Acoustic chamber length performance analysis in ultrasonic pulsating waternjet erosion of ductile material

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F19%3A00509805" target="_blank" >RIV/68145535:_____/19:00509805 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1526612519303366" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1526612519303366</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jmapro.2019.10.008" target="_blank" >10.1016/j.jmapro.2019.10.008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Acoustic chamber length performance analysis in ultrasonic pulsating waternjet erosion of ductile material

Popis výsledku v původním jazyce

Ultrasonic pulsating water jets are a technological modification of water jet technologies that disintegrate materials at pressures ≤100 MPa. Disintegration occurs at a non-systematically determined standoff distance z [mm] as a result of variable axial jet speeds determined by the acoustic chamber length. Water velocity fluctuations are converted from pressure fluctuations present in the acoustic chamber using a nozzle. Pressure fluctuations are generated by an ultrasonic sonotrode with a frequency of 20 kHz. The impulse travels through the acoustic chamber, which is geometrically designed to vary its length from 0 mm to 25 mm with a mechanical nut. A PWJ system can be tuned within this interval to achieve the desired PWJ performance. Until now, the synergic effects of the standoff distance z [mm] and the acoustic chamber length lc [mm] on material interactions have not been clarified in the literature. Therefore, this study discusses how the length of the acoustic chamber lc is related to the nozzle's standoff distance z [mm] from the surface of the material and from the point of achieved maximal depth h [mm]. The length of the chamber was gradually increased by one millimetre from 5 to 22 mm. Subsequently, PWJs with p = 30 MPa and 40 MPa were tested. The robot arm carrying the nozzle head travelled along a programmed trajectory at an angle of 16° starting from z = 5 mm with a traverse speed v = 5 mm/s. It has been found that the effect of acoustic chamber length on the disintegration within an erosion interval has a hyperbolic course.

Název v anglickém jazyce

Acoustic chamber length performance analysis in ultrasonic pulsating waternjet erosion of ductile material

Popis výsledku anglicky

Ultrasonic pulsating water jets are a technological modification of water jet technologies that disintegrate materials at pressures ≤100 MPa. Disintegration occurs at a non-systematically determined standoff distance z [mm] as a result of variable axial jet speeds determined by the acoustic chamber length. Water velocity fluctuations are converted from pressure fluctuations present in the acoustic chamber using a nozzle. Pressure fluctuations are generated by an ultrasonic sonotrode with a frequency of 20 kHz. The impulse travels through the acoustic chamber, which is geometrically designed to vary its length from 0 mm to 25 mm with a mechanical nut. A PWJ system can be tuned within this interval to achieve the desired PWJ performance. Until now, the synergic effects of the standoff distance z [mm] and the acoustic chamber length lc [mm] on material interactions have not been clarified in the literature. Therefore, this study discusses how the length of the acoustic chamber lc is related to the nozzle's standoff distance z [mm] from the surface of the material and from the point of achieved maximal depth h [mm]. The length of the chamber was gradually increased by one millimetre from 5 to 22 mm. Subsequently, PWJs with p = 30 MPa and 40 MPa were tested. The robot arm carrying the nozzle head travelled along a programmed trajectory at an angle of 16° starting from z = 5 mm with a traverse speed v = 5 mm/s. It has been found that the effect of acoustic chamber length on the disintegration within an erosion interval has a hyperbolic course.

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

47

Číslo periodika v rámci svazku

November 2019

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

347-356

Kód UT WoS článku

000498668600033

EID výsledku v databázi Scopus

2-s2.0-85073325326