Bimasakti Muda, Aldo (2021) Efek Sudut Chamfer terhadap Kekuatan Puntir Sambungan Las Gesek Beda Diameter Al-Mg-Si. Sarjana thesis, Universitas Brawijaya.
Abstract
"Solid State Welding memiliki banyak macam pengelasan, salah satunya adalah Continous Drive Friction Welding (CDFW). Prinsip kerja CDFW memanfaatkan panas akibat gesekan mekanika yang terjadi dari spesimen yang bergerak dan yang stasioner, tetapi di CDFW tidak terjadi peleburan base metal dan tidak ada filler yang digunakan. Hasil dari gesekan ini menyebabkanpermukaan yang bergesekan mengalami pengikatan atom akibat melakukan kontak mekanis tersebut.Daerah tersebut dinamakan Heat Affected Zone (HAZ), daerah ini dipengaruhi oleh seberapa besar heat input yang nantinya akan mempengaruhi juga hasil sambungan seperti apa. Metode pengelasan ini merupakan suatu pilihan metode untuk penyambungan jenis logam yang sama (similar) maupun jenis logam yang berbeda (dissimilar). Variasi sudut chamfer pada sisi diam mempengaruhi hasil kekuatan puntir pada Al-Mg-Si. Pada penelitian kali ini, data-data yang didapatkan adalah nilai kekuatan puntir dan temperatur pada saat proses pengelasan. Pada penelitian ini dengan tekanan hidrolik awal sebesar 50 bar dan tekanan hidrolik akhir sebesar 400 bar menghasilkan sambungan las gesek yang memiliki kekuatan puntir tertinggi sebesar 188,93 MPa dihasilkan oleh spesimen dengan sudut chamfer 30°, lalu kekuatan puntir terendah sebesar 151,56 MPa dimiliki oleh spesimen dengan sudut chamfer 90°. Hal itu dipengaruhi oleh fenomena berupa panas yang masuk (heat input) yang terjadi pada saat pengelasan yang disebabkan beda luas bidang kontak saat pengelasan akibat variasi beda sudut chamfer."
English Abstract
Solid State Welding have many types of welding process, one of them is Continuous Drive Friction Welding (CDFW). Basic principle of CDFW is using the heat that generated from mechanical friction that occurs at both specimen while the specimen placed stationery and rotating, but CDFW did not melt the specimen and no filler is used at the process. Atomic bonding is the result from the friction at the surface, this happened because there is a mechanical contact from the specimen. That zone is named Heat Affected Zone(HAZ), this zone is effected by how much the heat input that generated and this also will effect what kind of joint that will become. The reason why this research was held because in the past there was no research about this reasearch so we want to know the suitable parameter that can produce the strongest tensile strength. This welding method is used for both similar metal and dissimilar metal. Chamfer angle of specimen that was placed stationery was used as a variation to knew how will the chamfer angle affects the result from torsion strength Al-Mg-Si. In this experiment, the data that will generated is the value of torsion strength and the temperature while welding process is held. The amount of time needed for the welding process is 12 seconds. Chamfer angle that was needed in this experiment is 30°, 45°, 60°, dan 90°. In this experiment, the minimum amount of hidrolic pressure that applied at the start of experiment was 50 bar, while the maximum amount of pressure that applied in this experiment was 400 bar. The result was a joint with maximum amount torsion strength allowed 188,93 MPa with specimen of chamfer angle 30° , while the specimen with chamfer angle 90° could only allow 151,56 MPa. This result was happened because the phenomenon of how much the heat input generated from the welding process that occurs at the surface of the specimen. The chamfer that applied at specimen will affect the amount of how much the surface area that used for friction welding, and that amount of surface area will affect how much the heat input was generated from that process. Keywords: Continuous Drive Friction Welding, Sudut Chamfer, Torsion Strength, Aluminium A6061
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 621.8 |
| Uncontrolled Keywords: | Kata Kunci: Continuous Drive Friction Welding, Sudut Chamfer, Kekuatan Puntir, Aluminium A6061--Continuous Drive Friction Welding, Sudut Chamfer, Torsion Strength, Aluminium A6061 |
| Subjects: | 600 Technology (Applied sciences) > 621 Applied physics > 621.8 Machine engineering |
| Depositing User: | Unnamed user with email gaby |
| Date Deposited: | 19 Oct 2021 07:57 |
| Last Modified: | 22 Feb 2022 08:28 |
| URI: | http://repository.ub.ac.id/id/eprint/184071 |
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Text (DALAM MASA EMBARGO)
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