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All Journal Jurnal Ergonomi Indonesia (The Indonesian Journal of Ergonomic) Jurnal Rekayasa Sistem Industri OPSI Journal of Engineering and Management in Industrial System JISI UMJ (Jurnal Integrasi Sistem Industri UMJ) Techno (Jurnal Fakultas Teknik, Universitas Muhammadiyah Purwokerto) Tekinfo | Scientific Journal of Industrial and Information Engineering SEMAR (Jurnal Ilmu Pengetahuan, Teknologi, dan Seni bagi Masyarakat) Jurnal Aplikasi Ilmu Teknik Industri (JAPTI) Techno Prosiding University Research Colloquium SAINTEK
Adhie Tri Wahyudi
Program Studi S1 Teknik Industri, Universitas Setia Budi Jl. Letjen. Sutoyo, Mojosongo, Surakarta 57127
Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Public Health Social Sciences

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AHP-SAW and AHP-WP Sensitivity Test in DSS Design for Housing Location Selection Adhie Tri Wahyudi; Erni Suparti; Resmitha Dian Waruju
Jurnal Aplikasi Ilmu Teknik Industri (JAPTI) Vol 3, No 1 (2022)
Publisher : Universitas Veteran Bangun Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/japti.v3i1.2214

Abstract

The Decision Support System (DSS) is implemented by CV. IKS assists the director as a Decision Maker in determining the location of housing developments. In the case of determining the location of the subsidized housing project that was carried out in 2020, the DSS developed with two methods, namely DSS1 with the AHP – WP method and DSS2 with the AHP – SAW method, gives different outputs. The purpose of this paper is to conduct a sensitivity test to determine the MADM method most suitable for completing the locating determination of subsidized housing projects in CV. IKS. The sensitivity test method was chosen because this method can detect every ranking change in each MADM method. The more sensitive the value obtained from the change in ranking suggests the MADM method is the best in displaying the order of the ranked alternatives. It can be seen from the sensitivity test results that the change value of the AHP-WP method is 3.178%, and the change value of the AHP-SAW method is -19.274%. It concluded that the AHP-WP method was considered to be the most relevant in addressing the problem of determining the location of housing developments in the CV. IKS.Keywords: sensitivity test, MADM, AHP-SAW method, AHP-WP method, housing location determination
A MODIFICATION OF TIBREWALA, PHILIPPE, AND BROWNE'S ALGORITHM FOR MULTI-SHIFT MANUFACTURING WORKERS SCHEDULING Wahyudi, Adhie Tri; Zendrato, Rosleini Ria Putri; Indrasari, Anita; Suparti, Erni; Prayuda, Fendi; Cahyawati, Amanda Nur
JEMIS (Journal of Engineering & Management in Industrial System) Vol 12, No 1 (2024)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

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

Abstract

The SME under study, which specializes in hard wooden and leather furniture for foreign markets, encountered difficulties in integrating their make-to-order production system with tight shipping export deadlines. This necessitated a systematic worker scheduling technique in order to satisfy production targets and reduce labor expenditures. The aim of this research was to design a worker scheduling system to ensure that the production makespan corresponded to the available time limitations. The study found that the Tibrewala, Philippe, and Browne algorithm for multi-shift workers scheduling significantly reduced labor costs while ensuring order fulfillment within predefined constraints, emphasizing the need for additional research that includes all production cost variables for more comprehensive cost savings.
Total ergonomics approach to analyze work system and propose improvements for increasing worker productivity Suparti, Erni; Wahyudi, Adhie Tri; Fitrianingsih, Ana
OPSI Vol 16, No 2 (2023): ISSN 1693-2102
Publisher : Jurusan Teknik Industri Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v16i2.9009

Abstract

UD. TGM is one of SMEs located in Blora, Central of Java. They can produce 60 – 150 pallets of paving block per hour. Based on observations and measurements, the noise level around production machines is above 90 dB and the temperature around UD. TGM reaches 34°C. Those conditions do not match with the regulatory standards by Ministry of Health of Republic Indonesia. In addition, based on NBM questionnaire, there were 10 complaints of very sick, 7 complaints of pain, and 7 complaints of moderate pain. The worker's cardiovascular load was 36.4% (or needed improvement). Based on the REBA assessment informed that a corrective action needs to be taken immediately. This study aims to analyze the work system totally and provide improvement recommendations. We proposed recommendations by total ergonomics approach collaborated with fishbone diagrams, tree diagrams, and PDPC diagrams. The recommendations were UD. TGM need to create a supervisory team, create work instructions, design additional of transportation tools like a hand stacker, replace dirt floors with paving, enlarge air ventilation holes and add roof height. Then, the evaluation of the recommendations by Catia software, the REBA score was reduced from level 3 to level 1 (or low risk).
AHP-SAW and AHP-WP Sensitivity Test in DSS Design For Housing Location Selection Wahyudi, Adhie Tri; Suparti, Erni; Waruju, Resmitha Dian
Jurnal Aplikasi Ilmu Teknik Industri (JAPTI) Vol. 3 No. 1 (2022)
Publisher : Universitas Veteran Bangun Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/japti.v3i1.2214

