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Dwi Nurul Izzhati
Program Studi Teknik Industri Fakultas Teknik UDINUS Jl. Nakula I, No.5- 11, Semarang
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Other

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Pemodelan dan Analisa Produktivitas Proses Pembekuan Produk Fillet Ikan Menggunakan Objective Matrix (OMAX) (Studi Kasus PT. Mandala Mulya Sakti Surabaya) Kurniawan, Christian; Tjahyono, Rudy; Izzhati, Dwi Nurul
Applied Industrial Engineering Journal Vol. 1 No. 1 (2017)
Publisher : Universitas Dian Nuswantoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (455.97 KB) | DOI: 10.33633/aiej.v1i1.1726

Abstract

Way in increasing the value of productivity in manufacturing and service companies are usually always faced with many constraints factors such as human, machine, material, information or energy. PT. Mandala Mulya Sakti Surabaya is one example of a fish processing manufacturing company experiencing problems related to productivity decline. The decrease of productivity occurred in July 2016 where the freezing unit of dori fish fillet with significant value so that handling effort is needed. This research uses Objective Matrix (OMAX) as an effort to evaluate the value of productivity by modeling and analyzing the productivity of freezing process of dori fish product, then the result of scientific analysis will be used as benchmark of productivity improvement in the future. Technical rather than the use of OMAX is to determine the criteria ratios, search data using questionnaires and utilize AHP methods to determine the weight, followed by the calculation of ratios and the determination of the value boundary, then the final stage is the creation of OMAX table to calculate the value of productivity. The results of this study indicate that the lowest productivity value occurred in July of 2016 of 5.08 and the highest in April 2017 amounted to 468.12. These results can be a reference in future productivity improvements
MEREDUKSI CACAT BOTOL PLASTIK DENGAN PENDEKATAN SIX SIGMA DAN FUZZY Nurrakhman, Fahmi Indra; Izzhati, Dwi Nurul; Tjahyono, Rudi
Applied Industrial Engineering Journal Vol. 3 No. 2 (2019)
Publisher : Universitas Dian Nuswantoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33633/aiej.v3i2.4606

Abstract

AkstrakCV Jordan Plastik  adalah perusahan plastik yang berada di Semarang. Produk yang dihasilkan  diantaranya adalah botol plastik PET. Perusahaan menargetkan  maksimal produk cacat rata-rata 2% perbulan, namun realisasinya ada kenaikan produk cacat pada periode Oktober 2018 sampai Maret 2019 menjadi 4,69%. Untuk mengendalikan permasalahan ini dan mereduksi produk cacat, peneliti menggunakan pendekatan Metode Six Sigma.Tahapan dari metode Six Sigma meliputi Define,  Measure,  Analyze,  Improve  dan  Control.  Pada  penelitian  ini  tidak  membahas  pada tahapan control hanya sampai tahap Improve. Pada tahap Define diketahui jenis cacatnya botol PET yaitu bocor, body menggumpal, drop test, garis motong, goyang, kepala cembung, kotor oli, leher  miring,  ring  penyok,  selip,  semu  gosong,  semu  putih,  stretch  miring,  dan  tebal  tipis    dan penyebab  cacat  dominan  adalah  suhu  mesin  preform  berubah-ubah.Tahap  Measure,    DPMO selama periode Oktober 2018 sampai Maret 2019 sebesar 46.912 pcs dengan nilai sigma 3,18. Tahap Analyze, analisis faktor yang menyebabkan cacat pada tiga jenis cacat tertinggi yaitu ring penyok, semu putih dan goyang. Pada tahap Improve dilakukan penstabilan suhu mesin pemanas preform dengan metode logika fuzzy pada suhu 58 Celcius. Kata Kunci : PET, Six Sigma, Pengendalian Kualitas, DMAIC, Fuzzy  
Strategi untuk Meningkatkan Capaian Target Produksi Departemen Finishing dengan Metode 8 Waste di PT. XYZ Ferdiansyah, Vicky; Izzhati, Dwi Nurul
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 8 No. 2 (2025): April
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v8i2.44540

Abstract

PT XYZ faces the problem of not achieving production targets in five departments, especially in the Finishing Department with an achievement of only 54%. This study aims to identify the most dominant waste and provide suggestions for improvement. The methods used include interviews and giving 8 waste questionnaires to five respondents. Then, the most dominant type of waste was determined using a Pareto diagram. After that, root cause analysis was conducted using the 5 Whys method and suggestions for improvement were given. The results show that the dominant type of waste is waiting, caused by waiting for materials as needed, process queues due to the limited number of workers, and difficulty finding materials in an unorganized work area. The proposed improvements include improving communication with suppliers regarding material specifications, improving labor schedules and providing counseling and training on the application of the 5 S/R culture. With these proposed improvements, it is expected to increase the achievement of production targets in the Finishing department of PT XYZ.
Co-Authors ,, Jazuli Amalia Amalia Amalia Amalia Ary Putra Prasetia Bowo Nurhadiyono Dewa Kusuma Wijaya Dhieka Anendra Dita Ayu Mayasari, Dita Ayu Dwi Eko Waluyo Eko Hartini Hanna Lestari Hartono, B.J Ridwan Hasan Mastrisiswadi Hasan Mastrisiswadi Hasan Mastrisiswadi Helmy Rahadian Helmy Rahadian Hernanti, Sania Bunga Pradani J. Jazuli Jazuli . Jazuli, J. Jazuli, Jazuli Juli Ratnawati Kurniawan, Christian Nurrakhman, Fahmi Indra Prasetia, Ary Putra Rahadian, Helmy Retno Indah Hernawati Rokhmah, Nelli Rudy Tjahyono, Rudy Sari Ayu Wulandari Tita Talitha Tita Talitha Tjahyono, Rudi Vicky Ferdiansyah, Vicky Yuli Setyaningsih Yuniarsi Rahayu Yuniarsi Rahayu Yuniarsi Rahayu Yusron, Mohammad Aunun