Claim Missing Document
Check
Articles

A Modified Camel Algorithm for Optimizing Green Vehicle Routing Problem with Time Windows Utama, Dana Marsetiya; Safitri, Wa Ode Nadhilah; Garside, Annisa Kesy
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 24 No. 1 (2022): June 2022
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/jti.24.1.23-36

Abstract

In recent years, the issue of fuel depletion has become a significant problem in the world. The logistics sector is one of the sectors with an increase in fuel consumption. Therefore, route optimization is one of the attempts to solve the problem of minimization fuel consumption. In addition, this problem generally also has time windows. This study aimed to solve the Green Vehicle Routing Problem with Time Windows (GVRPTW) using the Camel Algorithm (CA). The objective function in this problem was to minimize the total cost of distribution, which involves the cost of fuel consumption and the cost of late delivery. The CA parameter experiment was conducted to determine the effect of the parameter on distribution cost and the computation time. In addition, this study also compared the CA algorithm's performance with the Local search algorithm, Particle Swarm Optimization, and Ant Colony Optimization. Results of this study indicated that the use of Camel population parameters and the total journey step affected the quality of the solution. Furthermore, the research results showed that the proposed algorithm had provided a better total distribution cost than the comparison algorithm.
Improving tofu product quality through the integration of the Kano model and Quality Function Deployment (QFD) Dinda Finandita Putri; Annisa Kesy Garside; Thomy Eko Saputro; Tyas Yuli Rosiani; Mohd Nabil Bin Muhtazaruddin
Journal Industrial Servicess Vol 12, No 1 (2026): April 2026
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jiss.v12i1.32596

Abstract

Many MSMEs struggle with process variations and inconsistent quality in the highly competitive tofu manufacturing industry. Problems such as unpleasant odors, inconsistent cut sizes, and irregular textures damage customer satisfaction and affect market competitiveness. In light of this, the aim of this study is to provide a systematic framework for identifying and prioritizing high-risk quality attributes in tofu products, using the case study in an MSME. Hence, this research develops a holistic approach that integrates the Kano model and Quality Function Deployment (QFD) to translate customer requirements into measurable technical actions. A survey of 73 respondents to the study identified 12 product attributes, classified into must-be, one-dimensional, and attractive attributes. So, these attributes were inserted in the HoQ-related matrix from which eight technical responses were ranked as mentioned before: high-quality soybean selection, elimination of chemical preservatives, boiling temperature control, and use of food-grade packaging materials. This integration provides a quantitative and systemic basis for process standardization in artisanal food production. It helps MSMEs establish an overarching strategic direction towards product consistency and, subsequently, competitiveness through data-driven quality improvement strategies.
PERANCANGAN CYLINDER CATCHPOT VACUUM INFUSION SEBAGAI MEDIA PEMBUAT KOMPOSIT SERAT KARBON Firman Yasa Utama; Mohammad Irfan; Annisa Kesy Garside; Andita Nataria F.G.; Ferly Isnomo Abdi
Otopro Vol 21 No 1 Nov 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v21n1.p30-37

Abstract

The use of metal or steel in a variety of applications has begun to be replaced by Carbon Fiber Reinforced Polymer (CFRP). Some of the advantages of CFRP include mechanical strength almost equal to, and sometimes exceeding, that of metal materials. One innovation in the manufacture of carbon fibre composites is the vacuum infusion method. Resin is drawn into the mould under suction pressure from a vacuum pump. Excess resin is drained from the mould through a hose and collected in a container, which also serves to control the vacuum pressure in the mould before it enters the pump. Previously, the catchpot was made of square-shaped iron with permanently welded joints, resulting in unstable suction pressure. Additionally, the resin's fast curing properties made cleaning difficult, leading to blockages in the hose over time. These issues highlight the need for a vacuum infusion design that is easy to open and close, easy to control and leak-proof. In this study, a research and development (R&D) approach was taken. The design process for the Cylinder Catchpot Vacuum Infusion begins with the design, calculation, and design stages, and ends with functional testing. The design process takes into account dimensions and the motor power required to use ¼HP for a 1-liter catchpot. The component is manufactured through the manufacturing stage and undergoes functional testing, where the Cylinder Catchpot Vacuum Infusion tool detects no leaks in the circuit, ensuring stable pressure, and ensuring proper resin distribution throughout the fibers, ensuring no voids in the composite
Determination of Preventive Maintenance Interval Based on Reliability Threshold and Risk-Based Maintenance Gilang Maulana Akbar; Annisa Kesy Garside; Rahmad Wisnu Wardana
Performa: Media Ilmiah Teknik Industri Vol. 25 No. 1 (2026): Performa: Media Ilmiah Teknik Industri
Publisher : Industrial Engineering Study Program, Faculty of Engineering, Universitas Sebelas Maret (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/performa.v25i1.2769

