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All Journal Jurnal Spektran Jurnal Energi Dan Manufaktur Rekayasa Mesin Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) Jurnal Teknik Mesin R.E.M (Rekyasa Energi Manufaktur) Jurnal Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin Journal of Energy, Mechanical, Material and Manufacturing Engineering Indonesian Journal of Chemistry Machine : Jurnal Teknik Mesin Journal of Applied Agricultural Science and Technology Jurnal Pengabdian Magister Pendidikan IPA Jurnal Mesin Nusantara Journal of Fibers and Polymer Composites Jurnal Karya Pengabdian Teknik Mesin Protech Biosystems Journal Indonesian Journal of Forestry Research
Nasmi Herlina Sari
Jurusan Teknik Mesin, Fakultas Teknik Universitas Mataram
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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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: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 2, No 1 (2012): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4288.132 KB)

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: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 1, No 1 (2011): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

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: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 3, No 1 (2013): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

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).
UJI FASTENING PADA KAYU KOMPOSIT SERAT PANDAN WANGI DAN LIMBAH KAYU DENGAN RESIN POLYESTER Sulistyowati, Emmy Dyah; Sari, Nasmi Herlina; Sinarep, S.; Pandiatmi, Pandri; Andrian, Insan
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 5, No 1 (2015): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

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Abstract

The purpose of this study was to obtain handling connection type in use as door panels, roofing sheets, walls and floors. Therefore, the tests performed are fastening test and abrasion test. The technique of making wood composite is using hand lay-up technique. Constituent material of board composite is using pandanwangifibers with length variationsare 15 mm, 20 mm, and 30 mm with volume fraction variations are 20% and 30%, and 5% Sengon tree saw-dust is used as the filler. The results showed that pre-drilling with fastener sizes # 6, # 8 and # 10 is 3.5 mm, 4 mm and 4,5mm. The distance between each fastener depends on the fastener head itself, ie fastener # 6, # 8, and # 10. Critical distance between the edge of the fastener has a significant effect on fiber length and volume fraction. The highest value is shown on 15 mm of the fiber length and 20% of volume fraction with the value 3.29 mm, and the lowest value is shown on 15 mm of the fiber length and 30% of volume fraction with the value 2.74 mm. 
Pemanfaatan Lamtoro Sebagai Pakan Ternak Dalam Mendukung Program Desa 1000 Sapi di Desa Pengengat, Kecamatan Pujut, Lombok Tengah Sutaryono, Yusuf Akhyar; Sukarne; Muhammad Edi Nasution; Yogi Prayudi; Namira Risqi Putri Muquita; I Gusti Bagus Indra Permana; Nasmi Herlina Sari; Baiq Tasya Carrisa; Ludia Margrith Suseray; Muhammad Subbanul Mujahiddin; Evelyn Carolina Sentosa; Baiq Elmaliana; Kiki Dewanti
Jurnal Pengabdian Magister Pendidikan IPA Vol 7 No 4 (2024): Oktober-Desember 2024
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v7i4.9825

