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All Journal Jurnal Spektran Jurnal Energi Dan Manufaktur SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin 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 Jurnal Agrotek UMMat SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Journal of Applied Agricultural Science and Technology Jurnal Pengabdian Magister Pendidikan IPA Jurnal Abdi Insani Jurnal Mesin Nusantara Mechanical Engineering for Society and Industry Jurnal Agro Dedikasi Masyarakat (JADM) Journal of Fibers and Polymer Composites Jurnal Karya Pengabdian Teknik Mesin Protech Biosystems Journal Indonesian Journal of Forestry Research
Nasmi Herlina Sari
Department Of Mechanical Engineering, Universitas Mataram, Mataram 83125, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering 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 Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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The Chemical and Water Sorption Properties of Chemically Modified Sesbania grandiflora and Leucaena leucocephala Fibers and Their Opportunities as Biocomposite Fillers Sari, Nasmi Herlina; Suteja, Suteja; Sutaryono, Yusuf Akhyar
Journal of Fibers and Polymer Composites Vol. 3 No. 1 (2024): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v3i1.146

Abstract

Researchers are interested in investigating the optimum features of Sesbania grandiflora fibers (SGs) and Leucaena leucocephala fibers (LLs) for application in a wide range of applications. The purpose of this study was to explore the effects of NaOH and bleaching on the chemical characteristics, density, moisture content, and functional groups of sesbania g. and leucaena l. fibers. SGs and LLs fibers were chemically changed in various ways, including alkalization with 5% NaOH for 2 hours and bleaching with sodium chlorite (NaClO2) and acetic acid (CH3COOH). The results of the study showed that the cellulose, lignin, and hemicellulose content of the modified fiber was generally lower than that of the raw fiber. This was explained by the hydrolytic agents NaOH and bleaching causing damage to the cellulose chains and bond modifications. It was discovered that NaOH treatment was more effective at removing lignin and hemicellulose components in addition to cellulose, based on the functional groups seen in FTIR spectra. After the alkali and bleaching processes, the water content of SGs/NaOH, LLs/NaOH, SGs/bleaching, and LLs/bleaching fibers was reduced to 5.4 ± 0.89 %, 6.23 ± 0.87 %, 7.12 ± 1.02 %, dan 0.22 ± 0.21 %, respectively. This is also because the fiber has a relatively high fiber density of between 0.2 and 0.3 g/cm3, which is caused by the loss of non-fiber substances that are linked to the fiber. The results show that PFs treated with bleaching, NaOH, and raw fibers have the potential to be used as fillers in biocomposites and as substitute materials for glass fiber in the textile industry.
A Review on Silver Nanoparticles Based Biomaterials for Bone Tissue Engineering and Medical Applications Sari, Nasmi Herlina; Rivlan, Muhammad Zaidan Fadhlurrohman; Suteja, Suteja; Kadriyan, Hamsu; Thiagamani, Sentil Muthu Kumar
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.92830

Abstract

Silver nanoparticles (AgNPs) are being studied extensively as nanostructures for novel and enhanced biomedical applications. Nanoparticles in bone grafts have been shown to speed up fracture healing by providing a finer structure for bone tissue engineering. They are known to have excellent antimicrobial properties due to their high surface-to-volume ratio and small particle size, without affecting the material's mechanical properties. AgNPs' distinct property makes them the preferred filler in a wide range of biomaterials, where they play an important role in enhancing properties. AgNP-containing biomaterials can be easily tailored to meet specific requirements in the development of bone tissue. Adjusting size, shape, composition, and surface charge can enhance their effectiveness in interacting with bone cells, promoting cell attachment, and delivering growth factors. Using AgNP-based biomaterials can help prevent or reduce the formation of biofilms. The utilization of these materials in bone tissue engineering has demonstrated potential in treating musculoskeletal conditions and bone traumas. They are versatile for various applications such as bone implants, scaffolds, wound dressings, and antibiotic delivery systems. This review will cover several special topics, including silver-based biomaterials, toxic properties, morphology and mechanical properties of silver-based biomaterials, and applications of silver-based biomaterials in medical applications.
Pemanfaatan Sisa Baja Ringan Sebagai Pembuatan Alat Pembakar Ikan: Pembuatan Alat Pembakar Ikan Herlinasari, Nasmi; Suteja, Suteja; Hidayatulah, Syarif; Sari, Nasmi Herlina; Sutaryono, Yusuf Akhyar
JURNAL KARYA PENGABDIAN Vol. 6 No. 2 (2024): ,Oktober
Publisher : Jurusan Teknik Mesin FT Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jkp.v6i2.187

