Jabbar Gattmah

@uodiyala.edu.iq

Material Engineering, College of Engineering, University of Diyala
Assoc.Proof.Dr.

Jabbar Gattmah


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https://researchid.co/jabbar1974
Jabbar Gattmah was born in 1974 in Diyala, Iraq. He received his BS.c. in 1998 in Dies and Tools Engineering from Technical Engineering College, Baghdad, Iraq and his MS.c. in 2002 in Mechanical Engineering from the University of Technology, Baghdad, Iraq. Dr. Gattmah received his Ph.D. in 2017 in Mechanical Engineering from Ankara Yıldırım Beyazıt University. He worked in Ministry of Communications, Diyala Branch in 2002 for four years. He works in Ministry of higher education, University of Diyala, College of Engineering from 2006 until now. He taught several courses in mechanical and materials engineering . His researches focuses on Metal Forming Processes, Mechanical Properties of Materials, Dies and Tools, Materials Behavior, and Manufacturing Operations

EDUCATION

Ph.D. Mechanical Engineering, Material Forming, Ankara Yıldırım Beyazıt University, Ankara, Turkey
MS.c. Mechanical Engineering, University of Technology, Baghdad, Iraq
BS.c. Dies and Tools Engineering, Technical Engineering College, Baghdad, Iraq

RESEARCH INTERESTS

Metal Forming Processes; Residual Stresses Measurement; Finite Element Simulation, Manufacturing Operations; Metal Composite; Tools and Die Design;
15

