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PENGARUH PANJANG SERAT DAN FRAKSI VOLUME TERHADAP KEKUATAN IMPACT DAN BENDING MATERIAL KOMPOSIT POLYESTER- FIBER GLASS DAN POLYESTER-PANDAN WANGI Sulistyowati, Emmy Dyah; Sari, Nasmi Herlina; Yudhyadi, IGNK; Sinarep, S.; Topan, T.
Dinamika Teknik Mesin Vol 2, No 1 (2012): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

At this research by using two kinds of composite that is composite of fibre of screw pine of fragrant and composite of glass fibre. And in doing research will be done by two examination type that is test the strength bending and test the strength impact. How strength from two composite type of examinee with the long variation  and fibre volume to be used.As the result test the strength of impact and bending to be composite of screw pine of fragrant with the long variation of fibre with the random fibre direction that composite highest strength impact of fibre of screw pine of fragrant got at fibre length 5 cm of equal to 2286,67 singk / m². while for the variation  of volume of highest strength impact fibre there are at fibre volume 40% with the unidirectional fibre direction equal to 2940 Kj / m². While to result of composite strength bending test of screw pine of fragrant got by biggest strength bending with the long variation of fibre with the direction of fibre random, gotten at fibre length 5 cm of equal to 146,67 KN . while for the strength of bending with the variation of fibre volume with the unidirectional fibre direction, highest strength bending got at fibre volume 40% equal to 236,67 KN. Medium to result of composite strength impact test of glass fibre at long variation of highest strength fibre got at length seart 5 cm of equal to 5553,33 Kj / m². While strength impact with the variation of biggest strength fibre volume at fibre volume 40% with the unidirectional fibre direction equal to 15908,67 Kj / m². Medium at composite strength bending test of glass fibre with the long variation of fibre  where fibre direction is random of biggest kerkutan bending at fibre length 5 cm of equal to 263,33 KN. while to result of kekutan bending  at variation  of fibre volume got by biggest strength bending at fibre volume 40% equal to 278,34 KN.
ANALISA KEKUATAN BENDING KOMPOSIT EPOXY DENGAN PENGUATAN SERAT NILON Sari, Nasmi Herlina; Sinarep, S.
Dinamika Teknik Mesin Vol 1, No 1 (2011): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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The development of composite materials in the field of engineering is increasingly being used. This is because of its properties are superior compared to conventional materials, as the ratio between strength and density are quite high, stiff, the manufacturing process is very simple and resistant to corrosion and fatigue loads. The purpose of this study was to determine the effect the addition of nylon fibers with Epoxy Matrix on the increase in bending strength of epoxy composites.  The objected of this study was the composite of nylon fiber, which is cut 12 mm nylon fiber with epoxy resin as a fastening material. Before performing an experiment testing the tensile fibers has done and known to the stress of 461.22 MPa. There are 3 variations of volume fraction In this experiment, those are volume fraction of 40%, 50%  and  60%, with 3 variation each.  Method in the manufacture of specimens with the way the mould press. Tools to test the specimen is bending test machine (servopulser). Specimens using a standard test of ASTM C 393-94. Bending test results showed that the nylon fiber composite with fiber volume fraction 40% stress of 787.16 MPa, modulus of elasticity of 1.06 GPa, volume fraction of 50% the stress of 902.01 MPa, modulus of elasticity of 1.08 GPa, and for 60% volume fraction of the stress of 950.02 MPa, modulus of elasticity of 0.99 GPa.
ANALISIS SIFAT KEKUATAN TARIK DAN KEKUATAN BENDING KOMPOSIT HIBRYD SERAT LIDAH MERTUA DAN KARUNG GONI DENGAN FILLER ABU SEKAM PADI 5% BERMATRIK EPOXY Muslim, Jauhari; Sari, Nasmi Herlina; Sulistyowati, Emmy Dyah
Dinamika Teknik Mesin Vol 3, No 1 (2013): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract The use of composite materials is growing at over the development of manufacturing industry. Composites sansevieria and hibiscus canabinus with the addition of rice husk ash filler. The purpose of this study was to analyze the tensile strength and bending strength of hybrid composites sansevieria and hybiscus canabinus with rice husk ash filler epoxy bermatrik with random fiber direction.Variation of fiber volume fraction sansevieria and hybicus canabinus is 0%:35%,10%:25%, 15%:10%, 20%:15%, 25%:10%, 35%:0%. Method for making composite specimens in the form of hand lay up with a fiber length of 2cm. Testing was done by bending test following the ASTM standard D790 tensile test and ASTM D3039 standards.The results showed that the composites with rice husk ash fillers higher bending strength and the strength of its appeal compared to the composite without using rice husk ash fillers, where the highest bending strength on volume fraction 0%/35% as big as 32,00 MPa (using filler), and kekutan lowest bending the volume fraction 0%/35% as big as 21, 69 Mpa (without filler). While the tensile test has the highest power in the volume fraction 15%/20% as big as 8,24 MPa (using filler), and the lowest tensile strength on volume fraction 0%/35%  as big as 3,43 MPa (without filler).
Extraction and isolation of microcellulose from nunang tree (cordia dichotoma) stem fibers Suteja, Suteja; Sari, Nasmi Herlina; Pradityatama, Maharsa
Jurnal Agrotek Ummat Vol 12, No 4 (2025): Jurnal Agrotek Ummat: Oktober
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jau.v12i4.35596

