufacturing

Download or read book Optimal Design for Additive Manufacturing of Heterogeneous Objects written by Yuna Hu and published by . This book was released on 2005 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Untethered Miniature Soft Robots written by Li Zhang and published by John Wiley & Sons. This book was released on 2023-10-19 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: Untethered Miniature Soft Robots Reference on achieving contactless manipulation of soft robots, detailing high level concepts and perspectives and technical skills of soft robots Untethered Miniature Soft Robots: Materials, Fabrications, and Applications introduces the emerging field of miniature soft robots and summarizes the recent rapid development in the field to date, describing different types of functional materials to build miniature soft robots, such as silicone elastomer, carbon-based materials, hydrogels, liquid crystal polymer, flexible ferrofluid, and liquid metal, and covering the material properties, fabrication strategies, and functionalities in soft robots together with their underlying mechanisms. The book discusses magnetically, thermally, optically, and chemically actuated soft robots in depth, explores the many specific applications of miniature soft robots in biomedical, environmental, and electrical fields and summarizes the development of miniature soft robots based on soft matter, fabrication strategies, locomotion principles, sensing and actuation mechanisms. In closing, the text summarizes the opportunities and challenges faced by miniature soft robots, providing expert insight into the possible futures of this field. Written by four highly qualified academics, Untethered Miniature Soft Robots covers sample topics such as: Soft elastomer-based robots with programmable magnetization profiles and untethered soft robots based on template-aiding Working mechanisms of carbon-based materials, covering light-induced expansion and shrinkage, and humidity-induced deformation Designing microscale building blocks, modular assembly of building blocks based on Denavit-Hartenberg (DH) matrix, and inverse and forward design of modular morphing systems Material designs of magnetic liquid crystal elastomers (LCE) systems, multiple-stimuli responsiveness of magnetic LCE systems, and adaptive locomotion of magnetic LCE-based robots Controllable deformation and motion behaviors, as well as applications of ferrofluids droplet robots (FDRs), including cargo capturing, object sorting, liquid pumping/mixing, and liquid skin. Providing highly detailed and up-to-date coverage of the topic, Untethered Miniature Soft Robots serves as an invaluable and highly comprehensive reference for researchers working in this promising field across a variety of disciplines, including materials scientists, mechanical and electronics engineers, polymer chemists, and biochemists.

Download or read book Manufacturing Techniques for Materials written by T.S. Srivatsan and published by CRC Press. This book was released on 2018-04-09 with total page 1091 pages. Available in PDF, EPUB and Kindle. Book excerpt: Manufacturing Techniques for Materials: Engineering and Engineered provides a cohesive and comprehensive overview of the following: (i) prevailing and emerging trends, (ii) emerging developments and related technology, and (iii) potential for the commercialization of techniques specific to manufacturing of materials. The first half of the book provides the interested reader with detailed chapters specific to the manufacturing of emerging materials, such as additive manufacturing, with a valued emphasis on the science, technology, and potentially viable practices specific to the manufacturing technique used. This section also attempts to discuss in a lucid and easily understandable manner the specific advantages and limitations of each technique and goes on to highlight all of the potentially viable and emerging technological applications. The second half of this archival volume focuses on a wide spectrum of conventional techniques currently available and being used in the manufacturing of both materials and resultant products. Manufacturing Techniques for Materials is an invaluable tool for a cross-section of readers including engineers, researchers, technologists, students at both the graduate level and undergraduate level, and even entrepreneurs.

Download or read book Bioinspired Photonics written by Viktoria Greanya and published by CRC Press. This book was released on 2015-07-01 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Harness the Wonders of the Natural World As our in-depth knowledge of biological systems increases, the number of devices and applications built from these principles is rapidly growing. Bioinspired Photonics: Optical Structures and Systems Inspired by Nature provides an interdisciplinary introduction to the captivating and diverse photonic systems

Download or read book Additive Manufacturing written by Amit Bandyopadhyay and published by CRC Press. This book was released on 2015-09-08 with total page 547 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of additive manufacturing has seen explosive growth in recent years due largely in part to renewed interest from the manufacturing sector. Conceptually, additive manufacturing, or industrial 3D printing, is a way to build parts without using any part-specific tooling or dies from the computer-aided design (CAD) file of the part. Today, mo