Abstract

Used light steel is used extensively in construction projects and is only provided to collectors at a reduced cost. It is derived from the leftover light steel building components. The goal of this project is to make a grill out of the leftover light steel parts that will withstand heat better and be more valuable than it was previously. The grill's shape facilitates easy heat absorption by the cooked material. This fish grill is made by first gathering leftover light steel, then bending and attaching the steel to form the grill using bolts. The activity's outcomes demonstrate that the grill made from leftover light steel is capable of producing consistent heat, allowing the fish to be cooked to perfection without being overly dry or scorched on the outside. Light steel additionally has an excellent level of heat resistance at high temperatures, extending the tool's service life and, eventually, raising UMKM's earnings.
A Review: Fracture Structure of Natural Fiber Surface after Treatment with Various Alkali Chemicals Herlina Sari, Nasmi; Sari, Suteja; Sutaryono, Yusuf Akhyar; Khan, Moonish Ali
Journal of Fibers and Polymer Composites Vol. 3 No. 2 (2024): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v3i2.203

Abstract

Natural fibers, including both animal and plant fibers, have many applications in a variety of sectors, therefore knowing the effects of chemical treatments on their characteristics is critical. This study evaluates the impact of different chemical treatments, including silanes, acetylation, benzoylation, peroxides, and several coupling agents, including maleation. In addition, this paper discusses treatment using acrylation and acrylonitrile, stearic acid, sodium chlorite, oleoyl chloride, isocyanate, and permanganate. These treatments alter the surface structure of the fibers by changing their chemical composition and shape. Silane and coupling maleation chemicals typically increase fiber attachment to the polymer matrix, whereas acetylation and benzoylation frequently improve resistance to moisture and microbial attacks. Peroxide and permanganate can produce oxidation, which reduces fiber strength, but grafting acrylation, acrylonitrile, and isocyanate improves resistance and temperature stability. Stearic acid and oleoyl chloride increase hydrophobicity, whereas sodium chlorite treatment alters the lignocellulose structure, increasing density and strength. This study also examines the impacts of biological treatment with fungi, that may change fiber structure via biodegradation pathways. This study's findings shed light on how various chemical treatments might alter the durability and strength of natural fibers, and also their use in industry and material technology.
Exploring the Impact of Sound Dampening Materials on Maritime Workers' Knowledge and Attitudes Towards Noise-Induced Hearing Loss: A Literature Review Muhammad Zaidan Fadhlurrahman Rivlan; Yudhanto, Didit; Retno Setyowati, Ety; Herlina Sari, Nasmi
Journal of Fibers and Polymer Composites Vol. 3 No. 2 (2024): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v3i2.206

Abstract

Effective mitigation strategies are necessary because high noise levels in maritime work situations frequently represent serious threats to hearing health. Acoustic panels and sound absorbers are examples of sound-dampening materials that are used to lower noise levels; nevertheless, it is unclear how these materials affect employees' awareness and attitudes. The purpose of this study is to investigate how the usage of sound-absorbing materials affects the attitudes and understanding of marine personnel about noise-induced hearing loss (NIHL). The study also covers ship personnel' attitudes toward NIHLs, their understanding of NIHLs, and their hazards. The strategies for increasing ship employees' understanding of and attitudes toward NIHL, the impact of sound-dampening materials on their knowledge and attitudes toward NIHL, and the effectiveness of NIHL awareness and training programs are also covered. While the majority of marine workers are knowledgeable that noise can lead to hearing loss, the review's findings show that their understanding of the causes and long-term consequences of NIHL is insufficient. Diverse perspectives exist regarding prevention, and several employees find it awkward to wear hearing protection. Sound-absorbing materials facilitate better communication and teamwork among employees, which can raise satisfaction at work and safety awareness while lessening the disruption caused by excessive noise. Moreover, employing hearing protection devices (HPPs) can raise staff members' awareness of NIHL and motivate them to utilize HPPs more proactively. These results provide recommendations for more potent preventive measures as well as significant insights into occupational safety and health regulations in the maritime sector.
PENGARUH PREHEAT DAN TEMPERING TERHADAP KEKERASAN DAN STRUKTUR MIKRO HASIL PENGELASAN BAJA JIS SS 400 Askar, Saiful; Sinarep, S.; Sari, Nasmi Herlina
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (621.671 KB)