Abstract

The Decision Support System (DSS) is implemented by CV. IKS assists the director as a Decision Maker in determining the location of housing developments. In the case of determining the location of the subsidized housing project that was carried out in 2020, the DSS developed with two methods, namely DSS1 with the AHP – WP method and DSS2 with the AHP – SAW method, gives different outputs. The purpose of this paper is to conduct a sensitivity test to determine the MADM method most suitable for completing the locating determination of subsidized housing projects in CV. IKS. The sensitivity test method was chosen because this method can detect every ranking change in each MADM method. The more sensitive the value obtained from the change in ranking suggests the MADM method is the best in displaying the order of the ranked alternatives. It can be seen from the sensitivity test results that the change value of the AHP-WP method is 3.178%, and the change value of the AHP-SAW method is -19.274%. It concluded that the AHP-WP method was considered to be the most relevant in addressing the problem of determining the location of housing developments in the CV. IKS.Keywords: sensitivity test, MADM, AHP-SAW method, AHP-WP method, housing location determination
Potensi Gangguan Muskuloskeletal Buruh Gendong di Pasar Legi Suparti, Erni; Wahyudi, Adhie Tri; Zendrato, Rosleini Ria Putri; Perkasa, Kevin Fajar
Jurnal Ergonomi Indonesia (The Indonesian Journal of Ergonomic) Vol 8 No 2 (2022): Volume 8 No 2 Tahun 2022
Publisher : Program Studi Magister Ergonomi Fisiologi Kerja Pascasarjana Universitas Udayana Denpasar Bekerjasama dengan Perhimpunan Ergonomi Indonesia (PEI)

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Abstract

The people in Surakarta are still going to the traditional market. Even though the modern markets are starting to appear such as supermarkets, hypermarts, or malls. One of the traditional markets that is classified as class 1 in the city of Solo is Legi Market. Legi Market which is located at Jalan S. Parman No. 19 Setabelan, Banjarsari is the main market in the city of Solo. “Buruh Gendong” is a person who help others to carry the goods. “Buruh Gendong” have an important role in Legi Market. They bring goods from outside to be brought inside market or they bring goods from buyers to be taken outside to the parking area. There are around 200 “Buruh Gendong” in Legi Market, with an average age of over 40 years old. The weight of the load is aproximately 30 kg to 100 kg. The distance from inside to outside is about 50 meters. Almost Buruh Gendong do not aware with the impact of their duty to the skeletal system,called Musculoskeletal Disorders (MsDs). Mapping the potential for MSDs is very helpful for the government for reducing the incidence of skeletal muscle injury. This study will discuss how to overcome MsDs. Keywords: Musculoskeletal Disorders, Buruh Gendong of Legi Traditional Market, Recommended Weight Limit
Studi Penentuan Jumlah Produksi Botol Kemasan Minuman Yang Optimal Dengan Fuzzy Time Series Markov Chain Dan Fuzzy Inference System Wahyudi, Adhie Tri; Giyanti, Ida; Kritiana, Bernadhetta Vivi
JISI: Jurnal Integrasi Sistem Industri Vol 10, No 2 (2023): JISI UMJ
Publisher : Fakultas teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jisi.10.2.99-110