Abstract

Mikro serat (holoselulosa) dari serat batang pohon nunang memiliki karakteristik mekanik, ketahanan panas yang baik dan densitas ringan sehingga cocok untuk material kemasan hasil pertanian (biokomposit). Lembaran serat nunang diperoleh dengan merendam kulit batang nunang dalam air dan dipotong ±1 cm untuk diblender, dan dilanjutkan proses pengayakan 40 mesh. Serat makro nunang kemudian diputihkan dengan larutan NaClO2 5% dan dimerserisasi dengan larutan NaOH 9% pada suhu 65 °C dan kecepatan 500 rpm selama 2 jam di atas magnetic stirrer. Hasil uji FTIR mengungkapkan telah hilangnya serapan pada bilangan gelombang 2026–1698 cm-1 yang merupakan indikasi hilangnya senyawa lignin, hemiselulosa, lilin dan senyawa pengotor lainnya. Pengujian difraksi sinar-X (XRD) menunjukkan niilai indeks kekristalan yang lebih tinggi setelah perlakuan kimia NaClO2 dan NaOH, sementara itu pengamatan foto SEM menunjukkan fitur permukaan yang lebih kasar sebagai tanda larutnya material pengotor. Setelah perlakuan kimia serat mikro juga mengindikasikan ketahanan termal yang lebih tinggi. Penelitian ini menunjukkan bahwa serat mikro nunang setelah perlakuan kimia memiliki potensi untuk industri kemasan hasil pertanian seperti film transparan ataupun bioplastik.
PELATIHAN MEMBUAT ECOBRICK UNTUK GENERASI MUDA DALAM MENINGKATKAN KEPEDULIAN KEBERSIHAN LINGKUNGAN DI PEDESAAN Hidayatullah, Syarif; Suteja, Suteja; Huda, Ahmad Akromul; Sari, Nasmi Herlina; Tawaqqal, Akbar
Jurnal Abdi Insani Vol 12 No 10 (2025): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v12i10.2872

Abstract

The issue of plastic waste in rural communities has become an urgent environmental concern due to limited waste management facilities and low public awareness of the impacts of plastic pollution. The massive use of plastics without proper disposal systems has led to the accumulation of waste that contaminates the environment. One practical and educational solution that can be implemented is the production of ecobricks, which involves processing plastic waste into environmentally friendly building materials. This activity aimed to enhance the knowledge, awareness, and skills of young people aged 10–16 years in Ambung Village, East Masbagik District, in managing plastic waste through ecobrick-making training. The implementation method consisted of three stages: socialization, training, and evaluation. The socialization stage involved an interactive lecture on the dangers of plastic waste, followed by hands-on practice in making ecobricks using used plastic bottles. Evaluation was conducted using pre-test and post-test instruments to measure participants’ understanding of the reduce, reuse, recycle (3R) concept. The results showed a significant increase in participants’ knowledge levels, with an average pre-test score of 51.5 and a post-test score of 84.5, representing an improvement of 63.4%. Participants gained a better understanding of plastic waste management processes, were able to produce ecobricks independently, and were motivated to apply this knowledge at home while encouraging family members and peers to participate. Moreover, the activity fostered a sense of collaboration and creativity among participants by transforming plastic waste into functional products such as flower pots and garden benches. It can be concluded that ecobrick-making training effectively increased ecological awareness, knowledge, and practical skills among young people in plastic waste management, serving as an initial step toward a cleaner and more sustainable village environment.
Peningkatan Pemahaman Cara Kerja Solarcell Dan Pemanfaatan Energi Matahari Untuk Penerangan di SMKN 1 Selong Kabupaten Lombok Timur NTB Mulyanto, Arif; Herlina Sari, Nasmi; Syahrul; Sinarep; Lalu Wahyu Alam
JURNAL KARYA PENGABDIAN Vol. 7 No. 2 (2025): Oktober, Jurnal Karya Pengabdian
Publisher : Jurusan Teknik Mesin FT Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jkp.v7i2.210

