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All Journal Jurnal Ilmu Pertanian Indonesia Transmisi Rekayasa Mesin Journal of Mechanical Engineering Science and Technology JPSE (Journal of Physical Science and Engineering) Buletin Ilmiah Sarjana Teknik Elektro Jurnal Karinov Jurnal Abdi Insani Jurnal Pengabdian, Pendidikan dan Teknologi Jurnal Graha Pengabdian Teknomekanik International Journal of Education, Vocational and Social Science Algebra : Jurnal Pendidikan Sosial dan Sains
Heru Suryanto
Universitas Negeri Malang
Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Neuroscience Physics Social Sciences Other

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Characteristics of sisal-epoxy composite boards with sodium chloride-treated fibers at different treatment temperatures Setyayunita, Tamaryska; Suryanto, Heru; Aminnudin, Aminnudin; Osman, Azlin Fazlina; Yanuhar, Uun
Teknomekanik Vol. 8 No. 1 (2025): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v8i1.35572

Abstract

The growing environmental concerns associated with synthetic fibers have led to the increased adoption of bio-fibers as reinforcements in polymer composites. Sodium chloride (NaCl) is explored as a fiber treatment agent to enhance the adhesion between fibers and the matrix. The study aims to evaluate the effects of NaCl treatment on the characteristics of sisal fiber-epoxy composite boards. A completely randomized design was applied with three factors: treatment temperature (25 °C and 100 °C), NaCl concentration (1, 3, and 5 wt%), and composite board density (0.40, 0.60, and 0.80 g/cm³). Sisal fibers were soaked in NaCl solutions for one hour, rinsed, dried, and manually blended with epoxy at a ratio of 80:20 wt%. Composite board properties were observed according to the standards of JIS-A-5908, Fourier Transform Infrared Spectroscopy (FTIR), and Scanning Electron Microscopy (SEM). Results indicated that increasing the NaCl concentration and treatment temperature significantly improved the properties of the composite board. The optimal parameters (5wt% NaCl, 100 °C, 0.80g/cm³) yielded a modulus of elasticity of 4.59±0.26 GPa, modulus of rupture of 18.88±0.03 MPa, and internal bond strength of 3.92±0.18 MPa, representing increases of 200.32%, 130.65%, and 218.70%, respectively. Thickness swelling decreased to 2.13±0.43% (48.14%) and water absorption to 8.95±0.05% (32.25%). These findings confirm that NaCl treatment is an eco-friendly method to enhance the mechanical strength and moisture resistance of biofiber composites. It also supports the development of high-performance composite boards.
Surface Analysis of Bacterial Cellulose Membrane Made from Biowaste Added with ZnO Nanopowder Amasda, Naufal Rizky; Suryanto, Heru; Yanuhar, Uun; Aminnudin, Aminnudin; Nusantara, Fajar; Sias, Quota Alief
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 9, No 1 (2025)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v9i12025p281

Abstract

Utilization of pineapple biowaste is important to increase the value added to biowaste and solve the environmental problem. So, the study objective is to synthesize membranes of bacterial cellulose made from pineapple biowaste and characterize the surface morphology and porosity of the membrane after being added with ZnO nanopowder. The study starts with extracting biowaste as a bacterial cellulose culture medium for the fermentation process. The obtained pellicle was crushed and homogenized with the added ZnO nanopowder in the presence of ultrasonic waves. The membrane is dried in the oven. The membrane morphology was monitored using scanning electron microscope and Brunauer–Emmett–Teller analysis. Results indicate that surface morphology more rougher in line with increasing ZnO nanopowder content. The control membrane exhibits the highest surface area (36.9605 m²/g) due to its uninterrupted porous network. The addition of ZnO nanopowder at 2.5% significantly reduces the surface area to 2.9168 m²/g, likely due to nanoparticle-induced pore obstruction. As the ZnO nanopowder concentration increases to 5% and 7.5%, the specific surface area rises to 8.0436 m²/g and 13.7783 m²/g, respectively. This trend suggests that higher ZnO nanopowder loading enhances porosity and introduces additional adsorption sites. The control BC membrane exhibits the highest pore volume and well-defined mesoporosity, which are diminished upon the initial addition of ZnO nanopowder.
Sensor Fusion of Laser and Inertial Units with Kalman-KMeans-Fuzzy Framework for Real-Time Railway Geometry Monitoring Fikri, Ahmad Atif; Subhan, Muhammad Ferindin Nuha; Suryanto, Heru; Muhdi, Krisna Dwipa; Pratama, Daniel Febrian; Iqbal, Ahmad
Buletin Ilmiah Sarjana Teknik Elektro Vol. 7 No. 3 (2025): September
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/biste.v7i3.13780

