ANALYSIS OF MACROSTRUCTURE, TENSILE STRENGTH, AND HARDNESS OF COPPER POWDER AND ULIN WOOD POWDER MIXTURE WITH WASTE ALUMINIUM COMPOSITE PANEL (ACP) AS THE MATRIX

Adytia Eka Candra Sunaryo¹, Wawan Trisnadi Putra², Rizki Dwi Ardika³
Mechanical Engineering Study Program, Universitas Muhammadiyah Ponorogo

e-mail: adytiaecs10tkra2019@gmail.com

ABSTRACT

Waste Aluminium Composite Panel (ACP) as a composite material is one of the efforts to reduce waste while producing value-added materials. This study aims to analyze the effect of variations in copper powder and ulin wood powder composition in a waste ACP matrix on the macrostructure, tensile strength, and hardness of the composite. The specimens were fabricated using the hot press method at a temperature of 130°C and a pressure of 2.5 bar, with composition variations determined using the Design of Experiment (DOE) method. The tests included tensile testing based on ASTM D638 Type IV, Shore D hardness testing based on ASTM D2240, and macrostructure observation using a stereo microscope. The results showed that material composition significantly affected the mechanical properties of the composite. The highest tensile strength of 4.06 MPa was obtained with a composition of 70% PE, 18% ulin wood powder, and 5% copper powder, while the highest hardness value reached 60.833 Shore D with the same composition. Macrostructure observations showed that a more homogeneous filler distribution resulted in better interfacial bonding, thereby improving the mechanical properties of the composite. Therefore, waste ACP combined with ulin wood powder and copper powder has the potential to be developed as an environmentally friendly composite material for engineering applications.

Keywords: ACP Waste, Ulin Wood Powder, Copper Powder, Macrostructure Test, Tensile Test