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  <doc>
    <id>2897</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>23</pageFirst>
    <pageLast>38</pageLast>
    <pageNumber/>
    <edition/>
    <issue>2</issue>
    <volume>75</volume>
    <type>article</type>
    <publisherName>Georgian Technical University</publisherName>
    <publisherPlace>Tbilisi</publisherPlace>
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    <title language="eng">An approach to a form-adaptive compliant gripper element based on magneto-sensitive elastomers with a bioinspired sensorized surface</title>
    <parentTitle language="eng">Problems of Mechanics</parentTitle>
    <identifier type="issn">1512-0740</identifier>
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    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Klaus Zimmermann</author>
    <author>Jhohan Harvey Chavez Vega</author>
    <author>Tatiana I. Becker</author>
    <author>Hartmut Witte</author>
    <author>Cornelius Schilling</author>
    <author>Sebastian Köhring</author>
    <author>Valter Böhm</author>
    <author>Gareth J. Monkman</author>
    <author>Nina Prem</author>
    <author>Dirk Sindersberger</author>
    <author>I. I. Lutz</author>
    <author>Lukas Merker</author>
    <collection role="institutes" number="FakEI">Fakultät Elektro- und Informationstechnik</collection>
    <collection role="institutes" number="FAKMB">Fakultät Maschinenbau</collection>
    <collection role="othforschungsschwerpunkt" number="16317">Sensorik</collection>
    <collection role="institutes" number="">Labor Finite-Elemente-Methode (FEM)</collection>
    <collection role="institutes" number="">Mechatronics Research Unit (MRU)</collection>
  </doc>
  <doc>
    <id>2542</id>
    <completedYear/>
    <publishedYear>2020</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1263</pageFirst>
    <pageLast>1290</pageLast>
    <pageNumber/>
    <edition/>
    <issue>11</issue>
    <volume>7</volume>
    <type>article</type>
    <publisherName>de Gruyter</publisherName>
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    <title language="eng">Actuators based on a controlled particle-matrix interaction in magnetic hybrid materials for applications in locomotion and manipulation systems</title>
    <abstract language="eng">The paper deals with the investigation of magneto-sensitive elastomers (MSE) and their application in technical actuator systems. MSE consist of an elastic matrix containing suspended magnetically soft and/or hard particles. Additionally, they can also contain silicone oil, graphite particles, thermoplastic components, etc., in various concentrations in order to tune specific properties such as viscosity, conductivity and thermoelasticity, respectively. The focuses of investigations are the beneficial properties of MSE in prototypes for locomotion and manipulation purposes that possess an integrated sensor function. The research follows the principle of a model-based design, i.e. the working steps are ideation, mathematical modelling, material characterization as well as building first functional models (prototypes). The developed apedal (without legs) and non-wheeled locomotion systems use the interplay between material deformations and the mechanical motion in connection with the issues of control and stability. Non-linear friction phenomena lead to a monotonous forward motion of the systems. The aim of this study is the design of such mechanical structures, which reduce the control costs. The investigations deal with the movement and control of ‘intelligent’ mechanisms, for which the magnetically field-controlled particle-matrix interactions provide an appropriate approach. The presented grippers enclose partially gripped objects, which is an advantage for handling sensitive objects. Form-fit grippers with adaptable contour at the contact area enable a uniform pressure distribution on the surface of gripped objects. Furthermore, with the possibility of active shape adaptation, objects with significantly differing geometries can be gripped. To realise the desired active shape adaptation, the effect of field-induced plasticity of MSE is used. The first developed prototypes mainly confirm the functional principles as such without direct application. For this, besides the ability of locomotion and manipulation itself, further technological possibilities have to be added to the systems. The first steps are therefore being taken towards integrated MSE based adaptive sensor systems.</abstract>
    <parentTitle language="eng">Physical Sciences Reviews</parentTitle>
    <identifier type="doi">10.1515/psr-2019-0087</identifier>
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    <licence>Creative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International</licence>
    <author>Jhohan Harvey Chavez Vega</author>
    <author>Valter Böhm</author>
    <author>Tatiana I. Becker</author>
    <author>Simon Gast</author>
    <author>Igor Zeidis</author>