Abstract

Maintaining railway track geometry integrity is essential to ensuring transportation safety and predictive maintenance. Conventional manual inspection methods are limited by low sampling frequency, subjective interpretation, and delayed anomaly detection. This study introduces a real-time, embedded monitoring system using VL53L0X infrared laser sensors and an MPU6050 IMU to measure gauge, cross-level height, and inclination. Sensors are mounted on a lightweight aluminum trolley and sampled every 0.5 seconds using an Arduino-based platform. A Kalman Filter reduces measurement noise, with tuned covariance matrices based on field calibration. Filtered outputs are clustered via K-Means (K = 2), validated by the Elbow Method and Silhouette Score (>0.6). Maintenance categories are assigned through a fuzzy logic system, with a ±1 mm sensitivity analysis confirming >85% decision stability. Field results demonstrate a measurement noise, achieving RMSE and MAE values of 0.8165 mm and 0.3175 mm for gauge and height, and 0.3086° and 0.0952° for inclination, respectively and a SNR gain from 0.5 dB to 21.7 dB. The low-cost, modular setup supports scalable, condition-based maintenance and demonstrates robustness in noisy environments. This approach offers a practical foundation for future integration with predictive analytics and digital twin technologies in smart rail infrastructure.
Food Security in Remote Disaster-Prone Prisons: a Case Study of Nusakambangan as an Integrative Model of Disaster Resilience and Prisoner Rehabilitation Suryanto, Heru; Sudarno, Kurnia Agung; Setiawibawa, Rachmat; Syahtaria, Moh Ikhwan; Uksan, Arifuddin
International Journal of Education, Vocational and Social Science Vol. 4 No. 04 (2025): September - November, International Journal of Education, Vocational and Socia
Publisher : Cita konsultindo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63922/ijevss.v4i04.2433

Abstract

This research focuses on analyzing food security in remote prisons that are potentially vulnerable to disasters, with a case study focus on Nusakambangan Island, Central Java. The issue of food security in correctional environments is important because Nusakambangan's isolated geographical conditions cause complete dependence on external logistics supplies, especially from sea routes. When extreme weather, emergency conditions or disasters occur, food distribution is often disrupted, so internal production strategies are needed to maintain supply continuity. This research uses a descriptive qualitative approach with a case study method and analyzes field data from several prisons on Nusakambangan, including the Open Prison, Nirbaya, Gladakan, Kembang Kuning, Karanganyar, and Pasir Putih.The research findings indicate that the development of agricultural, livestock, and fisheries activities on Nusakambangan serves a dual role: as a food security strategy and as a means of inmate rehabilitation. The Open Prison and Kembang Kuning Prison are the most advanced models of food diversification with various commodities, while Nirbaya Prison demonstrates innovative adaptation to rocky land through a terracing system. This research concludes that food security on Nusakambangan can serve as an integrative model between correctional policies and adaptive food systems. Key recommendations include the establishment of an integrated food management institution, increased cross-ministerial technical support, and the development of a sustainable storage system and training for inmates. With institutional strengthening and agricultural innovation, Nusakambangan has the potential to become a national laboratory for resilient, productive, and equitable correctional food security.
PENTAHELIX COLLABORATION STRATEGY IN REALIZING ZERO CONFLICT IN BANDUNG CITY TO ACHIEVE NATIONAL SECURITY Heru Suryanto; Junior Ternama Siahaan; Yusril Ihza Putra Supardi; Rachmat Setiawibawa; Moh Ikhwan Syahtaria; Arifuddin Uksan
Algebra : Jurnal Pendidikan, Sosial dan Sains Vol. 5 No. 4 (2025): Algebra : Jurnal Pendidikan Sosial dan Sains
Publisher : Yayasan Amanah Nur Aman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58432/qykdna62

