Mostafa Abbas Jabbar

@stu.edu.iq

Department of Mechanical Techniques
Al-Nasiriya Technical Institute, Southern Technical University

Mostafa Abbas Jabbar


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https://researchid.co/m.abbas

EDUCATION

MASTER ENGINEERING, Universiti Teknologi Malaysia: Johor Bahro, Johor, MY
6

Scopus Publications

59

Scholar Citations

4

Scholar h-index

2

Scholar i10-index

Scopus Publications

  • Heat Transfer Enhancement Simulation Employing Flat and Curved Winglet Vortex Generator Pairs with Punched Holes
    Saad Jabbar Nghaimesh, Mostafa Abbas Jabbar
    International Journal of Heat and Technology, 2024
    To comprehend heat transfer mechanisms, the study examines the flow and thermal characteristics of flat and curved vortex generators with punched holes on their surfaces.Re is varied from 3,000 to 18,000 in three-dimensional numerical simulations in a channel flow with two VGs mounted on the bottom wall.The improvement of heat transfer and pressure loss are investigated using the dimensionless parameters Num/Num0, f/f0, and R =(Num/Num0)/(f/f0).The results indicate that VGs with punched holes have higher Num/Num0 values compared to VGs without punched holes across all Re values.The most significant difference, up to 6.4%, is observed between VGs with openings (DWH) and VGs without punched holes (DWP) at Re=12,000.The apparent friction factor (f/f0), initially increases rapidly and then stabilizes with Re.The DWP has the highest friction factor f/f0, ranging from 1.1 to 1.7, due to the larger area that confronts the airflow in the P-series of VGs, followed by DWH.Curved VGs CDW and CDWH are more effective in reducing drag and lowering f/f0 compared to plane VGs due to their streamlined shape.The jet flow from the perforations helps clear stagnant fluids and reduce pressure differences before and after the VGs.Also, the hydraulic heat capacity R is more effective in a curved VG than in a flat VG because of the improved heat transfer and lower wire flow.The thermo-hydraulic efficiency coefficient is determined by Colburn and friction coefficients, and CDWH has the highest resistance, followed by CDWP, DWH, and DWP.When Re=18,000, a rectangular VG with holes performs better than one without, with a maximum difference of 35.3%.
  • A Design of Experiment Analysis Approach to Improve Part Quality in 3D Printing
    Mostafa Abbas Jabbar
    Manufacturing Technology, 2023
    Fused Deposition Modeling (FDM) is one of the widely used technologies of additive manufacturing. The concern over the surface quality and dimensional accuracy is getting increased among the research community. The design of the experimental methodology is based on the analysis of variance (ANOVA) of fractional factorial design. This analysis was used to study the effect of layer thickness, extrusion temperature, speed of deposition, and fill density on dimensional accuracy and surface roughness of the model developed by FDM. Polylactic Acid (PLA) material has been selected in this work as it is inexpensive, easy to print, and biodegradable. The results showed that layer thickness is an effective factor in determining surface roughness. Fill density (X and Z dimensions), layer thickness (Y dimension), and speed of deposition (Z dimension) are significant factors for dimensional accuracy. Regarding surface roughness, curvature was found to be significant; however, the minimum optimization point was not reached. Thus, more experiments are required to be carried out to get the minimum point. For dimensional accuracy optimization, the dimensions along X, Y, and Z were realized to be more accurate at lower levels of every factor except for fill density (D), which was optimized
  • Role of YSZ Particles on Microstructural, Wear, and Corrosion Behavior of Al-15%Mg2Si Hybrid Composite for Marine Applications
    Hamidreza Ghandvar, Mostafa Abbas Jabbar, Michal Petrů, Tuty Asma Abu Bakar, Lim Jia Ler, Seyed Saeid Rahimian Koloor
    Journal of Marine Science and Engineering, 2023
