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All Journal Jurnal Energi Dan Manufaktur Rekayasa Mesin JURNAL NASIONAL TEKNIK ELEKTRO Proceeding of the Electrical Engineering Computer Science and Informatics Jurnal Teknik Mesin Indonesia Mechanical Engineering for Society and Industry Universitas Muhammadiyah Yogyakarta Undergraduate Conference Proceeding METAL : Jurnal Sistem Mekanik dan Termal Journal of Fibers and Polymer Composites
Lovely Son, Lovely
Jurusan Teknik Mesin, Universitas Andalas, Padang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation

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EFFECT OF A SCALED CANTILEVER BEAM ON NATURAL FREQUENCY Jhon Malta; Arif Gunawan; Lovely Son
Jurnal Rekayasa Mesin Vol. 14 No. 2 (2023)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v14i2.1266

Abstract

This paper deals with the scaling factor's effect on the cantilever beam's natural frequency. Scaling a prototype dimension will make it easier to manufacture and test the dynamic characteristics of structures with enormous sizes. Natural frequency is one of the essential parameters of the vibration characteristics of the system. The phenomenon that often occurs in vibrating structures is the resonance phenomenon. Resonance is a system state in which an abnormally large vibration is generated in response to an external stimulus, happening when the frequency of the disturbance is equal to, or nearly identical to, the natural frequency of the system. This research investigates the scale factor on natural frequency using the analytical method using Euler-Bernoulli beam theory, the MSC Nastran/Patran software, and experimental testing using an impact hammer on a cantilever beam. The three methods were applied to beams with four scaling variations: 1:1, 1:2.04, 1:2.85, and 1:3.48. Based on the results, the natural frequencies increase by the size scale reduction value in the modeling. The natural frequency value in the actual structure has a value equivalent to 1/S of the natural frequency value of the scale, whereas S is defined as the downgrade scale value. This result follows the Similitude theory.
Effect of Trigger Configuration on Crash Box Energy Absorption in Vehicle Collisions using MSC Dytran Satria, Eka; Saputra, Dendi Adi; Dahlan, Hendery; Son, Lovely; Saputra, M. Fazri Irwan; Afrinaldi, Feri; Susanti, Lusi; HG, Sabri Haris
METAL: Jurnal Sistem Mekanik dan Termal Vol. 9 No. 1 (2025): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.9.1.38-45.2025

Abstract

Vehicle crashworthiness is a critical aspect of automotive safety engineering designed to minimize injury to occupants during collisions. This paper investigates the role of trigger mechanisms in enhancing crashworthiness by managing energy absorption and deformation during impact. Trigger mechanisms, including structural features like grooves, holes, or geometric discontinuities, initiate controlled deformation, optimizing energy dissipation. This study evaluates the effectiveness of crash boxes with various cross sections and six trigger designs: bead initiator, diamond notch, smaller thickness, circular notch, circular holes, and oval holes, to absorb energy of collision using computational software, MSC Dytran. The results show that a crash box with an octagonal section absorbs more energy than those with square, rectangular, or hexagonal sections. Among the introduced trigger designs, the models of bead initiator, circular notches, and circular holes were considerably the most effective in energy absorption.
Mapping IoT Applications in the Textile Industry: A Bibliometric Study using Biblioshiny and VOSviewer Kurnia, Deni; Sutanto, Agus; Fakhrurroja, Hanif; Son, Lovely
Proceedings of Universitas Muhammadiyah Yogyakarta Graduate Conference Vol. 5 No. 2 (2025): Fostering Gen Z for Sustainable Development and Renewable Energy
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/grace.v5i2.677