Abstract

Perusahaan perlu berhati-hati saat menentukan jumlah produksi botol minuman kemasan. Jumlah persediaan bahan baku dan permintaan menjadi faktor penting dalam menentukan jumlah produksi. Ketidakpastian jumlah permintaan produk minuman mengakibatkan jumlah produksi botol kemasan minuman kurang selaras dengan jumlah persediaan bahan baku minuman dan jumlah permintaan produksi botol kemasan. Adanya faktor ketidakpastian jumlah permintaan menjadikan pentingnya pemilihan metode peramalan yang tepat untuk memprediksi jumlah permintaan berdasarkan data historis. Penelitian ini bertujuan melakukan studi penentuan jumlah produksi botol kemasan minuman yang optimal dengan mempertimbangkan faktor ketidakpastian. Metode Fuzzy Time Series Markov Chain (FTSMC) adalah satu salah metode peramalan berbasis time series dan dapat diterapkan pada permasalahan ketidakpastian peramalan yang terjadi. Hasil peramalan, setelah melalui uji verifikasi menjadi input metode Fuzzy Inference System (FIS) untuk menentukan jumlah produksi botol minuman agar bersesuaian dengan jumlah permintaan dan jumlah bahan baku. Model FIS yang dibangun pada penelitian ini adalah Fuzzy Sugeno dan Fuzzy Mamdani. Untuk mengetahui metode yang memberikan hasil yang optimal pada permasalahan ini, kedua model yang dibangun tersebut dianalisis dengan membandingkan nilai Mean Absolute Percentage Error (MAPE). Hasil penelitian menunjukkan bahwa kedua model, yatu model FTSMC Fuzzy Mamdani dan model FTSMC Fuzzy Sugeno mampu memberikan solusi optimal.
A MODIFICATION OF TIBREWALA, PHILIPPE, AND BROWNE'S ALGORITHM FOR MULTI-SHIFT MANUFACTURING WORKERS SCHEDULING Wahyudi, Adhie Tri; Zendrato, Rosleini Ria Putri; Indrasari, Anita; Suparti, Erni; Prayuda, Fendi; Cahyawati, Amanda Nur
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 12 No. 1 (2024)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

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

Abstract

The SME under study, which specializes in hard wooden and leather furniture for foreign markets, encountered difficulties in integrating their make-to-order production system with tight shipping export deadlines. This necessitated a systematic worker scheduling technique in order to satisfy production targets and reduce labor expenditures. The aim of this research was to design a worker scheduling system to ensure that the production makespan corresponded to the available time limitations. The study found that the Tibrewala, Philippe, and Browne algorithm for multi-shift workers scheduling significantly reduced labor costs while ensuring order fulfillment within predefined constraints, emphasizing the need for additional research that includes all production cost variables for more comprehensive cost savings.
Introduksi Pengolahan Sampah Sachet Minuman Instan Wahyudi, Adhie Tri; Indrasari, Anita; Wicaksana, Bagus Ismail Adhi
Prosiding University Research Colloquium Proceeding of The 7th University Research Colloquium 2018: Bidang Teknik dan Rekayasa
Publisher : Konsorsium Lembaga Penelitian dan Pengabdian kepada Masyarakat Perguruan Tinggi Muhammadiyah 'Aisyiyah (PTMA) Koordinator Wilayah Jawa Tengah - DIY

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Abstract

Tujuan pelaksanaan program Pengabdian Kepada Masyarakat ini adalah untuk membantu menyelesaikan permasalahan di bidang penanganan sampah. Koperasi Bina Usaha Mandiri (BUM) beserta masyarakat desa Sambirejo, Banjarsari yang menjadi mitra pelak- sanaan program ini, merupakan UKM yang menekuni kegiatan pengumpulan dan pengelolaan sampah. Diantara kegiatan UKM untuk mengumpulkan dan menjual kembali sampah plastik, ada yang tidak laku terjual kembali, salah satunya adalah bungkus sachet minuman instan yang memiliki lapisan aluminium dibagian dalamnya. Terinspirasi inovasi Bank Indonesia dalam mengolah sampah uang kertas menjadi produk akrilik, program Pengabdian Kepada Masya- rakat ini berupaya melakukan inovasi mengubah bekas minuman sachet menjadi sebuah papan alternatif. Metode pelaksanaan kegiatan ini adalah melakukan deformasi sampah plastic menjadi mocaf, melakukan proses hotpress pada mocaf dengan suhu tinggi. Pada kegiatan ini tim abdimas membantu Koperasi BUM dengan introduksi teknologi hotpress machine untuk mengolah sampah bekas minuman sachet menjadi sebuah papan alternatif. Hotpress machine dengan tenaga tekan hidrolik dilengkapi dengan kompor sembur untuk memanaskan molding. Kombinasi panas dan tekanan hidrolik pada plat molding membuat cacahan sachet minuman instan meleleh dan memadat. Hasilnya, diperoleh sebuah prototype papan alternatif. Berdasarkan proses ujicoba yang dilakukan dilokasi mitra, papan dengan kualitas paling baik adalah yang bahan bakunya berasal dari satu jenis produk, bukan campuran. Papan alternatif ini cukup mendapat perhatian pengunjung ketika pameran produk inovatif di Surabaya. Diharapkan papan alternatif ini bisa berkembang menjadi lebih industriable, lebih marketable dan memberikan kontribusi ekonomi bagi kesejahteraan anggota koperasi.
Strategi Pengendalian Produk Cacat di Industri Penyamakan Kulit melalui Pendekatan DMAIC Six Sigma Anandhita Perwitasari; Adhie Tri Wahyudi; Wahyu Widhiarso
Prosiding Sains dan Teknologi Vol. 4 No. 1 (2025): Seminar Nasional Sains dan Teknologi (SAINTEK) ke 4 - Februari 2025
Publisher : DPPM Universitas Pelita Bangsa

