Subsurface microtunneling in ductile material caused by multiple droplet impingement at subsonic speeds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13420%2F22%3A43897426" target="_blank" >RIV/44555601:13420/22:43897426 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68145535:_____/22:00555114 RIV/60460709:41310/22:89992

Výsledek na webu

<a href="https://reader.elsevier.com/reader/sd/pii/S0043164821005597?token=FF94D20B420B29BE99621EC281B1CFFBFC0E1963028F375916B813FF92AED7888A0255CC3EFAB24F1480E62B3B6198F9&originRegion=eu-west-1&originCreation=20230127121152" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S0043164821005597?token=FF94D20B420B29BE99621EC281B1CFFBFC0E1963028F375916B813FF92AED7888A0255CC3EFAB24F1480E62B3B6198F9&originRegion=eu-west-1&originCreation=20230127121152</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.wear.2021.204176" target="_blank" >10.1016/j.wear.2021.204176</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Subsurface microtunneling in ductile material caused by multiple droplet impingement at subsonic speeds

Popis výsledku v původním jazyce

This article deals with the analysis of the subsurface deformation effects of materials due to the periodic action of liquid droplets, each with a constant volume of approximately 36 mm3 distributed with a spatial frequency of 20,000 i/mm. Sample grooves were analyzed within standoff distances where the prevailing mechanism is acceleration culmination depletion using the stair trajectory to avoid a possible Doppler effect. Using X-ray mikro-CT, a network of cavities corresponding to a fractal shape was identified below the surface. It is apparent that the ability to erode does not end with the formation of a groove but continues into the core of the material in the form of microjetting, tunneling, or piercing. From that perspective, two types of these cavities have been identified, blind and transient, with diameters of a few micrometers. The topological changes in the subsurfaceregion of the sample were analyzed using X-ray mikro-CT progressive sectioning. The anticipated subsurface deformation was further explored and analyzed using SEM analysis. The integrity of the material around the cavities was assessed according to microhardness to explain the microjetting, tunneling, and piercing propagation. The results suggest that the effect of the lateral jetting after droplet collapsing causes extensive hydrodynamic tunneling in the material that is much higher during the intense periodic action of water droplets, even at subsonic speeds.

Název v anglickém jazyce

Subsurface microtunneling in ductile material caused by multiple droplet impingement at subsonic speeds

Popis výsledku anglicky

This article deals with the analysis of the subsurface deformation effects of materials due to the periodic action of liquid droplets, each with a constant volume of approximately 36 mm3 distributed with a spatial frequency of 20,000 i/mm. Sample grooves were analyzed within standoff distances where the prevailing mechanism is acceleration culmination depletion using the stair trajectory to avoid a possible Doppler effect. Using X-ray mikro-CT, a network of cavities corresponding to a fractal shape was identified below the surface. It is apparent that the ability to erode does not end with the formation of a groove but continues into the core of the material in the form of microjetting, tunneling, or piercing. From that perspective, two types of these cavities have been identified, blind and transient, with diameters of a few micrometers. The topological changes in the subsurfaceregion of the sample were analyzed using X-ray mikro-CT progressive sectioning. The anticipated subsurface deformation was further explored and analyzed using SEM analysis. The integrity of the material around the cavities was assessed according to microhardness to explain the microjetting, tunneling, and piercing propagation. The results suggest that the effect of the lateral jetting after droplet collapsing causes extensive hydrodynamic tunneling in the material that is much higher during the intense periodic action of water droplets, even at subsonic speeds.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Wear

ISSN

0043-1648

e-ISSN

1873-2577

Svazek periodika

490-491

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

13

Strana od-do

1-13

Kód UT WoS článku

000754298000001

EID výsledku v databázi Scopus

2-s2.0-85120326860