Abstract

Program 1000 Desa Sapi berupaya meningkatkan populasi dan produktivitas ternak sapi guna mewujudkan swasembada daging dengan tujuan ketahanan pangan nasional. Salah satu desa yang masuk dalam program ini adalah Desa Pengengat, Kecamatan Pujut, Kabupaten Lombok Tengah. Desa Pengengat terdapat kandang kelompok Tandur Desi yang dibangun di Dusun Tempit. Desa Pengengat juga memiliki Kelompok Tani Ternak Tandur Desi yang mengelola kandang tersebut. Kelompok tani ternak tersebut memelihara sapi ternak dengan memberinya makan dengan pakan yang berupa campuran hijauan pakan dari lamtoro dan rumput odot. Akan tetapi, ketersediaan pakan masih menjadi permasalahan, sebab para peternak harus menghadapi kesulitan memenuhi kebutuhan pakan ternak terutama di musim kemarau. Hal ini dapat berpengaruh terhadap produktivitas sapi ternak. Di samping itu, ketersediaan pakan ternak yang belum terjamin dapat mengganggu upaya peningkatan populasi sapi ternak yang dapat menghambat agenda Program 1000 Desa Sapi. Dalam rangka mengatasi permasalahan tersebut maka dilakukanlah penanaman lamtoro di lahan dekat Kandang Tandur Desi di wilayah Dusun Tempit untuk menciptakan sumber pakan ternak mandiri. Dari upaya tersebut, peternak mendapatkan wawasan baru mengenai pentingnya menjaga kualitas dan ketersediaan pakan bagi sapi ternak, pembudidayaan dan perawatan lamtoro sebagai pakan ternak, serta pemanfaatan lamtoro sebagai pakan ternak. Dengan demikian, kelompok tani ternak dapat mandiri dalam hal ketersediaan pakan ternak sehingga dapat mendukung lancarnya Program 1000 Desa Sapi.
A Review: Peptide-Based Hydrogels Biomaterials: From Synthesis to Biomedical Applications Sari, Nasmi Herlina; Rivlan, Muhammad Zaidan Fadhlurrohman; Thiagamani, Senthil Muthu Kumar
Journal of Fibers and Polymer Composites Vol. 4 No. 1 (2025): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v4i1.241

Abstract

Peptide-based hydrogel biomaterials (BHP) have emerged as novel therapeutic platforms for biomedical applications, providing accurate, efficient, and regulated drug delivery. This review examines the design, characterization, production, and biomedical applications of BHP, emphasizing their potential benefits in biomedicine. Advances in peptide synthesis techniques have permitted the creation of hydrogels with customized physicochemical properties to satisfy specific biomedical needs. Furthermore, this review delves into BHPs' biomedical uses, focusing on their role in improving therapeutic responses, allowing for sustained drug release, and reducing tumor growth. BHPs, with their biocompatibility, programmable hydrogel production, and adaptability, constitute a viable technique for addressing the problems of ovarian cancer treatment. This paper gives a thorough summary of current achievements in BHP research, bridging the gap between material development and clinical applications.
THERMAL, MECHANICAL, AND MICROSTRUCTURE CHARACTERISTICS OF PAEDERIA FOETIDA FIBERS/CARBON POWDER HYBRID REINFORCED EPOXY COMPOSITES Sari, Nasmi Herlina; Suteja; Syafri, Edi
Indonesian Journal of Forestry Research Vol. 12 No. 1 (2025): Indonesian Journal of Forestry Research
Publisher : Association of Indonesian Forestry and Environment Researchers and Technicians

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59465/ijfr.2025.12.1.27-38

Abstract

Increased environmental and sustainability awareness has fueled efforts to develop bio-based composite materials for a wide range of end-use applications, as well as new alternatives to non-renewable synthetic fibers such as glass and carbon-reinforced composites. Considering development and research, Paederia foetida fiber stem (PFs) reinforced composites have recently generated a lot of interest. Hybrids of PFs with carbon powder (CP) have been explored in order to achieve the best properties for composites. This study focused on investigating the microstructural, mechanical, thermal, and density characteristics of hybrid reinforced epoxy composites made of CP/PFs. Several compositions of PFs and CP (30:0, 20:10, 15:15, 10:20, and 0:30 vol.), were prepared to manufacture composite using a hot press method. The effect of the volume fraction of carbon/PFs on the mechanical, thermal, and fracture structure properties of hybrid composites was examined. The findings showed that sample CDS20 which was made up of 20% PFs and 10% CP had the highest tensile strength (42.3 ± 2.7 MPa) and elastic modulus (2310.8 ± 91 MPa). It also had quite high thermal resistance properties with a residual charcoal content of about 23.8%. SEM analysis showed agglomeration of CP and the number of voids decreased as the volume fraction of PFs increased, and the interfaces between CP-PFs-epoxy appeared denser. For infrastructure applications, this composite may serve as an alternative to epoxy composites reinforced with sisal fiber.
Utilization of Pumpkin seed waste extract as an inhibitor in reducing the corrosion rate on metals Hidayatullah, Syarif; Sari, Nasmi Herlina; Huda, Ahmad Akromul; Pradityatama, Maharsa; Sinarep, Sinarep; suteja, suteja
Protech Biosystems Journal Vol 5, No 1 (2025): Protech Biosystem Journal
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/protech.v5i1.32116

