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Analysis of Bending in Partially Bonded Structures of Electroadhesive Polymers

Arguero, Carlos (2017) Analysis of Bending in Partially Bonded Structures of Electroadhesive Polymers. Master's Thesis, University of Pittsburgh. (Unpublished)

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Electroadhesive polymers are a variety of polymers that experience attractive forces under applied voltages and currents. By arranging these polymers in a layered beam-type structure, these attractive forces can be exploited to create an increase in effective bending stiffness. In such a structure, the effective stiffness depends on the electrical signal being applied; when no voltage is present, for example, the structure behaves simply as a stack of inert polymers, analogous to multiple unbonded beams. However, as the applied voltage increases, the effective stiffness increases measurably. In theory, the stiffness would continue to increase with respect to voltage until the structure performed as if it were a single beam of uniform composition. While this increase in performance would suggest many useful applications of such materials, the precise nature of this behavior is unknown. Of particular interest is how the stiffness increases during the ‘intermediate’ composite-beam stage, i.e. before the uniform-beam performance threshold is reached. Characterization of this intermediate voltage-stiffness relationship forms the basis of this thesis. The first analysis is an extension of ‘first principles,’ and is based wholly on applying simple mechanics of beams to empirical results. Following this initial analysis, a more detailed exploration of available literature attempts to survey available theories and methods for measuring stiffness in partially-bonded beam structures. Finally, the most promising of the available methods is/are selected for further experimental analysis, and suggestions are put forward as a basis for future work.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Arguero, Carloscra29@pitt.educra29
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Thesis AdvisorClark,
Committee MemberVipperman,
Committee MemberMeyer,
Date: 25 September 2017
Date Type: Publication
Defense Date: 24 July 2017
Approval Date: 25 September 2017
Submission Date: 24 July 2017
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 74
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Mechanical Engineering
Degree: MSME - Master of Science in Mechanical Engineering
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: Polymers, Electroadhesion, Bending
Additional Information: This is the finalized version of the thesis approved by the defense committee.
Date Deposited: 25 Sep 2017 20:53
Last Modified: 25 Sep 2017 20:53


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