Kopal, Ivan

Lukáč, V.

Mokryšová, Martina

English

DSpace at VSB Technical University of Ostrava

I IN LI DJ I Sborník vědeckých prací Vysoké školy báňské - Technické univerzity Ostrava číslo 1, rok 2009, ročník LIi, řada hutnická článek č. 1428 BARROW TYRE PROFILE DEFLECTION M. MOKRYšovN·, v. LUKÁČ2, l. KOPAL1 1 Institute of Materials and Technological Research, Faculty of lndustrial Technologies, Alexander Dubfek University of Trentin; Púchov, Slovak Republic, contact author: mokrysova@lpt.tnunLsk 2 Etop Trading inc., Púchov, etop@etop.sk ABSTRACT: The paper deals with a curvature detection of a wheell;,arrow prototype. With the help of line laser profilometer the data in static regime were obtained. Measured data were processed by Matlab®. The displacement in axiál x - direction was determined. KEY WORDS: wheel, curvature detection, data processing /I 1. INTRODUCTIONThe contact-less measurements are in the trend also in a rubber industry. The works [1-5] deal with the optical measurements of a tyre. With the help of laser scanning it is possible to determine the tread depth of a tyre with a precision of O. I mm. The non-contact technique scans the whole tread. 2. EXPERIMENTAL PROCEDURE2.1 Line laser proftlometer The profilometer is used for profile and width determination of an object, with the help of line laser. The length oflaser trace determines the width and length of an object. The apparatus consists of laser module LLP 3-35 (A= 650 nm), CCD camera CB-3803S and PC. The real setup ofthe apparatus is shown on Fig. I. The deformation of an object is given by deformation of front laser wave. The connection between camera and PC is Framegrabber KaApaLAB. It serves for actual image transferring to PC in a real time. The device is helpful for profile determination at rubber, plastics textile materials especially. 2.2 Measurement Fig. I sh9-ws positioning of a line laser. A small tyre is virtually divided into 36 segments. We observed the part of a tyre with no lamellas. Segment No. I is considered to be reference one. It serves for comparison with oth.er segments in axial direction. The laser track designates the dependence of a number of segments vs. displacement. The width of laser tack (tyre's profile) is 60 mm. The track is automatically divided in 100 points/segments. ln principie, the displacement is scanned in every determined point. lt follows that a distance between them is 0.6 mm. The data are recorded every second, during 5 seconds. Usable data are obtained from average poinťs value of a displacement. After this operation we obtained 36 1-row matrixes corresponding t-0 tyre's segments between lamellas. 20 

Barrow tyre profile deflection

http://dspace.vsb.cz/bitstream/10084/71368/2/VSB%20HUF%202009-1_6_Mokrysova.pdf

Barrow tyre profile deflection

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