Abstract

PT. XYZ is a company engaged in sugar production, where the cane cutter machine plays a critical role in shredding sugarcane before extraction. During the milling period from May to November 2023, the machine experienced 31 breakdowns, leading to considerable downtime and increased operational costs. This study determines maintenance intervals using the Risk-Based Maintenance (RBM) approach to assess risk levels and the Cost of Unreliability (COUR) method to quantify financial impacts. The initial RBM analysis identified a monthly risk value of IDR 47,147,150. By implementing scheduled replacement intervals—17 days for the cutting knife, 28 days for the cutting disk, 14 days for the bearing, 31 days for the conveyor, and 26 days for the driving turbine—the Cost of Reliability (COR) was established at IDR 76,700,415/month. Although the planned expenditure increased, it remains within the company's 2% tolerance limit at a 1.66% severity level. Furthermore, the COUR analysis revealed that the potential downtime loss of IDR 238,583,981 far outweighs the preventive investment. These results demonstrate that integrating RBM and COUR methods effectively balances maintenance costs while protecting the company from disproportionate financial losses due to equipment unreliability.
ANALISIS PENGARUH MANUFAKTUR MESIN PENGASAH PISAU PLANAR TERHADAP AKURASI GEOMETRI DAN KEKASARAN HASIL ASAHAN Trio Setiyawan; Riles Melvy Wattimena; Timotius Anggit Kristiawan; Sugeng Irianto; Nur Hidayati; Dieta Wahyu Asry Ningtias; Annisa Kesy Garside; Mahendra Setya Pratama
Journal of Economic, Business and Engineering (JEBE) Vol. 7 No. 2 (2026): April
Publisher : Universitas Sains Al Qur'an

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32500/jebe.v7i2.11018

Abstract

Dalam industri pengolahan kayu performa pemotongan sangat bergantung pada stabilitas sudut asah dan tingkat kekasaran permukaan mata pisau, dimana sudut yang konsisten dan kekasaran permukaan mata pisau mempengaruhi  hasil dari serutan kayu semangkin presisi sudut dan rendahnya tingkat kekasaran maka semangkin tinggi pula kwalitas hasil serutan. Penelitian ini berfokus pada manufaktur mesin pengasah mata pisau planer guna mengidentifikasi parameter pengasahan yang optimal serta mengatasi limitasi metode manual yang memiliki kendala pada aspek presisi dan efisiensi waktu. Metodologi penelitian yang diterapkan adalah pendekatan Shigley, yang mencakup tahapan identifikasi kebutuhan, formulasi masalah, sintesis, analisis, optimasi, hingga evaluasi. Prosedur pengujian komprehensif dilakukan untuk memvalidasi kinerja sistem, meliputi: Uji Fungsional dan Keamanan memastikan seluruh mekanisme bekerja dengan baik dan aman. Uji Akurasi Geometris mengukur deviasi sudut asah menggunakan shadowgraph untuk memverifikasi kesesuaian antara sudut aktual dengan setting awal pada penjepit. Uji Parameter Kinematik menganalisis kecepatan rotasi batu gerinda dan kecepatan translasi meja. Hasil penelitian merealisasikan mesin pengasah pisau planer. Data eksperimental menunjukkan bahwa mesin ini mampu menghasilkan sudut pengasahan dengan tingkat presisi mencapai 99,55%. Pada parameter kecepatan sliding 0,011 m/s, diperoleh nilai kekasaran permukaan rata-rata (Ra​) sebesar 0,06 µm. Capaian ini menunjukkan kualitas permukaan yang jauh lebih unggul dibandingkan metode manual yang menghasilkan nilai Ra​ sebesar 0,235 µm. Implementasi mesin ini diharapkan dapat menjadi substitusi metode pengasahan konvensional untuk mencapai hasil yang lebih optimal, sekaligus menjadi referensi akademik dalam pengembangan teknologi pemesinan serupa di masa depan.
Analisis Kegagalan Self Moving Steering Akibat Degradasi Sensor Potensiometer Pada Kawasaki Rexpeller Thruster Untuk Operasi Kapal Harbour Tug Fajar Pujiyanto; Annisa Kesy Garside
Jurnal Universal Technic Vol. 5 No. 1 (2026): Jurnal Universal Technic
Publisher : Fakultas Teknik Universitas Maritim AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58192/unitech.v5i1.5406