Abstract

Electricity has become an inseparable part of life's necessities along with the rapid development of technology, industry and information. The reduction in fossil energy sources and increasing awareness of preserving the environment requires us to look for alternative energy from renewable energy sources. The use of solar energy as a renewable energy source in NTB has not been widely used. This counseling was carried out at SMKN 1 Selong with the aim of introducing solar energy. Solar energy produced by solar panels is converted into electricity. Electricity is stored by the battery through a charging regulator (SCC). The battery can be used to power AC lights using an inverter. The length of use time depends on the amount of lamp power and battery power. Maintenance carried out regularly: 1. Clean the solar panels from dust or dirt. 2. Check the battery water level. Work safety is highly recommended when carrying out maintenance by turning off the MCB switch while the solar panels are being maintained.
Effect of calcination temperature on the thermo-structural behavior and morphology of natural clay for eco-friendly composite applications Edi Syafri; Salman Salman; Jamaluddin Jamaluddin; Nasmi Herlina Sari; Suteja Suteja
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.14144

Abstract

Natural clay is a low-cost and abundant material with potential as a sustainable filler in composite applications. Although natural clay has been widely explored as a sustainable filler material, systematic studies correlating calcination temperature with simultaneous thermal, structural, and morphological evolution remain limited. This study aims to evaluate how different calcination temperatures affect the thermal, structural, morphological, and physical properties of natural clay to determine its suitability for eco-friendly composite use. Clay powders were thermally treated at 600 °C (CCB), 700 °C (CCG), and 800 °C (CCM), and comprehensively characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and physical testing. The results indicate that increasing calcination temperature significantly enhances crystallinity, and thermal stability, with the CCM sample (800 °C) exhibiting the most pronounced improvements. The CCM sample, calcined at 800 °C, exhibited the highest crystallinity index (72%), the lowest water absorption, the most compact microstructure, and the highest bulk density (6100 ± 40 kg/m³). TGA revealed improved thermal resistance up to 600 °C, with increasing char residue values from 38.2% (raw) to 48.2% (CCM), indicating enhanced thermal stability. FTIR analysis confirmed the reduction of hydroxyl and carbonate groups, particularly in the CCM sample. SEM observations showed a transformation from porous, irregular morphologies in raw clay to dense and homogeneous particles after calcination. These findings confirm that high-temperature calcined clay, especially the CCM sample, presents excellent potential as a sustainable filler material for high-performance green composites.
Penerapan teknologi tepat guna pada kelompok tani Desa Setanggor, Kabupaten Lombok Tengah Suteja Suteja; Nasmi Herlina Sari; Sujita Sujita; Rudy Sutanto; Ida Bagus Alit; Syarif Hidayatullah; Ahmad Akromul Huda
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 10, No 3 (2026): June
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v10i3.39015

Abstract

AbstrakKelompok tani sinar harapan memiliki permasalahan perawatan padi berupa biaya dan waktu semprot padi yang terus meningkat. Melalui program Pengabdian Kepada Masyarakat (PKM) ini dihasilkan dan diberikan alat semprot kepada kelompok tani sinar harapan di desa Setanggor sebagai upaya untuk meningkatkan dan mempermudah dalam penyemprotan padi oleh para petani. Oleh karena itu, hal ini menjadi isu yang perlu diselesaikan dalam peningkatan hasil pertanian. Mesin alat semprot ini didesain dan dibuat untuk mengatasi permasalahan seperti mempermudah dan mempercepat semprot padi. Selain pembuatan dan serah terima alat semprot, pelatihan pengoperasian, dan perawatan mesin dilakukan secara Bersama-sama dengn masyarakat dan tim pengabdian dalam program ini. Hasil pengabdian menunjukkan bahwa waktu semprot dan proses semprot pada padi lebih cepat, sehingga mengurangi biaya untuk upah yang dikeluarkan petani. Terlebih lagi, para petani di kelompok tani sinar harapan sudah melewati usaha produktif. Sehingga program ini sangat membantu para petani. Diharapkan program keberlanjutan pada alat yang berbeda lainnya untuk mendukung kemandirian para petani. Kata kunci: alat semprot; kelompok tani sinar harapan; pengabdian kepada masyarakat. Abstract The Sinar Harapan Farmers’ Group faces challenges in rice cultivation, specifically the rising costs and time required for rice spraying. Through this Community Service Program (PKM), a sprayer was developed and provided to the Sinar Harapan Farmers’ Group in Setanggor Village as an effort to improve and streamline rice spraying for farmers. Therefore, this issue must be addressed to increase agricultural yields. This sprayer was designed and built to address issues such as simplifying and speeding up rice spraying. In addition to the construction and handover of the sprayer, training on operation and machine maintenance was conducted jointly with the community and the service team as part of this program. The results of the community service initiative show that the spraying time and process for rice are faster, thereby reducing labor costs for farmers. Furthermore, farmers in the Sinar Harapan farming group have already achieved productive outcomes. Thus, this program is highly beneficial to farmers. It is hoped that sustainable programs involving other types of equipment will be implemented to support farmers’ self-reliance. Keywords: community service; sinar harapan farmers' group; sprayer.
SOSIALISASI PERAN TEKNOLOGI MESIN SPRAYER KEPADA PETANI GUNA MENDUKUNG SWASEMBADA PANGAN suteja suteja; Nasmi Herlina Sari; Sujita Sujita; Rudy Sutanto; Ida Bagus Alit; Syarif Hidayatullah; Ahmad Akromul Huda
Jurnal Agro Dedikasi Masyarakat (JADM) Vol 7, No 1 (2026)
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jadm.v7i1.39213

