4d Printed Auxetic Structures With Tunable Mechanical Properties

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4D Printed Auxetic Structures with Tunable Mechanical Properties

Author : Mohammad Hani Yousuf
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)

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Book Synopsis 4D Printed Auxetic Structures with Tunable Mechanical Properties by : Mohammad Hani Yousuf

Download or read book 4D Printed Auxetic Structures with Tunable Mechanical Properties written by Mohammad Hani Yousuf and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Additive manufacturing (i.e., 3D printing) has revolutionized the entire design cycle from prototyping, machining, and assembly. The majority of the materials suitable for 3D printing result in rather rigid structures with a fixed set of properties. Four-dimensional printing (4D printing) addresses this limitation through the use of active and smart materials during 3D printing. The careful selection of structural design and suitable stimulus-activated smart material enables a unique set of shapes and properties to be programmed and achieved. This deviation from rigid structures with a fixed set of properties enables novel and unique applications in robotics, deployable structures, biomedical, and aerospace industries. The current work is focused on an interesting class of structures, 2D auxetic cellular solids, which exhibit distinctive mechanical properties (e.g., negative Poisson’s ratio) due to their carefully designed porous structure. 4D printing of such structures using smart materials allows for changes in the unit cell shape and dimensions to be made and thus resulting in tunable structural stiffness, Poisson’s ratio, and rigidity. This work aims to experimentally investigate the tunability of stiffness and Poisson’s ratio in 4D printed auxetic structure through utilization of programming and shape recovery properties found in Shape-Memory Polymers (SMP). Auxetic honeycomb structures with tunable mechanical properties were successfully manufactured and evaluated in this work. The attained structural stiffness was tuned in the range of 0.179-0.242 kN/mm while the Poisson’s ration was controlled from -0.33 up to even positive magnitudes of +0.69. This wide range of elastic properties was obtained from a single structure programmed to different deformation levels. Experimental evaluation of 4D printed SMP structures under constant cyclic programming/recovery conditions induced residual strains which consequently affected the mechanical properties by degrading the Poisson’s and structural stiffness. The magnitude of induced residual strains depend on the level of applied deformation during programing and the number of applied programing/recovery cycles. At the local level, full-field measurements revealed the localization of strains within the complex heterogeneous structure of the axially loaded auxetic honeycomb samples."--Abstract.

Smart Materials in Additive Manufacturing, volume 2: 4D Printing Mechanics, Modeling, and Advanced Engineering Applications

Author : Mahdi Bodaghi
Publisher : Elsevier
ISBN 13 : 0323954316
Total Pages : 466 pages
Book Rating : 4.3/5 (239 download)

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Book Synopsis Smart Materials in Additive Manufacturing, volume 2: 4D Printing Mechanics, Modeling, and Advanced Engineering Applications by : Mahdi Bodaghi

Download or read book Smart Materials in Additive Manufacturing, volume 2: 4D Printing Mechanics, Modeling, and Advanced Engineering Applications written by Mahdi Bodaghi and published by Elsevier. This book was released on 2022-06-25 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Smart Materials in Additive Manufacturing, Volume 2 covers the mechanics, modeling, and applications of the technology and the materials produced by it. It approaches the topic from an engineering design perspective with cutting-edge modeling techniques and real-world applications and case studies highlighted throughout. The book demonstrates 4D printing techniques for electro-induced shape memory polymers, pneumatic soft actuators, textiles, and more. Modeling techniques with ABAQUS and machine learning are outlined, as are manufacturing techniques for highly elastic skin, tunable RF and wireless structures and modules, and 4D printed structures with tunable mechanical properties. Closed-loop control of 4D printed hydrogel soft robots, hierarchical motion of 4D printed structures using the temperature memory effect, multimaterials 4D printing using a grasshopper plugin, shape reversible 4D printing, and variable stiffness 4D printing are each discussed as well. Outlines cutting-edge techniques, structural design, modeling, simulation, and tools for application-based 4D printing Details design, modeling, simulation, and manufacturing considerations for various fields Includes case studies demonstrating real-world situations where the techniques and concepts discussed were successfully deployed Applications covered include textiles, soft robotics, auxetics and metamaterials, micromachines, sensors, bioprinting, and wireless devices 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

