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All Journal J@TI (TEKNIK INDUSTRI) JURNAL SISTEM INFORMASI BISNIS Industrial Engineering Online Journal Jurnal Simetris Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Teknik dan Manajemen Industri PERFORMA : Media Ilmiah Teknik Industri ComTech: Computer, Mathematics and Engineering Applications Journal of Engineering and Applied Technology
Nia Budi Puspitasari
Industrial Engineering Departement Diponegoro University Jl. Prof. Sudarto, SH Tembalang Semarang 50239 Telp. 0247460052
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mathematics Mechanical Engineering

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PERHITUNGAN STANDARD TIME MENGGUNAKAN METODE STOPWATCH TIME STUDY PADA SISTEM PRODUKSI JUST IN TIME (JIT) Reynaldi, Prio Aji; Puspitasari, Nia Budi
Industrial Engineering Online Journal Vol 13, No 3 (2024): WISUDA PERIODE JULI TAHUN 2024
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Diponegoro

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Abstract

Abstrak PT. Nusa Toyotetsu Corporation Plant 2 (NTC) menggunakan sistem produksi Just in Time (JIT) untukmenekan jumlah persediaan bahan baku, Work in Process (WIP), dan stok produk jadi. Produk RockerPanel Fortuner dan Rocker Panel Innova memiliki permintaan tinggi dan dalam prosesnya berpotensimenimbulkan waiting time atau idle time. Penelitian ini bertujuan untuk mengetahui kemampuanproduksi stasiun kerja yang diamati dalam memenuhi permintaan bulan Februari-Mei 2022 sertamengetahui waiting time atau idle time. Masukan yang utama untuk menyelesaikan masalah tersebutadalah Standard Time dan metode yang digunakan adalah Stopwatch Time Study. Hasil penelitianmenunjukan bahwa permintaan Februari-Mei 2022 dapat dipenuhi. Diketahui idle time pada RockerPanel Fortuner dan Innova beruturut turut adalah 1,3 s dan 9,76 s.Kata Kunci : Just in Time (JIT), Standard Time, Waiting Time, Idle Time, Kapasitas Produksi, TimeStudy, PT. Nusa Toyotetsu Corp., Elemen Kerja Abstract PT. Nusa Toyotetsu Corporation Plant 2 (NTC) uses the Just in Time (JIT) production system to reducethe amount of raw material inventory, Work in Process (WIP), and finished product stock. The RockerPanel Fortuner and Rocker Panel Innova has high demand and in the process has the potential to causewaiting time or idle time. This study aims to determine the production capability of the observed workstations in meeting the demand for February-May 2022 and to determine the waiting time or idle time.The main input to solve this problem is Standard Time and the method used is Stopwatch Time Study.The results of the study show that the demand for February-May 2022 can be fulfilled. It is known thatthe idle time on Rocker Panel Fortuner and Innova is 1.3 s and 9.76 s.Keywords : Just in Time (JIT), Standard Time, Waiting Time, Idle Time, Production Capacity, TimeStudy, PT. Nusa Toyotetsu Corp., Work Element
STUDI SIX SIGMA DALAM PENGENDALIAN KUALITAS PROSES PRINTING PADA GARMEN Ananda, Mikha; Puspitasari, Nia Budi
Industrial Engineering Online Journal Vol 13, No 4 (2024): WISUDA PERIODE OKTOBER TAHUN 2024
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Diponegoro