    This study aims to investigate the microstructural alterations, mechanical properties, sliding wear behavior, and corrosion properties of Al-15%Mg2Si composites with different contents of yttria-stabilized zirconia (YSZ). Al-15%Mg2Si composites with the different contents of YSZ (0, 3, 6, and 9 wt.%) were fabricated using the stir-casting technique. The fabricated composites were characterized by means of optical microscopy (OM), scanning electron microscopy (SEM) equipped with energy-dispersive spectroscopy (EDS), Vickers hardness tester, linear reciprocating tribometer (LRT), and electrochemical test. The results showed that with the introduction of YSZ particles, the average size of the primary Mg2Si particles in the base composite was 137.78 µm, which was reduced to 88.36 µm after adding 9 wt.% YSZ. The aspect ratio of Mg2Si particles also decreased from 3, for the base composite, to 1.27 in the composite containing 9 wt.% YSZ. Moreover, the hardness value displays an incremental trend from 102.72 HV, as recorded for the base in situ composite, to 126.44 HV in the composite with 9 wt.% YSZ. On top of that, the Al-15%Mg2Si-9%YSZ demonstrates exceptional wear resistance, with the lowest wear rate of 0.46 mm3/km under a 25 N applied load. Its average coefficient of friction (COF) was recorded at 0.42, which is lower than both the 3 and 6 wt.% of YSZ-containing composites. The smoother worn surface in Al-15%Mg2Si-9%YSZ hybrid composite implies the abrasion phenomenon, as dominant wear behavior is milder than the other fabricated composites. On top of that, the Al-15%Mg2Si-9%YSZ also possesses optimum corrosion resistance. The corrosion rate is 0.080 mmpy, comparable to the 0.164 mmpy rate obtained in the in situ composite.
  • MICROSTRUCTURE EXAMINATION AND TENSILE PROPERTIES OF Al-20%Mg2Si-XZRO2 HYBRID COMPOSITES
    Malaysian Journal of Microscopy, 2023
  • Microstructure examination and sliding wear behavior of al-15%mg2si-xgd in situ composites before and after hot extrusion
    Hamidreza Ghandvar, Mostafa Abbas Jabbar, Abdollah Bahador, Tuty Asma Abu Bakar, Nor Akmal Fadil, Katsuyoshi Kondoh
    Lubricants, 2022
    In current study; the effect of various Gadolinium (Gd) additions on the microstructure and sliding wear behaviour of Al-15%Mg2Si composite before and after the hot extrusion process was examined. Optical microscopy (OM), scanning electron microscopy (SEM) equipped with EDX facility and X-ray diffraction (XRD) were used to characterize the microstructure. The results showed that with addition of 1.0 wt.% Gd to Al-15%Mg2Si composite, the primary Mg2Si particles size reduced from 44 µm to 23 µm and its morphology altered from dendritic to polygonal shape. Further refinement of primary Mg2Si particles was achieved after conducting hot extrusion which resulted in a decrease in its size to 19 µm with a transfer to near-spherical morphology. The Vickers hardness value increased from 55.6 HV in the as-cast and unmodified composite to 72.9 HV in the extruded 1.0% Gd modified composite. The wear test results revealed that composites treated with Gd possess higher wear resistance in comparison with those of without Gd. The highest wear resistance obtained with the lowest wear rates of 0.19 mm3/km and 0.14 mm3/km in the Al-15%Mg2Si-1.0% Gd before and after the hot extrusion, respectively. The high wear resistance of extruded Gd-modified Al-15%Mg2Si composite is due to the refinement of primary Mg2Si particles with uniform distribution in the composite matrix along with fragmentation of Gd intermetallic compounds.
  • Role b4c addition on microstructure, mechanical, and wear characteristics of al-20%mg2si hybrid metal matrix composite
    Hamidreza Ghandvar, Mostafa Abbas Jabbar, Seyed Saeid Rahimian Koloor, Michal Petrů, Abdollah Bahador, Tuty Asma Abu Bakar, Katsuyoshi Kondoh
    Applied Sciences Switzerland, 2021
    In the current study, the effect of different B4C additions (0, 2.5, 5, and 10 wt%) on the microstructural, solidification behavior, mechanical, and tribological properties of Al-20%Mg2Si composite were studied by means of scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), Vickers hardness, tensile, and dry sliding wear tests. The cooling curve thermal analysis (CCTA) approach was utilized to monitor the influence of B4C particles on the solidification behavior of Al-20%Mg2Si composite. The results revealed that the addition of B4C particles up to 10 wt% reduced the nucleation temperature (TN) and growth temperature (TG) of the primary Mg2Si phase. Moreover, the proper amount of B4C added to Al-20%Mg2Si composite has a significant effect on the microstructural alteration, mechanical, and tribological properties of the composite. The mean size of primary Mg2Si in Al-Mg2Si composite was 47 μm, in which with the addition of 5 wt% B4C, the particle size decreased to 33 μm. The highest UTS (217 MPa) and El% (7%) was achieved in Al-20%Mg2Si-5%B4C hybrid composite. The cast Al-20%Mg2Si composite revealed the brittle mode of fracture with some cleavage characterization, in which with the addition of 5%B4C, the fracture mode altered to a more ductile fracture. The wear results revealed that the Al-20%Mg2Si-5%B4C hybrid composite has the highest wear resistance with the lowest wear rate (0.46 mm3/Km) and friction coefficient (µ = 0.52) under 20 N applied load compared to other fabricated composites with mild abrasion as the governed wear mechanism.