Auxetic Materials and Structures

Author : Teik-Cheng Lim
Publisher : Springer
ISBN 13 : 9812872752
Total Pages : 591 pages
Book Rating : 4.8/5 (128 download)

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Book Synopsis Auxetic Materials and Structures by : Teik-Cheng Lim

Download or read book Auxetic Materials and Structures written by Teik-Cheng Lim and published by Springer. This book was released on 2014-12-27 with total page 591 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book lays down the foundation on the mechanics and design of auxetic solids and structures, solids that possess negative Poisson’s ratio. It will benefit two groups of readers: (a) industry practitioners, such as product and structural designers, who need to control mechanical stress distributions using auxetic materials, and (b) academic researchers and students who intend to produce unique mechanical and other physical properties of structures using auxetic materials.

Advanced Composite Materials for Aerospace Engineering

Author : Sohel Rana
Publisher : Woodhead Publishing
ISBN 13 : 0081000545
Total Pages : 498 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Advanced Composite Materials for Aerospace Engineering by : Sohel Rana

Download or read book Advanced Composite Materials for Aerospace Engineering written by Sohel Rana and published by Woodhead Publishing. This book was released on 2016-04-26 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Composite Materials for Aerospace Engineering: Processing, Properties and Applications predominately focuses on the use of advanced composite materials in aerospace engineering. It discusses both the basic and advanced requirements of these materials for various applications in the aerospace sector, and includes discussions on all the main types of commercial composites that are reviewed and compared to those of metals. Various aspects, including the type of fibre, matrix, structure, properties, modeling, and testing are considered, as well as mechanical and structural behavior, along with recent developments. There are several new types of composite materials that have huge potential for various applications in the aerospace sector, including nanocomposites, multiscale and auxetic composites, and self-sensing and self-healing composites, each of which is discussed in detail. The book’s main strength is its coverage of all aspects of the topics, including materials, design, processing, properties, modeling and applications for both existing commercial composites and those currently under research or development. Valuable case studies provide relevant examples of various product designs to enhance learning. Contains contributions from leading experts in the field Provides a comprehensive resource on the use of advanced composite materials in the aerospace industry Discusses both existing commercial composite materials and those currently under research or development

Four-dimensional (4D) Printing

Author : Yusheng Shi
Publisher : Frontiers Media SA
ISBN 13 : 2889715973
Total Pages : 116 pages
Book Rating : 4.8/5 (897 download)

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Book Synopsis Four-dimensional (4D) Printing by : Yusheng Shi

Download or read book Four-dimensional (4D) Printing written by Yusheng Shi and published by Frontiers Media SA. This book was released on 2021-11-05 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fundamentals of 3D Food Printing and Applications

Author : Fernanda C. Godoi
Publisher : Academic Press
ISBN 13 : 012814565X
Total Pages : 408 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Fundamentals of 3D Food Printing and Applications by : Fernanda C. Godoi

Download or read book Fundamentals of 3D Food Printing and Applications written by Fernanda C. Godoi and published by Academic Press. This book was released on 2018-11-02 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of 3D Food Printing and Applications provides an update on this emerging technology that can not only create complex edible shapes, but also enable the alteration of food texture and nutritional content required by specific diets. This book discusses 3D food printing technologies and their working mechanisms within a broad spectrum of application areas, including, but not limited to, the development of soft foods and confectionary designs. It provides a unique and contemporary guide to help correlate supply materials (edible inks) and the technologies (e.g., extrusion and laser based) used during the construction of computer-aided 3D shapes. Users will find a great reference that will help food engineers and research leaders in food science understand the characteristics of 3D food printing technologies and edible inks. Details existing 3D food printing techniques, with an in-depth discussion on the mechanisms of formation of self-supporting layers Includes the effects of flow behaviour and viscoelastic properties of printing materials Presents strategies to enhance printability, such as the incorporation of hydrocolloids and lubricant enhancers 3D printing features of a range of food materials, including cereal based, insect enriched, fruits and vegetables, chocolate and dairy ingredients Business development for chocolate printing and the prospects of 3D food printing at home for domestic applications Prosumer-driven 3D food printing Safety and labelling of 3D printed food