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Abstract

Abstrak PT XYZ merupakan perusahaan garmen dengan sistem produksi make-to-order. Salah satu prosesproduksinya adalah printing. Berdasarkan data defect sepanjang tahun 2022, didapatkan persentasedefect sebesar 0,314% di mana menurut Six Sigma, persentase defect terhadap jumlah produksi yangideal adalah 0,0003%. Penelitian ini bertujuan untuk mengusulkan solusi dalam meningkatkan kualitasproses in-house printing di PT XYZ. Hal ini dilakukan karena tingginya jumlah defect pada proses inhouseprinting yang seharusnya bisa diminimalkan pada proses sebelumnya. Peneliti menggunakanmetode Six Sigma karena metode ini memampukan peneliti untuk dapat mencoba memberikan solusiberdasarkan data kuantitatif beserta pengetahuan kualitatif yang telah didapatkan dari karyawankaryawanlapanganyangtentunyamemilikipengalamandanpemahamanlebihdalamdaripadapeneliti.Berdasarkanpenelitianini,didapatkanbahwalevelsigmarata-rataprosesin-houseprintingPTXYZpadatahun2022beradadilevelsigma4,58yangtentunyabelummencapailevelsigmaidealyaitu6.Defectterbesar diperoleh oleh defect snag/pull/pick yang merupakan salah satu defect fabric (kain),sehingga dilakukan analisis penyebab defect terbesar menggunakan fishbone diagram dan mengusulkansolusi perbaikan terhadap masalah tersebut.Kata kunci: DMAIC, industri garmen, printing kain, six sigma Abstract PT XYZ is a garment company with a make-to-order production system. One of the production processesis printing. Based on defect data for 12 periods in 2022, the total defect percentage is 0.314% whichaccording to Six Sigma theory, the percentage of defects to the ideal production amount is 0.0003%.Therefore, this research aims to propose solutions to improve the quality of the in-house printing processat PT XYZ. This is done because of the high number of defects in the in-house printing process that shouldhave been minimized in the previous process. The researcher used the Six Sigma method to be able to tryto provide solutions based on quantitative data along with qualitative knowledge that has been obtainedfrom field employees who certainly have deeper experience and understanding than the researcher.Based on this research, it is found that the average sigma level of PT XYZ's in-house printing process in2022 is at a sigma level of 4.58 which certainly has not reached the ideal sigma level of 6. The largestdefect is obtained by the snag/pull/pick defect which is one of the fabric defects, not the print defect, sothen analyze the causes of the largest defect using the fishbone diagram and propose an improvementsolution for these causes.Keywords: DMAIC; fabric printing; garment industry; six sigma
MENGETAHUI KUALITAS PROSES PRODUKSI CORRUGATED CARTON SHEET MENGGUNAKAN METODE FTA DAN FMEA MELALUI FASE DMAIC (Studi Kasus: PT Jawasurya Kencana Indah Semarang) Kholisoh, Ina Nurul; Puspitasari, Nia Budi
Industrial Engineering Online Journal Vol 13, No 2 (2024): WISUDA PERIODE APRIL TAHUN 2024
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Diponegoro

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Abstract

AbstrakPT Jawasurya Kencana Indah merupakan perusahaan yang berfokus pada produksi corrugated box dansheet. Persaingan dalam dunia usaha semakin ketat mendorong perusahaan terus mengembangkan danmeningkatkan kualitas hasil produksi. Maksimal waste produksi yang ditetapkan oleh perusahaan yaitusebesar 4,80% tetapi pada bulan Desember 2021 proses produksi menghasilkan waste 7,51% dimana 4.46%berasal dari waste bad sheet yang terjadi pada bagian corrugating. Penelitian menggunakan metode FaultTree Analysis (FTA) untuk mengidentifikasi akar masalah dan Failure Mode and Effect Analysis (FMEA)untuk mengetahui Risk Priority Number melalui fase Define, Measure, Analysis, Improve, Control (DMAIC).Berdasarkan hasil penelitian pada proses corrugating terdapat empat jenis defect yaitu krepek, skor variasi,potongan cengis dan gembos dimana krepek memiliki persentase tertinggi sebesar 64,85%. Kegagalanpotensial yang dapat menjadi akar masalah yaitu viskositas lem terlalu rendah, mesin glue roll membawalem tidak stabil, tension break kurang optimal, pemasangan roll kertas terlalu lama, dan air steam tidak dapatkeluar. Dari analisis FMEA diperoleh mesin glue roll membawa lem tidak stabil akibat glue roll aus memilikinilai RPN tertinggi sebesar 125. Usulan perbaikan yang diberikan yaitu melakukan pengecekan kesesuaianstandar kualitas bahan baku lem, melakukan pengecekan glue roll, silinder break, selang angin serta penyaluruap untuk meminimalkan potensi terjadinya defect.Kata Kunci: corrugated carton sheet; defect; DMAIC; FMEA; FTA Abstract[Title: Knowing the Quality of Corrugated Carton Sheet Production Processes Using FTA and FMEAMethods Through the DMAIC Phase (Case Study: PT Jawasurya Kencana Indah Semarang)]PTJawasurya Kencana Indah is a company that focuses on the production of corrugated box and sheet.Competition in the business world is getting tighter, encouraging companies to continue to develop andimprove the quality of production results. The maximum production waste set by the company is 4.80% butin December 2021 the production process produced 7.51% waste of which 4.46% came from bad sheet wastethat occurred in the corrugating section. The research uses the Fault Tree Analysis (FTA) method to identifythe root of the problem and Failure Mode and Effect Analysis (FMEA) to determine the Risk Priority Numberthrough the Define, Measure, Analysis, Improve, Control (DMAIC) phase. Based on the results of theresearch on the corrugating process, there are four types of defects, namely crepe, variation score, cengispiece and gembos where crepe has the highest percentage of 64.85%. Potential failures that can be the rootof the problem are glue viscosity is too low, glue roll machine carrying glue is not stable, tension break isnot optimal, paper roll installation is too long, and steam water cannot escape. From the FMEA analysis, itis obtained that the glue roll machine carrying unstable glue due to glue roll wear has the highest RPN valueof 125. The proposed improvements are checking the suitability of the glue raw material quality standards,checking the glue roll, cylinder break, wind hose and steam distributor to minimize the potential for defects.Keywords: corrugated carton sheet; defect; DMAIC; FMEA; FTA
Bot Innovation Realizing Service Excellence: Designing WhatsApp Chatbot as a Customer Service Solution Puspitasari, Nia Budi; Ginting, Asteria Noventi Ageta Br; Saribu, Aditya Agung F. Dolok
Jurnal Sistem Informasi Bisnis Vol 15, No 2 (2025): Volume 15 Number 2 Year 2025
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/vol15iss2pp221-229