RECENT SCHOLAR PUBLICATIONS

  • DESIGNING TOMORROW: THE CONVERGENCE OF AI, IoT, AND ENGINEERING
    DRKSS MR. RAYAVARAPU BHAVANI SANKAR, LINGALA JAHNAVI, MOSTAFA ABBAS JABBAR
    VAAGAI INTERNATIONAL PUBLISHING HOUSE 1, 248 , 2025
    2025
  • MICROSTRUCTURE AND MECHANICAL PROPERTIES FOR ALUMINUM 2024 CHIPS OF VARIOUS PREHEATING TEMPERATURES AND TIMES MANUFACTURING BY HOT EXTRUSION PROCESS
    AS Mahdi
    International Journal of Applied Mathematics 38 (10s), 674-684 , 2025
    2025
  • Heat Transfer Enhancement Simulation Employing Flat and Curved Winglet Vortex Generator Pairs with Punched Holes.
    SJ Nghaimesh, MA Jabbar
    International Journal of Heat & Technology 42 (5) , 2024
    2024
  • MICROSTRUCTURE EXAMINATION AND TENSILE PROPERTIES OF Al-20% Mg2Si-XZRO2 HYBRID COMPOSITES
    H Ghandvar, TAA Bakar, MA Jabbar
    Malaysian Journal of Microscopy 19 (2), 163-172 , 2023
    2023
  • A Design of Experiment Analysis Approach to Improve Part Quality in 3D Printing
    MA Jabbar
    MANUFACTURING TECHNOLOGY 23 (3), 290-297 , 2023
    2023
    Citations: 12
  • Role of YSZ Particles on Microstructural, Wear, and Corrosion Behavior of Al-15%Mg2Si Hybrid Composite for Marine Applications
    LJLSSRK Hamidreza Ghandvar 1,Mostafa Abbas Jabbar 2,Michal Petrů 3,Tuty Asma ...
    Journal of Marine Science and Engineering 11 (5) , 2023
    2023
    Citations: 7
  • Petr u, M.; Bakar, TAA; Ler, LJ; Rahimian Koloor, SS Role of YSZ Particles on Microstructural, Wear, and Corrosion Behavior of Al-15% Mg2Si Hybrid Composite for Marine Applications
    H Ghandvar, MA Jabbar
    J. Mar. Sci. Eng 11, 1050 , 2023
    2023
    Citations: 2
  • Microstructure Examination and Sliding Wear Behavior of Al-15%Mg 2 Si-xGd In Situ Composites before and after Hot Extrusion
    H Ghandvar, MA Jabbar, A Bahador, TA Abu Bakar, NA Fadil, K Kondoh
    Lubricants 10 (1), 3 , 2021
    2021
  • Role B4C Addition on Microstructure, Mechanical, and Wear Characteristics of Al-20%Mg2Si Hybrid Metal Matrix Composite
    H Ghandvar, MA Jabbar, SSR Koloor, M Petrů, A Bahador, TAA Bakar, ...
    Applied Sciences 11 (7), 3047 , 2021
    2021
    Citations: 32
  • Petr u, M.; Bahador, A.; Bakar, TAA; Kondoh, K. Role B4C addition on microstructure, mechanical, and Wear characteristics of Al-20% Mg2Si hybrid metal matrix composite
    H Ghandvar, MA Jabbar, SSR Koloor
    Appl. Sci 11, 3047 , 2021
    2021
    Citations: 6
  • EFFECT OF COOLING RATES ON MORPHOLOGY TRANSFORMATION OF PRIMARY MG2SI IN Al–20MG2SI–0.2 BA COMPOSITE
    H Ghandvar, MA Jabbar, TAA Bakar
    The 2nd International Professional Doctorate and Postgraduate Symposium … , 2021
    2021

