TY  - JOUR
AU  - Patarić, Aleksandra
AU  - Gulišija, Zvonko
AU  - Jordović, Branka
AU  - Pezo, Lato
AU  - Mihailović, Marija
AU  - Stefanović, Milentije
PY  - 2015
UR  - https://ritnms.itnms.ac.rs/handle/123456789/354
AB  - In this study the mechanical properties (reduction of area, S-0, tensile strength, R-m, yield strength, R-p, and elongation, A) of EN AW 7075 aluminum alloy obtained by electromagnetic casting were investigated at different operating parameters: frequency (V), field strength (T) and current intensity (I). The predictive mathematical models using Response Surface Methodology, with second order polynomial (SOP) regression models, and Artificial Neural Network model (ANN), were afterwards compared to obtained experimental results. Analysis of variance and post-hoc Tukey's HSD test at 95% confidence limit ("honestly significant differences") have been utilised to show significant differences between various samples. SOP models showed good prediction capabilities, with high coefficients of determination (r(2)), 0.531-0.977, while ANN model performed even better prediction accuracy: 0.800-0.992. The optimal samples were chosen depending on mechanical properties of the product (S-0 = 50.49mm(2), R-m = 405.75Nmm(-2), R-p = 302.49Nmm(-2), A = 6.86%), using optimal operating parameters (V = 30 Hz, I = 250 A, T = 18 x 10(-3) At).
PB  - Japan Inst Metals, Sendai
T2  - Materials Transactions
T1  - Chemometric Approach for Mechanical Properties Prediction during the Electromagnetic Casting Process
EP  - 839
IS  - 6
SP  - 835
VL  - 56
DO  - 10.2320/matertrans.M2015058
UR  - conv_734
ER  - 

@article{
author = "Patarić, Aleksandra and Gulišija, Zvonko and Jordović, Branka and Pezo, Lato and Mihailović, Marija and Stefanović, Milentije",
year = "2015",
abstract = "In this study the mechanical properties (reduction of area, S-0, tensile strength, R-m, yield strength, R-p, and elongation, A) of EN AW 7075 aluminum alloy obtained by electromagnetic casting were investigated at different operating parameters: frequency (V), field strength (T) and current intensity (I). The predictive mathematical models using Response Surface Methodology, with second order polynomial (SOP) regression models, and Artificial Neural Network model (ANN), were afterwards compared to obtained experimental results. Analysis of variance and post-hoc Tukey's HSD test at 95% confidence limit ("honestly significant differences") have been utilised to show significant differences between various samples. SOP models showed good prediction capabilities, with high coefficients of determination (r(2)), 0.531-0.977, while ANN model performed even better prediction accuracy: 0.800-0.992. The optimal samples were chosen depending on mechanical properties of the product (S-0 = 50.49mm(2), R-m = 405.75Nmm(-2), R-p = 302.49Nmm(-2), A = 6.86%), using optimal operating parameters (V = 30 Hz, I = 250 A, T = 18 x 10(-3) At).",
publisher = "Japan Inst Metals, Sendai",
journal = "Materials Transactions",
title = "Chemometric Approach for Mechanical Properties Prediction during the Electromagnetic Casting Process",
pages = "839-835",
number = "6",
volume = "56",
doi = "10.2320/matertrans.M2015058",
url = "conv_734"
}

Patarić, A., Gulišija, Z., Jordović, B., Pezo, L., Mihailović, M.,& Stefanović, M.. (2015). Chemometric Approach for Mechanical Properties Prediction during the Electromagnetic Casting Process. in Materials Transactions
Japan Inst Metals, Sendai., 56(6), 835-839.
https://doi.org/10.2320/matertrans.M2015058
conv_734

Patarić A, Gulišija Z, Jordović B, Pezo L, Mihailović M, Stefanović M. Chemometric Approach for Mechanical Properties Prediction during the Electromagnetic Casting Process. in Materials Transactions. 2015;56(6):835-839.
doi:10.2320/matertrans.M2015058
conv_734 .

Patarić, Aleksandra, Gulišija, Zvonko, Jordović, Branka, Pezo, Lato, Mihailović, Marija, Stefanović, Milentije, "Chemometric Approach for Mechanical Properties Prediction during the Electromagnetic Casting Process" in Materials Transactions, 56, no. 6 (2015):835-839,
https://doi.org/10.2320/matertrans.M2015058 .,
conv_734 .