Abstract

Community service program (PKM) aimed at raising awareness of the role of sprayer technology among the Sinar Harapan Farmers’ Group in Setanggor Village, Central Lombok Regency, has been successfully implemented. This PKM activity aims to improve the community’s understanding and ability to apply sprayer technology. The PKM was implemented in four stages: activity preparation, including identification and inventory; implementation of the PKM through outreach and practical training; and finally, evaluation and program sustainability. The results of this PKM indicate that the community is able to understand and apply sprayer technology to improve the efficiency of the rice spraying process for farmers. The results of the pre-test and post-test also showed a significant improvement, indicating that the partners—the Sinar Harapan farmer group in Setanggor Village, Central Lombok Regency—understand and are able to implement rice sprayer technology to achieve food self-sufficiency.
A comprehensive review of silicon-based composite materials for wind and hydropower applications: Properties, performance, and industrialization barriers Nasmi Herlina Sari; Sulhaini; Muhammad Nabil Fadhlurrohman Rivlan; Senthil Muthu Kumar Thiagamani; Ahmad Ilyas Rushdan; Catalin Iulian Pruncu
Mechanical Engineering for Society and Industry Vol. 6 No. 2 (2026): Issue in Progress
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.16039

Abstract

Silicon-based composites (SBC) are gaining popularity as sophisticated materials for renewable energy systems that operate under harsh mechanical, thermal, and environmental conditions. This research presents a critical and comparative evaluation of SBC for wind and hydropower applications by combining quantitative performance data, component-level viability, and industrialization problems such as scalability and cost considerations. Reinforcement topologies ranging from particle and short fibers to continuous, along with essential processing techniques such as chemical vapor infiltration, melt infiltration, polymer infiltration and pyrolysis, and new additives. The fundamental mechanical, thermal, tribological, and chemical durability qualities are examined in terms of the predominant deformation, damage, and degradation mechanisms. The performance of SBC under actual service conditions—such as cyclic loading, erosion-corrosion, cavitation, and harsh environments—is examined and compared to traditional glass- and carbon-fiber-reinforced polymer composites. Aside from technical features, the review is unusual in that it includes industrialization and commercialization views, identifying scale-up impediments, quality control issues, and technology-market misalignments that prevent acceptance. To connect material-level advantages with system-level benefits, business model archetypes and risk-sharing techniques are thoroughly evaluated. This study frames silicon-based composites as high-performance materials for next-generation wind and hydroelectric infrastructure, as well as strategic directions for accelerating their industrial application.