4D Printing

Author : Rupinder Singh
Publisher : Elsevier
ISBN 13 : 0128237260
Total Pages : 195 pages
Book Rating : 4.1/5 (282 download)

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Book Synopsis 4D Printing by : Rupinder Singh

Download or read book 4D Printing written by Rupinder Singh and published by Elsevier. This book was released on 2022-01-11 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: 4D Printing: Fundamentals and Applications explores both autonomic and non-autonomic systems with different stimulus such as temperature, current, moisture, light and sound. In addition, the fifth dimensional aspect using more than one stimulus is outlined for additive manufacturing processes. The book presents both an introduction to the basic understanding of hybrid processes and explores the physics behind the process (in the form of derivation and numerical problems). For the field engineer, applicable codes and standards for each hybrid process are provided. Lastly, case studies are included in each section to provide the reader with a model to explore future research directions. Begins with the fundamentals of the hybrid additive manufacturing process Presents a discussion of the physics behind smart material functioning in hybrid additive manufacturing Includes real world case studies on 4D and 5D printing, as well as a look at future research dimensions

Smart Materials in Additive Manufacturing, volume 1: 4D Printing Principles and Fabrication

Author : Mahdi Bodaghi
Publisher : Elsevier
ISBN 13 : 0128240830
Total Pages : 484 pages
Book Rating : 4.1/5 (282 download)

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Book Synopsis Smart Materials in Additive Manufacturing, volume 1: 4D Printing Principles and Fabrication by : Mahdi Bodaghi

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

Additive Manufacturing for the Aerospace Industry

Author : Francis H. Froes
Publisher : Elsevier
ISBN 13 : 0128140631
Total Pages : 482 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Additive Manufacturing for the Aerospace Industry by : Francis H. Froes

Download or read book Additive Manufacturing for the Aerospace Industry written by Francis H. Froes and published by Elsevier. This book was released on 2019-02-15 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive Manufacturing for the Aerospace Industry explores the design, processing, metallurgy and applications of additive manufacturing (AM) within the aerospace industry. The book's editors have assembled an international team of experts who discuss recent developments and the future prospects of additive manufacturing. The work includes a review of the advantages of AM over conventionally subtractive fabrication, including cost considerations. Microstructures and mechanical properties are also presented, along with examples of components fabricated by AM. Readers will find information on a broad range of materials and processes used in additive manufacturing. It is ideal reading for those in academia, government labs, component fabricators, and research institutes, but will also appeal to all sectors of the aerospace industry. Provides information on a broad range of materials and processes used in additive manufacturing Presents recent developments in the design and applications of additive manufacturing specific to the aerospace industry Covers a wide array of materials for use in the additive manufacturing of aerospace parts Discusses current standards in the area of aerospace AM parts

Shape Memory Polymers, Blends and Composites

Author : Jyotishkumar Parameswaranpillai
Publisher : Springer
ISBN 13 : 9811385742
Total Pages : 329 pages
Book Rating : 4.8/5 (113 download)

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Book Synopsis Shape Memory Polymers, Blends and Composites by : Jyotishkumar Parameswaranpillai

Download or read book Shape Memory Polymers, Blends and Composites written by Jyotishkumar Parameswaranpillai and published by Springer. This book was released on 2019-07-01 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the recent advances in the field of shape memory polymers, whose ease of manufacturing and wide range of potential applications have spurred interest in the field. The book presents details about the synthesis, processing, characterization, and applications of shape memory polymers, their blends and composites. It provides a correlation of physical properties of shape memory polymers with macro, micro and nano structures. The contents of this book will be of interest to researchers across academia and industry.

