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All Journal Jurnal Teknik Industri J@TI (TEKNIK INDUSTRI) Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Optimasi Sistem Industri Jurnal Ilmiah Teknik Industri PERFORMA : Media Ilmiah Teknik Industri Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Jurnal Ilmiah Teknik Industri SEMAR Prosiding Konferensi Nasional PKM-CSR Makara Journal of Technology Jurnal Pengabdian Masyarakat dan aplikasi Teknologi International Journal of Science, Technology and Applications
Wakhid Ahmad Jauhari
Industrial Engineering Department, Faculty Of Engineering, Universitas Sebelas Maret
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Nursing Physics Public Health Social Sciences Transportation Other

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MODEL PERSEDIAAN TERINTEGRASI PADA SISTEM SUPPLY CHAIN YANG MELIBATKAN PEMASOK, PEMANUFAKTUR DAN PEMBELI Jauhari, Wakhid Ahmad
Jurnal Ilmiah Teknik Industri Vol. 5, No. 2, Desember 2006
Publisher : Universitas Muhammadiyah Surakarta

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

Abstract

In this paper we consider a single buyer-single manufacturer- single supplier supply chain problem where there are multiple deliveries for one buyer’s order and the manufacturer produces in a multiple integer of deliveries quantity. We also consider a lot size of raw material procurement which can be split from production batch. From numerical example we found that a value of material conversion factor and delivery frequency influences the total inventory cost . A high value of material conversion factor would make the buyer’s total inventory cost increase and the manufacturer’s total inventory costdecrease. High frequency of delivery would make the buyer’s total inventory cost decrease and the manufacture’s total inventory cost increase.
Perbaikan Min-Max Distribusi Dengan Multiple Criteria ABC Analysis NG-Model Untuk Pengoptimalan List Part Number Hanif, Zulhendra; Hisjam, Muhammad; Jauhari, Wakhid Ahmad
Jurnal Ilmiah Teknik Industri Vol. 18, No. 1, Juni 2019
Publisher : Muhammadiyah University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/jiti.v18i1.7727

Abstract

PT GMF Aeroasia Tbk. is the largest MRO company in Indonesia. This company has 67 plants worldwide. With the many plants that must be serviced, the complex process of repairing aircraft with spare parts that exceeds 15,000 types. Part distribution is a very big challenge and must be faced by companies where part distribution is done with multi-stage warehouses. At present the main warehouse has problems with the inefficiency of the min-max distribution system at each plant where the system aims to bond the parts that have the greatest frequency of demand to the sub-warehouse at the plant. This study discusses the improvement of Min-Max distribution with ABC Analysis NG-Model Multiple Criteria which aims to improve the efficiency of the list part number with the frequency of order transfer requests and the most optimal performance at 9 internal plants with the largest part demand activity. The proposed method is known to be able to increase min-max accommodation including, Transfer Order frequency from 23% to 40.80% and weekly delivery performance from 22% to 62.69%. In addition, this method can also reduce the amount of part number on Min-max with the results of Transfer Order accommodation and increased performance from the methods currently used.
MODEL PERSEDIAAN TERINTEGRASI PADA SISTEM SUPPLY CHAIN YANG MELIBATKAN PEMASOK, PEMANUFAKTUR DAN PEMBELI Jauhari, Wakhid Ahmad
Jurnal Ilmiah Teknik Industri Vol. 5, No. 2, Desember 2006
Publisher : Muhammadiyah University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/jiti.v5i2.1569

Abstract

In this paper we consider a single buyer-single manufacturer- single supplier supply chain problem where there are multiple deliveries for one buyer?s order and the manufacturer produces in a multiple integer of deliveries quantity. We also consider a lot size of raw material procurement which can be split from production batch. From numerical example we found that a value of material conversion factor and delivery frequency influences the total inventory cost . A high value of material conversion factor would make the buyer?s total inventory cost increase and the manufacturer?s total inventory costdecrease. High frequency of delivery would make the buyer?s total inventory cost decrease and the manufacture?s total inventory cost increase.
Model Persediaan Pemasok-Pembeli Dengan Produk Cacat Dan Kecepatan Produksi Terkontrol. Sejati, Nelita Putri; Jauhari, Wakhid Ahmad; Rosyidi, Cucuk Nur
Jurnal Teknik Industri Vol 15, No 2 (2014): Agustus
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (438.345 KB) | DOI: 10.22219/JTIUMM.Vol15.No2.103-111