MOST CITED SCHOLAR PUBLICATIONS

  • Role B4C Addition on Microstructure, Mechanical, and Wear Characteristics of Al-20%Mg2Si Hybrid Metal Matrix Composite
    H Ghandvar, MA Jabbar, SSR Koloor, M Petrů, A Bahador, TAA Bakar, ...
    Applied Sciences 11 (7), 3047 , 2021
    2021
    Citations: 32
  • A Design of Experiment Analysis Approach to Improve Part Quality in 3D Printing
    MA Jabbar
    MANUFACTURING TECHNOLOGY 23 (3), 290-297 , 2023
    2023
    Citations: 12
  • Role of YSZ Particles on Microstructural, Wear, and Corrosion Behavior of Al-15%Mg2Si Hybrid Composite for Marine Applications
    LJLSSRK Hamidreza Ghandvar 1,Mostafa Abbas Jabbar 2,Michal Petrů 3,Tuty Asma ...
    Journal of Marine Science and Engineering 11 (5) , 2023
    2023
    Citations: 7
  • Petr u, M.; Bahador, A.; Bakar, TAA; Kondoh, K. Role B4C addition on microstructure, mechanical, and Wear characteristics of Al-20% Mg2Si hybrid metal matrix composite
    H Ghandvar, MA Jabbar, SSR Koloor
    Appl. Sci 11, 3047 , 2021
    2021
    Citations: 6
  • Petr u, M.; Bakar, TAA; Ler, LJ; Rahimian Koloor, SS Role of YSZ Particles on Microstructural, Wear, and Corrosion Behavior of Al-15% Mg2Si Hybrid Composite for Marine Applications
    H Ghandvar, MA Jabbar
    J. Mar. Sci. Eng 11, 1050 , 2023
    2023
    Citations: 2
  • DESIGNING TOMORROW: THE CONVERGENCE OF AI, IoT, AND ENGINEERING
    DRKSS MR. RAYAVARAPU BHAVANI SANKAR, LINGALA JAHNAVI, MOSTAFA ABBAS JABBAR
    VAAGAI INTERNATIONAL PUBLISHING HOUSE 1, 248 , 2025
    2025
  • MICROSTRUCTURE AND MECHANICAL PROPERTIES FOR ALUMINUM 2024 CHIPS OF VARIOUS PREHEATING TEMPERATURES AND TIMES MANUFACTURING BY HOT EXTRUSION PROCESS
    AS Mahdi
    International Journal of Applied Mathematics 38 (10s), 674-684 , 2025
    2025
  • Heat Transfer Enhancement Simulation Employing Flat and Curved Winglet Vortex Generator Pairs with Punched Holes.
    SJ Nghaimesh, MA Jabbar
    International Journal of Heat & Technology 42 (5) , 2024
    2024
  • MICROSTRUCTURE EXAMINATION AND TENSILE PROPERTIES OF Al-20% Mg2Si-XZRO2 HYBRID COMPOSITES
    H Ghandvar, TAA Bakar, MA Jabbar
    Malaysian Journal of Microscopy 19 (2), 163-172 , 2023
    2023
  • Microstructure Examination and Sliding Wear Behavior of Al-15%Mg 2 Si-xGd In Situ Composites before and after Hot Extrusion
    H Ghandvar, MA Jabbar, A Bahador, TA Abu Bakar, NA Fadil, K Kondoh
    Lubricants 10 (1), 3 , 2021
    2021
  • EFFECT OF COOLING RATES ON MORPHOLOGY TRANSFORMATION OF PRIMARY MG2SI IN Al–20MG2SI–0.2 BA COMPOSITE
    H Ghandvar, MA Jabbar, TAA Bakar
    The 2nd International Professional Doctorate and Postgraduate Symposium … , 2021
    2021