Publikasi Universitas Mercu Buana
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Analysis of Variation in Fiber Volume Fraction on Torsional Strength of Epoxy and Polyester Matrix Coconut Fiber Composites
No full textNatural fibers can be employed to enhance the strength and rigidity of composite structures. These fibers can be combined with matrix materials to create composite materials. One specific example of a natural fiber is coconut fiber. Unfortunately, coconut fiber is currently underutilized, leading to organic waste. However, coconut fiber offers several advantages as a substitute for automotive product composites despite facing specific technical challenges. Hence, it is important to understand the potential of coconut fiber composites with epoxy and polyester matrices. This study aimed to assess the capabilities of coconut fiber composites with epoxy and polyester matrices through a torsion test. The study involved conducting torsion tests on composites with varying volume fractions, precisely 25:75, 30:70, 35:65, and 40:60 (coconut fiber fraction to polyester/epoxy fraction). The research entailed creating torsion test specimens and performing the torsion tests. Subsequently, an analysis of the torsion test results was conducted. This research indicates that coconut fiber with an epoxy matrix demonstrated a maximum stress value of 31.27 MPa and a maximum shear strain value of 1.022 rad at a 30% volume fraction. Similarly, coconut fiber composite with a polyester matrix exhibited a maximum stress value of 27.83 MPa and a maximum shear strain value of 0.91 at a 30% volume fraction. Based on these outcomes, it can be concluded that the optimal volume fraction of coconut fiber for producing satisfactory specimens is 30%, regardless of whether the composites have epoxy or polyester matrices
Performance Analysis of Centrifugal Pumps Before and After Wear Ring Restoration
No full textA pump is a mechanical device used to move fluids from a lower elevation to a higher one. In general, pumps are classified into two types: positive displacement pumps and non-positive displacement pumps. Centrifugal pumps fall into the latter category and operate by converting mechanical energy into kinetic energy to transport fluids. A centrifugal pump consists of several key components, including the casing, shaft, bearing, coupling, and impeller. In the case of closed impeller-type centrifugal pumps, wear rings (wearing components) are installed to provide a clearance between the impeller and the casing, preventing physical contact during operation. The size of this clearance significantly affects pump performance. Wear ring damage can result from mechanical wear, corrosion, cavitation, and fatigue, leading to performance losses such as reduced flow rate, lower pressure, and decreased efficiency. This research aims to analyze the effect of wear ring damage on the performance of a centrifugal pump by comparing operational data before and after repair of the wearing components. The performance parameters evaluated include pump head, pressure, hydraulic power, motor power, and overall efficiency. Data were collected through a structured procedure consisting of preparation, testing, measurement, and analysis. Prior to repair, the pump operated with a wear ring clearance of 1.2 mm, resulting in an average efficiency of 8.5% and a flow rate of 0.000646 m³/s. After the clearance was restored to 0.43 mm, the average efficiency increased to 15.5%, with a corresponding flow rate of 0.000932 m³/s. These results demonstrate that maintaining wear ring clearance within recommended standards significantly improves pump performance, highlighting the importance of regular maintenance and timely component repair
Decision Support System in Determining the Optimal Raw Material Supplier Using a Combination of Entropy and MOORA
No full textThe selection of the right raw material supplier plays a crucial role in ensuring the efficiency and sustainability of supply chain management. However, the decision-making process is often complex due to the multiple criteria that must be considered simultaneously, such as quality, price, delivery timeliness, production capacity, and flexibility. To address this challenge, this study applies a decision support system that integrates the Entropy method for objective weighting of criteria and the MOORA method for ranking alternatives. Entropy weighting provides an unbiased determination of the importance of each criterion based on data variation, while MOORA delivers a systematic ranking of suppliers by combining benefit and cost criteria into a comprehensive performance score. The results of the analysis on eight supplier alternatives show that Supplier S8 achieves the highest ranking, followed by Supplier S3 and Supplier S6, indicating their superior ability to meet the defined criteria, especially in capacity and flexibility. Meanwhile, Supplier S4 ranks the lowest, reflecting its relatively weaker performance across several aspects. These findings demonstrate that the combination of Entropy and MOORA provides a reliable, objective, and transparent framework to support decision-making in supplier selection