Abstract

National security is no longer confined solely to military threats but has expanded to encompass social, economic, cultural, and political dimensions. Bandung City, as a multicultural and metropolitan area, faces challenges of social conflict arising from urbanization, inequality, and diverse identities. The zero-conflict approach emerges as a preventive strategy emphasizing early detection and the resolution of root social problems to foster stability and harmony. This study aims to explore how the pentahelix collaboration model engaging the government, academia, business sector, community, and media can be implemented to prevent and manage social conflicts in Bandung City and how it contributes to national security. Through literature review and empirical data analysis, this article demonstrates that the pentahelix collaboration effectively creates a responsive and inclusive social ecosystem. Programs such as the Integrated Team for Social Conflict Management (Timdu PKS), Conflict-Alert Neighborhood Units (RW Siaga Konflik), Harmony Villages (Kampung Kerukunan), and the Community Early Detection Forum (FKDM) exemplify multi-stakeholder engagement in early detection, mediation, and public education. The government acts as a regulator, academia provides data and scientific analysis, the business sector supports economic empowerment through CSR initiatives, communities serve as key actors in social mediation, and the media disseminates peace narratives. The findings reveal that the zero-conflict strategy through the pentahelix model not only contributes to local social resilience but also strengthens national stability both structurally and culturally. This model serves as a data-driven and cross-sectoral collaborative policy reference that can be replicated by other regions to achieve sustainable national security.
Co-Authors Abda Abda Adhitya, Dewa Sukma Trinanda Agung Prabowo Ahmad Atif Fikri Aisyah Larasati Ali, Alamry Amasda, Naufal Rizky Aminnudin, Aminnudin Andoko Andoko, Andoko Apri Supii Arbianto, Ferian Rizki Ardianto Prasetiyo Arifuddin Uksan Asus Maizar Suryanto H Avita Ayu Permanasari Bili Darnanto Susilo Binoj, Joseph Selvi Dyah Kinasih Wuragil Eddy Rudianto Faishol, Faishol Fakris Muslim Faqih Fadillah Fauliza, Tifa Gian Suryanatha Hartawan Gunanti Mahasri Herly Evanuarini Ismail, Mahrus Jibril Maulana Junior Ternama Siahaan Kris Witono M. Muhajir Malik Abdurrachman Marsono Marsono Masera, Kemal Mito, Mohamed T Moh Ikhwan Syahtaria Mufidah, Rhobithotus Muhamad Muhajir Muhamad Muhajir Muhamad Syaifuddin Muhammad Musa Muhammad Musa Muhammad Sumsanto Muhdi, Krisna Dwipa Murdanto, Putut Nanang Eko Wahyuningtiyas Nanang Eko Wahyuningtyas Nashrullah, Fikri Munif Navis, Akbar Nico Rahman Caesar Nusantara, Fajar Osman, Azlin Fazlina Pahlefi, Reval Panicker, Nithin Pradana, Yanuar Rohmat Aji Prasetya, Riduwan Pratama, Daniel Febrian Putra, Abyan Farras Rachmat Setiawibawa Ramadhan, Rahmad Ikrom Reddy .A. Dharmabintara Redyarsa Dharma Bintara Retno Wulandari Riyanto, Mochammad Deny Rizali, Dede Rr. Poppy Puspitasari Rudy Soenoko S.M.Shahrul N.S. Zahari Setyayunita, Tamaryska Sias, Quota Alief Subhan, Muhammad Ferindin Nuha Sudarno, Kurnia Agung Sukarni Sukarni Sukarni Sukarni Suprayitno Suprayitno Suprayitno Suprayitno Susilo, Bili Darnanto Syahtaria, Moh Ikhwan Tito Arif Sutrisno Uksan, Arifuddin Utari, Inpita Casuarina Eqisetia Wardani, Nezya Pramudya Wiguna, Chrisrulita Sekaradi Wuragil, Dyah Kinasih Yanuar. R. A. Pradana Yanuhar, Uun Yudy Surya Irawan Yusril Ihza Putra Supardi