Abstract

In this paper, we consider a joint economic lot size (JELS) model consisting of single vendor single buyerwith single product. We intend to study the impact of defective items and controllable production rate onthe model. The demand in buyer side is assumed to be stochastic. The delivery of lot from vendor to buyer is conducted under equal size shipment and the lead time is assumed to be constant. The defective items founded by the inspector in buyer side are carried in buyer’s storage until the next shipment and will be returned to the vendor. The goal of the proposed model is to determine optimal delivery frequency, review period and production rate by minimizing the joint total cost. A sensitivity analysis is performed to show the impact of the changes of the decision variables on model’s behavior. The result from the sensitivity analysis shows that the joint total cost is sensitive to the changes of defect rate, demand uncertainty and demand rate. 
PERBAIKAN PROSES PRODUKSI IKM XYZ BERDASARKAN KRITERIA CPPB-IRT, WISE, DAN SJH LPPOM MUI Suhardi, Bambang; Wardani, Serlita Vidinia; Jauhari, Wakhid Ahmad
J@ti Undip : Jurnal Teknik Industri Vol 14, No 2 (2019): Mei 2019
Publisher : Departemen Teknik Industri, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (409.658 KB) | DOI: 10.14710/jati.14.2.93-102

Abstract

Keamanan pangan merupakan hal penting yang perlu diperhatikan dalam maraknya perkembangan industri pangan di Indonesia. UU RI No. 12 Tahun 2012 mengamanatkan bahwa keamanan pangan dapat dijaga dengan memperhatikan program higiene dan sanitasi produksi serta perancangan sistem kerja dan K3 suatu industri. Keamanan pangan identik dengan kehalalan pangan karena kaidah halal adalah menjaga pangan dari kemungkinan cemaran yang membahayakan. Kewajiban bagi setiap produk yang masuk, beredar, dan diperdagangkan di wilayah Indonesia untuk bersertifikat halal tercantum pada pasal 4 Undang-Undang No. 33 Tahun 2014 tentang Jaminan Produk Halal (UU JPH). Penelitian ini bertujuan untuk mengidentifikasi kondisi keamanan dan kehalalan pangan pada proses produksi Industri Kecil Menengah (IKM) XYZ berdasarkan standar Cara Pengolahan Pangan yang Baik Industri Rumah Tangga (CPPB-IRT), Work Improvement in Small Enteprises (WISE), dan Sertifikasi Jaminan Halal (SJH) LPPOM MUI. Berdasarkan hasil identifikasi, diketahui bahwa terdapat 18 ketidaksesuaian CPPB-IRT, 10 ketidaksesuaian WISE, dan 9 ketidaksesuaian SJH LPPOM MUI pada proses produksi IKM XYZ. Berdasarkan diskusi yang telah dilakukan, disimpulkan bahwa ketidaksesuaian yang menjadi fokus perbaikan dapat dikelompokan dalam 1 kategori utama, yaitu kategori Program Higiene dan Sanitasi IKM sehingga usulan perbaikan yang tepat diimplementasikan adalah penyusunan dokumen Sanitation Standard Operating Procedures (SSOP). Abstract[Improvement of IKM XYZ Production Process Based on the Regulations of CPPB-IRT, WISE, and SJH LPPOM MUI] Food Safety is an important thing to note in the middle of the development of the food industry in Indonesia. UU RI Number 12 of 2012 mandates that food safety can be maintained by paying attention to hygiene and sanitation programs, work system design, and also occupational safety and health in the production process of an industry. The thing that is closely related to food safety is halal practice. Halal is a guarantee of food safety because the implementation of halal means getting rid of things that are harmful to humanity and the environment. The obligation for every product that entered, circulated, and traded in Indonesian territory for halal certification are listed in Article 4 of UU RI Number 33 of 2014 concerning Guaranteed Halal Products. This study aims to identify the condition of food safety and halal practice in IKM XYZ based on the regulations of Cara Produksi Pangan yang Baik Industri Rumah Tangga (CPPB-IRT), Work Improvement in Small Enterprises (WISE), and Halal Assurance Certification of LPPOM MUI, and also to compile improvement proposal based on the identification results. The identification results show that in the IKM XYZ production process, there are 18 elements that not following CPPB-IRT regulations, 10 elements that are not following WISE regulations, and 9 elements that are not following Halal Assurance Certification of LPPOM MUI. Based on the results of discussion that have been carried out with the owner and the supervisor of IKM XYZ, elements that are being the focus of improvement can be grouped into 1 main category, that is Program Hygiene dan Sanitasi IKM. So, the improvement proposal that fits is the documentation of Sanitation Standard Operating Procedures (SSOP).Keywords: CPPB-IRT; food safety; IKM, SJH LPPOM MUI; WISE
MODEL PEMILIHAN PROSES UNTUK MEMINIMALKAN BIAYA MANUFAKTUR, KERUGIAN KUALITAS, DAN KETERLAMBATAN PENGIRIMAN Fatmawati, Ani; Rosyidi, Cucuk Nur; Jauhari, Wakhid Ahmad
Jurnal Teknik Industri Vol 13, No 2 (2012): Agustus
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (228.21 KB) | DOI: 10.22219/JTIUMM.Vol13.No2.109-115

