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Imaging the stick–slip peeling of an adhesive tape under a constant load

Pierre-Philippe Cortet1, Matteo Ciccotti2 and Loïc Vanel1

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Using a high speed camera, we study the peeling dynamics of an adhesive tape under a constant load with a special focus on the so-called stick–slip regime of the peeling. It is the first time that the very fast motion of the peeling point has been imaged. The speed of the camera, up to 16 000 fps, allows us to observe and quantify the details of the peeling point motion during the stick and slip phases: stick and slip velocities, durations and amplitudes. First, in contrast with previous observations, the stick–slip regime appears to be only transient in the force controlled peeling. Additionally, we discover that the stick and slip phases have similar durations and that at high mean peeling velocity, the slip phase actually lasts longer than the stick phase. Depending on the mean peeling velocity, we also observe that the velocity change between stick and slip phases ranges from a rather sudden to a smooth transition. These new observations can help to discriminate between the various assumptions used in theoretical models for describing the complex peeling of an adhesive tape. The present imaging technique opens the door to an extensive study of the velocity controlled stick–slip peeling of an adhesive tape that will allow us to understand the statistical complexity of the stick–slip in a stationary case.


Keywords

polymer dynamics

dynamical processes (experiment)

viscoelasticity (experiment)

fracture (experiment)

PACS

62.20.-x Mechanical properties of solids

68.35.Np Adhesion

78.47.-p Spectroscopy of solid state dynamics

64.70.K- Solid–solid transitions

MSC

82D20 Solids

74Nxx Phase transformations in solids (See also 74A50, 80Axx, 82B26, 82C26)

Subjects

Condensed matter: electrical, magnetic and optical

Surfaces, interfaces and thin films

Condensed matter: structural, mechanical & thermal

Dates

Issue 03 (March 2007)

Received 22 December 2006, accepted for publication 9 February 2007

Published 5 March 2007



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