Influence of counterface roughness on friction properties of engineering plastics for bearing applications

Quaglini, Virginio; Dubini, Paolo; Ferroni, Daniela; Poggi, Carlo

doi:10.1016/j.matdes.2008.07.025

Cited by 59 publications

(58 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Namely, when the polymer melts, its friction tends to decrease according to a mechanism of "thermal control of friction" [24]. This phenomenon was additionally supported by Quagliny et al [12]. Quagliny et al noticed that when the melting temperature of the polymer was reached, the generated heat melted additional polymer rather than causing a rise in the temperature of the already molten polymer.…”

Section: Wear Surfacesmentioning

confidence: 94%

“…The load value of the tribological pair was controlled by the force sensor (4) placed between the pneumatic actuator and the sample holder (3). Measurement of the specimen displacement with respect to the counter specimen was carried out via an LVDT5 type inductive displacement sensor (12). This made it possible to measure the wear of the sample to the nearest 0.001 mm.…”

Section: Methodsmentioning

confidence: 99%

“…The evaluation of the functional features of the polymers is made on the basis of parameters describing their properties, such as the value of the coefficient of friction, the wear rate, the permissible operating temperature, and chemical resistance to materials with which they make contact. A major problem in the selection of the polymer is to determine the type of wear to which it will be subjected during operation, because depending on the type of material and loads, the wear process may occur in different ways [12,13].…”

mentioning

confidence: 99%

See 2 more Smart Citations

Friction coefficient and wear resistance of a modified polypropylene impregnated with different oils

2016

View full text Add to dashboard Cite

Section: Wear Surfacesmentioning

confidence: 94%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Friction coefficient and wear resistance of a modified polypropylene impregnated with different oils

2016

View full text Add to dashboard Cite

“…(8) is used to rotate the shaft (1). The shafts of tested bearing and electric motor are connected with an elastic coupling (6). Electric motor stator is fixed with a tie rod to the elastic beam (7) free side.…”

Section: Experimental Test Bench Descriptionmentioning

confidence: 99%

“…Two types of balls are used, steel and ceramic and obtained results shows greater resistance of the ceramic balls. The effects of roughness upon friction of the plastics, intended for bearing applications are studied in [6]. Obtained results shows that not exists an optimal roughness for minimum friction for polymers and the friction depends on the bulk properties of the polymer.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical study of friction torque from radial ball bearings

Geonea

Dumitru

2017

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Abstract. In this paper it is presented a numerical simulation and an experimental study of total friction torque from radial ball bearings. For this purpose it is conceived a virtual CAD model of the experimental test bench for bearing friction torque measurement. The virtual model it is used for numerical simulation in Adams software, that allows dynamic study of multi-body systems and in particularly with facility Adams Machinery of dynamic behavior of machine parts. It is manufactured an experimental prototype of the test bench for radial ball bearings friction torque measurement. In order to measure the friction torque of the tested bearings it is used an equal resistance elastic beam element, with strain gauge transducer to measure bending deformations. The actuation electric motor of the bench has the shaft mounted on two bearings and the motor housing is fixed to the free side of the elastic beam, which is bended by a force proportional with the total friction torque. The beam elastic element with strain gauge transducer is calibrated in order to measure the force occurred. Experimental determination of the friction torque is made for several progressive radial loads. It is established the correlation from the friction torque and bearing radial load. The bench allows testing of several types and dimensions of radial bearings, in order to establish the bearing durability and of total friction torque. IntroductionIn the literature are presented a large number of studies concerning the friction, lubrication and wear of materials. Test procedures for experimental measuring for the friction torque in rolling bearings are presented in [1]. For this purpose it is used a modified four ball machine, in order to test rolling bearings. It is monitored the friction torque and operating temperature. Other research [2] examines the frictional power loss of a needle roller bearing lubricated with grease. Obtained results reveal that the test bearing has higher friction compared with bearings lubricated with conventional lubrication. Low cost systems for the force and torque measurement, for wheel bearings are presented in [3]. Also, a study for the friction of a ball screw is presented in [4]. It is presented a theoretical model for the friction between balls of the screw. The study is useful because provides a theory support for reasonably reducing the screw ball friction. Studies based on the lubrication theory are presented in [5]. It is studied the wear behavior, using a four ball wear tester. Tests are made with a low viscosity additivated mineral oil. Two types of balls are used, steel and ceramic and obtained results shows greater resistance of the ceramic balls. The effects of roughness upon friction of the plastics, intended for bearing applications are studied in [6]. Obtained results shows that not exists an optimal roughness for minimum friction for polymers and the friction depends on the bulk properties of the polymer.

show abstract

Contact mechanics and tribology of polymer composites

Мышкин¹,

Kovalev

Spaltman

et al. 2013

J of Applied Polymer Sci

View full text Add to dashboard Cite

We review contact mechanics with emphasis on the rheological (time dependent) properties of polymers and their relations to surface roughness, material properties, and friction as well as wear behavior of rubbing polymer surfaces. The main concept of polymer mechanics related to tribology consists of three basic elements involved in friction: deformation resulting in the real area of contact of rough surfaces, contact adhesion, and shear and rupture of materials in the contact during the sliding friction. The results of classical work are included, which addresses the real contact area calculation and the description of adhesion interaction between rough surfaces. A brief review of experimental investigations concerning the surface characterization by means of bearing curves, the intermolecular force interaction using the adhesion parameter, the effect of temperature on the real contact area, the formation of transferred polymer film during friction, and tribological behavior of ultrathin polymer layers are presented and their implications discussed. V C 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2014, 131, 39870.

show abstract

Influence of counterface roughness on friction properties of engineering plastics for bearing applications

Cited by 59 publications

References 16 publications

Friction coefficient and wear resistance of a modified polypropylene impregnated with different oils

Friction coefficient and wear resistance of a modified polypropylene impregnated with different oils

Experimental and theoretical study of friction torque from radial ball bearings

Contact mechanics and tribology of polymer composites

Contact Info

Product

Resources

About