    <author>Klaus Zimmermann</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>apedal locomotion systems</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>field-controlled particle-matrix interaction</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>field-induced plasticity</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>form-fit gripper</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>integrated sensor-actuator systems</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>magneto-sensitive elastomer</value>
    </subject>
    <collection role="institutes" number="FAKMB">Fakultät Maschinenbau</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="oaweg" number="">Hybrid Open Access - OA-Veröffentlichung in einer Subskriptionszeitschrift/-medium</collection>
    <collection role="institutes" number="">Labor Finite-Elemente-Methode (FEM)</collection>
  </doc>
  <doc>
    <id>2855</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>133</pageFirst>
    <pageLast>152</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>89</volume>
    <type>article</type>
    <publisherName>Springer Nature</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
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    <title language="eng">Magnetic-field-controlled mechanical behavior of magneto-sensitive elastomers in applications for actuator and sensor systems</title>
    <abstract language="eng">The development of actuator and sensor systems with complex adaptive behavior and operating sensitivity is one of the actual scientific challenges. Smart materials like magneto-sensitive elastomers (MSEs) offer great potential for designing such intelligent devices, because they possess unique magnetic-field-dependent properties. The present paper deals with investigations of the free and forced vibrational behavior displayed by cantilever beams of MSEs containing magnetically soft particles in a uniform magnetic field. It is shown experimentally as well as theoretically that the first bending eigenfrequency of MSE beams depends strongly on the strength of an applied magnetic field. The proposed magneto-mechanical model is based on the vibrational dynamics of thin rods and predicts reliably the amplitude–frequency characteristics depending on the geometric configuration of the MSE and its material parameters. It is found that the vibration response of an MSE beam under kinematic excitation of its base can be modified indirectly by a magnetic field control due to the change of the vibration characteristics. As a result, the resonance can occur in different ranges of the excitation frequency. The dependencies of the amplification ratio on the excitation frequency are obtained experimentally and compared with the result provided by the theoretical model. Moreover, investigations on the potential use of the field-induced plasticity effect of MSEs in form-fit gripper applications are presented. This effect can be used to realize shape adaptable system parts. It is found that the mechanical properties of each component and its concentration within the mixture have an impact on the mechanical behavior of the whole MSE compound. Such parameters as the strength of magnetic field and geometry of the MSE sample have influence on the quality of shape adaptation. The evidence presented provides a good basis for the realization of MSE-based actuator and sensor systems with adaptable sensitivity.</abstract>
    <parentTitle language="eng">Archive of Applied Mechanics</parentTitle>
    <identifier type="doi">10.1007/s00419-018-1477-4</identifier>
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    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Tatiana I. Becker</author>
    <author>Valter Böhm</author>
    <author>Jhohan Harvey Chavez Vega</author>
    <author>Stefan Odenbach</author>
    <author>Yuriy L. Raikher</author>
    <author>Klaus Zimmermann</author>
    <collection role="institutes" number="FAKMB">Fakultät Maschinenbau</collection>
    <collection role="othforschungsschwerpunkt" number="16317">Sensorik</collection>
    <collection role="institutes" number="">Labor Finite-Elemente-Methode (FEM)</collection>
  </doc>
  <doc>
    <id>4557</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>653</pageFirst>
    <pageLast>680</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>bookpart</type>
    <publisherName>De Gruyter</publisherName>
    <publisherPlace>Berlin</publisherPlace>
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    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
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    <title language="eng">Actuators based on a controlled particlematrix interaction in magnetic hybrid materials for applications in locomotion and manipulation systems</title>