Scopus Publications

198

Scholar Citations

8

Scholar h-index

7

Scholar i10-index

Scopus Publications

  • Assessment of induced residual stresses and microstructure of Al/B4C/FA composite extruded by equal channel angular pressing
    Tiba Qahtan Irhayyim, Jabbar Gattmah
    Advances in Science and Technology Research Journal, 2025
    This research evaluates the residual stresses and microstructure of rods fabricated from a hybrid aluminum matrix composite (Al1050/B 4 C/FA). The rod composite is subjected to various passes (cycles) using equal channel angular pressing (ECAP) at room temperature. Channel angles of 120° and 135° with pass numbers of 1P, 2P, 3P, 4P, 5P, and 6P are used to investigate the induced residual stresses (IRS) and examine the microstructure. The de - structive cutting technique (CT) is employed to assess the state of IRS in the axial direction, and scanning electron microscopy (SEM) is used to check the microstructure before and after severe plastic deformation (SPD). The results show that the values of residual stresses tend to increase due to the effects of SPD compared to the casting composite. As the ECAP cycles increase, the magnitudes of residual stresses start to change; the compressive state of residual stresses is near the rod surface, while the stresses are in tensile state near the center of the composite rod. The cycles of ECAP significantly impact the grain size reduction. The smallest grain size is observed at a die angle of 120° after 6 ECAP passes, measuring between 1 and 8 µm, while the grain size for the casted rods ranged from 4 to 15 µm.
  • Influence of applied coating time on nano hydroxyapatite/ chitosan coating on 316L stainless steel alloy using electrophoretic deposition for biomedical application
    Aya Muhsin Hazber, Ayad Naseef Jassim, Jabbar Qassim Gattmah, Jaber Kasem Kutm, Fatemeh Poorsalehi
    Advances in Science and Technology Research Journal, 2025
    In this work, an electrophoretic deposition (EPD) method was utilized to cover a biocompatible stainless steel medical grid type 316L with nanoparticles of hydroxyapatite (HA). ln conjunction with the biopolymer chitosan (CHT), as a binder, it enhances the adhesive capabilities of a substrate. The chosen bio-coating method is the EPD process of 316L Stainless Steel alloy due to its ease of use, low cost, and capacity to coat intricate items. Consequently, this research studied different concentrations of the materials utilized, the most significant variables, and their effects in order to acquire the optimal attributes for the coating layer, using voltage applied and deposition time. The coating periods were 2, 4 and 6 minutes, and the concentrations were 4, 7 and 10 g/L, while the voltages were modulated between 20, 40, and 60 volts. In spite of the fact that the metallic medical applications and bone replacement have made substantial and fruitful progress, difficulties still persist. The coating procedures have a significant impact on how well the composite materials work in the biological devices. To improve the properties of composites used in biomedicine, coating them is an essential step. X-ray diffraction (XRD) spectroscopy and scanning electron microscopy (SEM) were used to examine the deposited coatings, and the Zeta potential for suspensions was computed.
  • Application of Polymeric Materials for 3D Printed Dentures: A review
    Alaa Raad Ali, Suha Shihab, Sheymaa Alazzawi, Jabbar Gattmah
    Diyala Journal of Engineering Sciences, 2024
    The development of three-dimensional printing technology (3D printing) has revolutionized the dental industry by providing a rapid, dependable, and affordable way to create a variety of dental products, including denture bases. This review article presents in-depth research on polymeric materials and their effect on different properties and aspects of dentures manufactured by 3D printing processes. This study indicated that Poly (methylmethacrylate) (PMMA) is a popular material in the 3D printing process of dentures. Despite its widespread use in dentures, more research is required to overcome some disadvantages like brittleness and poor mechanical qualities by utilizing additives to this material for improvement. The polyether ether ketone (PEEK) has remarkable mechanical and thermal properties and is perfect for dentures. A variety of medical and dental applications can benefit from Acrylonitrile butadiene styrene (ABS) toughness and chemical resistance, our review investigation uncovered several potential applications of ABS for printed dentures. Polylactic acid (PLA) is a biocompatible and biodegradable polymer derived from renewable resources and it has been used in dentures. However, additional study is required to enhance its performance in dentures. Furthermore, it was found that the most appropriate 3D printing technology for denture printing is the vat photopolymerization process. Advances in material qualities are assisting in the durable and biocompatible dental prostheses that meet the evolving needs of patients and doctors. Furthermore, in-depth evaluations of environmental sustainability and biocompatibility are essential for advancing the discipline ethically and responsibly.
  • Die angle effect on the generated residual stresses in the inclined and final region during the aluminum extrusion
    Jabbar Gattmah, Emad Ali Hussein, Ayad Naseef Jaseem, Suha K. Shihab
    Journal of Mechanical Science and Technology, 2024
  • Evaluation of microstructure and mechanical properties of Al1050/Al2O3/Gr composite processed by forming operation ECAP
