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All Journal Jurnal Abdi Ilmu Jurnal Komunitas: Jurnal Pengabidian Kepada Masyarakat INFOKUM JiTEKH (Jurnal Ilmiah Teknologi Harapan) JENIUS: Jurnal Terapan Teknik Industri Jurnal VORTEKS Jurnal SImetri Rekayasa Jurnal Industri dan Teknologi Samawa (JITSA) Prioritas : Jurnal Pengabdian Kepada Masyarakat IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Jurnal Indonesia Sosial Teknologi IRA Jurnal Pengabdian Kepada Masyarakat Jurnal Polimesin IESM
Yetti Meuthia Hasibuan
Universitas Harapan Medan
Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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Penerapan Metode AHP Dan TOPSIS Untuk Pemilihan Supplier Pada Industri Manufaktur Bahan Baku Sabun Yetti Meuthia Hasibuan; Zaharuddin; M. Ade Kurniawan
Industrial Engineering System and Management Journal Vol. 7 No. 1 (2026): Vol 7 No 1 Februari 2026
Publisher : LPPM Universitas Potensi Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

PT. Berlian Eka Sakti Tangguh Medan merupakan perusahaan manufaktur yang memproduksi Soap Plant (pabrik sabun) dan melakukan seleksi awal dalam menentukan supplier bahan baku. Saat ini terdapat lima supplier yang bekerja sama dengan perusahaan. Penelitian ini bertujuan untuk merancang sistem pendukung keputusan guna menentukan supplier terbaik dari 5 supplier utama berdasarkan kemampuan dalam memenuhi kebutuhan bahan baku perusahaan. Metode yang digunakan adalah Analytical Hierarchy Process (AHP) untuk menentukan bobot kriteria dan Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) untuk melakukan pemeringkatan alternatif supplier. Hasil penelitiandengan metode AHP dan TOPSIS samamenunjukkan bahwa PT. Sumber memperoleh nilai preferensi tertinggi sebesar 0,6996 dan menempati peringkat pertama. Selanjutnya diikuti oleh PT. Seikishin (0,5742), PT. Duta Foam (0,5257), PT. Bustico (0,4022), dan PT. Tiga Saudara (0,2980). Hasil ini menunjukkan bahwa kombinasi metode AHP dan TOPSIS mampu memberikan rekomendasi pemilihan supplier secara objektif, sistematis, dan terukur.
Analisis Postur Kerja Analis Laboratorium dengan Metode RULA untuk Mengurangi Risiko MSDs Febri Gilang Arjuna; Uun Novalia Harahap; Yetti Meuthia Hasibuan; Haniza Haniza
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i3.312

Abstract

This study aims to analyze the working postures of laboratory analysts using the Rapid Upper Limb Assessment (RULA) method to identify the risk of Musculoskeletal Disorders (MSDs). Observations were conducted during primary laboratory activities to document body posture, joint angles, and work duration. The RULA assessment indicated moderate to high risk, suggesting the need for immediate corrective actions. Major contributing factors to MSD risk included bent working postures, repetitive arm movements, and non-ergonomic workstation design. Recommended improvements involve workstation adjustment, posture correction, and the application of ergonomic principles. This study is expected to support MSD prevention efforts and improve comfort and productivity among laboratory analysts.
Studi Eksperimental Kalor Biodiesel dari Minyak Goreng Limbah Kiki Syahbana Sembiring; Muhammad Idris; Yetti Meuthia Hasibuan; Uun Novalia Harahap; Darianto Darianto
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.160

Abstract

The ever-increasing global energy demand necessitates the development of environmentally friendly and sustainable alternative fuels. Biodiesel is a potential solution, mainly when produced from used cooking oil through the transesterification process. This study aims to evaluate the effect of reaction time on the calorific value of biodiesel using the linear regression method. The calorific value was chosen as the primary parameter because it reflects the energy produced by the fuel. The study analyzed experimental data correlating the transesterification reaction time with the biodiesel calorific value. The results showed that the optimal reaction time was 80 minutes, yielding the highest calorific value of 41.35 MJ/kg, exceeding the ASTM D6751 standard. However, the effect of reaction time on calorific value was not statistically significant, with a P-value of 0.67 and a regression coefficient of 0.02. The decrease in calorific value after 80 minutes is likely caused by overreaction, reducing efficiency. The findings indicate that reaction time is not the sole factor influencing biodiesel calorific value. Future research recommendations include incorporating variables such as reaction temperature and raw material molar ratio to enhance model accuracy. This study is expected to provide a foundation for developing high-quality biodiesel that meets international standards.
Co-Authors Abdud Azis Syarif Abdul Azis Syarif Abdul Aziz Syarif Abdul Aziz Syarif Ade Rae Salomo Adi Prasatya Agung Al Balad Alda Febriansyah Chaniago Andri Sitorus Anggi Muhaimin Ardilla Ardilla Arma Dani Audrey Iva Novia Sihombing Bagas Sriwanto Bobby Umroh Budhi Santri Kusuma Darianto Darianto Denny Walady Utama Deny Satria Diah Elliza Carolina Hutabarat Dimas Pramana Putraa Dirjo Silaban Eddy Eddy Febri Gilang Arjuna Hadad Alwi Hakim Hasibuan Haniza Harahap, Uun Novalia Hendri Putra Jaya Gulo Ilham Wahyudi Indra Hermawan Iswandi Iswandi Izzat Fadil Maulana Jaka Tri Hadiyatna Jaka Tri Hadiyatna Jekson Priadi Pasaribu Jumadi Suratman Khairul Amri Kiki Syahbana Sembiring Luthfi Willyanda Putra M. Ade Kurniawan Mahliza Nasution Muhammad Bayu Taufan Muhammad Fahmi Affandi Muhammad Fazri Muhammad Idris Nismah Panjaitan Rafika Apriani Pratiwi Rafiqi Pratama Rahmat Wahyu Rahmawaty Rahul Ray Riana Puspita, Riana Rini Halila Nasution Riska Amelia Romadon, Muhammad Sebayang Rihat Sekar Ayu Ony Ningrum Silitonga, Putri Elita Siregar, Zufri Hasrudy Sumardi Juniawan Sinaga Suriandi Suriandi Surya Dharma Syarif, Abdul Azis Syita Nabila Tazkia Tarigan, Harri Pratama Tino Hermanto Tri Hadiyatna, Jaka Utama, Denny Wallady Uun Novalia Harahap Wan Krisman Hia Yusuf Fadillah Zaharuddin Zaharuddin Zaharuddin