Design and Modeling of Mechanical Systems - IV

Author : Nizar Aifaoui
Publisher : Springer Nature
ISBN 13 : 3030271463
Total Pages : 961 pages
Book Rating : 4.0/5 (32 download)

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Book Synopsis Design and Modeling of Mechanical Systems - IV by : Nizar Aifaoui

Download or read book Design and Modeling of Mechanical Systems - IV written by Nizar Aifaoui and published by Springer Nature. This book was released on 2020-02-26 with total page 961 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a collection of original peer-reviewed contributions presented at the 8th International Congress on Design and Modeling of Mechanical Systems (CMSM’2019), held in Hammamet, Tunisia, from the 18th to the 20th of March 2019. It reports on research, innovative industrial applications and case studies concerning mechanical systems and related to modeling and analysis of materials and structures, multiphysics methods, nonlinear dynamics, fluid structure interaction and vibroacoustics, design and manufacturing engineering. Continuing on the tradition of the previous editions, these proceedings offers a broad overview of the state-of-the art in the field and a useful resource for academic and industry specialists active in the field of design and modeling of mechanical systems. CMSM’2019 was jointly organized by two leading Tunisian research laboratories: the Mechanical Engineering Laboratory of the National Engineering School of Monastir, University of Monastir and the Mechanical, Modeling and Manufacturing Laboratory of the National Engineering School of Sfax, University of Sfax.

3D Printing and Finite Element Modeling of Auxetic Re-entrant Structures for Impact Applications

Author : Florian Baertsch
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (126 download)

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Book Synopsis 3D Printing and Finite Element Modeling of Auxetic Re-entrant Structures for Impact Applications by : Florian Baertsch

Download or read book 3D Printing and Finite Element Modeling of Auxetic Re-entrant Structures for Impact Applications written by Florian Baertsch and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Additive manufacturing technologies such as fused filament fabrication (FFF) enable us to manufacture meta-structures with more complexity and design freedom on relevant scales. As previously reported for foam materials, a stiffness gradient can be implemented in an auxetic re-entrant structure by varying the cell height within the structure. This gradient is anticipated to be beneficial for energy absorption at different impact velocities. Thus, this work investigates the impact behavior of graded re-entrant structures. Appropriate models are necessary to simulate 3D printed re-entrant structures under static and dynamic loading conditions. Acrylonitrile butadiene styrene (ABS) was selected as the model material to print the test specimens and the structures by FFF. Quasi static tensile and compressive tests were performed in the lower strain rate range; the test data was then complemented with dynamic data of conventionally produced ABS and a constitutive model was calibrated. A dynamic explicit finite element (FE) model was set up in order to simulate the stress-strain response of reentrant structures for different angles under compression. This model was checked by quasi static compression tests of printed auxetic structures. An FE model was then set up to conduct optimization on the structures under impact loading with varying velocities. Good agreement between the simulation and experimental stress values was found for the compressive deformation characteristics of auxetic re-entrant structures with different angles, especially in the elastic and instability phases of the response. Further improvements of the FE model were achieved for higher re-entrant angles by accounting for the printing imperfections such as radii. Positive effects of stiffness gradient on the impact accelerations were observed from the optimization results, but the local optima were within small tolerances of the design parameters. Future investigations could focus on reducing the cell size and a full validation of the FE model before application.

Sports Materials

Author : Thomas Allen
Publisher : MDPI
ISBN 13 : 3039281623
Total Pages : 166 pages
Book Rating : 4.0/5 (392 download)

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Book Synopsis Sports Materials by : Thomas Allen

Download or read book Sports Materials written by Thomas Allen and published by MDPI. This book was released on 2020-01-24 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in materials are crucial to the development of sports equipment, from tennis rackets to skis to running shoes. Materials-driven improvements in equipment have helped athletes perform better, while enhancing safety and making sport more accessible and enjoyable. This book brings together a collection of 10 papers on the topic of sports materials, as published in a Special Issue of Applied Sciences. The papers within this book cover a range of sports, including golf, tennis, table tennis and baseball. State-of-the-art engineering techniques, such as finite element modelling, impact testing and full-field strain measurement, are applied to help further our understanding of sports equipment mechanics and the role of materials, with a view to improving performance, enhancing safety and facilitating informed regulatory decision making. The book also includes papers that describe emerging and novel materials, including auxetic materials with their negative Poisson’s ratio (fattening when stretched) and knits made of bamboo charcoal. This collection of papers should serve as a useful resource for sports engineers working in both academia and industry, as well as engineering students who are interested in sports equipment and materials.

