Authors:
Muhammad Rafiq Yanhar
1
;
Ahmad Bakhori
2
;
Siti Rahmah Sibuea
2
and
Abdul Haris Nasution
2
Affiliations:
1
Faculty of Engineering, Universitas Islam Sumatera Utara
;
2
Keyword(s):
Mesh size, ganoderma boninense mushroom, tensile strength, modulus of elasticity.
Abstract:
This study aims to determine the effect of mesh size of ganoderma boninense mushroom filler on tensile strength and modulus of elasticity. The composite reinforcement particle mesh varies 20, 30, 40, and 50. The mushroom is soaked with NaOH solution for 1 hour to remove dirt and sap that can reduce the bonds between matrix and particles. Subsequently, the mushrooms are made into mesh 50-sized particles using a grinder with a rotation of 28,000 rpm. From the test results, it can be seen that the highest tensile strength of 31.48 MPa is in the composite with 40 mesh. While in 20 mesh and 30 mesh, the tensile strength slightly decreases to 21.16 MPa and 30.22 MPa. From the test results, it can be seen that the lowest modulus of elasticity is in the composite with 20 mesh. Increasing to 30 and 40 mesh makes the modulus of elasticity rise to 193.6 MPa and 252 MPa. This shows that the more presence of ganoderma fungi in the composite causes the composite to become more elastic, thereby it
increases the modulus of elasticity, and decreases tensile strength.
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