Volume 11 ~ Issue 4

Introduction: The publication of medicinal plants typical of the West Papua region is rare compared to those found in Java Island. Therefore, this study aims to obtain raw data on traditional medicines native to West Papua. The information collected was in the form of the local name, plant part used, method of manufacture, and administration to patients. Methods: This research used a survey method through questionnaires and personal interviews, and the responses obtained were documented...........
Author Keywords:- Ethnobotanical indigenous knowledge of traditional.

Unmanned Aerial Vehicles (UAVs) have become an integral part of aerospace, defense, surveillance, and commercial applications due to their autonomy, efficiency, and versatility. This study explores the fabrication and performance enhancement of UAVs using a whirling apparatus, a system designed to simulate aerodynamic forces, optimize flight stability, and improve propulsion efficiency............
Author Keywords:- morphed, fabric wing, optimization lift force.

Gas turbine blades operate under extreme thermal, mechanical, and aerodynamic stresses, making them susceptible to malfunctions such as creep, fatigue, oxidation, erosion, and foreign object damage (FOD). This study investigates the failure mechanisms of gas turbine blades, analyzing the causes, effects, and possible mitigation strategies to improve performance and durability. A detailed metallurgical and mechanical analysis is conducted on failed turbine blades using techniques such as scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), hardness testing, and microstructural evaluation...........
Author Keywords:- ANSYS, Helicopter rotor spar design, Composite material, FEM, Metal matrix composite.

Pressure die casting is a widely used manufacturing process for producing high-precision metal components in industries such as automotive, aerospace, and electronics. However, achieving optimal casting quality, minimal defects, and high efficiency requires an advanced approach to process design and component development. This study presents a novel developmental framework for enhancing the design, material selection, and manufacturing process of pressure die-cast components...........
Author Keywords:- Ejector pin, Air Vent, Hot-tearing.

The main landing gear (MLG) of an aircraft is subjected to high cyclic loading due to takeoff, landing, taxiing, and ground operations, making fatigue failure a major concern for structural integrity and flight safety. This study focuses on assessing fatigue behavior in the MLG, identifying critical stress regions, and proposing failure prevention strategies............
Author Keywords:- ANSYS, Catia V5, Landing gear,Fatigue loading, Total Deformation ,Life Cycle, Safety Factor.

Composite materials are widely used in aerospace, automotive, and structural applications due to their high strength-to-weight ratio, corrosion resistance, and customizable mechanical properties. However, optimizing the fiber orientation, stacking sequence, and material composition to achieve the best performance is a complex challenge. This study explores the application of genetic algorithms (GA) for the optimization of composite lamina, focusing on maximizing mechanical strength, minimizing weight, and enhancing overall structural performance...........
Author Keywords:- Composite lamina, GA, Ansys Parametric Design Language, Composite box wing.

Electroless nickel (EN) coating is widely used in industrial applications due to its superior corrosion resistance, hardness, and uniform deposition on complex surfaces. Incorporating alumina (Al₂O₃) particles through co-deposition further enhances the mechanical and wear properties of the coating. This study investigates the impact of electroless nickel coating combined with alumina particle co-deposition on the surface characteristics, mechanical strength, and tribological performance of metallic substrates...........
Author Keywords:- SEM, composite coating, wear, hardness; electroless NiP.

Bevel gears play a crucial role in power transmission systems, especially in automotive, aerospace, and industrial applications. The optimization of their design and manufacturing process is essential for enhancing performance, reducing production costs, and improving durability. This study focuses on the optimization of bevel gear design using advanced computer-aided engineering (CAE) tools, finite element analysis (FEA), and modern manufacturing techniques...........
Author Keywords:- Hypoid gears; Spiral bevel gears; meta-heuristics; electrochemical honing.

Reheater tubes play a critical role in thermal power plants by superheating steam to improve turbine efficiency. However, prolonged exposure to high temperatures, pressure fluctuations, and corrosive environments makes them susceptible to failures such as creep rupture, oxidation, thermal fatigue, and erosion-corrosion. This study investigates the failure mechanisms of reheater tubes and proposes optimization strategies to enhance their performance and lifespan...........
Author Keywords:- HRH Coil, Reheater, CRH Coil, Tube Failures, Material Selection, Final Temperature, Economy.