Integrasi Total Productive Maintenance dan Keberlanjutan: Studi Literatur Review
Get PDFPenelitian ini mengkaji keterkaitan Total Productive Maintenance (TPM) dan sustainability melalui tinjauan pustaka serta analisis bibliometrik terhadap 30 publikasi indeks Scopus periode 2015–2024. Data diperoleh dengan kata kunci “Total Productive Maintenance” dan “Sustainability”, lalu dikelompokkan menurut pilar TPM dimensi keberlanjutan (ekonomi, lingkungan, sosial), sektor industri, periode, dan lokasi penelitian. Hasil menunjukkan dimensi ekonomi dan lingkungan menjadi fokus utama, khususnya pada pengurangan pemborosan dan peningkatan efisiensi energi melalui pilar Autonomous Maintenance, Quality Maintenance, dan Focused Improvement. Pendekatan komprehensif yang melibatkan semua pilar terbukti meningkatkan daya saing operasional sekaligus meminimalkan dampak lingkungan. Aspek sosial terwujud melalui praktik 5S dan program pelatihan, meningkatkan kesejahteraan karyawan dan keterlibatan komunitas. Tren sejak 2020 menunjukkan integrasi TPM dengan teknologi Industri 4.0—digital lean tools dan blockchain—untuk meningkatkan akurasi prediksi kegagalan dan transparansi pemeliharaan. Berdasarkan temuan tersebut, direkomendasikan agar industri mengadopsi TPM secara menyeluruh dengan perhatian seimbang pada seluruh pilar serta memanfaatkan Internet of Things, data analytics, dan blockchain untuk mendukung green maintenance. Pembuat kebijakan perlu merumuskan pedoman Sustainable TPM yang adaptif sesuai karakteristik sektor. Penelitian selanjutnya hendaknya melakukan studi empiris longitudinal guna mengukur dampak jangka panjang sinergi TPM dan green manufacturing
Evolving Patterns in Lean Six Sigma Project Selection Methods
Get PDFPenelitian ini bertujuan untuk mengidentifikasi dan menganalisis metode yang digunakan dalam pemilihan dan prioritisasi proyek Lean Six Sigma (LSS), serta mengevaluasi pendekatan yang paling sering diterapkan dalam literatur. Metode yang digunakan adalah tinjauan literatur sistematis terhadap 44 artikel jurnal ilmiah terindeks yang diterbitkan antara tahun 2010 hingga 2024. Artikel yang dianalisis secara khusus membahas berbagai pendekatan pengambilan keputusan dalam seleksi proyek LSS. Hasil kajian menunjukkan bahwa Analytic Hierarchy Process (AHP) merupakan metode yang paling banyak digunakan, sering kali dikombinasikan dengan metode lain seperti Data Envelopment Analysis (DEA) dan teknik Multi-Criteria Decision Making (MCDM) untuk meningkatkan objektivitas dan akurasi keputusan. Selain itu, metode Best-Worst Method (BWM), sebagai pendekatan yang lebih baru, semakin sering digunakan terutama dalam studi dari India, karena kemampuannya dalam mengelola sejumlah besar kriteria secara efisien dan konsisten. Studi ini juga mengungkap tren kuat menuju penggunaan pendekatan hybrid dan berbasis data, yang dianggap lebih adaptif terhadap kompleksitas proyek serta tuntutan era digital. Temuan ini memberikan kontribusi penting bagi pengembangan kerangka kerja seleksi proyek yang lebih sistematis, fleksibel, dan kontekstual dalam implementasi Lean Six Sigma
PERANCANGAN MEXED-USE BUILDING BERBASIS TOD DENGAN KONSEP ARSITEKTUR BIOFILIK DI PORIS PLAWAD, KOTA TANGERANG
No full textPerancangan Mixed-Use Building Berbasis TOD dengan Konsep Arsitektur Biofilik di Poris Plawad, Kota Tangerang. Dibimbing oleh Joni Hardi. Penelitian ini membahas perencanaan dan perancangan sebuah bangunan multifungsi di Kawasan Poris Plawad yang mengintegrasikan fungsi convention center dan hotel dengan aksesibilitas ke berbagai moda transportasi, termasuk kereta api, busway, dan taksi online. Kawasan ini terhubung dengan Stasiun Batu Ceper yang melayani KRL Commuterline Tangerang-Duri dan KAI Bandara Soekarno-Hatta yang menyediakan kemudahan akses ke Bandara Internasional Soekarno-Hatta. Penelitian ini juga mempertimbangkan kurangnya ruang terbuka hijau dan kondisi alami di Kota Tangerang, sehingga perancangan bangunan ini mengintegrasikan konsep biofilik untuk memberikan manfaat tambahan berupa pengurangan stres, kecemasan, dan depresi, serta meningkatkan kualitas hidup penggunanya.Kata kunci: Arsitektur biofilik, mixed-use, transit oriented developmen
Perancangan Asrama Haji Embarkasi dengan pendekatan Arsitektur Tropis