Abstract

The rapid advancement of technology, particularly the Internet of Things (IoT), has had a transformative impact on various industries, including the textile sector. IoT facilitates real-time data collection, monitoring, analysis, and decision-making, thereby enhancing efficiency, productivity, and resource sustainability. However, a comprehensive bibliometric study of IoT applications in the textile industry has yet to be undertaken. To address this research gap, this study employs bibliometric methods using the Biblioshiny R package and VOSviewer to examine research trends, key contributors, and emerging themes. By analyzing 177 relevant publications from 2015 to 2025, the study identifies major research directions, influential authors, leading institutions, and evolving areas of interest. The findings highlight a growing research focus on IoT-driven textile innovations, particularly the development of electronic textiles (e-textiles), which integrate electronic components into wearable devices for human use. This positioning of e-textiles at the forefront of smart wearable technology underscores their significance as a critical area of exploration within contemporary textile engineering. Furthermore, China, the United States, and India emerge as the predominant contributors to this research domain. The insights derived from this study offer valuable guidance for researchers, industry professionals, and policymakers, supporting future advancements and innovations in IoT applications within the textile industry.
A Numerical Study on the Effectiveness of U-Shaped Steel Metallic Dampers Applied to Braced Building Structures under Dynamic Loading Efrizal; Eka Satria; Irsal Oktofirnof; M. Raffi Akbar; Lovely Son; Dendi Adi Saputra; Mulyadi Bur
METAL: Jurnal Sistem Mekanik dan Termal Vol. 10 No. 1 (2026): METAL : Jurnal Sistem Mekanik dan Termal
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.10.1.8-15.2026

Abstract

The increasing demand for seismic-resilient structures has encouraged the development of advanced energy dissipation devices capable of reducing structural damage under strong ground motions. Among various passive control systems, metallic dampers have gained significant attention due to their stable hysteretic behavior, high energy dissipation capacity, and simplicity of installation. This study investigates the seismic performance of a building structure equipped with U-shaped steel metallic dampers installed within a chevron bracing system. The research is conducted through two complementary analytical stages. First, a detailed nonlinear finite element analysis is performed to evaluate the cyclic behavior of the U-shaped damper, accounting for both material and geometric nonlinearities. The resulting hysteresis curves are used to determine the elastic stiffness and energy dissipation capacity of the damper. In the second stage, the obtained mechanical properties are implemented into a dynamic numerical model of a multi-story building, where the damper is represented as spring element connecting the bracing system to the main structural frame. Linear time-history analyses are then conducted under earthquake ground motions to assess the dynamic response of the structure. The seismic performance of the damped structure is compared with that of an identical structure without metallic dampers in term of dynamic response. The results demonstrate that the proposed U-shaped metallic damper significantly enhances seismic performance by reducing structural demands and concentrating inelastic deformations within replaceable energy-dissipating components
Effectiveness of Roof Structures as Dynamic Vibration Dampers in Buildings under Dynamic Loading Zeki Midi; Eka Satria; Irsal Oktofirnof; M. Raffi Akbar; Lovely Son; Mulyadi Bur
METAL: Jurnal Sistem Mekanik dan Termal Vol. 10 No. 1 (2026): METAL : Jurnal Sistem Mekanik dan Termal
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.10.1.78-87.2026

Abstract

Buildings located in earthquake-prone regions are vulnerable to dynamic responses that may cause severe structural damage if not effectively controlled. One emerging approach for seismic response mitigation is the utilization of roof structures as dynamic damping systems. By appropriately tuning the mass, stiffness, and damping characteristics, roof structures can function as dynamic vibration absorbers through interaction with the main structural system. This study evaluates the effectiveness of roof structures acting as dynamic dampers in reducing the seismic responses of buildings. The research is conducted in two stages. The first stage involves a static analysis of U-shaped metallic dampers using the finite element method to determine stiffness and energy dissipation characteristics based on hysteresis curves obtained from cyclic loading. The second stage consists of a dynamic analysis in which the building structure and roof are modeled as a two-dimensional frame system, with metallic dampers installed between the building and the roof. Damper parameters are adopted from the static analysis results, while the roof mass is analytically determined to ensure its effectiveness as a dynamic damper. Dynamic analyses under earthquake excitation are performed to evaluate the reduction in structural displacement. The results indicate that roof-based damping systems can significantly reduce peak dynamic responses, particularly roof displacement and inter-story drift, demonstrating their potential to enhance the seismic performance of buildings in earthquake-prone regions
The Effect of Temperature on Manufacturing Process of Tannin Acid-Based Adhesive Materials on Mechanical and Physical Properties Mastariyanto Perdana; Hairul Abral; Lovely Son; Nanang Masruchin; Muhammad Azmi; Kadriadi Kadriadi
Journal of Fibers and Polymer Composites Vol. 5 No. 1 (2026): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v5i1.570

