Advanced Engineering Materials

Cover image for Vol. 16 Issue 3

Special Issue: Cellular Materials

March 2014

Volume 16, Issue 3

Pages 265–339

Issue edited by: Günter Stephani, Michael Scheffler

  1. Cover Picture

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    3. Masthead
    4. Contents
    5. Editorial
    6. Research News
    7. Communications
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      Front Cover: Advanced Engineering Materials 3∕2014 (page 265)

      Article first published online: 14 MAR 2014 | DOI: 10.1002/adem.201470009

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      Functionalized cellular materials are gaining importance in various applications. In the field of lightweight construction, for example, fibrereinforced polymeric foams with integrated functional elements like sensors and actors enable the realization of active lightweight structures. More details can be found in the article by Sirko Geller and co-workers on page 272.

  2. Masthead

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      Masthead: Adv. Eng. Mater. 3∕2014 (page 266)

      Article first published online: 14 MAR 2014 | DOI: 10.1002/adem.201470010

  3. Contents

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      Contents: Adv. Eng. Mater. 3∕2014 (pages 267–270)

      Article first published online: 14 MAR 2014 | DOI: 10.1002/adem.201470011

  4. Editorial

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      Dear Readers of AEM's Special Issue “Cellular Materials” (page 271)

      Günter Stephani and Michael Scheffler

      Article first published online: 14 MAR 2014 | DOI: 10.1002/adem.201400047

  5. Research News

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    1. Cellular Fiber-Reinforced Polyurethane Composites with Sensory Properties (pages 272–275)

      Werner Hufenbach, Maik Gude and Sirko Geller

      Article first published online: 14 AUG 2013 | DOI: 10.1002/adem.201300080

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      As part of the efforts to reduce weight of structural components, fiber composites and especially cellular polymers are gaining importance. The potential of fiber reinforced polyurethanes with cellular matrix for lightweight applications and function integration is presented. A novel technology based on the LFI process for the manufacture of lightweight components with integrated piezoelectric functional elements is introduced.

  6. Communications

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    1. Designing Metallic Microlattices for Energy Absorber Applications (pages 276–283)

      Tobias A. Schaedler, Christopher J. Ro, Adam E. Sorensen, Zak Eckel, Sophia S. Yang, William B. Carter and Alan J. Jacobsen

      Article first published online: 14 NOV 2013 | DOI: 10.1002/adem.201300206

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      Emerging capability to fabricate well-defined, ordered lattice structures offers opportunity to create new energy absorption materials with previously unachieved properties. Metallic microlattices can be designed to maximize energy absorption while not transmitting a stress greater than the injury or damage threshold. The stress–strain response of different microlattice materials is characterized under quasi-static and dynamic loading and compared to state-of-the-art materials.

    2. Measuring and Simulating Acoustic Absorption of Open-Celled Metals (pages 284–288)

      Björn Hinze and Joachim Rösler

      Article first published online: 9 OCT 2013 | DOI: 10.1002/adem.201300048

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      Aircraft noise is of great importance for aircraft passengers and residents near airports. Excellent candidates as metal fiber felts or metal foams to absorb engine noise are experimentally investigated in acoustic absorption measurements. Additionally, the empirical Delany–Bazley model is applied to receive simulation results. The comparison of measured and simulated results shows good agreement.

    3. Mechanical Response and FEM Modeling of Porous Al under Static and Dynamic Loads (pages 289–294)

      N. Michailidis, E. Smyrnaios, G. Maliaris, F. Stergioudi and A. Tsouknidas

      Article first published online: 4 OCT 2013 | DOI: 10.1002/adem.201300039

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      Metal foams were produced to experimentally investigate their crush behavior and compare with computational results. The representation of the foam complex geometry is possible by employing Non Uniform Rational B-Splines (NURBS), allowing for a successful and fail-free volume discretization to finite elements. The foam geometry is produced by combining a parametric 3D Voronoi cell volume partitioning with sophisticated CAD algorithms.