Abstract

With the support of qualified employees, PT BPR PPK is a banking company that provides excellent customer service. According to interviews with Bank P employees and customers, customers are dissatisfied with the information they receive. Employees sometimes responded to customer inquiries about Bank P's products and banking within 1 to 2 weeks. Additionally, not everyone can access the website due to a lack of understanding of technology, particularly among older customers. As a result, customers require a more detailed, interactive, and easily accessible information system, mainly through integrating AI technology as a chatbot into the WhatsApp application. This research aims to make it easier for customers to access Bank P's banking information. The chatbot design employs the waterfall method, utilizing dialog flow tools and a decision tree chatbot type that aligns with the user's needs. According to black-box testing results, the chatbot system meets functional needs and follows the database. Meanwhile, the user satisfaction questionnaire yielded an average accuracy of 98.6%, demonstrating the chatbot's feasibility in providing customers with the necessary information. The chatbot system also received a positive response from users.
Co-Authors Abadan Magfira Abdurrobi Hanifa ABI HASBI ASSHIDIQI Adelia Chandradevi Adelia Chandradevi, Adelia Adinda Nurussakinah Aditya Dwi Rahmadi Aditya Hendra Aditya Wiratama Putra Afina Hasya Aimathin Diana Alfarel, Reihan Damario Ananda, Mikha Andini, Anggita Realiza Anindyanari, Odilia Sefi Annisa Maulidya ANNISA MAULIDYA Annisa Qisti Nurdinati Arianie, Ganesstri Padma Aries Susanty Arif Martanto Arif Martanto Ary Arvianto Arya Anantama R, Arya Anantama Audy Yumna Ardila Audy Yumna Ardila, Audy Yumna Avior Bagas E Avior Bagas Ertansyah Bambang Purwanggono BANGKIT RIZKY PRATOMO Banjarnahor, Agnes Claudia Cahya Farradita Sulistya Conni Valinda Conni Valinda, Conni Darminto Pujotomo Dausat, Muhammad Wahyu Ghuffara Jangka Dewi, Anggita Maya Dian Purnamasari Dian Ratnasari Diana Puspita Sari Dina Tauhida Dwi Rizkiyani Dyah Ika Rinawati Dyah Permata P Eldinda Sazida Permatasari Endah Kirana Farandy Anggarajati Darmawan Farisa Rima Sofiana Fauzan Karim Fajriansyah Febrina Ramadhona Ferastra, Kelvin Freddy Antonius Sihite Ginting, Asteria Noventi Ageta Br Hana Daryaningrum HANDOKO, AGIL Herry Suliantoro Heru Prastawa Hery Suliantoro Indratua Sinurat Kevin Kevin Khairunnisa Hanan Yancadianti Khairunnisa Hanan Yancadianti, Khairunnisa Hanan Kholisoh, Ina Nurul Laila Kusumawardhani Manindo Simanjuntak Mega Permata Sari Meisarah Sabrina Arifianty MOHAMMAD FAHD, MOHAMMAD Muhdam Azhar Ningtyas, Lintang Puspita Noor Arofah Alamiyah Novika Rahayu, Novika Nyimas Titiek Indriani Pertiwi, Yoana Ellen Petty Primatury Anjani Pungky Pramono, Susatyo Nugroho Widyo Prayudha Budi Hervino Raka Yogaswara Rani Rumita Retno Indriartiningtias Reynaldi, Prio Aji Rheza Arista Riandi Fauzan Riniwati Juliana Marbun Salsabila Amnes K.T Saribu, Aditya Agung F. Dolok Senja Puspita Sari Septian Adi Saputra Setiawan, Eric Priambodo Shelli Fardhiyah Sunny Singgih Saptadi Sulistya, Cahya Farradita Susatyo Nugroho W P Susatyo Nugroho W.P Tri Listyorini Trifandi Lasalewo Verra Erlianna Wibowo, Wisnu Mahendra Wiwik Budiawan Yusuf Kurniawan Wiguna Zainal Fanani Rosyada