Now showing 1 - 3 of 3
  • Publication
    The influence of shock wave surface treatment on vibration behavior of Semi-Solid State Cast Aluminum—Al₂SiO₅ composite
    ( 2022)
    Paul Sureshkumar Samuel Ratna Kumar
    ;
    Peter Madindwa Mashinini
    ;
    Mahaboob Adam Khan
    ;
    Marimuthu Uthayakumar
    ;
    Ainagul Rymkulovna Toleuova
    ;
    Dariusz Mierzwiński
    ;
    Kinga Korniejenko
    ;
    The semi-solid state casting procedure was used to manufacture as-cast AA5083, 1 and 2 wt.% of aluminosilicate reinforced composite material. After solidification, developed as-cast materials were subjected to shock wave treatment in the subsonic wind tunnel. Various techniques were used to evaluate the change in shock wave exposure, including mechanical and structural analysis, which is a field dedicated to the study of vibrations and other material properties. The research methods involved developed material grain structure and surface morphology, such as field emission scanning electron microscope, X-ray diffraction, and the energy dispersive method. This study shows that the microhardness value of the matrix material is increased before and after exposure to shock wave treatment compared to the developed composite material. The natural frequency of the developed composite increases as a result of the addition of aluminosilicate reinforcement before and after the shock wave. In addition, the shifting of frequency mechanism is studied to know the influence of shock wave surface treatment. The results obtained show the potential of the application of this material in the area of robotic parts.
  • Publication
    Electric discharge machining on stainless steel using a blend of copper and fly ash as the electrode material
    ( 2022)
    Ponnambalam Balamurugan
    ;
    Marimuthu Uthayakumar
    ;
    Manickaraj Pethuraj
    ;
    Dariusz Mierzwiński
    ;
    Kinga Korniejenko
    ;
    In the current work, several composites made with fly ash reinforcements are used to conduct electrical discharge machining (EDM) on stainless steel that is commercially accessible. Four composites were prepared with 2.5 to 10% reinforcement of fly ash with steps of 2.5%, copper is used as the matrix material. The specimens were created using the powder metallurgy method, which involved compaction pressures of 450 MPa and 900 °C for 90 min of sintering. The prepared composites are used as the electrode tool for EDM. EDM studies were carried out at two different current amplitudes (5A and 15A) by maintaining the Pulse on time (100 µs), Pulse off time (50 µs), and the depth of machining as 2 mm. The findings show that the addition of more fly ash to the copper matrix increased the material removal rate when cutting the SS304 plate and had a negative impact on the tool. The composite loses its ability to transfer heat during machining as the level of fly ash increases, raising the temperature in the copper matrix and causing the copper to melt more quickly at the electrode interface during machining, leading to increased electrode wear. While tool life was reduced because of the increase in current amplitude, machinability was enhanced.
      1  9
  • Publication
    The influence of shock wave surface treatment on vibration behavior of Semi-Solid State Cast Aluminum—Al₂SiO₅ composite
    (MDPI, 2022-11-08)
    Paul Sureshkumar Samuel Ratna Kumar
    ;
    Peter Madindwa Mashinini
    ;
    Mahaboob Adam Khan
    ;
    Marimuthu Uthayakumar
    ;
    Ainagul Rymkulovna Toleuova
    ;
    Dariusz Mierzwiński
    ;
    Kinga Korniejenko
    ;
    The semi-solid state casting procedure was used to manufacture as-cast AA5083, 1 and 2 wt.% of aluminosilicate reinforced composite material. After solidification, developed as-cast materials were subjected to shock wave treatment in the subsonic wind tunnel. Various techniques were used to evaluate the change in shock wave exposure, including mechanical and structural analysis, which is a field dedicated to the study of vibrations and other material properties. The research methods involved developed material grain structure and surface morphology, such as field emission scanning electron microscope, X-ray diffraction, and the energy dispersive method. This study shows that the microhardness value of the matrix material is increased before and after exposure to shock wave treatment compared to the developed composite material. The natural frequency of the developed composite increases as a result of the addition of aluminosilicate reinforcement before and after the shock wave. In addition, the shifting of frequency mechanism is studied to know the influence of shock wave surface treatment. The results obtained show the potential of the application of this material in the area of robotic parts.
      3  13