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All Journal Jurnal Ergonomi Indonesia (The Indonesian Journal of Ergonomic) Jurnal Titra Seminar Nasional Informatika (SEMNASIF) Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri

Herry Christian Palit

Faculty Of Industrial Tehnology, Petra Christian University

Author-ID : 338788

Computer Science & IT Engineering Industrial & Manufacturing Engineering Public Health

Published : 42 Documents Claim Missing Document

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SISTEM PENGENDALIAN KUALITAS DENGAN BANTUAN EXPERT SYSTEM UNTUK MENURUNKAN TINGKAT KECACATAN PRODUK (Studi Kasus di Perusahaan Pembuat Filaman Lampu) Shelly Yuliana; Herry Christian Palit; Claudina Milawati
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 7 No. 2 (2005): DECEMBER 2005
Publisher : Institute of Research and Community Outreach - Petra Christian University

The research discusses the quality control system in producing lamp filament. Meantime, the quality control system produces ahigh level of failure, 10-17%. The result of the identification revealed that the primary coil and double coil processes have the highest failure, ± 17%, and the main cause of rejection is the unflat coil. The research covers the development of attribute control chart (p chart), before and after implementations, development of control plans and documents needed, expert system program to investigate the root cause of the failure, proportional test and final result failure. The result of the implementation of suggestion, gives a significant decrease of failure and the average of failure level of the final product is average 5.74%. Abstract in Bahasa Indonesia : Penelitian ini membahas sistem pengendalian kualitas pada pembuatan lampu filamen. Sistem pengendalian kualitas yang berjalan sekarang menghasilkan kecacatan yang tinggi, 10-17%. Identifikasi yang telah dilakukan menunjukkan bahwa proses primary coil dan double coil memiliki tingkat kecacatan terbesar ± 17% dengan penyebab utama reject adalah coil tidak rata. Penelitian yang dilakukan meliputi pembuatan dan monitoring peta kendali atribut (p chart) baik awal dan akhir hasil implementasi usulan, pembuatan control plan, dokumen-dokumen terhadap pengendalian penyebab kecacatan utama, program expert system yang digunakan untuk penelusuran penyebab kecacatan, uji proporsi dan tingkat kecacatan akhir. Hasil implementasi usulan memberikan penurunan tingkat kecacatan yang signifikan terhadap penyebab kecacatan utama dan rata-rata tingkat kecacatan produk akhir sebesar 5,74%. Kata kunci: sistem pengendalian kualitas, expert system.

APLIKASI KOMBINASI ALGORITMA GENETIK DAN DATA ENVELOPMENT ANALYSIS PADA PENJADWALAN FLOWSHOP MULTIKRITERIA Herry Christian Palit; Haris Lienardo; I Gede Agus Widyadana
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 10 No. 1 (2008): JUNE 2008
Publisher : Institute of Research and Community Outreach - Petra Christian University

This article discusses the combination of genetic algorithm (GA) and Data Envelopment Analysis (DEA) to solve the flowshop scheduling problems with multicriteria. The criteria are makespan, total weighted tardiness, and mean flow time. DEA is used to calculate the overall value of criteria from each sequence. Relative efficiency value is employed as the fitted value in genetic algorithm, in order to have overall value that independent to a particular weight. The proposed algorithm that combines GA and DEA attain optimal solutions with relative efficiency as good as analytical solution, i.e., Mixed Integer Programming (MIP). From 30 problems generated, only one problem (3,33%) has relative efficienly less than 1. Abstract in Bahasa Indonesia: Artikel ini membahas kombinasi algoritma genetik dengan Data Envelopment Analysis (DEA) untuk pemecahan masalah penjadwalan flowshop multikriteria. Kriteria-kriteria yang digunakan, yaitu makespan, total weighted tardiness, dan mean flow time. DEA digunakan untuk menghitung nilai keseluruhan kriteria dari setiap sequence dengan menggunakan nilai efisiensi relatif sebagai fitted value dalam algoritma genetik. Hal ini ditujukan agar nilai keseluruhan dari kriteria-kriteria yang ada tidak terikat pada satu jenis bobot saja. Kombinasi dua metode ini menghasilkan suatu algoritma yang mampu menghasilkan kumpulan solusi optimal dengan nilai efisiensi relatif yang tidak kalah jika dibandingkan dengan hasil dari model Mixed Integer Programming (MIP), dimana dari 30 masalah yang dibangkitkan, hanya ada 1 masalah (3,33%) yang memiliki efisiensi relatif di bawah 1. Kata kunci: penjadwalan flowshop, algoritma genetik, Data Envelopment Analysis.