    4. A Novel Approach for the Processing of Advanced Polymer Derived Ceramics with Carbon Nanotubes with the Help of Pores (pages 295–300)

      Niko Mantzel, Stefan Rannabauer, Ethel C. Bucharsky, Karl G. Schell, Michael J. Hoffmann and Michael Scheffler

      Article first published online: 4 SEP 2013 | DOI: 10.1002/adem.201300081

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      In a novel approach, a nickel-doped carbon rich preceramic polymer is converted into a carbon nanotubes (CNT) bearing polymer derived ceramic (PDC). Milling and field-assisted sintering demonstrate that the CNTs remained stable during processing, and the CNTs are found to be embedded in the PDC matrix.

  7. Full Papers

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    1. Functionalized Cellular Carbon-MgO Composites: From Interface Processing to Thermal Shock Resistant Low-Carbon MgO-C Refractories (pages 301–308)

      Wagner da Silveira and Guido Falk

      Article first published online: 17 OCT 2013 | DOI: 10.1002/adem.201300052

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      Cellular carbon matrices coated with functional SiC and YSZ layers and subsequent infiltration of MgO-periclase are offering interesting potential opportunities for innovative refractory materials addressing ecological and economical issues in low-carbon steel making industries. In this work, most efficient wet casting by specific colloidal processing routes is presented in order to tailor beneficial microstructural characteristics of these functionalized low-carbon MgO composites with cellular carbon matrix.

    2. Highly Porous Magnesium Alloy Structures and Their Properties Regarding Degradable Implant Application (pages 309–318)

      Ingrid Morgenthal, Olaf Andersen, Cris Kostmann, Günter Stephani, Thomas Studnitzky, Frank Witte and Bernd Kieback

      Article first published online: 11 NOV 2013 | DOI: 10.1002/adem.201300130

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      Magnesium alloys offer excellent properties with regard to application as degradable implant. The present study uses melt extracted magnesium fibers as the starting material for the sintering of highly porous magnesium bodies, i.e., from W4 and WZ21 alloys. Metallographic investigations show a very fine-grained microstructure which results in a lower corrosion rate of the high-purity, high-porous fiber structure compared to the ingot material.

    3. Technologies for Multilayered Scaffolds Suitable for Interface Tissue Engineering (pages 319–327)

      Patcharakamon Nooeaid, Judith A. Roether, Eva Weber, Dirk W. Schubert and Aldo R. Boccaccini

      Article first published online: 3 SEP 2013 | DOI: 10.1002/adem.201300072

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      Multilayered scaffolds based on alginate freeze-dried foam and alginate coated Bioglass®-based foam are developed as a promising candidate for osteochondral (cartilage–subchondral bone) tissue engineering. Two distinct phases are integrated by the application of alginate/Bioglass® hybrid adhesive, which maintained interfacial stability. Alginate foams provide high porosity, good interconnectivity, high water absorption, and sufficient mechanical properties. In addition, alginate coated Bioglass®-based scaffolds exhibit the basic features required for bone regeneration.

    4. Phononic Band Gaps in Periodic Cellular Materials (pages 328–334)

      Yvonne Liebold-Ribeiro and Carolin Körner

      Article first published online: 19 SEP 2013 | DOI: 10.1002/adem.201300064

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      We show that periodic cellular materials with specific band gaps can be designed by means of FEM eigenmode analysis. The gap width and gap position strongly dependent on the geometry of the basic-cell. Our results reveal that the first band gap is associated with collective periodic rotation motions, and confirm that the band gap behavior is governed by the properties of the single strut.

    5. Functionalized Metallic Hollow Sphere Structures (pages 335–339)

      Hartmut Goehler, Ulrike Jehring, Jens Meinert, Ralf Hauser, Peter Quadbeck, Kerstin Kuemmel, Guenter Stephani and Bernd Kieback

      Article first published online: 6 SEP 2013 | DOI: 10.1002/adem.201300057

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      Metal hollow spheres and metal hollow sphere structures are special types of cellular metals with an enormous application potential in structural and functional applications. Additional functionalizing is done by filling the spheres with ceramic powders or phase change materials. Furthermore, by coating the spheres with different ceramic layers new properties and functions are added. The structures show excellent mechanical damping properties as well as high heat capacity for thermal storage and fast heat loading and unloading. Grinding or ceramic coating bring more functions to the surface of the spheres.

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