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All Journal ARMATUR : Artikel Teknik Mesin dan Manufaktur International Journal of Mechanical, Industrial and Control Systems Engineering
Salim Subarkah
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Aerospace Engineering Automotive Engineering Computer Science & IT Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Sutrisno Effect of Clay Powder Composition on the Tensile Strength and Burn Resistance Properties of Composite Materials sutrisno, sutrisno -; Salim Subarkah; Nur Chandra Dana Agusti; Gatot Soebiyakto
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 5 No. 2 (2024): ARMATUR: Artikel Teknik Mesin dan Manufaktur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v5i2.5636

Abstract

Composite materials are developing very rapidly. Composite materials are widely used in the automotive industry. Composite materials used in industry are required to have burn resistance. In transportation service regulations, it has been suggested that this material must be burnt-resistant to reduce the high risk. In this research, additional materials were used to make composite materials. The extra material is clay, which is obtained from grinding red bricks. The clay grain size is mesh 200. The variations used are 0:2:88; 3:9:88: 6:6:12; 9:3:88; 12:0:88 (clay, fiber, polyester resin: %). This research aims to determine composite materials' tensile strength and burn resistance. The method used is printing specimens using the hand layup method. The tests carried out were tensile tests, burn tests, and SEM photos. The research results show that at a composition of 0% clay, the tensile strength is 55.65 MPa. The maximum tensile strength at a percentage of 3% clay is 58.67 MPa. The tensile strength decreases at percentages of 6, 9, and 12 clay. Maximum burn resistance at a percentage of 12% clay. The smaller the clay percentage, the higher the burning speed. From the test results, the percentage suitable for use in industry is 3% clay and 9% fiber. This material has tensile strength that meets standards and good burn resistance.
Design and Simulation of Screw Flow in a Prototype Injection Molding Machine Using Recycled Polypropylene Riswan E. W. Susanto; Ahsin Fahmi M; Hafidzul Ulum; Rima Z. K. Nisak; Salim Subarkah
International Journal of Mechanical, Industrial and Control Systems Engineering Vol. 2 No. 2 (2025): June :International Journal of Mechanical, Industrial and Control Systems Engin
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ijmicse.v2i2.334

Abstract

Plastic waste is currently still a serious problem for society due to the lack of sensitivity to environmental problems and the impact of careless disposal of plastic waste in many places. The injection molding process on industry scale often faces obstacles such as machines that have not worked efficiently, injection capacity that is unable to fill the mold completely, and the emergence of product defects due to plastic flow that begins to freeze before the entire cavity is completely filled. This study aims to design and simulate a prototype injection molding machine with a capacity of 4 tensile test specimens (total volume 28.5 cm³) in order to overcome these problems and to adjust the practicum needs of mechanical engineering students. The design process is carried out with SolidWorks software for 3D design, as well as flow simulation using SolidWorks Plastics and Flow Simulation with recycled Polypropylene (PP) material at melting temperature ± 230 ° C and injection pressure ± 5.3 MPa. The design results in a machine with dimensions of 1273 × 400 × 826 mm equipped with main components in the form of a frame, electric motor and gearbox, hopper, body safety, wheels, piston cylinder, control panel, heater, screw with barrel, and mold. SolidWorks Plastics simulation shows that the plastic flow fills the mold evenly with a filling time of 10.93 seconds, cycle time of 83.94 seconds, and maximum pressure of 5.38 MPa in the gate area, while Flow Simulation simulation shows a spiral flow pattern from the hopper to the end of the mold without backflow, with a mass flow rate of 0.0227 kg/sec and an average pressure of 97.765 Pa. These results prove that the design and simulation can improve process efficiency and mold quality
Co-Authors Ahsin Fahmi M Gatot Soebiyakto Hafidzul Ulum Nur Chandra Dana Agusti Rima Z. K. Nisak Riswan E. W. Susanto Sutrisno, Sutrisno -