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Innovation application: A Device for Measurements of Sliding Properties

Title A Device for Measurements of Sliding Properties

The working principle of devices for measuring static friction coefficient and sliding properties of various materials is based on an adjustable inclined plane that is equipped with additional optical sensors. The sensors allow to measure time that is necessary for the sample to slide specific distance down the plane. The measured time or from it calculated velocity can be used to compare slidability of differently modified surfaces on various base materials, including ice.

Keywords friction coefficient, sliding, sliding properties
Authors Jānis Lungevičs
Ernests Jansons
Kārlis-Agris Gross
Klāvs Stiprais
Department (25300) Mašīnbūves tehnoloģijas institūts
Statistical Classification of Economic Activities, NACE 2 Scientific research and development
Description of the technology

The measurement method provides following information about investigated sample: sliding time of the overall distance, sliding times for all distances between optical sensors and instantaneous sliding speed for at least four overall distance stages.

Fig. 1. The device for measurements of sliding properties.

The device (see Fig. 1) consists of a rack (1), inclined plane (2), angle adjustment unit (3), Optical sensors (5), inclined plane locking units (6) and sample capture / activation units (6). The invention allows to perform measurements with minimal operator involvement.

Applications Application is mainly related to friction pair metal – ice slip property investigation, but it can equally be applied to other material friction pair slip property investigation on a variety of substrate materials i.e. polymers – ice, metal – metal, etc

The device allows to make ice friction investigation. It can achieve better detection of influence of different parameters on sliding properties than other measurement methods.

Technology Readiness Level Actual system proven in operational environment
Partnership offer • Equipment purchase contracts. • Service contracts.
  • LV 15305
ID 141
Contact information email: santa.puskarjova@rtu.lv and ilmars.viksne@rtu.lv; phone number: +371 29373757 un +371 29187403