Please use this identifier to cite or link to this item: https://repositori.uma.ac.id/handle/123456789/29489
Title: Analisis Kekuatan Lentur Hasil Pengelasan SMAW pada Proses Tailor Welder Blank Menggunakan Bahan Karbon yang Berbeda Kandungan Karbon
Other Titles: Flexural Strength Analysis of SMAW Welding Results in the Tailor Welder Blank Process Using Carbon Materials with Different Carbon Contents
Authors: Wijaya, M Bagas Brahma
metadata.dc.contributor.advisor: Siahaan, Muhammad Yusuf Rahmansyah
Keywords: SMAW Welding;TWB;Flexural Strength;Carbon Content;Kekuatan Lentur;Kandungan Karbon
Issue Date: 6-Oct-2025
Publisher: Universitas Medan Area
Series/Report no.: NPM;218130007
Abstract: Analisis Kekuatan Lentur Hasil Pengelasan SMAW pada Proses Tailor Welded Blank (TWB) Menggunakan Bahan Logam yang Berbeda Kandungan Karbon. Penelitian ini dilatarbelakangi oleh pentingnya pengelasan SMAW dalam industri otomotif dan konstruksi, khususnya pada proses Tailor Welded Blank (TWB) yang menyambungkan logam dengan kandungan karbon berbeda. Permasalahan yang dikaji adalah bagaimana pengaruh perbedaan kandungan karbon terhadap kekuatan lentur hasil pengelasan SMAW. Tujuan penelitian yaitu membuat spesimen uji, melakukan pengujian lentur statis sesuai standar ASTM E290, dan menganalisis perbedaan kekuatan sambungan las berdasarkan variasi material.Metode penelitian dilakukan secara eksperimental dengan menggunakan plat baja ST-37 dan AISI 1050. Spesimen dibuat melalui proses pemotongan, pengelasan SMAW pada arus 90 A, dan pengujian lentur menggunakan Universal Testing Machine. Analisis data dilakukan dengan perhitungan tegangan lentur maksimum berdasarkan rumus uji lentur tiga titik. Landasan teori penelitian meliputi prinsip pengelasan SMAW, karakteristik TWB, serta pengaruh kandungan karbon terhadap sifat mekanik logam.Hasil penelitian menunjukkan bahwa spesimen AISI 1050–AISI 1050 memiliki tegangan lentur tertinggi (894,00 MPa), diikuti ST-37–AISI 1050 (876,66 MPa), sedangkan ST-37–ST-37 memiliki nilai terendah (853,78 MPa). Disimpulkan bahwa kandungan karbon tinggi meningkatkan kekuatan lentur sambungan, sedangkan pengelasan material berbeda menghasilkan kekuatan cukup baik meski zona las kurang homogen. Flexural Strength Analysis of SMAW Welding on Tailor Welded Blank (TWB) Using Different Carbon Content Metals. This study is motivated by the importance of SMAW welding in the automotive and construction industries, particularly in the Tailor Welded Blank (TWB) process which joins metals with different carbon contents. The main problem examined is how the difference in carbon content affects the flexural strength of SMAW welds. The objective of this research is to prepare test specimens, conduct static bending tests according to ASTM E290 standards, and analyze the strength variations of welded joints based on different materials.The research method was experimental using ST-37 and AISI 1050 steel plates. Specimens were fabricated through cutting, SMAW welding at 90 A current, and bending tests using a Universal Testing Machine. Data analysis was carried out by calculating the maximum flexural stress based on the three-point bending formula. The theoretical basis includes the principles of SMAW welding, TWB characteristics, and the influence of carbon content on the mechanical properties of metals.The results showed that AISI 1050–AISI 1050 specimens had the highest flexural stress (894.00 MPa), followed by ST-37–AISI 1050 (876.66 MPa), while ST-37–ST- 37 specimens had the lowest value (853.78 MPa). It can be concluded that higher carbon content increases flexural strength, while welding dissimilar carbon steels provides sufficient strength despite less homogeneous heat- affected zones.
Description: 68 Halaman
URI: https://repositori.uma.ac.id/handle/123456789/29489
Appears in Collections:SP - Mechanical Engineering

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