Polymer-Based Additive Manufacturing

Author : Declan M. Devine
Publisher : Springer Nature
ISBN 13 : 3030245322
Total Pages : 277 pages
Book Rating : 4.0/5 (32 download)

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Book Synopsis Polymer-Based Additive Manufacturing by : Declan M. Devine

Download or read book Polymer-Based Additive Manufacturing written by Declan M. Devine and published by Springer Nature. This book was released on 2019-09-16 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to give readers a basic understanding of commonly used additive manufacturing techniques as well as the tools to fully utilise the strengths of additive manufacturing through the modelling and design phase all the way through to post processing. Guidelines for 3D-printed biomedical implants are also provided. Current biomedical applications of 3D printing are discussed, including indirect applications in the rapid manufacture of prototype tooling and direct applications in the orthopaedics, cardiovascular, drug delivery, ear-nose-throat, and tissue engineering fields. Polymer-Based Additive Manufacturing: Biomedical Applications is an ideal resource for students, researchers, and those working in industry seeking to better understand the medical applications of additive manufacturing.

Digital Manufacturing

Author : Chandrakant D. Patel
Publisher : Elsevier
ISBN 13 : 0323950639
Total Pages : 485 pages
Book Rating : 4.3/5 (239 download)

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Book Synopsis Digital Manufacturing by : Chandrakant D. Patel

Download or read book Digital Manufacturing written by Chandrakant D. Patel and published by Elsevier. This book was released on 2022-07-06 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: Digital Manufacturing: The Industrialization of "Art to Part" 3D Additive Printing explains everything needed to understand how recent advances in materials science, manufacturing engineering and digital design have integrated to create exciting new capabilities. Sections discuss relevant fundamentals in mechanical engineering and materials science and complex and practical topics in additive manufacturing, such as part manufacturing, all in the context of the modern digital design environment. Being successful in today’s "art to part" cyber-physical manufacturing age requires a strong grounding in science and engineering fundamentals as well as knowledge of the latest techniques, all of which readers will find here. Every chapter is developed by leading specialists and based on first-hand experiences, capturing the essential knowledge readers need to solve problems related to digital manufacturing. Helps produce the "T-shaped" engineers needed in today’s digital manufacturing age by providing carefully selected foundational information from a range of disciplines Covers every step in the additive manufacturing process, from product design through inspection Addresses business models and socioeconomic trends related to cyber physical manufacturing, along with technical aspects

Handbook of Mechanics of Materials

Author : Siegfried Schmauder
Publisher : Springer
ISBN 13 : 9789811068836
Total Pages : 0 pages
Book Rating : 4.0/5 (688 download)

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Book Synopsis Handbook of Mechanics of Materials by : Siegfried Schmauder

Download or read book Handbook of Mechanics of Materials written by Siegfried Schmauder and published by Springer. This book was released on 2019-05-09 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive reference for the studies of mechanical properties of materials over multiple length and time scales. The topics include nanomechanics, micromechanics, continuum mechanics, mechanical property measurements, and materials design. The handbook employs a consistent and systematic approach offering readers a user friendly reference ideal for frequent consultation. It is appropriate for an audience at of graduate students, faculties, researchers, and professionals in the fields of Materials Science, Mechanical Engineering, Civil Engineering, Engineering Mechanics, and Aerospace Engineering.

Bioresorbable Polymers

Author : Declan Devine
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 3110640570
Total Pages : 152 pages
Book Rating : 4.1/5 (16 download)

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Book Synopsis Bioresorbable Polymers by : Declan Devine

Download or read book Bioresorbable Polymers written by Declan Devine and published by Walter de Gruyter GmbH & Co KG. This book was released on 2019-04-15 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioresorbable implants can be processed via conventional polymer processing methods such as extrusion, injection and compressing moulding, solvent spinning or casting. This book addresses issues and highlights recent advances in the use of biodegradable polymers. It is intended for researchers utilizing biodegradable polymers in areas from tissue engineering to controlled release of active pharmaceuticals, as well as industrial processors.