Erosion patterns of ultrasonic pulsating water jet on aluminum with extended tubular nozzle

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F25%3A10259508" target="_blank" >RIV/61989100:27230/25:10259508 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s43452-025-01348-7" target="_blank" >https://link.springer.com/article/10.1007/s43452-025-01348-7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s43452-025-01348-7" target="_blank" >10.1007/s43452-025-01348-7</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Erosion patterns of ultrasonic pulsating water jet on aluminum with extended tubular nozzle

Popis výsledku v původním jazyce

This paper presents a controlled experimental investigation into the erosion evolution induced by a 20 kHz ultrasonic pulsating water jet, focusing on its potential for precise material removal. Water droplet volumes of V = 1.53 mm3 were generated and applied to aluminum samples at a pressure of p = 15 MPa. Utilizing extended long nozzles with diameters of 0.4, 0.5, and 0.6 mm, erosion patterns were examined over time intervals ranging from 0.25 to 4 s, with increments of 0.25 s. Scanning Electron Microscopy analysis revealed a progressive degradation process, starting with initial pitting and evolving into complex crater formations. For the 0.6 mm nozzle at 0.25 s, a distinct &apos;corona jet&apos; footprint indicated a hollow cone jet presence, with erosion activity predominantly by the peripheral thin pulsating part. Quantitative analysis showed a non-linear, often logarithmic, increase in erosion depth, hypothesized to result from a negative feedback mechanism where surface roughening reduces the impact pressure peak and disrupts droplet surface tension. Eroded volume, conversely, exhibited a more linear increase. Furthermore, detailed SEM of craters, such as the open cavity observed at the edge of a 0.5 mm nozzle crater after 4 s, confirmed significant material fracture and removal driven by the hydrodynamic action of the high-frequency pulsating water jet.

Název v anglickém jazyce

Erosion patterns of ultrasonic pulsating water jet on aluminum with extended tubular nozzle

Popis výsledku anglicky

This paper presents a controlled experimental investigation into the erosion evolution induced by a 20 kHz ultrasonic pulsating water jet, focusing on its potential for precise material removal. Water droplet volumes of V = 1.53 mm3 were generated and applied to aluminum samples at a pressure of p = 15 MPa. Utilizing extended long nozzles with diameters of 0.4, 0.5, and 0.6 mm, erosion patterns were examined over time intervals ranging from 0.25 to 4 s, with increments of 0.25 s. Scanning Electron Microscopy analysis revealed a progressive degradation process, starting with initial pitting and evolving into complex crater formations. For the 0.6 mm nozzle at 0.25 s, a distinct &apos;corona jet&apos; footprint indicated a hollow cone jet presence, with erosion activity predominantly by the peripheral thin pulsating part. Quantitative analysis showed a non-linear, often logarithmic, increase in erosion depth, hypothesized to result from a negative feedback mechanism where surface roughening reduces the impact pressure peak and disrupts droplet surface tension. Eroded volume, conversely, exhibited a more linear increase. Furthermore, detailed SEM of craters, such as the open cavity observed at the edge of a 0.5 mm nozzle crater after 4 s, confirmed significant material fracture and removal driven by the hydrodynamic action of the high-frequency pulsating water jet.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Archives of Civil and Mechanical Engineering

ISSN

1644-9665

e-ISSN

2083-3318

Svazek periodika

25

Číslo periodika v rámci svazku

7-8

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

17

Strana od-do

nestránkováno

Kód UT WoS článku

001587931200001

EID výsledku v databázi Scopus

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