Abstract

Our research focuses on enhancing the potential of pumpkin seed waste extract as a sustainable corrosion inhibitor for metal (Fe) in 1 M HCl solution. Phytochemical screening and antioxidant activity were identified. Various investigative methodologies including experimental techniques such as Potentiodynamic Polarization (PDP) were used to evaluate the effectiveness of these pumpkin seed waste extract inhibitors in inhibiting corrosion. Electrochemical results showed that the effectiveness of the inhibitor was concentration dependent here reaching 83.11% at 3000 g/L pumpkin seed waste extract inhibitor. The PDP showed that the mixed inhibition control effectively retarded the corrosion of the metal. Furthermore, the adsorption behavior of the pumpkin seed waste extract inhibitor onto the metal follows the Langmuir isotherm model with physisorption properties. The adsorption mechanism of the inhibitor on the metal surface successfully formed a protective film on the metal surface thereby reducing the corrosion rate.  
Efektifitas Perlindungan Korosi Aluminium Menggunakan Inhibitor Ekstrak Labu Kuning : Studi Elektrokimia dan Permukaan Syarif Hidayatullah; Nasmi Herlina Sari; Maharsa Pradityatama; Suteja
Jurnal Mesin Nusantara Vol 8 No 1 (2025): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v8i1.24651

Abstract

Penelitian kami berfokus pada peningkatan potensi ekstrak labu kuning sebagai penghambat korosi yang berkelanjutan untuk aluminium (Al) dalam larutan 1 M HCl. Skrining fitokimia dan aktivitas antioksidan diidentifikasi. Berbagai metodologi investigasi termasuk teknik eksperimental seperti Polarisasi Potensiodinamik (PDP) digunakan untuk mengevaluasi keefektifan inhibitor ekstrak labu kuning ini dalam menghambat korosi. Karakteristik permukaan Al yang terkorosi diperiksa dengan menggunakan kombinasi Scanning Electron Microscopy (SEM). Hasil elektrokimia menunjukkan bahwa efektivitas inhibitor bergantung pada konsentrasinya disini mencapai 82.28% pada 3000 ppm inhibitor ekstrak labu kuning. PDP menunjukkan bahwa kontrol inhibisi campuran secara efektif memperlambat korosi Al. Selanjutnya perilaku adsorpsi inhibitor ekstrak labu kuning ke Al mengikuti model isoterm Langmuir dengan sifat fisisorpsi. Analisis SEM lebih lanjut memverifikasi perubahan signifikan dalam morfologi permukaan dan kekasaran Al. Mekanisme adsorpsi dari inhibitor pada permukaan Al berhasil membentuk lapisan pelindung pada permukaan Al sehingga mengurangi laju korosi.
Characteristics Of Physical, Mechanical And Chemical Properties Of Cissus Sicyoides And Its Composites Apriandi, M. irawan; Sari, Nasmi Herlina; Sinarep, Sinarep
Protech Biosystems Journal Vol 5, No 1 (2025): Protech Biosystem Journal
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/protech.v5i1.32908