Co-Authors Achmad - Zainuri Achmad Zainuri Achmad Zainuri Achmad Zainuri Agil Trieanto Agus Dwi Catur Agus Dwi Catur Ahmad Akromul Huda Ahmad Akromul Huda Ahmad Ilyas Rushdan Ahmad Safii Ahmad Syafruddin Zohri, Ahmad Ahmad Syafruddin Zohri, Ahmad Syafruddin Ahmad Taufan Ainun Asmawati Anindito Purnowidodo Anindya Aisyatur Amini Arif Mulyanto Arif Mulyanto, Arif Arif Surya Darmawan D.P Arif Surya Darmawan, Arif Surya Arya Muliana Baiq Elmaliana Baiq Tasya Carrisa Catalin Iulian Pruncu Dahlanuddin Denda Ayu Febriani Riaz Putri Dewa Gede Pertama Putra Dewa Gede Pertama Putra, Dewa Gede Pertama Dhea Amalia Didit Yudhanto Difa Salsabila Fakhrunnisa Dimas Juniarto Dina Muliyani Djarot B. Darmadi, Djarot B. Dwi Setyawan Edi Syafri Edi Syafri Emmy dyah S Emmy Dyah Sulistiowaati Emmy Dyah Sulistyawati, Emmy Dyah Emmy Dyah Sulistyowati Emmy Dyah Sulistyowati Emmy Dyah Sulistyowati Emmy Dyah Sulistyowati, Emmy Dyah Evelyn Carolina Sentosa Fitratul Wahyu, Fitratul Fitri Febrianti Gunawan Refiadi H. Harsi, H. Harjono Herlinasari, Nasmi Hidayatulah, Syarif Huda, Ahmad Akromul Huriyani I Gede Widiartha I Gede Widiartha, I Gede I Gusti Bagus Indra Permana I Kade Wiratama I Made Suartika I Made Wirawan I Putu Krishna Artha Sastra I Putu Krishna Artha Sastra, I Putu Krishna Artha I Putu Lokantara I.D.K. Okariawan Ida Bagus Alit IDK Okariawan, IDK IGNK Yudhyadi IGNK. Yudhyadi Insan Andrian, Insan Jamaluddin Jamaluddin Jauhar Fajrin Jauhar Fajrin Jauhari Muslim, Jauhari Joni Iskandar Kadriyan, Hamsu Karyanik, Karyanik Khan, Moonish Ali Kiki Dewanti Lalu Abdurrahman Wahid Lalu Tumbuh Prasetya Lalu Wahyu Alam Ludia Margrith Suseray M. irawan Apriandi M. Wirya Dirjan M. Wirya Dirjan, M. Wirya Maharsa Pradityatama Mardiansyah Maryam Soleha Bahar Muhammad Ali Azmi Muhammad Edi Nasution Muhammad Nabil Fadhlurrohman Rivlan Muhammad Nabil Fadhlurrohman Rivlan Muhammad Rama Setiyadi Muhammad Subbanul Mujahiddin Muhammad Zaidan Fadhlurrahman Rivlan Muji Setiyo N. Nurchayati Namira Risqi Putri Muquita Nur Kaliwantoro Nurhasanah Nurhasanah Nurpatria Nurpatria Nurrochman Hartadi Dasrien Pandri Pandiatmi Pandri Pandiatmi Panji Saputra Anggara Paryanto Dwi Setyawan Pnadri Pandiatmi, Pnadri Putu Lokantara R.C. Lelio Ragil Widyorini Retno Setyowati, Ety Risa Wardani Rivlan, Muhammad Nabil Fadhlurrohman Rivlan, Muhammad Zaidan Fadhlurrohman Rozan Hermansyah Rudy Sutanto S Sinarep, S S Sujita, S S. Sinarep, S. Saiful Askar, Saiful Salman Salman Salman Salman Salman Salman Salman Salman Sanjay Mavinkere Rangappa Sari, Suteja Senthil Muthu Kumar Thiagamani Sinarep Sinarep - Sinarep Sinarep Sinarep Sinarep Sinarep Sinarep Sinarep Sinarep Sinarep Sinarep Siti Zulaeha Sugiman . Sujita Sujita Sujita Sujita Sujita Sujita Sujita Sujita Sujita Sujita Sujita, Sujita Sukarne Sukarne Sukarne Sulhaini Sutaryono, Yusuf Akhyar Suteja Suteja Suteja Suteja Suteja Suteja Suteja Suteja Suteja Suteja Suteja Suteja Suteja Suteja Suteja Suteja Suteja Suteja Suteja, Suteja Syafri, Edi Syahrul Syarif Hidayatullah Syarif Hidayatullah Syarif Hidayatullah Syarif Hidayatullah Syharul Syahrul . T Topan, T T. Topan, T. Tawaqqal, Akbar Thiagamani, Senthil Muthu Kumar Thiagamani, Sentil Muthu Kumar Topan Gusti Wibowo Ulfa Handayani Wibi Wahid Muharram Yayan Gunanto Yayat Indra Saputra Yesung Allo Padang Yogi Prayudi Yudi Ahmad Efendi Yusuf Ahyar Sutaryono Yusuf Akhyar Sutaryono Yusuf Akhyar Sutaryono Yusuf Akhyar Sutaryono Sutaryono Zahratul Laili