Abstract

This study focuses on the development and characterization of adhesives based on Polyvinyl Alcohol (PVA), Tannic Acid (TA), and Cellulose Nanofibre (CNF). The main objective is to optimize the temperature used in the production process. Phenol-formaldehyde and other synthetic adhesives frequently encounter environmental obstacles, necessitating the search for more ecologically sound alternatives. TA, a naturally occurring polyphenolic molecule, has significant potential as an eco-friendly glue ingredient. This study assesses the impact of temperature fluctuations (30, 45, 60, 75, and 90°C) during the glue manufacturing process on its mechanical characteristics, specifically emphasizing shear stress. Experiments were conducted at a rotational speed of 1500 revolutions per minute (RPM) for 30 minutes. The results indicated that the adhesive performed best at 90°C, achieving a maximum shear stress value of 3.41 MPa. The results demonstrated a significant enhancement in the shear strength of the bioadhesive, exhibiting an approximately sixfold increase as the processing temperature was elevated from 30°C to 90°C. Microstructural analysis reveals that the voids formed during the mixing process decrease at this specific temperature. The results indicate that elevated temperatures lead to a significant reduction in void formation. The FTIR measurement revealed the absorption of hydroxyl groups around 3305 cm⁻¹, suggesting the presence of robust crosslinking. Furthermore, elevated temperatures lead to a significant reduction of free OH- groups within the bioadhesive. The PVA/TA/CNF adhesive possesses extensive potential for application in industries that necessitate adhesives with exceptional strength. The study is anticipated to offer comprehensive understanding of how to improve the manufacturing process of TA-based adhesives, and its impact on the creation of adhesive materials that are more sustainable and environmentally friendly.
Smart vibration sensing and predictive analytics for intelligent textile manufacturing: An IoT-edge and machine learning method Kurnia, Deni; Sutanto, Agus; Fakhrurroja, Hanif; Son, Lovely
Mechanical Engineering for Society and Industry Vol. 5 No. 2 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.13588

Abstract

This study aimed to propose an IoT-Edge method for detecting vibration abnormalities in Textile Manufacturing, specifically on Draw Texturing Yarn (DTY) machines using an ADXL345 sensor and a Machine Learning Algorithm. The proposed system incorporated wireless sensor nodes, the MQTT protocol, Fast Fourier Transform (FFT) analysis, and a tuned Random Forest (RF) classifier to enable real-time monitoring as well as predictive maintenance. During the analysis, vibration data were collected from 13 spindles, with features extracted in both time as well as frequency domains to distinguish between normal and abnormal machine conditions. The RF model, optimized through hyperparameter tuning, achieved an accuracy of 97%, significantly outperforming the Support Vector Machine (SVM) baseline, which reached 71%. Major results showed the effectiveness of energy and centroid features in fault detection, with the Z-axis vibration proving to be a good indicator of yarn defects. The system presented low latency (average 20.37 ms) in data transmission using the MQTT protocol, ensuring practical deployability. This study offered a scalable and cost-effective solution for industrial vibration monitoring, bridging gaps in real-time processing and seamless IoT incorporation to support predictive maintenance in textile manufacturing.
Co-Authors Abral, Hairul Afrinaldi, Feri Agus Sutanto Ahnaf Faisal Ali Basrah Pulungan Arif Gunawan Darmawan, Darmawan David Alif Utama Dendi Adi Saputra M, Dendi Adi Deni Kurnia Dorce Yunirsyam Efrizal Eka Satria Eka Satria, Eka Fakhrurroja, Hanif Ferdian Kusuma Firman Zain Hendery Dahlan, Hendery HG, Sabri Haris Irsal Oktofirnof Iskandar Iskandar Jhon Malta Kadriadi Kadriadi Lusi Susanti, Lusi M. Raffi Akbar Mastariyanto Perdana Meifal Rusli Muhammad Azmi Mulyadi Bur Nanang Masruchin Pharmayeni Pharmayeni Pharmayeni, Pharmayeni Rachmad Afandi Saputra, M. Fazri Irwan Sepriyanto Sepriyanto Syafii . Syamsul Huda Zeki Midi