Studi Eksperiment Dan Analisa Pengaruh Carbon Reinforced Terhadap Kekerasan Permukaan Dan Specific Wear Rate Pada Material Resin Epoxy

Pratama, Erza Nur (2020) Studi Eksperiment Dan Analisa Pengaruh Carbon Reinforced Terhadap Kekerasan Permukaan Dan Specific Wear Rate Pada Material Resin Epoxy. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dewasa ini, banyak sekali industri yang menggunakan material dengan penambahan reinforced tertentu. Dari penelitian sebelumnya tentang analisis laju keausan resin akrilik berpenguat serat pada dental prosthesis, menunjukkan hasil nilai laju keausan berkurang dengan adanya penambahan serat. Namun saat ini, belum ada penelitian yang mengkaji tentang laju keausan dan perubahan kekerasan pada material resin epoxy yang diberikan tambahan carbon reinforced. Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh dari penambahan carbon reinforced terhadap specific wear rate dan kekerasan permukaan dari material resin epoxy yang nantinya dapat digunakan sebagai acuan alternatif material pengganti untuk keperluan-keperluan tertentu. Pengujian dilakukan dengan menggunakan tribometer pin on disk dengan variasi material resin epoxy pada pin berupa penambahan reinforced carbon dengan fraksi volume sebesar 1 %, 3%, 5%, 7% serta material resin epoxy tanpa penambahan reinforced carbon. Kecepatan putar yang digunakan adalah sebesar 46 rpm dengan pembebanan 2 kg dan panjang lintasan 1000 m. Pengujian dilakukan masing-masing 3 kali untuk setiap variasi carbon reinforced dengan pembebanan, kecepatan, dan jarak lintasan yang konstan. Proses selanjutnya yaitu mengamati dan menganalisa struktur permukaan kontak. Berdasarkan penelitian yang telah dilakukan, dapat diketahui bahwa nilai kekerasan permukaan akan semakin meningkat seiring dengan bertambahnya konsentrasi carbon pada resin epoxy. Nilai kekerasan permukaan tertinggi terdapat pada spesimen dengan penambahan 7% carbon yaitu sebesar 79,889 HD, dan untuk nilai kekerasan permukaan terkecil terdapat pada spesimen dengan penambahan 0% carbon (tanpa carbon) yaitu sebesar 58,556 HD. Selanjutnya, nilai specific wear rate akan semakin kecil seiring dengan bertambahnya konsentrasi carbon pada resin epoxy. Spesimen dengan konsentasi 7% carbon memiliki nilai specific wear rate terkecil yaitu sebesar 0,000228111 mm3/Nm, serta spesimen dengan konsentrasi 0% carbon (tanpa carbon) memiliki nilai specific wear rate terbesar yaitu 0,003553388 mm3/Nm. Dapat disimpulkan bahwa penambahan carbon akan berbanding lurus dengan naiknya nilai kekerasan permukaan dan berbanding terbalik dengan nilai specific wear rate. Dari hasil foto mikro, dapat diketahui bahwa mekanisme keausan yang dominan terjadi adalah mekanisme keausan abrasif. ====================================================== Nowadays, many industries use materials with certain reinforced additions. From previous studies on the analysis of the wear rate of fiber-reinforced acrylic resin in dental prosthesis, the results show the value of wear rate decreases with the addition of fiber. However, at present, there are no studies that examine the rate of wear and hardness change in epoxy resin material given carbon reinforcement. This study aims to determine how the effect of adding carbon reinforced to the specific wear rate and surface hardness of the epoxy resin material which can later be used as an alternative reference substitute material for certain needs. The test is carried out using pin on disk tribometer with material variation of epoxy resin on the pin in the form of an increase in reinforced carbon with a volume fraction of 1%, 3%, 5%, 7% and epoxy resin material without the addition of reinforced carbon. The rotational speed used is 46 rpm with a load of 2 kg and a track length of 1000 m. The test is carried out 3 times for each variation of carbon reinforced with constant load, speed, and distance. The next process is to observe and analyze the contact surface structure. Based on research that has been done, it can be seen that the value of surface hardness will increase with increasing carbon concentration in epoxy resin. The highest surface hardness value was found in specimens with the addition of 7% carbon in the amount of 79,889 HD, and for the smallest surface hardness value in specimens with the addition of 0% carbon (without carbon) in the amount of 58,556 HD. Furthermore, the specific wear rate value will be smaller along with increasing carbon concentration in epoxy resin. Specimens with a concentration of 7% carbon have the smallest specific wear rate value of 0,000228111 mm3/Nm, and specimens with a concentration of 0% carbon (without carbon) have the largest specific wear rate value of 0.003553388 mm3/Nm. It can be concluded that the addition of carbon will be directly proportional to the increase in the surface hardness value and inversely proportional to the specific wear rate value. From the results of micro photographs, it can be seen that the dominant wear mechanism that occurs is the abrasive wear mechanism.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: surface hardness, carbon, specific wear rate, epoxy resin, kekersan permukaan, carbon, specific wear rate, resin epoxy
Subjects: T Technology > TN Mining engineering. Metallurgy > TN690 Metallography. Physical metallurgy
T Technology > TS Manufactures > TS170 New products. Product Development
T Technology > TS Manufactures > TS171 Product design
Divisions: Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User: Pratama Erza Nur
Date Deposited: 28 Aug 2020 05:52
Last Modified: 28 Aug 2020 05:52
URI: https://repository.its.ac.id/id/eprint/81331

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