Abstract

Keandalan sistem olah gerak kapal modern adalah kendali yang mengintegrasikan sensor, pengendali elektronik, aktuator hidrolik, serta unit propulsi thruster. Komponen penting pada sistem rexpeller adalah potensiometer, berfungsi sebagai feedback sensor untuk mendeteksi posisi sudut thruster. Penurunan performa sensor ini menyebabkan penyimpangan sinyal umpan balik, sehingga mengurangi akurasi pengendalian arah sudut thruster dan memicu terjadinya self moving steering. Penelitian ini bertujuan menganalisis kegagalan sistem kendali thruster akibat degradasi potensiometer dengan menggunakan pendekatan Engineering Failure Analysis. Metode penelitian dilakukan observasi langsung di kapal, pengukuran karakteristik resistansi, tegangan luaran, evaluasi respons sistem kendali, dan perbandingan terhadap spesifikasi dasar. Analisis teknik diperkuat mengidentifikasi hubungan antara degradasi sensor dengan performa sistem thruster. Dampak degradasi tehadap sistem yaitu penurunan akurasi pengendalian arah kapal, efisiensi propulsi, keandalan komponen hidrolik, keterlambatan respons dan unstabil steering, serta bahaya keselamatan navigasi. Hasil observasi menunjukkan penyimpangan karakteristik linier thruster pada sudut 50°, 70°, 90°, dan 110°. Lonjakan tegangan maupun penurunan resistansi menyebabkan ECU menerima informasi yang tidak sesuai dengan kondisi aktual, sehingga menghasilkan koreksi berulang dan munculnya fenomena self moving steering thruster. Analisis menunjukkan bahwa degradasi jalur resistif potensiometer, ketidakstabilan kontak internal, data ECU merupakan faktor dominan penyebab kegagalan sistem. Penelitian ini menegaskan bahwa degradasi sensor potensiometer berpengaruh langsung terhadap keandalan sistem kendali steering thuster dan kemampuan manuver kapal. Sebagai solusi rekayasa direkomendasikan tindakan lanjut yaitu kalibrasi berkala, inspeksi diagnostik, dan penggantian komponen sebelum terjadi kegagalan fungsional thruster.
Co-Authors Adelya Amanda Adhi Nugraha Adhi Nugraha Ahmad Zamawi Ghozali Alfian Alif Amelia Khoidir Andita Nataria F.G. ANDRI SULAKSMI ANDRI SULAKSMI, ANDRI Anindia Karunia Pangesti Aprilianti, Chusnul Azhar Adi Darmawan Bachri, Affan Baiq Nurul Izzah Farida Ramadhani Baiq Nurul Izzah Farida Ramadhani Baya’sud, Faris Cahyanti, Dian Nur Chairil Saleh Chusnul Aprilianti Dana Marsetya Utama Dian Nur Cahyanti Dian Palupi Restuputri Dieta Wahyu Asry Ningtias Dinda Finandita Putri Eduardo e Oliveira Ella Dewi Krisnanti Elya Rosiana Ernawan Setyono Fajar Pujiyanto Fenny Rubbayanti Dewi Ferly Isnomo Abdi Fibriani, Lenny Firman Yasa Utama FITHRIANY HADZIQAH FITHRIANY HADZIQAH, FITHRIANY Fitra Risaldi Fuad Bahrul Ilmi Gigih Amayu Pragastio Gilang Maulana Akbar Hanny Kanavika Rizky Munawar Harto, Setyo Hasyim Yusuf Asjari Hasyim Yusuf Asjari, Hasyim Yusuf Heri Mujayin Kholik Ikhlasul Amallynda Ikhlasul Amalynda Iswanda, Dovian Laili, Nabila Rohmatul Laksono, Arief Budi Lapele, Sukmawati Leo Rizki Ardiansyah Lukman, Mohammad Mahendra Setya Pratama Marrica Ahmad Marrica Ahmad Martina Juan Martina Juan, Martina Mohammad Irfan Mohd Nabil Bin Muhtazaruddin Muhamad Lukman Muhammad Alif Ihsan Muhammad Helmi Kurniawan Munawar, Hanny Kanavika Rizky Nabila Rohmatul Laili Nadia Mardhiyah Nasution, Riven Nur Hidayati Nyimas Mirnayanti Jayasari Sutadisastra Ode Rapija Gunarimba Waibo Pangesti, Anindia Karunia R. Hadi Wahyuono R. Hadi Wahyuono Rachman, Hamim Rahmad Wisnu Wardana Rara Putri Ayuning Tyas Renggarsari, Rika Risma Riles Melvy Wattimena Riven Nasution Sabrina Legtria Wardani Safitri, Wa Ode Nadhilah Sanjaya , Wahyu Eka Putra Sanjaya, Wahyu Eka Putra Santoso, Eko Wahyu Satya Sudaningtyas Satya Sudaningtyas Selsa Ulfia Siswanti Setyo Harto Shanty Kusuma Dewi Sugeng Irianto Teguh Baroto Thomy Eko Saputro Tiananda Widyarini Tiananda Widyarini Timotius Anggit Kristiawan Trio Setiyawan Tyas Yuli Rosiani Tyas Yuli Rosiani Wahyu Wicaksono Wardana , Rahmad Wisnu