Abstract

This study aims to examine the characteristics of Cissus Sicyoides natural fibers extracted by two different methods, namely mechanical and boiling methods, and their application as reinforcing materials for epoxy resin-based composites. The characteristic of fibers was tested through physical and chemical properties, and fiber morphology, including tensile tests, FTIR, SEM and chemical composition. The results showed that the mechanical method produced fibers with higher tensile strength (431.41 MPa) and rougher surface structures, which support better mechanical bonding in the composite matrix. Meanwhile, the boiling method produced fibers with higher cellulose content (23.05%) and a cleaner and tidier surface. FTIR tests confirmed the presence of hydroxyl and carbonyl groups in both samples, while SEM results showed significant presence in the surface morphology and fiber cross-section. Composites made with fibers from the mechanical method had higher tensile strength (28.97 MPa) compared to composites from the boiling method (9.42 MPa). Overall, Cissus Sicyoides fiber has the potential as a composite reinforcing material with a mechanical extraction method that is superior in producing better mechanical performance. The findings of this study add to the use of local natural fibers as an alternative, ecologically friendly composite reinforcement for lightweight buildings.
Co-Authors Achmad - Zainuri Achmad Zainuri Achmad Zainuri Agil Trieanto Agus Dwi Catur Agus Dwi Catur Ahmad Safii Ahmad Syafruddin Zohri, Ahmad Ahmad Syafruddin Zohri, Ahmad Syafruddin Ahmad Taufan Ainun Asmawati Anindito Purnowidodo Anindya Aisyatur Amini Apriandi, M. Irawan Arif Mulyanto Arif Surya Darmawan D.P Arif Surya Darmawan, Arif Surya Arya Muliana Baiq Elmaliana Baiq Tasya Carrisa 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 Emmy dyah S 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 Fitriah H. Harsi, H. 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 Wirawan I Putu Krishna Artha Sastra I Putu Krishna Artha Sastra, I Putu Krishna Artha I.D.K. Okariawan IDK Okariawan, IDK IGNK Yudhyadi IGNK. Yudhyadi Insan Andrian, Insan Jauhar Fajrin Jauhar Fajrin Jauhari Muslim, Jauhari Kadriyan, Hamsu Karyanik, Karyanik Khan, Moonish Ali Kiki Dewanti Lalu Abdurrahman Wahid Lalu Tumbuh Prasetya Ludia Margrith Suseray M. Wirya Dirjan M. Wirya Dirjan, M. Wirya Maharsa Pradityatama Maryam Soleha Bahar Muhammad Ali Azmi Muhammad Edi Nasution Muhammad Rama Setiyadi Muhammad Subbanul Mujahiddin Muhammad Zaidan Fadhlurrahman Rivlan N. Nurchayati Namira Risqi Putri Muquita Nur Kaliwantoro Nurhasanah Nurhasanah Nurrochman Hartadi Dasrien Pandri Pandiatmi Pandri Pandiatmi Panji Saputra Anggara Paryanto Dwi Setyawan Pnadri Pandiatmi, Pnadri Pradityatama, Maharsa R.C. Lelio Retno Setyowati, Ety Risa Wardani Rivlan, Muhammad Zaidan Fadhlurrohman Rozan Hermansyah Rudy Sutanto S Sinarep, S S Sujita, S S. Sinarep, S. Saiful Askar, Saiful Salman Salman Salman Sanjay Mavinkere Rangappa Sari, Suteja Sinarep - Sinarep Sinarep Sinarep Sinarep Sinarep Sinarep Siti Zulaeha Sugiman Sugiman Sujita Sujita Sujita Sujita Sujita, Sujita Sukarne Sukarne Sutaryono, Yusuf Akhyar Suteja Suteja Suteja Suteja Suteja Suteja Suteja Suteja, Suteja Syafri, Edi Syarif Hidayatullah Syharul Syahrul . T Topan, T T. Topan, T. Thiagamani, Senthil Muthu Kumar Thiagamani, Sentil Muthu Kumar Ulfa Handayani Wibi Wahid Muharram Yayan Gunanto Yayat Indra Saputra Yogi Prayudi Yudi Ahmad Efendi Yusuf Ahyar Sutaryono Yusuf Akhyar Sutaryono Zahratul Laili