Abstract

JIS steel SS 400 is one of the most common types of steel used for hot rolling steel structures general. This steel is excellented to the weldability and machinability properties. This study aimed to determine the effect of heat treatment with preheating without tempering (PTT), with preheating and tempering (PT), without preheating and without tempering (TPTT), and  without preheating tempering (TPT). The test results are then compared with the raw material specimens. Method of forming specimens using welding SMAW (Shielded Metal Arc Welding) DC reverse polarity using E7018 type electrode diameter of 4 mm. Type of seam used is V open seam with slit width and height of 2 mm and the width of the root angle 70o. This studied used a low alloy steel (JIS steel SS 400) which contain high levels of 0.20% C, maximum 0.005% S, maximum 0.005% P with repetitions each variation three times. Tests conducted it has testing the tensile strength, brinell hardness testing, and microstructure photo shoot. Value of the brinell hardness of welded joints highest in the tempering specimens without preheating, amounting with  163,911 HB hardness value. The structure of cementite and pearlite formed. While the lowest hardness values of specimens owned by raw material is 120,498 HB hardness values that form the microstructure of pearlite and ferrite. 
Pengaruh Panjang Serat Dan Fraksi Volume Serat Pelepah Kelapa Terhadap Ketangguhan Impact Komposit Polyester Sari, Nasmi Herlina; Zainuri, Achmad; Wahyu, Fitratul
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 1, No 2 (2011): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (246.106 KB)

Abstract

Composite has alone top to be compared with alternative's tech material any other as strong, demulcent, bate corrosion, economic etcetera.  The aim of this research is to investigate the influence of fiber length and fiber volume composition coconut frond to tensile strength step-up and toughness impact composite is coconut frond fiber with matrix resin   polyester   This research utilizes fiber length variation 2 cm, 4 cm, 6 cm and fiber volume variations 5%, 10%, 15%. composite lasing utilizes resin polyester  composite makings done at random with fiber compare and resin 100%. Fiber conduct is done with soak fiber up to 1 hour with NaOH solution as much 4%. composite makings process by method hand lay up  with emphasis manually utilize glass as printed as and depressing.   That result showed for fiber length 2 cm, 4 cm, and 6 cm gotten by supreme tensile strengths on long fiber 6 cm which is 27.5503216 N/mm2 and tensile strength is contemned available on fiber length 2 cm which is 16.80040936 N/mm2  and on fiber volume 5%,10%, and 15% supreme tensile strengths on volume fiber 15%, which is 28.49020468 N/mm2 and tensile strength is contemned available on volume 5%, which is 16.80040936 N/mm2. Toughness impact  supreme for fiber length 2 cm, 4 cm, and 6 cm happens on fiber length 2 cm with volume variation 10% which is 4087.5 Kj/m2 and on fiber volume 5%,10%, and 15% gotten by toughness impact  supreme available on volume 10% with longing fiber 6 cm which is, 4087. 5 Kj/m2
PEMANFAATAN SERBUK TEMPURUNG KELAPA PADA KOMPOSIT Al2O3-EPOXY Syafruddin Zohri, Ahmad; Sari, Nasmi Herlina; Sujita, S.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 3, No 2 (2013): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (148.808 KB)

Abstract

The purpose of this research is utilization of coconut shell powder on Al2O3-Epoxy composite so it can be used as an alternative material of brake linings that are enviromentlly friendly. In this research, coconut shell powder is used as a filler on Al2O3-Epoxy composites that are made using hand lay up method. Comparison volume fraction of coconut shell powder and Al2O3 was varied amount 0:40, 10:30, 20:20, 30:10 and 40:0 (%). Adhesive was used is epoxy resin namely amount 60%. Test conducted is wear test. The results showed that utilization of coconut shell powder on Al2O3-Epoxy can be decrease the wear so it can be used as an alternative material of brake linings that are environmentally friendly
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (439.752 KB)

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.
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