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Publikācija: An Ice Track Equipped with Optical Sensors for Determining the Influence of Experimental Conditions on the Sliding Velocity

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Nosaukums oriģinālvalodā An Ice Track Equipped with Optical Sensors for Determining the Influence of Experimental Conditions on the Sliding Velocity
Pētniecības nozare 2. Inženierzinātnes un tehnoloģijas
Pētniecības apakšnozare 2.5. Materiālzinātne
Autori Jānis Lungevičs
Ernests Jansons
Kārlis-Agris Gross
Atslēgas vārdi ice friction, inclined plane, measurement approach, sliding on ice, sliding velocity, surface roughness
Anotācija The ability to slide on ice has previously focused on the measurement of friction coefficient rather than the actual sliding velocity that is affected by it. The performance can only be directly measured by the sliding velocity, and therefore the objective was to design and setup a facility to measure velo-city, and determine how experimental conditions affect it. Optical sensors were placed on an angled ice track to provide sliding velocity measurements along three sections and the velocity for the total sliding distance. Experimental conditions included the surface roughness, ambient temperature and load. The effect of roughness was best reported with a Criterion of Contact that showed a similar sliding velocity for metal blocks abraded with sand paper smoother than 600 grit. Searching for the effect of temperature, the highest sliding velocity coincided with the previously reported lowest coefficient of ice friction. Load showed the greatest velocity increase at temperatures closer to the ice melting point suggesting that in such conditions metal block overcame friction forces more easily than in solid friction. Further research needs to be conducted on a longer ice track, with larger metal surfaces, heavier loads and higher velocities to determine how laboratory experiments can predict real-life situations.
DOI: 10.2478/lpts-2018-0007
Hipersaite: https://www.degruyter.com/view/j/lpts.2018.55.issue-1/lpts-2018-0007/lpts-2018-0007.xml 
Atsauce Lungevičs, J., Jansons, E., Gross, K. An Ice Track Equipped with Optical Sensors for Determining the Influence of Experimental Conditions on the Sliding Velocity. Latvian Journal of Physics and Technical Sciences, 2018, Vol.55, No.1, 64.-75.lpp. ISSN 0868-8257. Pieejams: doi:10.2478/lpts-2018-0007
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