Perbandingan Kombinasi Genetic Algorithm – Simulated Annealing dengan Particle Swarm Optimization pada Permasalahan Tata Letak Fasilitas Isabella Leo Setiawan; Herry Christian Palit
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 12 No. 2 (2010): DECEMBER 2010
Publisher : Institute of Research and Community Outreach - Petra Christian University

This article aims to compare the performance of combination of Genetic Algorithm-Simulated Annealing (GA-SA) with Particle Swarm Optimization (PSO) to solve facility layout problem. GA-SA in this article consist of two algorithms, GA-SA I and GA-SA II, with a different mutation rule. PSO uses fuzzy particle swarm concept to represent solution from each particle. Two criteria to analyze all algorithms performance are moment of movement and computational time. Experiments show that GA-SA II has the best performance in minimization both criteria

Perancangan Tata Letak Penyimpanan Material di Gudang Packaging PT X Rachel Christina; Herry Christian Palit
Jurnal Titra Vol 8, No 2 (2020): Jurnal Titra 8(2) Juli 2020
Publisher : Jurnal Titra

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PT X is a multinational manufacturing company located in Surabaya that produce mosquito coils. The current warehouse system is using a random storage method where the same code materials are storage separatedly. Random method that company use occurs high number of materials’ moment displacement and transportation time. The main purpose of this research is to design material’s storaging layout with classbased storage method that minimizing moment displacement and transportation time. Minimizing moment displacement is done by ABC classification, family grouping, and material’s placement at storage while transportation time is measured by Promodel simulation from the storage area to warehouse exit. There are two main proposed soulution in this research the first is dedicated storage location for each material’s type for first floor warehouse and the second is devided storage area into three area based on classification and distance measurement for second floor warehouse. Results of this proposed soulutions are reducing moment displacement as 25.12% and 21.51% for first and second floor warehouse also minimizing average transportation time as 3.94 minutes.

Perancangan Evaluasi Vendor pada Departemen Ekspor-Impor di PT X Tirza Christina Seputra; Herry Christian Palit
Jurnal Titra Vol 8, No 2 (2020): Jurnal Titra 8(2) Juli 2020
Publisher : Jurnal Titra

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Vendor evaluation is an important activity to assess vendor performance. PT X is a manufacturing company that manufactures bicycle. Vendor evaluation on export-import department in PT X has been done periodically, every six month. However, the evaluation has been done subjectively because the assessment is qualitative. It is also didn’t give the final conclusion whether the vendor’s performance was good or bad. This is because there are no indicators that indicate whether the vendor’s performance was good or bad. This study applies analytical hierarchy process method in redesigning vendor evaluation to help the company in making multi-criteria decisions. Evaluation items are redefined through the interview and given weights that represent the company’s preferences in evaluating vendors. Evaluation items and weights are arranged into vendor evaluation forms using Microsoft Excel. The results of the study are 3 types of vendor evaluation designs, namely for export vendor EMKL, import vendor shipping agent, and import vendor EMKL.

Evaluating Stretch Wrap Alternative Used in Goods Consolidation at an Electronics Manufacturing Using Triple Bottom Line Jordan Lay; Herry Christian Palit
Jurnal Titra Vol 8, No 2 (2020): Jurnal Titra 8(2) Juli 2020
Publisher : Jurnal Titra

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PT. X is an electronics manufacturing that produces various electronics product and components. The company operates three manufacturing plants and one main warehouse; they are all located in separate buildings. Material and components required for manufacturing are stored and delivered from the main warehouse; each materials and components are consolidated and put into a pallet and secured by stretch wrap first before being transported to the three manufacturing plants. The pallet movement is a closed loop, meaning the empty pallets are returned back to the main warehouse. Stretch wrap is a single-use material, once used are discarded. The use of such material is a sustainable issue. Using Triple Bottom Line approach for the sustainable problem to evaluate and produce a suitable alternative that is sustainable and doesn’t burden the PT X’s financials. TBL approach selects an alternative that can replace stretch wrap by evaluating and measuring how each consolidation method and tool based on factors of Economic Measure, Environmental Measure and Social & Human Measure. Resulting evaluation produces that the suggested alternative, pallet cover is a more economically viable, reusable and relatively easy to use, meaning a better solution.

Perbaikan Stasiun Kerja Packing untuk Menurunkan Keluhan Otot Rangka dan Meningkatkan Produktivitas Pekerja PT Y Marvin Abraham; Herry Christian Palit
Jurnal Titra Vol 8, No 2 (2020): Jurnal Titra 8(2) Juli 2020
Publisher : Jurnal Titra

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PT Y is a food company that produces wet pia, wet pia that is produced has a variety of flavors, one of which is chocolate, vanilla and others. This study aims to reduce the level of complaints in skeletal muscle and increase the productivity of workers at the packing station work station. Workers at the packing station have an average score of skeletal muscle complaints of 37.5 this value has a greater value than all departments in PT Y. This study uses data collection methods with the nordic body map questionnaire, finding the standard time of workers and analysis of total output, increasing the number of sales at PT Y. The analysis carried out aims to find out this research can solve existing problems or not. The results of this study indicate that the nordic body map method has a significantly reduced pain level in the muscles of the skeletal muscle, because the p-value is below 0.05. The standard time calculation method has decreased and increased productivity of workers with a value of 19.64 packs per hour to 23.16 packs per hour. This research can be a good investment because the total costs incurred do not affect the existing sales value.