Download or read book Manufacturing Techniques for Polymer Matrix Composites PMCs written by Suresh G Advani and published by Elsevier. This book was released on 2012-07-18 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer matrix composites are used extensively across a wide range of industries, making the design and development of effective manufacturing processes of great importance. Manufacturing techniques for polymer matrix composites (PMCs) provides an authoritative review of the different technologies employed in the manufacture of this class of composite. Following an introduction to composites and manufacturing processes, part one reviews the manufacturing of short fiber and nanoparticle based polymer matrix composites, with injection and compression molding examined in depth. Thermoplastic processing is the focus of part two. Sheet forming, fabric thermostamping, filament winding and continuous fiber reinforced profiles are investigated. Part three reviews thermoset processing. A survey of resin transfer molding follows, including vacuum-assisted and compression resin transfer molding. The pultrusion process is then considered, before the book concludes with an investigation into autoclave and out-of-autoclave curing processes in polymer matrix composites. With its distinguished editors and international team of expert contributors, Manufacturing techniques for polymer matrix composites (PMCs) is an essential guide for engineers and scientists working in the field of polymer matrix composites. Provides an authoritative review of the different technologies employed in the manufacture of polymer matrix composites Reviews the manufacturing of short fiber and nanoparticle-based polymer matrix composites, with injection and compression molding examined in depth Examines thermoplastic processing, sheet forming, fabric thermostamping, filament winding and continuous fiber reinforced profiles

Download or read book Ionic Polymer Metal Composites IMPCs written by Mohsen Shahinpoor and published by Royal Society of Chemistry. This book was released on 2016 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive resource on ionic polymer metal composites (IPMCs) edited by the leading authority on the subject.

Download or read book Fabricate 2024 written by Bob Sheil and published by UCL Press. This book was released on 2024-04-04 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fabricate 2024: Creating Resourceful Futures is the fifth volume in the series of Fabricate publications. The first conference – ‘Making Digital Architecture’ – explored the ways in which technology, design and industry are shaping the world around us. Since then, we have become finely attuned to the negative impacts of this shaping. The 2024 conference, hosted in Copenhagen, sets focus on the pressing need to develop new models for architectural production that rethink how resource is deployed, its intensity, its socio-ecological origins and sensitivity to environment. This book features the work of designers, engineers and makers operating within the built environment. It documents disruptive approaches that reconsider how fabrication can be leveraged to address our collective and entangled challenges of resource scarcity, climate emergency and burgeoning demand. Exploring case studies of completed buildings and works-in-progress, together with interviews with leading thinkers, this edition of Fabricate offers a plurality of tangible models for design and production that set a creative and responsible course towards resourceful futures.

Download or read book Material Computation written by Achim Menges and published by John Wiley & Sons. This book was released on 2012-04-02 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of architecture, both intellectually and physically, is on the brink of a fundamental change. Computational design enables architects to integrate ever more multifaceted and complex design information, while the industrial logics of conventional building construction are eroding rapidly in a context of increasingly ubiquitous computer-controlled manufacturing and fabrication. A novel convergence of computation and materialisation is about to emerge, bringing the virtual process of design and the physical realisation of architecture much closer together, more so than ever before. Computation provides a powerful agency for both informing the design process through specific material behaviour and characteristics, and in turn informing the organisation of matter and material across multiple scales based on feedback from the environment. Computational design and integrated materialisation processes allow for uncovering the inherent morphogenetic potential of materials and thus are opening up a largely uncharted field of possibilities for the way the built environment in the 21st century is conceived and produced. In order to effectively introduce and outline the enabling power of computational design along with its inherent relationship to a biological paradigm, this publication looks at formation and materialisation in nature, integrative computational design, and engineering and manufacturing integration. Architectural contributors include: Cristiano Cecatto, Neri Oxman, Skylar Tibbits and Michael Weinstock. A scientific perspective by Philip Ball and J Scott Turner. Features: Buro Happold's SMART group, DiniTech, Foster + Partners' Specialist Modelling Group, the Freeform Construction group and Stuttgart University's Institute for Computational Design.