No full textMayoritas penduduk Indonesia merupakan penganut agama Islam. Berdasarkan hasil sensus Badan Pusat Statistik pada tahun 2010, 87,18% dari 237.641.326 penduduk Indonesia menganut agama Islam sehingga Indonesia tergolong sebagai salah satu negara dengan penganut agama Islam terbesar di dunia. Bagi umat Islam ibadah haji yang dilaksanakan pada bulan Dzulhijjah merupakan salah satu syarat sempurnanya keimanan mereka. Laporan Kementerian Agama (Kemenag) menunjukkan, kuota haji Indonesia pada 2022 mencapai 100.051 orang. Tema yang diambil pada perancangan Asrama Haji Embarkasi adalah Arsitektur Tropis. Kondisi iklim yang mempengaruhi desain bangunan seperti temperature udara, radiasi matahari, angin, kelembaban, serta curah hujan
PERANCANGAN TEATER ORKESTRA DI BSD CITY BERDASARKAN KESELARASAN MUSIK DAN ARSITEKTUR DENGAN PENDEKATAN METAFORA
No full textMusik orkestra memiliki peran penting dalam perkembangan budaya manusia, dengan kekayaan dan kompleksitas yang mampu memberikan pengalaman emosional mendalam. BSD City, sebagai kota mandiri yang berkembang pesat, memiliki potensi besar untuk menjadi pusat apresiasi musik orkestra. Namun, fasilitas yang tersedia, seperti ICE BSD, belum sepenuhnya mewadahi kegiatan edukasi, latihan, dan apresiasi musik orkestra secara komprehensif. Oleh karena itu, diperlukan kawasan orkestra terintegrasi yang tidak hanya berfungsi sebagai tempat pertunjukan, tetapi juga sebagai pusat pengembangan bakat dan edukasi. Perancangan kawasan ini mengusung konsep "Architecture as a Frozen Music," yang menerjemahkan elemen musik ke dalam bentuk arsitektur melalui pendekatan metafora. Konsep ini diwujudkan dalam desain Gedung Teater Orkestra yang terinspirasi oleh Simfoni No. 5 karya Ludwig van Beethoven, yang mencerminkan dinamika, ritme, dan emosi dalam bentuk spasial. Dengan pendekatan ini, diharapkan kawasan orkestra di BSD City dapat meningkatkan apresiasi masyarakat terhadap musik orkestra serta memberikan kontribusi bagi perkembangan seni dan budaya di Indonesia
Design and Construction of a Web-Based Crowdfunding Application Using the Laravel Framework
No full textThis research uses RAD analysis research method, diagram design using UML, system coding using PHP programming language and Mysql database. This research produces a web-based ordering system that is connected to a database so that order data can be stored properly. This research aims to design and build a web-based crowdfunding application to address inefficiencies in conventional ordering and donation systems, particularly in industrial environments. The study highlights the increasing importance of digital fundraising and the role of crowdfunding as an effective platform for connecting fund-seekers with potential donors. Using the Laravel framework and MySQL database, the system was developed to improve transparency, accessibility, and transaction management. The research applies the Waterfall development method and includes structured interviews and observation as part of the requirement-gathering process. The result is a functional, secure, and scalable web application that enables users to create, manage, and donate to campaigns with real-time tracking and integrated payment systems. This system enhances organizational outreach and improves the efficiency of donation and fund distribution processes
Designing a Web-based Application Mockup for the Registration of Undergraduate Students at Mercu Buana University
Get PDFNew student registration is one of the critical administrative processes in higher education institutions. In the current digital era, web-based systems offer greater practicality compared to the traditional methods, which are often slow and prone to errors. However, many existing systems focus solely on collecting registration data, neglecting the ongoing informational needs of students’ post-registration. This study proposes the design of a web-based registration system that not only facilitates the registration process but also integrates essential features for broadcasting orientation schedules, campus announcements, and other critical information within a single platform. The design incorporates real-time notifications, user-friendly dashboards, and strong data protection measures to enhance user experience and security. Using the waterfall methodology, the study progresses through problem identification, requirements analysis, system design, and prototype evaluation. The resulting prototype, developed using Figma, is tailored to meet the needs of new students and improve campus administrative efficiency. Evaluation results demonstrate that the proposed system effectively bridges gaps in both registration processes and student information management