Firmansyah, Diaz Ardi (2023) Studi Ekperimental Pengaruh Siklus Forging dan Diameter Material pada Proses Hot Forging Femoral Stem dengan Material Ti-6Al-4V terhadap Struktur Mikro dan Kekerasan. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Total Hip Arthroplasty adalah prosedur ortopedi untuk mengembalikan fungsi sendi semula dengan mengganti sendi pinggul dengan sendi pinggul buatan atau implan. Sayangnya sampai saat ini, kebutuhan akan implan THA di Indonesia yaitu sekitar 6.600 impan pertahun yang masih harus dipenuhi oleh produk impor. Impor implan memiliki kelemahan terutama pada bagian femoral stem dimana umumnya femoral stem implan THA impor dibuat dengan anatomi dan mofometri orang eropa (ras Kauskasoid) yaitu tentu saja memiliki perbedaan dibanding anatomi dan morfometri tulang orang Indonesia (ras Mongoloid). Oleh karena itu, dibutuhkan femoral stem implan THA yang didesain sesuai dangan anatomi dan morfometri tulang Indonesia. Pada penilitian ini femoral stem akan dibuat dengan proses hot forging yang dapat menghasilkan sifat mekanik implan yang lebih baik untuk memenuhi kebutuhan masyarakat indonesia. Penelitian ini menggunakan material Ti-6Al-4V sebagai raw material femoral stem dengan parameter hot forging yang digunakan meliputi pengaruh jumlah siklus forging dan diameter material Ti-6Al-4V dengan diamater awal 22 mm dan 25 mm. Dari material awal tersebut akan dibentuk dengan proses awal yaitu pre-forging untuk merubah menjadi spesimen bengkok sebelum dilakukannya proses hot forging. Pada tahap sebelum proses pre-forging dan hot forging, spesimen akan dipanaskan pada suhu 900oC selama selama ±5 jam kemudian diberikan beban 250 tonforce untuk membentuk spesimen sesuai dies femoral stem. Untuk proses 2x siklus forging dilakukan setelah membuang flashing area pada spesimen femoral stem hasil 1x siklus forging. Pengaruh dari proses forging, diameter awal spesimen, dan jumlah siklus forging akan diamati dengan melakukan pengujian metalografi dan kekerasan sehingga data dari hasil akhir spesimen femoral stem dapat disesuaikan dengan ASTM F-136 dalam eksperimen hot forging femoral stem. Hasil penelitian dari hot forging femoral stem Ti-6Al-4V menunjukkan bahwa spesimen femoral stem hasil 1x siklus forging memiliki bentuk struktur mikro equiaxed dan hasil 2x siklus forging memiliki bentuk struktur mikro globular dengan ukuran butir rata-rata pada spesimen femoral stem diameter 22 mm 1x siklus forging, diameter 22 mm 2x siklus forging, diameter 25 mm 1x siklus forging, diameter 25 mm 2x siklus forging masing-masing sebesar 1.55 μm, 1.79 μm, 1.75 μm, 2.49 μm. Berdasarkan data nilai kekerasan hasil pengujian, material Ti-6Al-4V yang optimal dan sesuai dengan ASTM F-136 untuk diproduksi sebagai femoral stem melalui proses hot forging ialah material Ti-6Al-4V dengan diameter awal 22 mm yang memiliki nilai kekerasan dengan label spesimen D22 S1 dan D22 S2 masing-masing sebesar 446.55 HV dan 405.27 HV
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Total Hip Arthroplasty is an orthopaedics procedure to restore the function of the original joint by replacing the hip joint with an artificial hip joint or implant. Unfortunately, until now, the need for THA implants in Indonesia is around 6,600 dreams per year which still must be met by imported products. Imported implants have weaknesses, especially in the femoral stem where generally imported THA implant femoral stems are made with European anatomy and morphometry (Caucasoid race), which of course has differences compared to the anatomy and bone morphometry of Indonesians (Mongoloid race). Therefore, a femoral stem THA implant is needed that is designed according to Indonesian bone anatomy and morphometry. In this research, femoral stem will be made with a hot forging process that can produce better implant mechanical properties to meet the needs of the Indonesian people. This research uses Ti-6Al-4V material as a raw femoral stem material with hot forging parameters used including the influence of the number of forging cycles and the diameter of Ti- 6Al-4V material with an initial diameter of 22 mm and 25 mm. From the initial material, it will be formed by an initial process, namely pre-forging to turn into bent specimens before the hot forging process is carried out. At the stage before the pre-forging and hot forging process, the specimen will be heated at 900oC for ±5 hours then given a load of 250 ton force to form the specimen according to the femoral stem dies. For the 2x forging cycle process, it is carried out after removing the flashing area on the femoral stem specimen, resulting in 1x forging cycle. The effect of the forging process, the initial diameter of the specimen, and the number of forging cycles will be observed by conducting metallographic and hardness testing so that the data from the final femoral stem specimen can be adjusted to ASTM F-136 in hot forging femoral stem experiments. The results of research from hot forging femoral stem Ti-6Al-4V showed that femoral stem specimens resulting from 1x forging cycles had the form of microstructures withers and the results of 2x forging cycles had the form of globular microstructures with an average grain size on femoral stem specimens diameter 22 mm 1x forging cycles, diameter 22 mm 2x forging cycles, diameter 25 mm 1x forging cycles, diameter 25 mm 2x forging cycles of 1.55 μm, 1.79 μm, 1.75 μm, 2.49 μm, respectively. Based on the hardness value data of the test results, the optimal Ti-6Al-4V material and in accordance with ASTM F-136 to be produced as a femoral stem through the hot forging process is Ti-6Al-4V material with an initial diameter of 22 mm which has a hardness value with specimen labels D22 S1 and D22 S2 of 446.55 HV and 405.27 HV respectively
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Femoral stem, Hot forging, Kekerasan, Struktur mikro, Ti-6Al-4V, Femoral stem, Hot forging, Hardness, Microstructure, Ti-6Al-4V |
| Subjects: | T Technology > T Technology (General) > TA404 Materials--Biodegradation T Technology > TA Engineering (General). Civil engineering (General) > TA418.42 Hardness properties and tests. Hardness--Testing. T Technology > TN Mining engineering. Metallurgy > TN690 Metallography. Physical metallurgy |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Diaz Ardi Firmansyah |
| Date Deposited: | 04 Aug 2023 08:45 |
| Last Modified: | 04 Aug 2023 08:45 |
| URI: | http://repository.its.ac.id/id/eprint/101695 |
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