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All Journal Journal of Fibers and Polymer Composites JURNAL KARYA PENGABDIAN TEKNIK MESIN
Nasmi Herlina Sari
University of Mataram
Automotive Engineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Influence of Pumice Particles on the Mechanical and Morphology Properties of Polyester-Cornhusk Fiber Composites Nasmi Herlina Sari; Suteja Suteja; I Putu Lokantara; Topan Gusti Wibowo
Journal of Fibers and Polymer Composites Vol. 1 No. 2 (2022): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (724.561 KB) | DOI: 10.55043/jfpc.v1i2.54

Abstract

The purpose of this study was to look into the performance of a cornhusk fiber (CHF) reinforced polyester composite with pumice powder (PP) as a filler. The influence of varied PP volume fractions on composite tensile, bending, impact, and fracture morphology was studied. Using the hot press process, polyester-CHF composites with varied volume fractions of PP filler, namely 5%, 10%, 15%, 20%, 25%, and 30% wt, were created. The results showed that increasing the PP volume fraction from 5% to 15% enhanced the tensile strength of the polyester-CHF composite. The modulus of elasticity and bending modulus tend to grow when filler Pp decreases from 5% to 30%, but elongation value decreases. Furthermore, the best bending strength and impact toughness of the polyester-CHF composite were produced at a volume fraction of PP filler of 20%. SEM images indicate the presence of CHF pull out in all composite variations as well as the number of voids dependent on the PP filler volume.
Aplikasi Alat Tanam Padi di Dusun Ketapang Kecamatan Lingsar Sujita Sujita; Nasmi Herlina Sari; Achmad Zainuri; Sinarep Sinarep; I Made Suartika
JURNAL KARYA PENGABDIAN Vol 4, No 1 (2022): April, Jurnal Karya Pengabdian
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2264.944 KB)

Abstract

Kemajuan pembangunan pertanian di Propinsi Nusa Tenggara Barat terlihat sangat pesat. Daerah dengan sebutan Bumi Gogo Rancah (GORA) kini menjadi lumbung pangan nasional. Propinsi ini merupakan penyumbang produksi pangan baik padi, jagung, kedelai, bawang merang, cabai, sapi, serta menyusul tebu. Untuk wilayah  Kabupaten Lombk Barat,  yang merupakan sumber penghasil padi terbesar adalah Dusun Ketapang, Desa Gegerung, Kecamatan Lingsar, tepatnya pada kelompok tani (Poktan) Pade Angkat. Kendala utama budidaya padi adalah penanaman secara manual, yang menyebabkan waktu penanaman benih padi lama menyebabkan biaya  budidaya padi meningkat signifikan. Penggunaan alat tanam padi sebagai pemecahan masalah, mampu meningkatkan efisiensi waktu sekitar 84,30% sehingga dapat  menghemat tenaga kerja sebesar 92,5%, sekaligus mengurangi biaya tanam sekitar 33,3%
Aplikasi Alat Penetas Telur Kontrol Suhu dan Kelembaban di Desa Batu Tulis Kecamatan Jonggat Lombok Tengah Sujita Sujita; Nasmi Herlina Sari; Sinarep Sinarep; Achmad Zainuri; Nur Kaliwantoro
JURNAL KARYA PENGABDIAN Vol 4, No 2 (2022): Oktober, Jurnal Karya Pengabdian
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1257.485 KB)

