title: Intermittent stick-slip dynamics during the peeling of an adhesive tape from a roller.
abstract: We study experimentally the fracture dynamics during the peeling at a constant velocity of a roller adhesive tape mounted on a freely rotating pulley. Thanks to a high speed camera, we measure, in an intermediate range of peeling velocities, high frequency oscillations between phases of slow and rapid propagation of the peeling fracture. This so-called stick-slip regime is well known as the consequence of a decreasing fracture energy of the adhesive in a certain range of peeling velocity coupled to the elasticity of the peeled tape. Simultaneously with stick slip, we observe low frequency oscillations of the adhesive roller angular velocity which are the consequence of a pendular instability of the roller submitted to the peeling force. The stick-slip dynamics is shown to become intermittent due to these slow pendular oscillations which produce a quasistatic oscillation of the peeling angle while keeping constant the peeling fracture velocity (averaged over each stick-slip cycle). The observed correlation between the mean peeling angle and the stick-slip amplitude questions the validity of the usually admitted independence with the peeling angle of the fracture energy of adhesives.
authors.affiliation: Laboratoire FAST, CNRS, Univ Paris Sud, UPMC Univ Paris 06, France.
authors.forename: Pierre-Philippe
authors.initials: PP
authors.lastname: Cortet
authors.forename: Marie-Julie
authors.initials: MJ
authors.lastname: Dalbe
authors.forename: Claudia
authors.initials: C
authors.lastname: Guerra
authors.forename: Caroline
authors.initials: C
authors.lastname: Cohen
authors.forename: Matteo
authors.initials: M
authors.lastname: Ciccotti
authors.forename: Stéphane
authors.initials: S
authors.lastname: Santucci
authors.forename: Loïc
authors.initials: L
authors.lastname: Vanel
mesh_terms: D000268:Adhesiveness; D000269:Adhesives / Q000737:chemistry*; D003198:Computer Simulation; D017276:Friction; D008567:Membranes, Artificial; D008956:Models, Chemical; D053832:Surgical Tape
chemical_list: D000269:Adhesives; D008567:Membranes, Artificial