    Alhassan Mohammed Hassan, Jabbar Gattmah, Suha K. Shihab
    Open Engineering, 2024
    Enhancement of microstructure and mechanical features of the hybrid aluminum matrix composite (HAMC) prepared by the stir-casting process (SCP) is quite significant for failure prevention during the service. In this work, the circular rod of hybrid aluminum matrix composite reinforced with particles of alumina (Al2O3) 50 μm, and graphite (Gr) 40–100 µm fabricated by SCP was adopted. This Al1050/Al2O3/Gr composite was subjected to severe plastic deformation using equal channel angular pressing (ECAP) at room temperature to show the impact of this process on the microstructure and mechanical features of the fabricated composite. Grain refinement, strength, and hardness were evaluated at different forming passes (1P, 3P, and 5P) with two channel angles (die angles) of 120° and 135°. The results revealed that the number of ECAP cycles has a significant effect on the refinement of the grain size. The fifth pass of ECAP (5P ECAP) with a die angle of 120° gave more refinement of the grains in the range of 36–75 nm compared to other passes. On the other hand, the strength and hardness relatively augment until 5P ECAP with increasing the cycle number at two die angles of 120° and 135°. The ultrafine grain can reduce the voids of the aluminum matrix then the hardness is enhanced.
  • Optimization of Ti⁃5Al⁃2.5Sn Chemical Milling Process Parameters Using Taguchi Design for Enhanced Performance
    Journal of Harbin Institute of Technology New Series, 2024
  • A review on mechanical properties and microstructure for multilayered metal composite fabricated by roll bonding process
    Sara Falih Alzubaidi, Jabbar Gattmah, Emad Ali Hussein
    Aip Conference Proceedings, 2023
  • Optimization of Rolling Parameters for Enhancing Surface Integrity of Aluminum Alloy
    Journal of Harbin Institute of Technology New Series, 2023
  • Influencing the residual stresses in tubes drawn with a floating plug by changing tool parameters
    Jabbar Gattmah, Fahrettin Ozturk, Suha K. Shihab, Sadettin Orhan
    Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2022
  • Estimation of induced residual stresses and corrosion behavior of machined Inconel 718 superalloy: 3D-FE simulation and optimization
    Khalaf Nasralla, Suha K. Shihab, Adel K. Mahmoud, Jabbar Gattmah
    International Journal of Computational Materials Science and Engineering, 2022
    Nickel super alloys like Inconel 718 characterize a significant metal part in the structures of aircraft and engine components. The high reliability levels are the major conditions during the manufacturing of these essential structural components in aerospace production. Surface integrity is the most important factor considered for estimating the quality of machined surfaces in term of finishing as well as strongly effect on the corrosion behavior of the machined surface. In this study, three-dimensional (3D)-finite element (3D-FE) simulations were accomplished to determine induced residual stresses in machined Inconel 718 alloy. 3D simulations were executed in the sequential successive method using the design of experiments (DOEs) based on Taguchi L9 technique. Subsequently, a veritable turning was implemented based on the selected Taguchi design to validate the simulation results. Also, the efficiency of independent parameters (cutting speed, feed rate, and depth of cut) on the surface integrity (surface roughness, microhardness, induced residual stresses), and corrosion rate of the machined surface were explored experimentally. Based on analysis of variance (ANOVA), it was obtained that the feed rate is the most relevant factor related to surface roughness and corrosion rate while cutting speed is the most relevant factor related to microhardness and induced residual stresses. The analyzed polarization curves confirmed that the reducing surface roughness and increasing induced compressive residual stresses are robustly related to enhancing the corrosion behavior of Inconel 718. Robust agreement was detected between the predicted and measured data. The optimal values of independent parameters that led to optimal surface integrity and minimum value of corrosion rate were found. Based on the revealed simulation results, the 3D-FE simulation of the turning process afforded consistent data as compared to experimental measurements for the wide range of induced residual stresses.
  • Experimental Investigation of Surface Integrity and Multi-Objective Optimization of End Milling for Hybrid Al7075 Matrix Composites
    Suha K. Shihab, Jabbar Gattmah, Hala M. Kadhim
    Silicon, 2021
  • A new development of measurement technique for residual stresses generated by the cold tube drawing process with a fixed mandrel
    Jabbar Gattmah, Fahrettin Ozturk, Sadettin Orhan
    International Journal of Advanced Manufacturing Technology, 2020
  • Numerical Simulation of Bending Process for Steel Plate Using Finite Element Analysis
    Jabbar Gattmah, Fahrettin Ozturk, Sadettin Orhan
    Arabian Journal for Science and Engineering, 2019
  • Experimental and finite element analysis of residual stresses in cold tube drawing process with a fixed mandrel for AISI 1010 steel tube
    Jabbar Gattmah, Fahrettin Ozturk, Sadettin Orhan
    International Journal of Advanced Manufacturing Technology, 2017
  • Effects of Process Parameters on Hot Extrusion of Hollow Tube
    Jabbar Gattmah, Fahrettin Ozturk, Sadettin Orhan
    Arabian Journal for Science and Engineering, 2017