Abstract

There are three aspects of competitive strategy that can be applied by manufacturing companies: quality, cost, anddelivery time. Actually, it is hard to produce high quality poducts in low manufacturing cost and on time delivery. Hence, a process selection is needed to integrated the three aspects above in order to meet a customer requirement. This research develops a process selection model to minimize manufacturing cost, quality loss cost, and lateness cost considering component spesification, delivery time, production capacity, and customer order. A numerical example is given to show the application of the model using an assembly product that consists of three components. Three machines are used to produce all of the components. Each machine has different characteristic in manufacturing cost, tolerances, and processing time. Total cost that used to produce 100 unit assembly product is Rp5.390.970,00.
Model Pemilihan Proses untuk Meminimalkan Biaya Manufaktur, Kerugian Kualitas, dan Keterlambatan Pengiriman Ani Fatmawati; Cucuk Nur Rosyidi; Wakhid Ahmad Jauhari
Jurnal Teknik Industri Vol. 13 No. 2 (2012): Agustus
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/JTIUMM.Vol13.No2.109-115

Abstract

There are three aspects of competitive strategy that can be applied by manufacturing companies: quality, cost, anddelivery time. Actually, it is hard to produce high quality poducts in low manufacturing cost and on time delivery. Hence, a process selection is needed to integrated the three aspects above in order to meet a customer requirement. This research develops a process selection model to minimize manufacturing cost, quality loss cost, and lateness cost considering component spesification, delivery time, production capacity, and customer order. A numerical example is given to show the application of the model using an assembly product that consists of three components. Three machines are used to produce all of the components. Each machine has different characteristic in manufacturing cost, tolerances, and processing time. Total cost that used to produce 100 unit assembly product is Rp5.390.970,00.
Model Persediaan Pemasok-Pembeli Dengan Produk Cacat Dan Kecepatan Produksi Terkontrol. Nelita Putri Sejati; Wakhid Ahmad Jauhari; Cucuk Nur Rosyidi
Jurnal Teknik Industri Vol. 15 No. 2 (2014): Agustus
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/JTIUMM.Vol15.No2.103-111

Abstract

In this paper, we consider a joint economic lot size (JELS) model consisting of single vendor single buyerwith single product. We intend to study the impact of defective items and controllable production rate onthe model. The demand in buyer side is assumed to be stochastic. The delivery of lot from vendor to buyer is conducted under equal size shipment and the lead time is assumed to be constant. The defective items founded by the inspector in buyer side are carried in buyer’s storage until the next shipment and will be returned to the vendor. The goal of the proposed model is to determine optimal delivery frequency, review period and production rate by minimizing the joint total cost. A sensitivity analysis is performed to show the impact of the changes of the decision variables on model’s behavior. The result from the sensitivity analysis shows that the joint total cost is sensitive to the changes of defect rate, demand uncertainty and demand rate. 
ANALISIS POSTUR KERJA MANUAL TASK MENGGUNAKAN METODE VISUAL MANAGEMENT (STUDI KASUS: PRODUSEN DANDANG) Galuh Qodrina; Irwan Iftadi; Wakhid Ahmad Jauhari
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2017): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 8 2017
Publisher : Prosiding SNST Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (325.023 KB)

Abstract

Kegiatan produksi tidak lepas dari aktivitas fisik manusia yang berupa manual task atau penanganan manual. Hal tersebut menimbulkan Musculoskeletal Disorders (MSDs) yang dapat diminimalkan dengan mengatu sikap kerja sehingga gerakan tidak alamiah berkurang dan meningkatkan produktifitas. Tujuan dari penelitian ini yaitu menganalisis postur kerja operator berbahaya dan mengusulkan perbaikan. Penelitian ini dilakukan di produsen dandang di Semanggi, Surakarta dengan menggunakan metode Visual Management yang meneliti postur kerja operator saat bekerja dengan menilai 14 domain ergonomi pada masing-masing elemen operasi. Penilaian dilakukan dengan memberikan skor pada masing-masing domain ergonomi sesuai dengan level tingkat kekritisan kemudian diperoleh nilai PES (Partial Ergonomic Score) sehingga bila dikalkulasi dengan jumlah elemen operasi dan jumlah domain yang digunakan maka diperoleh nilai OES (Overall Ergonomic Score) sebagai hasil akhir. Dari hasil observasi, terdapat 18 proses dari 7 stasiun dengan 177 elemen operasi yang diamati. Sembilan proses diantaranya memiliki nilai OES antara 0,5 hingga 0,7 memerlukan investigasi dan perubahan segera. Proses pembuatan pola pada stasiun pemolaan memiliki nilai OES tertinggi dengan 2 dari 4 elemen operasinya memiliki nilai PES tertinggi sehingga perbaikan akan dilakukan pada kedua elemen operasi tersebut. Perbaikan dilakukan dengan mendesain standing desk yang dirancang khusus untuk operator sehingga dapat menurunkan level tingkat kekritisan.Kata kunci: Penanganan Manual, Visual Management, PES (Partial Ergonomic Score), OES (Overall Ergonomic Score) 
HIERARCHICAL TASK ANALYSIS (HTA) PENGEMUDI TAKSI KOSTI SOLO Carinda Adistiara; Irwan Iftadi; Wakhid Ahmad Jauhari
Prosiding SNST Fakultas Teknik Vol 1, No 1 (2018): PROSIDING SEMINAR NASIONAL SAINS DAN TEKNOLOGI 9 2018
Publisher : Prosiding SNST Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (206.714 KB)

