Investigation of sandstone erosion by continuous and pulsed water jets

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F19%3A00504926" target="_blank" >RIV/68145535:_____/19:00504926 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60460709:41310/19:79251

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1526612518313525?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1526612518313525?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jmapro.2019.04.035" target="_blank" >10.1016/j.jmapro.2019.04.035</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Investigation of sandstone erosion by continuous and pulsed water jets

Popis výsledku v původním jazyce

The study compares the sandstone erosion manifestations (depth, width, and volume of the removed material)ncaused by continuous and pulsed water jets (WJs) with a frequency f=20 kHz and 40 kHz. The WJ head followsnan inclined trajectory at an angle of 45° to the horizontal surface. The starting point of the head was positioned 5nmm above the sandstone surface. The traverse speed of the head was varied from v = 0.25 mm/s to 1 mm/s. Thenstructural changes and plastic deformation caused by the mechanical effect of the continuous and pulsed WJsnwere analysed using SEM and optical profilometer. The results showed that an optimal standoff distance wasnresponsible for the maximum erosion effect under both continuous and pulsed regimes. The PWJ at f= 40 kHznshowed better erosion performance in terms of depth (6.8 mm), width (6.83 mm) and volume removedn(27.31mm3) as compared to PWJ at f=20 kHz and CWJ. The microstructural topography at varying standoffndistance (z=10 mm to 45 mm) showed erosion features such as micro-pits, cracks, perforated holes responsiblenfor different erosion stages. On-line monitoring via means of acoustic emission was measured to evaluate thenerosion phenomenon on the sandstone surface during the impact of the PWJ and CWJ. The correlation betweennthe acoustic emission results and the erosion parameters showed the progression of the erosion process underndifferent technological conditions.

Název v anglickém jazyce

Investigation of sandstone erosion by continuous and pulsed water jets

Popis výsledku anglicky

The study compares the sandstone erosion manifestations (depth, width, and volume of the removed material)ncaused by continuous and pulsed water jets (WJs) with a frequency f=20 kHz and 40 kHz. The WJ head followsnan inclined trajectory at an angle of 45° to the horizontal surface. The starting point of the head was positioned 5nmm above the sandstone surface. The traverse speed of the head was varied from v = 0.25 mm/s to 1 mm/s. Thenstructural changes and plastic deformation caused by the mechanical effect of the continuous and pulsed WJsnwere analysed using SEM and optical profilometer. The results showed that an optimal standoff distance wasnresponsible for the maximum erosion effect under both continuous and pulsed regimes. The PWJ at f= 40 kHznshowed better erosion performance in terms of depth (6.8 mm), width (6.83 mm) and volume removedn(27.31mm3) as compared to PWJ at f=20 kHz and CWJ. The microstructural topography at varying standoffndistance (z=10 mm to 45 mm) showed erosion features such as micro-pits, cracks, perforated holes responsiblenfor different erosion stages. On-line monitoring via means of acoustic emission was measured to evaluate thenerosion phenomenon on the sandstone surface during the impact of the PWJ and CWJ. The correlation betweennthe acoustic emission results and the erosion parameters showed the progression of the erosion process underndifferent technological conditions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/LO1406" target="_blank" >LO1406: Institut čistých technologií těžby a užití energetických surovin - Projekt udržitelnosti</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Manufacturing Processes

ISSN

1526-6125

e-ISSN

—

Svazek periodika

42

Číslo periodika v rámci svazku

June 2019

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

121-130

Kód UT WoS článku

000470952200013

EID výsledku v databázi Scopus

2-s2.0-85065089235