    <abstract language="deu">The paper deals with the investigation of magneto-sensitive elastomers(MSE) and their application in technical actuator systems. MSE consist of an elasticmatrix containing suspended magnetically soft and/or hard particles. Additionally,they can also contain silicone oil, graphite particles, thermoplastic components, etc.,in various concentrations in order to tune specific properties such as viscosity, con-ductivity and thermoelasticity, respectively. The focuses of investigations are thebeneficial properties of MSE in prototypes for locomotion and manipulation purposesthat possess an integrated sensor function. The research follows the principle of amodel-based design, i.e. the working steps are ideation, mathematical modelling,material characterization as well as building first functional models (prototypes). Thedeveloped apedal (without legs) and non-wheeled locomotion systems use the inter-play between material deformations and the mechanical motion in connection with theissues of control and stability. Non-linear friction phenomena lead to a monotonousforward motion of the systems. The aim of this study is the design of such mechanicalstructures, which reduce the control costs. The investigations deal with the movementand control of‘intelligent’mechanisms, for which the magnetically field-controlledparticle-matrix interactions provide an appropriate approach. The presented grippersenclose partially gripped objects, which is an advantage for handling sensitive objects.Form-fit grippers with adaptable contour at the contact area enable a uniform pressuredistribution on the surface of gripped objects. Furthermore, with the possibility ofactive shape adaptation, objects with significantly differing geometries can be gripped.To realise the desired active shape adaptation, the effect of field-induced plasticity ofMSE is used. The first developed prototypes mainly confirm the functional principles assuch without direct application. For this, besides the ability of locomotion andmanipulation itself, further technological possibilities have to be added to the systems.</abstract>
    <parentTitle language="eng">Magnetic Hybrid-Materials: Multi-scale modelling synthesis and applications</parentTitle>
    <identifier type="isbn">9783110569636</identifier>
    <identifier type="doi">10.1515/9783110569636-027</identifier>
    <note>Zuerst erschienen in: Physical Sciences Reviews, 2020, pp. 20190087</note>
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    <licence>Creative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International</licence>
    <author>Jhohan Harvey Chavez Vega</author>
    <author>Valter Böhm</author>
    <author>Tatiana I. Becker</author>
    <author>Simon Gast</author>
    <author>Igor Zeidis</author>
    <author>Klaus Zimmermann</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>apedal locomotion systems</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>field-controlled particle-matrix interaction</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>field-induced plasticity</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>form-fit gripper</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>integrated sensor-actuator systems</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>magneto-sensitive elastomer</value>
    </subject>
    <collection role="institutes" number="FAKMB">Fakultät Maschinenbau</collection>
    <collection role="othforschungsschwerpunkt" number="16316">Produktion und Systeme</collection>
    <collection role="institutes" number="">Labor Finite-Elemente-Methode (FEM)</collection>
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    <publishedYear>2018</publishedYear>
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    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
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    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Field induced plasticity of magneto-sensitive elastomers for gripping technology applications</title>
    <parentTitle language="eng">6th Colloquium of SPP 1681, Benediktbeuern, 26. - 28.09.2018 : Book of Abstracts</parentTitle>
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    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Jhohan Harvey Chavez Vega</author>
    <author>Valter Böhm</author>
    <author>J. Yin</author>
    <author>Tatiana I. Becker</author>
    <author>Sebastian Köhring</author>
    <author>Gareth J. Monkman</author>
    <author>Stefan Odenbach</author>
    <author>Klaus Zimmermann</author>
    <collection role="institutes" number="FakEI">Fakultät Elektro- und Informationstechnik</collection>
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    <publishedYear>2018</publishedYear>
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    <completedDate>--</completedDate>
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    <title language="eng">Magneto-active elastomer as viscoelastic foundation material for artificial tactile sensors with tuneable properties</title>
    <parentTitle language="eng">Book of Abstracts of the 16th German Ferrofluid Workshop, Braunschweig, 18.-20.07.2018</parentTitle>
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    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Jhohan Harvey Chavez Vega</author>
    <author>Valter Böhm</author>
    <author>Moritz Scharff</author>
    <author>Nina Prem</author>
    <author>Gareth J. Monkman</author>
    <author>Tatiana I. Becker</author>
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    <collection role="institutes" number="">Mechatronics Research Unit (MRU)</collection>
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