Setiawan, Fran
Unknown Affiliation

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

ON MODELLING AND SOLVING HETEROGENEOUS VEHICLE ROUTING PROBLEM WITH MULTI-TRIPS AND MULTI-PRODUCTS Setiawan, Fran; Masruroh, Nur Aini; Pramuditha, Zita Iga
Jurnal Teknik Industri Vol 21, No 2 (2019): JTI Dec 2019
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (672.059 KB) | DOI: 10.9744/jti.21.2.91-104

Abstract

Vehicle routing problem (VRP) is a model to determine an optimal routing plan for a fleet of homogeneous vehicles to serve a set customer which some operational constraints are satisfied. In most practical distribution problems, customer demands are served using heterogeneous fleet of vehicles. This kind of VRP is called Heterogeneous Vehicle Routing Problem (HVRP). HVRP has evolved into a rich research area because of its practical. There were many studies of rich extensions of the standar HVRP. This research aims to enrich the extentions of HVRP which is motivated by real case in one of pharmacy distribution company in Indonesia which is delivered multi-products to its 55 customers by allowing some vehicles which has small capacity to perform multi-trips. This problem is called Heterogeneous Vehicle Routing Problem with Multi-Trips and Multi-Products (HVRPMTMP).The mixed integer linear programming is developed based on four-index vehicle flow formulation. The model can be used generally in the same context of distribution problem. HVRPMTMP is generally NP-Hard problem, so the computational time using branch and bound in LINGO 16.0 is increasing exponentially by increasing the number of customers. Genetic algorithm is proposed to solve the real case. The result of the proposed GA can reduce the total cost from Rp 352540.6,- to Rp 180555,- or 48.78% from the current company policy.
Consolidation Model Recommendation for Rice Distribution in Indonesian Bureau of Logistics (West Java Regional Division) Setiawan, Fran; Pratiwi, Loren; Wigono, Elisa Ferdilia
Jurnal Ilmiah Teknik Industri Vol. 19, No. 02, December 2020
Publisher : Department of Industrial Engineering Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/jiti.v19i2.11908

Abstract

BULOG (Indonesian Bureau of Logistics) Regional Division West Java is a state-owned public company that regulates and maintains a supply of rice in order to meet the needs of all Indonesian people. Currently, BULOG distributing rice from one SubDivre warehouse to another SubDivre warehouse (point-to-point system) so shipping costs are higher because the frequency of transportation used is higher and the total distance traveled is higher. To reduce the cost of distribution, we propose consolidation model based on hub and spoke network topology. Hub and spoke system is done by determining which points become the hubs and which points become the spoke. The problem in determining the location of the hub and spoke is known as the hub location problem. In this problem, single allocation p-hub median problem is used. We use AMPL to get the solution. Various number of hubs (5,6,7) are tested and evaluated based on total shipping cost. The number of hubs which gives the minimum total shipping cost is 7. Delivery system using the hub and spoke network model can reduce the total cost of distribution by 13,94%.
Implementasi Teknik Lean Manufacturing untuk Meningkatkan Produksi Joint di PT Pratamaeka Bigco Indonesia Setiawan, Fran; Lee, Angelica Jesslyn Aprilia; Pramesthiwardhani, Maria Vionetta; Eigia, Cabrina
Jurnal PASTI Vol 14, No 3 (2020): Jurnal PASTI
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/pasti.2020.v14i3.001

Abstract

PT. Pratamaeka Bigco Indonesia merupakan salah satu perusahaan yang bergerak di bidang perancangan alat material handling. Perusahaan ini memproduksi sendiri komponen utama dari alat material handling berupa pipe dan joint. Permasalahan yang kerap kali terjadi adalah produksi joint tidak mencapai target produksi. Salah satu penyebab tidak tercapainya target produksi adalah waktu setup yang cukup lama. Oleh karena itu, dilakukan perbaikan dengan menggunakan metode Single Minute Exchange Dies (SMED). Usulan perbaikan yang diberikan kepada perusahaan adalah penggunaan stopper dan trolley. Selain itu, diusulkan juga untuk melakukan pergantian material ketika mesin 150T sedang beroperasi. Dalam menerapkan usulan-usulan tersebut, diperlukan perubahan layout pabrik dan implementasi 5S untuk menata tempat kerja. Dilakukan juga standarisasi proses kerja dengan menggunakan prinsip SOP dan visual display. Estimasi penurunan waktu setup dari hasil usulan perbaikan untuk mesin 150T, 110T dan 45T secara berturut-turut adalah 965 detik, 396 detik dan 216 detik. Setelah dilakukan perbaikan, target produksi belum juga dapat terpenuhi. Oleh karena itu, disarankan kepada perusahaan untuk menambah satu orang operator untuk mengoperasikan mesin.