THE EFFECT OF EXTRUSION MACHINE TEMPERATURE ON MECHANICAL PROPERTIES OF FILAMENT PRODUCED FROM RECYCLED PLA

Nanang Ali Sutisna, Reza Renaldi — Fri, 10 Oct 2025 00:00:00 +0000

Fused Deposition Modelling (FDM) technology often known as 3D printing, is the most frequently used in additive manufacturing technology for polymeric material and has a wide range of application in numerous industries. In this method, the product is created by heating thermoplastic filament, extruding it through a nozzle and layer by layer depositing on the build plate of 3D printer. Also in making 3D printing product, it usually requires support which is the backbone of a 3D printing product and usually those things are would be discarded and turns the filament into waste. The research is to study the effect of extruding temperature on recycled PLA filament on mechanical properties. The experiment result shows that recycled PLA filament with extruding temperature of 170˚C, 175˚C, and 180˚C has UTS value 61.3 MPa, 64.4 MPa, 42.9 MPa respectively, compared to commercial PLA filament has UTS value of 76.9 MPa. It can be observed that the trend is decreasing, the UTS value of recycled PLA filament at 170˚C, 175˚C, and 180˚C decreased from commercial PLA filament about 20.2%, 16.2%, and 39.5%, then it can be concluded that the best temperature for making recycled PLA filament and has strength closes to commercial PLA filament is 175˚C. So it produces good diameter of the filament. The optimum setting for printing the filament is at 190˚C it produces the smoothest result of the object wall compared to the other two parameters.

DESIGN AND ANALYSIS OF DRUM BRAKE PADS FROM PALM KERNEL SHELL COMPOSITE BY USING REVERSE ENGINEERING AND FINITE ELEMENT METHOD

Fri, 10 Oct 2025 00:00:00 +0000

The braking system is an important component of a vehicle. This is closely related to global vehicle accident data, which reaches 1.35 million per year, so a braking system with the right material composition is needed. There are two types of braking systems: disc brakes and drum brakes. Among these two types of materials, disc brakes are commonly used in braking systems for both four-wheeled and two-wheeled vehicles. However, disc brake systems are more expensive than drum brakes. The development of drum brakes aims to achieve a more cost-effective and efficient braking system. In this study, the type of brake being researched is the drum brake system on motorcycle. The old brake pad type requires development in both structure and material because the old brake pad model requires the entire brake pad assembly to be replaced when the brake pad is worn out. If the brake pad with the mounting bracket can be disassembled and reassembled when the brake pad is worn out, the brake fabrication cost can be reduced by 10-30%. Through a reverse engineering approach for development, a new brake pad design that can be disassembled and reassembled was obtained. Furthermore, material updates using natural fiber composites were employed for more environmentally friendly brake pads. Palm kernel shell (PKS) composite was selected due to the abundance of palm oil waste from plantations in Indonesia. The composite composition and material properties of PKS were referenced from previous research. Finite element method (FEM) analysis using ANSYS was conducted to understand how the PKS composite performs during braking. The results of the ANSYS test indicate that PKS material has potential for experimental testing through direct material testing. stress values, and temperature enable better absorption of braking heat during braking, indicating that further research can be conducted.

Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics)

THE EFFECT OF EXTRUSION MACHINE TEMPERATURE ON MECHANICAL PROPERTIES OF FILAMENT PRODUCED FROM RECYCLED PLA

DESIGN AND ANALYSIS OF DRUM BRAKE PADS FROM PALM KERNEL SHELL COMPOSITE BY USING REVERSE ENGINEERING AND FINITE ELEMENT METHOD