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All Journal INDONESIAN JOURNAL OF APPLIED PHYSICS Go-Integratif : Jurnal Teknik Sistem dan Industri Journal of Industrial Engineering and Halal Industries
Afif Hakim
Universitas Buana Perjuangan Karawang
Religion Astronomy Control & Systems Engineering Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Physics

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DEVELOPMENT OF OPERATION PROCESS MAP AND ANALYSIS OF INVENTORY CONTROL BASED ON MATERIAL REQUIREMENT PLANNING IN ASSEMBLY LINE Annisa Indah Pratiwi; Afif Hakim; Ragil Yuli Santosa
Journal of Industrial Engineering and Halal Industries Vol. 1 No. 1 (2020): Journal of Industrial Engineering and Halal Industries (JIEHIS)
Publisher : Industrial Engineering Department, Faculty of Science and Engineering, UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/jiehis.1800

Abstract

 Production planning and control is a theory which discusses all the activities that take place in a production process which includes product planning, costs, production processes, scheduling, forecasting demand and many other products. Planning the amount of inventory that will be owned company is one of the problems often faced by companies. Especially when the inventory is one important factor that can support the company's production processes and help meet customer demand. For companies that have strategies make to stock, inventory can have a major impact on the pricing of the product or the company's finances. Appropriate inventory management can be one of the keys to minimize and optimize the company's costs to be incurred. Determination lot size in MRP is a complex and difficult problem. Lot size is defined as a quantity stated in the order acceptance and delivery of orders in the MRP. Decisions about the size of the lot and when production is very important because it involves the use of labor and equipment are economical. Based on observations there are 13 components which are arranged in the trolley assembly process and are divided into 4 work stations in the production process. After making a map process operations per each work station, the cycle time for 1800 seconds is obtained. Based on data analysis about inventory costs for each component, it can be seen that the calculation using the EOQ method is the method that produces the calculation results with the largest value of Rp. 111,000,500, - then for the L4L and POQ methods produce the calculation results that have the same value of Rp. 16,200,000. Then the decision taken is to choose the L4L method because with this technique can produce exactly how many raw materials needed.
Pengukuran Beban Kerja Mental di Bagian Perawatan di PT. XYZ Menggunakan Metode NASA-TLX Nana Rahdiana; Riski Arifin; Afif Hakim
Go-Integratif : Jurnal Teknik Sistem dan Industri Vol 2 No 01 (2021): Go-Integratif : Jurnal Teknik Sistem dan Industri
Publisher : Engineering Faculty at Universitas Singaperbangsa Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35261/gijtsi.v2i01.5076

Abstract

Dalam persaingan industri sekarang ini, tidak sedikit perusahaan yang menggunakan pola produksi berkelanjutan dengan bekerja selama 24 jam untuk memenuhi kebutuhan pasar. Agar proses produksi tidak mengalami masalah, diperlukan perawatan yang teratur terhadap mesin produksi. PT XYZ memiliki bagian perawatan yang dibagi menjadi tiga subbagian, yaitu Mekanik, Elektrikal, dan Method. Hasil observasi menunjukkan adanya keluhan para pekerja di bagian perawatan yang harus bekerja dengan performa yang maksimal sehingga membuat beban kerja mental meningkat. Tujuan penelitian ini adalah mengukur beban kerja mental pada bagian perawatan PT XYZ. Metode yang digunakan dalam penelitian ini adalah NASA-TLX untuk mengukur beban kerja mental berdasarkan enam dimensi yaitu Mental, Fisik, Waktu, Kinerja, Usaha, dan Frustasi. Penelitian ini menunjukkan bahwa 73% pekerja masuk dalam kategori beban kerja mental “tinggi” dan 27% masuk dalam kategori beban kerja mental “sangat tinggi”. Hasil pengujian statistik menunjukkan tingkat signifikansi sebesar 0,369 yang berarti lebih besar dari P-value 0,05 dan dapat dinyatakan bahwa tidak ada perbedaan beban kerja mental di setiap subbagian perawatan.
Determining The Crystallite Size of TiO2/EG-Water XRD Data Using the Scherrer Equation Muhamad Taufik Ulhakim; Sukarman Sukarman; Khoirudin Khoirudin; Nazar Fazrin; Tomas Irfani; Afif Hakim
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 14, No 1 (2024): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v14i1.79195

Abstract

X-ray diffraction (XRD) data and the Scherrer equation were utilized to analyze the crystallite Size of titanium dioxide (TiO2) in a solution of ethylene glycol (EG) and distilled water. The XRD analysis was conducted using a Rigaku Miniflex 600 instrument with an X-ray wavelength of approximately 0.15046 nm. The examination yielded the full-width half maximum (FWHM), which was subsequently examined using the Scherrer equation. This experiment employed TiO2 with a purity level of 99.8% and a crystal Size of 30 nm. The analysis revealed that the average crystallite Size of TiO2 in the sample is 19.45 nm, with the highest measurement at about 30.38 nm. The Spearman correlation equation was employed to validate the outcomes. The Spearman's correlation coefficient between the FWHM variable and the crystallite Size of TiO2 nanoparticles is -0.958. These findings shed light on the crystal structure of TiO2 under these conditions. These findings lend support to the use of TiO2 in a variety of nanotechnology applications. However, more research is needed to understand fully how crystallite-Size TiO2 nanoparticles work in different settings and to find the best ways to prepare samples, including understanding the specific phase and how it affects the stability of fluids. This research contributes significantly to the understanding of the properties of TiO2 in a solution of distilled water and EG, as well as to the characterization of nanomaterials, with particular emphasis on issue 9 of the SDGS Goal concerning industry, innovation, and infrastructure.
Co-Authors Annisa Indah Pratiwi Khoirudin Khoirudin Muhamad Taufik Ulhakim Nana Rahdiana Nazar Fazrin Ragil Yuli Santosa Riski Arifin Sukarman Sukarman Tomas Irfani