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Surface integrity evaluation of brass CW614N after impact of acoustically\nexcited pulsating water jet
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SYSNO ASEP 0461707 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Surface integrity evaluation of brass CW614N after impact of acoustically
excited pulsating water jetTvůrce(i) Lehocká, D. (SK)
Klich, Jiří (UGN-S) RID, ORCID
Foldyna, Josef (UGN-S) RID, ORCID
Hloch, Sergej (UGN-S) RID, SAI, ORCID
Hvizdoš, P. (SK)
Fides, M. (SK)
Botko, F. (SK)
Cárach, J. (SK)Celkový počet autorů 8 Zdroj.dok. Procedia Engineering. - Amsterdam : Elsevier BV
Roč. 149, č. 149 (2016), s. 236-244Poč.str. 9 s. Forma vydání Online - E Akce International Conference on Manufacturing Engineering and Materials, ICMEM 2016 Datum konání 06.06.2016 - 10.06.2016 Místo konání Nový Smokovec Země SK - Slovensko Typ akce EUR Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova pulsating water jet ; surface integrity ; mass material removal ; brass ; nanoindentation Vědní obor RIV JQ - Strojní zařízení a nástroje CEP LO1406 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy ED2.1.00/03.0082 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UGN-S - RVO:68145535 UT WOS 000386946500031 EID SCOPUS 84980010028 DOI 10.1016/j.proeng.2016.06.662 Anotace Presented article is focused on surface integrity evaluation of brass CW614N form the sight of surface topography, structural changes in surface layers and strengthening character in subsurface layers after impact of acoustically excited pulsating water jet (PWJ). Surface topography was evaluated using optical profilometry. Structural changes in subsurface layer were observed based on mass material removal ∆m [mg/s] and maximal depth of penetrance of PWJ hmax [mm]. Nano indentation measurement according to Berkovich were used to examination of strengthening character in subsurface layer. Disintegration of experimental samples was performed under constant technological conditions: hydraulic power of plunger pump Ph= 19 kW; round nozzle diameter d = 1.6 mm; feed speed rate v = 0.75 mm/s; pressure of plunger pump p = 38 MPa, stand-off distance of nozzle from target material z = 45 mm; ultrasound frequency f = 20.29 kHz and as variable factor was set power of ultrasound P on values 340, 360 and 380 W. In terms of surface topography experimental investigation proved that PWJ under selected conditions is not suitable for precision machining. Evaluation of the surface characteristics indicates that the chemical composition has a significant effect on material weight loss Δm [mg/s] and a maximum depth of penetration of PWJ hmax [mm]. Evaluation of characteristics of subsurface layer was observed strengthened area with lower elasticity. Pracoviště Ústav geoniky Kontakt Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Rok sběru 2017 Elektronická adresa http://www.sciencedirect.com/science/article/pii/S1877705816311705
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