Abstract

Tidak dapat dipungkiri dalam menjalankan aktivitas sehari-hari diperlukan pendukung moda transportasi untuk memudahkan mobilitas. Seiring meningkatnya aktivitas masyarakat Indonesia, maka penggunaan moda transportasi juga meningkat. Adanya peningkatan jumlah kendaraan yang ada di jalan tentunya berpengaruh terhadap permasalahan transportasi, salah satunya adalah peningkatan jumlah kecelakaan lalu lintas. Berdasarkan data peningkatan jumlah kecelakaan dan kerugian materi Badan Pusat Statistik, jumlah kecelakaan yang terjadi meningkat sebesar 1.000.000 dengan kerugian materi sebesar Rp 250.000.000.000,- pada tahun 2004-2014. Penelitian ini bertujuan untuk menganalisis tugas pengemudi dengan memecah operasi-operasi tugas pengemudi menjadi sub-sub operasi sebagai landasan untuk mengetahui sumber gangguan apa saja yang dapat menganggu pengemudi selama mengemudi. Objek penelitian ini merupakan angkutan umum kategori taksi yang merupakan transportasi umum di Indonesia dengan jumlah terbesar, yaitu 27.000 armada pada tahun 2013-2014. Penelitian ini terdiri dari empat langkah, yaitu studi lapangan, document review, wawancara stakeholder dan pembuatan Hierarchical Task Analysis (HTA). Hasil dari penelitian ini berupa diagram dekomposisi yang menampilkan struktur tugas secara spesifik, terbagi dalam bentuk diaram tabular maupun hirarki. Kata kunci : Hierarchical Task Analysis (HTA), Pengemudi Taksi, Taksi Kosti Solo.
Co-Authors Agarika Fatmasari Ahmad Faiz Haqqoni Akbar, Reza Rizkichani Alfan Zaldiansyah Andreas Wegiq Adia Hendix Ani Fatmawati Anindya Rachma Dwicahyani Antika Adzary Sekar Fadlilah Aqshal Raffa Sandito Ayu Sally Damayanti Azizah Aisyati Azizah Aisyati Bambang suhardi Bambang Suhardi Budiningsih, Endah Carinda Adistiara CUCUK NUR ROSYIDI D. A. Mardhikawarih Dedi Triyanto Dwicahyani, Anindya Rachma Eko Liquiddanu Eko Liquiddanu Eko Pujiyanto Eko Pujiyanto Enty Nur Hayati Era Febriana Aqidawati Fatmawati, Ani Ferdinanda Pascha Hasian Fransisca Indraningsih Kasy Galuh Qodrina Hanif, Zulhendra Hansen Kusuma Hary Purwoko Atmojo Sung Sumargo Hikmah Fadilla, Ryan Hisjam, Muhammad I Gusti Ngurah Antaryama I Nyoman Pujawan I Wayan Suletra Ikhsan Aditama Indah Saputri Irwan Iftadi Irwan Iftadi Irwan Iftadi Irwan Iftadi Kurnia Akbar, Agus Lobes Herdiman Muhammad Hafidz Fazli Bin Md Fauadi Muhammad Hisjam Mulyaningtyas, Dwiningsih Munifah - Naganingrum, R. Pitaloka Nelita Putri Sejati NIdya Yutie Pramesti Nugraheni, Eka Agustina Nugroho, Beny Pringgo Widyo Laksono Pringgo Widyo Laksono Pujiyanto, Eko Rahmaniyah Dwi Astuti Retno Wulan Damayanti Retno Wulan Damayanti Reza Rizkichani Akbar Safira Nariswari Sejati, Nelita Putri Shabrina Chairunnisaa Novia Ramadhany Stefanus Eko Wiratno Syed Ahmad Helmi Syed Hassan Wardani, Serlita Vidinia Yaning Tri Hapsari Yoshan Ardhi Pratama Yusuf Priyandari Yusuf Priyandari Zulhendra Hanif