Abstract

Desa Batu Tulis Kecamatan Jonggat Kabupaten Lombok Tengah dikenal  sebagai petani dan peternak itik gamel. Ciri khas telur itik gamel warna telur putih dan besar. Telur asin asal Desa Batu Tulis merupakan produk unggulan, oleh-oleh khas Lombok yang paling banyak dicari oleh wisatawan baik wisatawan lokal maupun mancanegara. Karena rasa dan tekstur kuning telur itik yang khas dan bentuk yang besar. Kendala yang  dialami oleh peternak itik di Desa Batu Tulis adalah ketersediaan DOD berkurang, karena saat penetasan telur itik sering mengalami permasalahan. Telur itik hanya dapat  disimpan selama 3 – 6 hari di dalam suhu kamar (25–27°C). Apabila telur disimpan lebih dari waktu tersebut, telur akan fertil lalu mati. Salah satu cara mengatasi kendala tersebut dengan cara penyuluhan, sekaligus menerapkan alat tetas telur itik dengan kontrol suhu dan kelembaban (Thermostat-Hygrostat)  dengan sensor suhu dan kelembaban  DHT11. Hasil dari kegiatan jumlah telur yang bisa ditetaskan mencapai 80% (160 DOD), yang tidak bisa  menetas 20 % (40 butir). Walaupun demikian penggunaan alat penetuas telur bisa mengatasi masalah, kurangnya ketersediaan DOD dan meningkatkan harga jual telur itik.
Evaluation of the Impact Strength and Morphology Properties of Musa Acuminata Fiber Composite/CaCo3 Powder Nasmi Herlina Sari; Salman; Suteja; Yusuf Akhyar Sutaryono; Joni Iskandar
Journal of Fibers and Polymer Composites Vol. 2 No. 1 (2023): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v2i1.63

Abstract

Banana stem (Musa Acuminata, MA) fiber is a free agricultural waste obtained after harvesting the fruit. When compared to synthetic fibers, banana fiber has significant weaknesses in composite production, such as low interfacial bond strength between the fiber and the matrix. The purpose of this research is to improve the impact strength of banana stem fiber composites by adding CaCO3 powder. The hot press technique is used to create composites. In the production of polyester composites, woven MA and CaCO3 stem fibers are prepared. An impact testing machine and a scanning electron microscope were used to investigate the effect on morphological properties and impact strength. The study's findings revealed that a polyester composite containing 10% banana stem fiber and 25% CaCO3 had the highest impact strength of 45.27 KJ/m2, which was associated with strong adhesion between the CaCO3-fiber and the polyester matrix. Fiber pullout, matrix cracking, and fiber debonding were all observed in the composite fracture morphology. The resulting composite properties could be used to replace palm fiber/fiber glass composites.
The Mechanical Properties of a Water Hyacinth/Rice Husk Powders Composite for Tissue Engineering Applications Nasmi Herlina Sari; Suteja Suteja; Yusuf Akhyar Sutaryono
Journal of Fibers and Polymer Composites Vol. 2 No. 2 (2023): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jfpc.v2i2.123

Abstract

In this study, composites made from water hyacinth powder (WPH) and rice husk powder (RH) were created using the hot press method, and the composites were characterized to determine their suitability for biomedical applications such as tissue engineering. The mixing ratio of WPH/RH was investigated. Fourier transmission infrared spectroscopy (FTIR) revealed the presence of chemical bonds in the composites under investigation. Tensile tests were used to investigate the mechanical properties of the composite, which revealed that adding water WPH to the rice husk composite reduced the composite's strength. A composite with a 5% WPH content had the highest tensile strength of 32.72 MPa. Meanwhile, the mechanical strength of the other composites studied ranged from 25,537 MPa to 29.43 MPa. However, the elastic modulus of the composite increased with the addition of WPH. The SEM image shows that the powder distribution is less even, the interface between WPH-RH and polyester is quite tight, and the composite contains a number of voids. Characterization of the developed composite demonstrates that the WPH/RH addition ratio can be adjusted to achieve the desired composite properties for tissue engineering and cartilage regeneration applications.
Co-Authors Achmad Zainuri I Made Suartika Joni Iskandar Nur Kaliwantoro Putu Lokantara Salman Sinarep Sinarep Sujita Sujita Sujita Sujita Suteja Suteja Suteja Topan Gusti Wibowo Yusuf Akhyar Sutaryono