RECENT SCHOLAR PUBLICATIONS

  • Superplastic Deformation Processes of the Mg Alloys: A Detailed Review
    AL Abod, J Gattmah
    Bilad Alrafidain Journal for Engineering Science and Technology, 29-36 , 2026
    2026
  • Mechanical Properties and Porosity Evaluation of the Casted Composite (Al1050/B4C/FA) after Multi-Cycles of SPD
    TQ Irhayyim, J Gattmah
    Bilad Alrafidain Journal for Engineering Science and Technology, 55-61 , 2026
    2026
  • Assessment of induced residual stresses and microstructure of Al/B4C/FA composite extruded by equal channel angular pressing
    TQ Irhayyim, JQ Gattmah
    Advances in Science and Technology. Research Journal 19 (7) , 2025
    2025
    Citations: 1
  • Influence of Applied Coating Time on Nano Hydroxyapatite/chitosan Coating on 316L Stainless Steel Alloy Using Electrophoretic Deposition for Biomedical Application
    AM Hazber, AN Jassim, JQ Gattmah
    Advances in Science and Technology. Research Journal 19 (5) , 2025
    2025
  • Application of polymeric materials for 3D printed dentures: A review
    AR Ali, S Shihab, S Alazzawi, J Gattmah
    Diyala Journal of Engineering Sciences, 1-17 , 2024
    2024
    Citations: 5
  • Evaluation of microstructure and mechanical properties of Al1050/Al 2 O 3 /Gr composite processed by forming operation ECAP
    AM Hassan, J Gattmah, SK Shihab
    Open Engineering 14 (1), 20240041 , 2024
    2024
    Citations: 1
  • Die angle effect on the generated residual stresses in the inclined and final region during the aluminum extrusion
    J Gattmah, EA Hussein, AN Jaseem, SK Shihab
    Journal of Mechanical Science and Technology 38 (8), 4277-4286 , 2024
    2024
    Citations: 3
  • Optimization of Ti⁃ 5Al⁃ 2.5 Sn Chemical Milling Process Parameters Using Taguchi Design for Enhanced Performance
    SK Shihab, AAAG Alrubaiy, AN Jaseem, J Gattmah
    2024
  • A review on mechanical properties and microstructure for multilayered metal composite fabricated by roll bonding process
    SF Alzubaidi, J Gattmah, EA Hussein
    PROCEEDINGS OF THE 2022 4TH INTERNATIONAL CONFERENCE ON SUSTAINABLE … , 2023
    2023
  • Optimization of rolling parameters for enhancing the surface integrity of aluminum alloy
    EA Hussein, J Gattmah, AN Jaseem, SK Shibab
    Journal of Harbin Institute of Technology (New Series) 30 (6), 70-82 , 2023
    2023
    Citations: 5
  • Fabrication of Two Layers Al/Cu Metal Composite by Roll Bonding Technique
    S Alzubaidi, J Gattmah, S Orhan
    Diyala Journal of Engineering Sciences 15 (4), 1-9 , 2022
    2022
    Citations: 1
  • Influencing the residual stresses in tubes drawn with a floating plug by changing tool parameters
    J Gattmah, F Ozturk, SK Shihab, S Orhan
    Journal of the Brazilian Society of Mechanical Sciences and Engineering 44 … , 2022
    2022
    Citations: 5
  • Estimation of induced residual stresses and corrosion behavior of machined Inconel 718 superalloy: 3D-FE simulation and optimization
    K Nasralla, SK Shihab, AK Mahmoud, J Gattmah
    International Journal of Computational Materials Science and Engineering 11 … , 2022
    2022
    Citations: 5
  • 3D FE Analysis of Induced Residual Stresses and Forming Temperature in Hot Rolled AZ31 Mg Alloy
    J Gattmah, SK Shihab, MT Mohamed
    2021
  • Experimental investigation of surface integrity and multi-objective optimization of end milling for hybrid Al7075 matrix composites
    SK Shihab, J Gattmah, HM Kadhim
    Silicon 13 (5), 1403-1419 , 2021
    2021
    Citations: 32
  • Effects of increasing mass scaling in 3D explicit finite element analysis on the wire drawing process
    J Gattmah, SK Shihab, MT Mohamed, AL Abbas
    IOP Conference Series: Materials Science and Engineering 1076 (1), 012072 , 2021
    2021
    Citations: 13
  • Dissimilar arc stud welding AISI 304/AISI 1008: Mechanical properties
    FH Hameed, MT Mohamed, SA Nawi, J Gattmah
    IOP Conference Series: Materials Science and Engineering 1076 (1), 012079 , 2021
    2021
    Citations: 6
  • A new development of measurement technique for residual stresses generated by the cold tube drawing process with a fixed mandrel
    J Gattmah, F Ozturk, S Orhan
    The International Journal of Advanced Manufacturing Technology 108 (11 … , 2020
    2020
    Citations: 16
  • Numerical simulation of bending process for steel plate using finite element analysis
    J Gattmah, F Ozturk, S Orhan
    Arabian Journal for Science and Engineering 44 (12), 10285-10292 , 2019
    2019
    Citations: 19
  • SHEET METAL FORMING PROCESSES FOR VARIOUS MATERIALS USING FINITE ELEMENT ANALYSIS
    J Gattmah, MT Mohamed, SK Shihab
    1st International Conference on Advances in Mechanical and Mechatronics … , 2018
    2018
    Citations: 2

