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Determination of the Young´s modulus of the epicuticle of the smooth adhesive organs of Carausius morosus using tensile testing

  • Adhesive organs like arolia of insects allow these animals to climb on different substrates by creating high adhesion forces. According to the Dahlquist criterion, arolia must be very soft exhibiting an effective Young's modulus of below 100 kPa to adhere well to different substrates. In previous studies the effective Young´s moduli of adhesive organs were determined using indentation tests yielding their structure to be very soft indeed. However, arolia show a layered structure, thus the values measured by indentation tests comprise the effective Young´s moduli of the whole organs. In this study, a new approach is illustrated to measure the Young´s modulus of the outermost layer of the arolium, i.e. of the epicuticle, of the stick insect Carausius morosus by tensile testing. Due to the inner fibrous structure of the arolium tensile tests allow the characterisation of the overlying epicuticle.

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Metadaten
Author:Michael Bennemann, Stefan Backhaus, Ingo Scholz, Daesung Park, Joachim Mayer, Werner Baumgartner
URN:urn:nbn:de:hbz:1010-opus4-7000
Parent Title (German):Konferenz: "Society for Experimental Biology (SEB)", 30. Juni - 1. Juli 2015 in Prag
Document Type:Conference Proceeding
Language:English
Date of Publication (online):2016/12/16
Year of first Publication:2015
Publishing Institution:Westfälische Hochschule Gelsenkirchen Bocholt Recklinghausen
Release Date:2017/01/04
Tag:Young´s modulus; adhesion; stick insects
GND Keyword:Bionik; Elastizitätsmodul; Gespenstschrecken; Haftorgan
Pagenumber:1
Departments / faculties:Fachbereiche / Maschinenbau Bocholt
Licence (German):License LogoCreative Commons - Namensnennung - Nicht kommerziell - Keine Bearbeitung

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