TY  - JOUR
AU  - Stefanović, Milentije
AU  - Gulišija, Zvonko
AU  - Jordović, Branka
AU  - Aleksandrović, Srbislav
AU  - Mandić, Vesna
AU  - Patarić, Aleksandra
PY  - 2007
UR  - https://ritnms.itnms.ac.rs/handle/123456789/114
AB  - U radu se navode osnovne karakteristike materijala i tehnologije toplog kovanje delova od Allegura. Za legure EN AW 2007 I EN AW 2024 ispitivana je mogućnost novog tehnološkog postupka livenja Al-legura pod dejstvom elektromagnetnog polja. Ovakav postupak omogućava modifikovanje mikrostrukture i poboljšanje mehaničkih osobinama odlivaka. Takođe, u radu se navodi i analiza kovanja u proizvodnim uslovima za leguru dobijenu istiskivanjem, uz pomoć odgovarajućeg SC.SuperForge softvera za 3D probleme. Kao primer, navode se rezultati distribucije ekvivalentnog napona u komadu koji se oblikuje u različitim fazama obrade.
AB  - The paper presents the basic properties of materials and technology of hot forging of Al-alloy parts. For alloys EN AW 2007 and EN AW 2024 the possibility of new technological procedure for casting Al-alloys under the influence of electromagnetic field was investigated. Such a procedure enables modification of microstructure and improvement of mechanical properties of ingots. In addition to that, the paper presents analysis of forging in manufacturing conditions for alloy obtained by extrusion with the application of suitable SC.SuperForge software for 3D problems. The obtained results show the equivalent stress distribution in work-piece which is being formed.
PB  - Univerzitet u Novom Sadu - Fakultet tehničkih nauka - Institut za proizvodno mašinstvo, Novi Sad
T2  - Journal for Technology of Plasticity
T1  - Toplo kovanje Al-legura visoke čvrstoće
T1  - Hot forging of high strength Al-alloys
EP  - 38
IS  - 1-2
SP  - 29
VL  - 32
UR  - conv_257
ER  - 

@article{
author = "Stefanović, Milentije and Gulišija, Zvonko and Jordović, Branka and Aleksandrović, Srbislav and Mandić, Vesna and Patarić, Aleksandra",
year = "2007",
abstract = "U radu se navode osnovne karakteristike materijala i tehnologije toplog kovanje delova od Allegura. Za legure EN AW 2007 I EN AW 2024 ispitivana je mogućnost novog tehnološkog postupka livenja Al-legura pod dejstvom elektromagnetnog polja. Ovakav postupak omogućava modifikovanje mikrostrukture i poboljšanje mehaničkih osobinama odlivaka. Takođe, u radu se navodi i analiza kovanja u proizvodnim uslovima za leguru dobijenu istiskivanjem, uz pomoć odgovarajućeg SC.SuperForge softvera za 3D probleme. Kao primer, navode se rezultati distribucije ekvivalentnog napona u komadu koji se oblikuje u različitim fazama obrade., The paper presents the basic properties of materials and technology of hot forging of Al-alloy parts. For alloys EN AW 2007 and EN AW 2024 the possibility of new technological procedure for casting Al-alloys under the influence of electromagnetic field was investigated. Such a procedure enables modification of microstructure and improvement of mechanical properties of ingots. In addition to that, the paper presents analysis of forging in manufacturing conditions for alloy obtained by extrusion with the application of suitable SC.SuperForge software for 3D problems. The obtained results show the equivalent stress distribution in work-piece which is being formed.",
publisher = "Univerzitet u Novom Sadu - Fakultet tehničkih nauka - Institut za proizvodno mašinstvo, Novi Sad",
journal = "Journal for Technology of Plasticity",
title = "Toplo kovanje Al-legura visoke čvrstoće, Hot forging of high strength Al-alloys",
pages = "38-29",
number = "1-2",
volume = "32",
url = "conv_257"
}

Stefanović, M., Gulišija, Z., Jordović, B., Aleksandrović, S., Mandić, V.,& Patarić, A.. (2007). Toplo kovanje Al-legura visoke čvrstoće. in Journal for Technology of Plasticity
Univerzitet u Novom Sadu - Fakultet tehničkih nauka - Institut za proizvodno mašinstvo, Novi Sad., 32(1-2), 29-38.
conv_257

Stefanović M, Gulišija Z, Jordović B, Aleksandrović S, Mandić V, Patarić A. Toplo kovanje Al-legura visoke čvrstoće. in Journal for Technology of Plasticity. 2007;32(1-2):29-38.
conv_257 .

Stefanović, Milentije, Gulišija, Zvonko, Jordović, Branka, Aleksandrović, Srbislav, Mandić, Vesna, Patarić, Aleksandra, "Toplo kovanje Al-legura visoke čvrstoće" in Journal for Technology of Plasticity, 32, no. 1-2 (2007):29-38,
conv_257 .