granular friction analyzer
Marko Bek (Avtor), Joamin Gonzalez-Gutierrez (Avtor), Jesús Alejandro Moreno López (Avtor), Dušan Bregant (Avtor), Igor Emri (Avtor)

Povzetek

Flow of granular materials is a complex process but it is important to measure, because the flow of granular material during processing, handling and transportation strongly influences the quality of the final product and its cost. Flowability of granular materials depends on the characteristics of the material and on the conditions at which flow is occurring. Existing methods of measuring flowability of powders are described in this paper, and a new methodology is introduced to measure friction between granular materials under pressure induced with uniaxial compression. Apparatus also allows analysis of conditions at which granular material starts to flow when exposed to uniaxial compressive load, i.e., zero-rate flowability. We call the apparatus the Granular Friction Analyzer (GFA). The concept of the GFA was tested by measuring four different materials with different average particle sizes. It was observed that as the particle size decreases so does its zero-rate flowability. This is in agreement with powder literature. Therefore, it can be concluded that in general the GFA method can be a very useful tool to study friction between granular materials and conditions at which the granular material flow initiates, i.e. zero-rate flowability of powders under pressure. However, further improvements are required to increase its sensitivity and accuracy.

Ključne besede

granular materials;inherent friction;zero-rate flowability;granular flow;metal powders;uniaxial compression;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FS - Fakulteta za strojništvo
UDK: 620.1:62-492-026.772(045)
COBISS: 14351899 Povezava se bo odprla v novem oknu
ISSN: 0032-5910
Št. ogledov: 1848
Št. prenosov: 599
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: granulirani materiali;kovinski prah;enoosna kompresija;pretočnost;inherentno trenje;pretočnost granuliranih materialov;
Vrsta dela (COBISS): Članek v reviji
Konec prepovedi (OpenAIRE): 2018-01-31
Strani: str. 255-265
Zvezek: ǂVol. ǂ288
Čas izdaje: Jan. 2016
DOI: 10.1016/j.powtec.2015.11.014
ID: 10991292