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Abstract

Penelitian ini bertujuan untuk mengidentifikasi dan mengurangi cacat pada proses finishing di CV XYZ, perusahaan penyamakan kulit sapi dan domba yang berlokasi di Garut, Jawa Barat. Observasi awal menunjukkan nilai sigma sebesar 3,6, dengan cacat dominan berupa Loose (30,01%), Cracking (25,02%), dan Snai (19,99%). Level sigma ini menunjukkan perlunya peningkatan kualitas untuk mencapai standar nasional dan internasional, termasuk standar kualitas USA. Pendekatan Six Sigma DMAIC diterapkan dengan berbagai alat analisis, seperti Pareto Chart dan Fishbone Diagram, untuk mengidentifikasi akar penyebab cacat yang meliputi faktor manusia (kurangnya pelatihan), metode (prosedur kerja tidak standar), material (kualitas bahan rendah), mesin (tekanan tidak stabil), dan lingkungan (suhu serta kelembapan tidak terkontrol). Pada tahap Improve, Failure Mode and Effects Analysis (FMEA), Interrelationship Diagram, dan Affinity Diagram digunakan untuk merumuskan strategi perbaikan. Rekomendasi meliputi pelatihan pekerja, standarisasi prosedur kerja, perawatan mesin, serta pengendalian suhu dan kelembapan lingkungan. Implementasi strategi ini diharapkan dapat meningkatkan kualitas produk kulit nasional yang memenuhi standar internasional, sehingga mampu bersaing di pasar global.
Total ergonomics approach to analyze work system and propose improvements for increasing worker productivity Suparti, Erni; Wahyudi, Adhie Tri; Fitrianingsih, Ana
OPSI Vol 16 No 2 (2023): ISSN 1693-2102
Publisher : Jurusan Teknik Industri, Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v16i2.9009

Abstract

UD. TGM is one of SMEs located in Blora, Central of Java. They can produce 60 – 150 pallets of paving block per hour. Based on observations and measurements, the noise level around production machines is above 90 dB and the temperature around UD. TGM reaches 34°C. Those conditions do not match with the regulatory standards by Ministry of Health of Republic Indonesia. In addition, based on NBM questionnaire, there were 10 complaints of very sick, 7 complaints of pain, and 7 complaints of moderate pain. The worker's cardiovascular load was 36.4% (or needed improvement). Based on the REBA assessment informed that a corrective action needs to be taken immediately. This study aims to analyze the work system totally and provide improvement recommendations. We proposed recommendations by total ergonomics approach collaborated with fishbone diagrams, tree diagrams, and PDPC diagrams. The recommendations were UD. TGM need to create a supervisory team, create work instructions, design additional of transportation tools like a hand stacker, replace dirt floors with paving, enlarge air ventilation holes and add roof height. Then, the evaluation of the recommendations by Catia software, the REBA score was reduced from level 3 to level 1 (or low risk).
Co-Authors Agnes Silvia Agung Setyawan Amanda Nur Cahyawati Anandhita Perwitasari Anita Indrasari Ari Muzakir Bagas Andi Wibowo Bagus Ismail Bagus Ismail Adhi Wicaksana Donny Wahyu Widodo Erni Suparti, Erni Fitrianingsih, Ana Giyanti, Ida Ida Giyanti Kritiana, Bernadhetta Vivi Kusmindari, Christofora Desi Langgeng Vodka Riyanto Maresta Andriani Onggo Saputro Perkasa, Kevin Fajar Pradana, Yon Prayuda, Fendi Resmitha Dian Waruju Rosleini Ria Putri Zendrato Saputro, Onggo Tri Putra Bangsawan Wahyu Widhiarso Waruju, Resmitha Dian Yon Pradana Yuli Dwi Astanti