Standoff distance in ultrasonic pulsating water jet

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F21%3A00537245" target="_blank" >RIV/68145535:_____/21:00537245 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/1996-1944/14/1/88/htm" target="_blank" >https://www.mdpi.com/1996-1944/14/1/88/htm</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma14010088" target="_blank" >10.3390/ma14010088</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Standoff distance in ultrasonic pulsating water jet

Popis výsledku v původním jazyce

The water hammer effect is the basis of technologies which is artificially responsible forthe decay of continuous jets. A recently developed technique enhances the pressure fluctuationsusing an acoustic chamber, leading to enhanced erosion effects for various water volume flow rates.The optimum standoff distance for an ultrasonic enhanced water jet is not appropriately estimatedusing an inclined trajectory. The objective of this study is to comprehend the true nature of theinteraction of the standoff distance following the stair trajectory and traverse speed of the nozzle onthe erosion depth. Additionally, it also critically compares the new method (staircase trajectory) thatobeys the variation in frequency of the impingements for defined volume flow rates with the inclinedtrajectory. In this study, at constant pressure (p= 70 MPa), the role of impingement distribution withthe variation of traverse speed (v= 5–35 mm/s) along the centerline of the footprint was investigated.The maximum erosion depth corresponding to each traverse speed is observed at approximatelysame standoff distance (65±5 mm) and decreases with the increment in traverse speed (h= 1042 and47μm atv= 5 and 35 mm/s, respectively). The results are attributed to the variation in the numberof impingements per unit length. The surface and morphology analysis of the cross-section usingSEM manifested the presence of erosion characteristics (micro-cracks, cavities, voids, and upheavedsurface). By varying the water cluster, different impingement densities can be achieved that aresuitable for technological operations such as surface peening, material disintegration, or surfaceroughening

Název v anglickém jazyce

Standoff distance in ultrasonic pulsating water jet

Popis výsledku anglicky

The water hammer effect is the basis of technologies which is artificially responsible forthe decay of continuous jets. A recently developed technique enhances the pressure fluctuationsusing an acoustic chamber, leading to enhanced erosion effects for various water volume flow rates.The optimum standoff distance for an ultrasonic enhanced water jet is not appropriately estimatedusing an inclined trajectory. The objective of this study is to comprehend the true nature of theinteraction of the standoff distance following the stair trajectory and traverse speed of the nozzle onthe erosion depth. Additionally, it also critically compares the new method (staircase trajectory) thatobeys the variation in frequency of the impingements for defined volume flow rates with the inclinedtrajectory. In this study, at constant pressure (p= 70 MPa), the role of impingement distribution withthe variation of traverse speed (v= 5–35 mm/s) along the centerline of the footprint was investigated.The maximum erosion depth corresponding to each traverse speed is observed at approximatelysame standoff distance (65±5 mm) and decreases with the increment in traverse speed (h= 1042 and47μm atv= 5 and 35 mm/s, respectively). The results are attributed to the variation in the numberof impingements per unit length. The surface and morphology analysis of the cross-section usingSEM manifested the presence of erosion characteristics (micro-cracks, cavities, voids, and upheavedsurface). By varying the water cluster, different impingement densities can be achieved that aresuitable for technological operations such as surface peening, material disintegration, or surfaceroughening

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

2021

Kód důvěrnosti údajů

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

Název periodika

Materials

ISSN

1996-1944

e-ISSN

—

Svazek periodika

14

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

18

Strana od-do

88

Kód UT WoS článku

000606122600001

EID výsledku v databázi Scopus

2-s2.0-85098848559