Perancangan Layout Penempatan Material pada Gudang PT. XYZ untuk Implementasi Sistem FIFO Jezreel Willy Adichnadra; Herry Christian Palit
Jurnal Titra Vol 10, No 1 (2022): Jurnal Titra Januari 2022
Publisher : Jurnal Titra

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The problem that exists in the warehouse at PT. XYZ is that there is no material placement layout in the warehouse that supports the FIFO system. The proposal given is to make a layout of material placement in the warehouse by calculating the number of pallets used for each existing material and making a storage and retrieval mechanism that supports the FIFO system will run better. The proposed results can create a more friendly environment for the FIFO system. The ABC method is the main method used to determine the priority of material mapping on the shelves in the warehouse. Then by finding the right order of priority, the calculation to determine the number of pallets used for each material will be easier to find and do. The calculation of the use of pallets that have been obtained will be a reference for the exact location of the material on the shelves in the warehouse, so that the placement of materials in the warehouse will be arranged which creates an environment that makes it easy to find each material to be found and the FIFO system will be easier to run.

Perancangan Nomor Spare Part dan Pengendalian Persediaan Gudang Spare Part di PT X Monica Yunita; Herry Christian Palit
Jurnal Titra Vol 8, No 2 (2020): Jurnal Titra 8(2) Juli 2020
Publisher : Jurnal Titra

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PT X is company that produces products from palm oil. The production process is carried out using a machine. Spare parts are provided by the spare parts warehouse. Currently, the material number of spare parts consists of 6 random numbers. New material numbers are created using the group technology approach to simplify identification of spare parts. New material number consists of 12 numbers, 4 numbers for machine codes, 3 numbers for component group codes, 2 numbers for component type codes, and 3 numbers for spare part codes. Inventory control in the spare part warehouse is also inefficient. New inventory control are created using periodic review method. Inventory control with a service level of 95% for class A and class B, results in 8.64% cost savings with 4 types of stockout items. Changing the service level 78% in class B results in 15.9% cost savings with 9 types of stockout items.

Perancangan Ulang Lintasan Produksi Cell Assembly Connector 3P di PT. Schneider Electric Manufacturing Batam menggunakan Metode Line Architecture Design Methodology Julius Oscar; Herry Christian Palit
Jurnal Titra Vol 10, No 2 (2022): Jurnal Titra 10(2) Juli 2022
Publisher : Jurnal Titra

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PT. Schneider Electric Manufacturing Batam will efficiently redesign the cell assembly connector 3P production line for Everlink 3P, Everlink 4P and the new GZ3 product. The redesign was carried out using the Line Architecture Design Methodology. With the Customer Demand for the three products of 346.63 Pcs/Hr, an architectural design was produced with a total of 3 cells, 2 operators per cell and 3 operations per cell and additional benches to overcome production capacity problems. The new design can produce 384 Pcs/Hrs so that it can meet Customer Demand until 2025. In actual application, the company makes architectural designs with 1 cell, 6 operators per cell and 8 operations per cell. The actual design is not suitable in terms of workload and elasticity, but it can still run to meet the number of consumer demands. Meanwhile, in terms of ergonomics, it is still classified as medium level, which means it is still allowed to operate.

Co-Authors Abd. Rasyid Syamsuri Albert Wijaya Alexander Setiawan Andrieas Sugiono Christianto Felix Juwono Suganda Claudina Milawati Claudina Milawati Daniel Kurniawan Debora Anne Yang Aysia Deisy Ongke Dick Felixs Wibowo Edwin Setiawan Elvira Lionora Ngono Ferdiarto Limantoro, Ferdiarto Gerry Anggian Gunawan Haris Lienardo Haris Lienardo Hermin Novianti Hermin Novianti I Gede Agus Widyadana I Gede Agus Widyadana I Ketut Suada Ika Munika Ika Munika Isabella Leo Setiawan Isabella Leo Setiawan James Lee Jezreel Willy Adichnadra Joan Yuwono Jong Feliando Yonatan, Jong Feliando Jordan Lay Julius Oscar Karine Santoso Putri Kristina Halim Lim Robby Jayadi Livia Kirana Utomo Marvin Abraham Mintarto Leopatria Monica Yunita Novia Veronika Yuliani, Novia Veronika Patrick Eving Rachel Christina Rizal Setiawan Robert Gorevi Sanjaya Shelly Yuliana Shelly Yuliana Thomas Hariono Tirza Christina Seputra Togar W.S Panjaitan Tommy Alvianto Ongkodjojo Vicky Hartono, Vicky Wilson Sanada Yoppy Setiawan Yunita Velany Sulayman Zeus Abdi Yuwono, Zeus Abdi

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