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Technical model of micro Electrical Discharge Machining (EDM) milling suitable for bottom grooved micromixer design optimization
ID
Sabotin, Izidor
(
Author
),
ID
Tristo, Gianluca
(
Author
),
ID
Valentinčič, Joško
(
Author
)
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https://www.mdpi.com/2072-666X/11/6/594
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Abstract
In this paper, development of a technical model of micro Electrical Discharge Machining in milling configuration (EDM milling) is presented. The input to the model is a parametrically presented feature geometry and the output is a feature machining time. To model key factors influencing feature machining time, an experimental campaign by machining various microgrooves into corrosive resistant steel was executed. The following parameters were investigated: electrode dressing time, material removal rate, electrode wear, electrode wear control time and machining strategy. The technology data and knowledge base were constructed using data obtained experimentally. The model is applicable for groove-like features, commonly applied in bottom grooved micromixers (BGMs), with widths from 40 to 120 µm and depths up to 100 µm. The optimization of a BGM geometry is presented as a case study of the model usage. The mixing performances of various micromixer designs, compliant with micro EDM milling technology, were evaluated using computational fluid dynamics modelling. The results show that slanted groove micromixer is a favourable design to be implemented when micro EDM milling technology is applied. The presented technical model provides an efficient design optimization tool and, thus, aims to be used by a microfluidic design engineer.
Language:
English
Keywords:
micromachining
,
micro EDM milling
,
empirical modelling
,
micromixer
,
design for manufacturing
,
computational fluid dynamics
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FS - Faculty of Mechanical Engineering
Publication status:
Published
Publication version:
Version of Record
Year:
2020
Number of pages:
20 str.
Numbering:
Vol. 11, iss. 6, art. 594
PID:
20.500.12556/RUL-127109
UDC:
519.6:532(045)
ISSN on article:
2072-666X
DOI:
10.3390/mi11060594
COBISS.SI-ID:
20114691
Publication date in RUL:
18.05.2021
Views:
1486
Downloads:
185
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Record is a part of a journal
Title:
Micromachines
Shortened title:
Micromachines
Publisher:
Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:
2072-666X
COBISS.SI-ID:
523276825
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:
16.06.2020
Secondary language
Language:
Slovenian
Keywords:
mikroizdelava
,
mikro elektroerozijsko dolbenje
,
empirično modeliranje
,
mikromešalnik
,
dizajn za izdelavo
,
numerična analiza dinamike tekočin
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
P2-0248
Name:
Inovativni izdelovalni sistemi in procesi
Funder:
EC - European Commission
Funding programme:
H2020
Project number:
811040
Name:
Chair Of Micro Process Engineering and TEchnology
Acronym:
COMPETE
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