Experimental bench for studying the relation between the dynamic characteristics of the frictional motion and the electric potential at the surface of polymer slabs in sliding conformal contact.pdfVIP

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Experimental bench for studying the relation between the dynamic characteristics of the frictional motion and the electric potential at the surface of polymer slabs in sliding conformal contact.pdf

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Experimental bench for studying the relation between the dynamic characteristics of the frictional motion and the electric potential at the surface of polymer slabs in sliding conformal contact.pdf

Tribology International 111 (2017) 107–115 Contents lists available at ScienceDirect Tribology International journal homepage: /locate/triboint Experimental bench for studying the relation between the dynamic characteristics of the frictional motion and the electric potential at the surface of polymer slabs in sliding conformal contact Bogdan Neagoea, Horia-Nicolai Teodorescub, Yopa Prawatyaa, Lucian Dascalescua,?, Thami Zeghloula a PPRIME Institute, CNRS – University of Poitiers – ENSMA, 4 av. Varsovie, 16021 Angoulême, France b Technical University of Iassy, Romania MARK ARTICLE INFO Keywords: Triboelectric e?ect Sliding conformal-contact Test-bench Polymers Condition monitoring Signal processing Electrostatic charge ABSTRACT Quantifying the triboelectric charging that occurs at polymer-on-polymer contact is crucial in the appropriate design of sliding or rolling components of various mechanisms. The paper describes the key devices and instrumentation of a laboratory bench developed for the accurate study of the tribocharging characteristics of polymer slabs in frictional sliding conformal contact. The bench enables the adjustment of several factors that a?ect the electrostatic charge generation (relative sliding speed, normal contact force, and number of back-andforth cycles), and is equipped with sensors for the continuous monitoring of sample displacement, as well as of both normal and tangential forces. The triboelectric charge is evaluated by non-contact 2-D mapping of the electric potential at the surface of the samples at the end of the frictional process. The experimental methodology includes appropriate ?ltering of the signals provided by the sensors, before being recorded and interpreted. The cartography of the surface potential is put in relation with the dynamic characteristics of the frictional motion. The e?ectiveness of the laboratory bench is illustrated by the study of the electric potential generated by frictional sliding conformal contact betwee