MOST CITED SCHOLAR PUBLICATIONS

  • Effects of process parameters on hot extrusion of hollow tube
    J Gattmah, F Ozturk, S Orhan
    Arabian Journal for Science and Engineering 42 (5), 2021-2030 , 2017
    2017
    Citations: 33
  • Experimental investigation of surface integrity and multi-objective optimization of end milling for hybrid Al7075 matrix composites
    SK Shihab, J Gattmah, HM Kadhim
    Silicon 13 (5), 1403-1419 , 2021
    2021
    Citations: 32
  • Experimental and finite element analysis of residual stresses in cold tube drawing process with a fixed mandrel for AISI 1010 steel tube
    J Gattmah, F Ozturk, S Orhan
    The International Journal of Advanced Manufacturing Technology 93 (1), 1229-1241 , 2017
    2017
    Citations: 21
  • Numerical simulation of bending process for steel plate using finite element analysis
    J Gattmah, F Ozturk, S Orhan
    Arabian Journal for Science and Engineering 44 (12), 10285-10292 , 2019
    2019
    Citations: 19
  • Effect of the process parameters on cold tube drawing with a fixed plug using finite element analysis for AISI 1010 steel
    J Gattmah, F Ozturk, S Orhan
    Sakarya Univ J Sci 21, 886-892 , 2016
    2016
    Citations: 17
  • A new development of measurement technique for residual stresses generated by the cold tube drawing process with a fixed mandrel
    J Gattmah, F Ozturk, S Orhan
    The International Journal of Advanced Manufacturing Technology 108 (11 … , 2020
    2020
    Citations: 16
  • Effects of increasing mass scaling in 3D explicit finite element analysis on the wire drawing process
    J Gattmah, SK Shihab, MT Mohamed, AL Abbas
    IOP Conference Series: Materials Science and Engineering 1076 (1), 012072 , 2021
    2021
    Citations: 13
  • Calculation of relative extrusion pressure for circular section by local coordinates system by using finite element method FEM
    JK Jabbar
    University of Diyala–College of Engineering , 2010
    2010
    Citations: 9
  • Dissimilar arc stud welding AISI 304/AISI 1008: Mechanical properties
    FH Hameed, MT Mohamed, SA Nawi, J Gattmah
    IOP Conference Series: Materials Science and Engineering 1076 (1), 012079 , 2021
    2021
    Citations: 6
  • Application of polymeric materials for 3D printed dentures: A review
    AR Ali, S Shihab, S Alazzawi, J Gattmah
    Diyala Journal of Engineering Sciences, 1-17 , 2024
    2024
    Citations: 5
  • Optimization of rolling parameters for enhancing the surface integrity of aluminum alloy
    EA Hussein, J Gattmah, AN Jaseem, SK Shibab
    Journal of Harbin Institute of Technology (New Series) 30 (6), 70-82 , 2023
    2023
    Citations: 5
  • Influencing the residual stresses in tubes drawn with a floating plug by changing tool parameters
    J Gattmah, F Ozturk, SK Shihab, S Orhan
    Journal of the Brazilian Society of Mechanical Sciences and Engineering 44 … , 2022
    2022
    Citations: 5
  • Estimation of induced residual stresses and corrosion behavior of machined Inconel 718 superalloy: 3D-FE simulation and optimization
    K Nasralla, SK Shihab, AK Mahmoud, J Gattmah
    International Journal of Computational Materials Science and Engineering 11 … , 2022
    2022
    Citations: 5
  • Die angle effect on the generated residual stresses in the inclined and final region during the aluminum extrusion
    J Gattmah, EA Hussein, AN Jaseem, SK Shihab
    Journal of Mechanical Science and Technology 38 (8), 4277-4286 , 2024
    2024
    Citations: 3
  • SHEET METAL FORMING PROCESSES FOR VARIOUS MATERIALS USING FINITE ELEMENT ANALYSIS
    J Gattmah, MT Mohamed, SK Shihab
    1st International Conference on Advances in Mechanical and Mechatronics … , 2018
    2018
    Citations: 2
  • Comparison with different models of tensile and compressive stress analysis on a cantilever beam model
    E DEMIR, I TOKTAS, MT OZKAN, J GATTMAH
    Owner: Girne American University Editor: Asst. Prof. Dr. İbrahim Erşan … , 2015
    2015
    Citations: 2
  • Comparison with different models of bending stress analysis of the cantilever beams under different profile section
    J Gattmah, I Toktas, MT Ozkan, E Demir
    materials and loads, Social GAU Journal & Applied Sciences 7 (11) , 2015
    2015
    Citations: 2
  • Assessment of induced residual stresses and microstructure of Al/B4C/FA composite extruded by equal channel angular pressing
    TQ Irhayyim, JQ Gattmah
    Advances in Science and Technology. Research Journal 19 (7) , 2025
    2025
    Citations: 1
  • Evaluation of microstructure and mechanical properties of Al1050/Al 2 O 3 /Gr composite processed by forming operation ECAP
    AM Hassan, J Gattmah, SK Shihab
    Open Engineering 14 (1), 20240041 , 2024
    2024
    Citations: 1
  • Fabrication of Two Layers Al/Cu Metal Composite by Roll Bonding Technique
    S Alzubaidi, J Gattmah, S Orhan
    Diyala Journal of Engineering Sciences 15 (4), 1-9 , 2022
    2022
    Citations: 1