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All Journal E-Jurnal Ekonomi Pembangunan Universitas Udayana Jurnal Penelitian Fisika dan Aplikasinya (JPFA) JFA (Jurnal Fisika dan Aplikasinya) UNEJ e-Proceeding Jurnal Pengabdian Ilung (Inovasi Lahan Basah Unggul) Sewagati RING Mechanical Engineering

Linda Silvia, Linda

Institut Teknologi Sepuluh Nopember

Author-ID : 542787

Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science 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 Other

Published : 15 Documents Claim Missing Document

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Pengaruh Penambahan Konsentrasi Pasir Besi dalam Resin Epoksi pada Sifat Korosi Besi Karbon Linda Silvia
Jurnal Fisika dan Aplikasinya Vol 11, No 3 (2015)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Telah dilakukan penelitian mengenai pengaruh penambahan konsentrasi pasir besi dalam resin epoksi terhadap sifat korosi besi karbon. Metode separasi sederhana pasir besi dilakukan dengan menggunakan magnet.Eksperimen dilakukan dengan mengontrol konsentrasi pasir besi dengan variasi komposisi 0%wt, 10%wt, 30%wt, dan 50%wt dari total berat komposit, kemudian dilapiskan pada baja karbon dan dikeringkan padatemperatur ruang. Komposit yang telah terbentuk direndam ke dalam larutan NaCl 10 M selama 21 hari dan selanjutnya diuji laju korosi. Karakteristik pasir besi diamati dengan X-Ray Diffractometer (XRD) yang digunakan untuk mengidentifikasi fasa pasir besi dan X-Ray Flourescence (XRF) untuk mengukur komposisi elemen dan oksida dari pasir besi. Laju korosi material komposit yang dihasilkan diuji dengan menggunakan metode kehilangan massa. Berdasarkan hasil analisa pengukuran laju korosi menggunakan metode kehilangan massa diperoleh laju korosi terbesar terjadi pada penambahan konsentrasi pasir besi 30%wt yaitu 71,9246 mpy dan laju korosi mengalami penurunan terjadi pada 50%wt dari total berat komposit adalah 12,5379 mpy, dimana memiliki ketahanan korosi yang lebih baik sehingga dapat digunakan sebagai pelapis cat kapal laut.

Analisis Silika (SiO2) Hasil Kopresipitasi Berbasis Bahan Alam menggunakan Uji XRF dan XRD Linda Silvia; Mochamad Zainuri
Jurnal Fisika dan Aplikasinya Vol 16, No 1 (2020)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v16i1.5322

Synthesis process of silica (SiO2) from Bancar sand has been carried out by coprecipitation method using NaOH. This study tried to obtain high purity silica from the natural resources by analyzing it using the Rietveld method. Experiments are conducted with different training. Study of X-ray Fluorescence (XRF) analysis showed that Bancar sand was used containing a silica composition weight of 81.7%. X-ray Diffraction (XRD) pattern proves that the synthesized SiO2 formed is amorphous silica, but is still a crystal structure, so that amorphous silica has not yet been formed as a whole. SiO2 content obtained showed high purity using the Rietveld method proved by GoF < 4%. By using MAUD software was obtained silica from coprecipitation methods have particle size were 98.4 ± 57.7 nm.

Pengaruh Ion Doping Zn pada Sifat Kemagnetan Barium M-Heksaferit BaFe12−xZnxO19 berbasis Pasir Besi Tulungagung Linda Silvia; Kurniawati Choirur Rosyidah; Mohammad Zainuri
Jurnal Fisika dan Aplikasinya Vol 9, No 3 (2013)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Telah dilakukan penelitian mengenai pengaruh ion doping Zn terhadap sifat kemagnetan Barium MHeksaferit (BaM) (BaFe12−xZnxO19) berbasis pasir besi Tulungagung. Sintesis serbuk (BaM) menggunakan metode kopresipitasi dengan bahan dasar pasir besi dari daerah Tulungagung. Eksperimen dilakukan dengan mengontrol konsentrasi Zn dengan variasi nilai x = 0; 0,3; dan 0,7 dengan temperatur kalsinasi 1000C. Karakterisasi sampel dilakukan dengan XRD, VSM (Vibrating Sample Magnetometer), dan SEM. Pembentukan fase BaM dikonfirmasi melalui data XRD, dimana pembentukan fase BaM terbentuk pada temperatur kalsinasi 1000C, sedangkan untuk variasi doping didapatkan untuk BaM tanpa doping medan koersivitasnya 0,09 T dan remanensi magnetiknya 7,72 emu/gr dan untuk konsentrasi doping x = 0,3 medan koersivitas 0,04 T dan remanensi magnetiknya 11,81 emu/gr, dengan nilai medan koersivitas dan magnetisasi remanensi partikel BaM bervariasi bergantung pada konsentrasi ion doping yang ditambahkan. Partikel BaM yang terbentuk berstruktur heksagonal dengan ukuran partikel rata-rata ± 1 μm.

Effects of The Addition of Carbon on Abaca Fiber and PVA Composite Materials Based on Mechanical and Acoustic Properties Susilo Indrawati; Syabania R A; Linda Silvia; Lila Yuwana; Mochamad Zainuri
Jurnal Fisika dan Aplikasinya Vol 19, No 1 (2023)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v19i1.14534

Abaca is a kind of banana that grows in Indonesia. Abaca banana product utilized in this research is a fiber that obtained from the midrib of the stem. Henceforth, abaca fiber is processed to be the form of membranes. The purpose of the study are to determine the physical, mechanical and acoustic properties of abaca fiber composite materials as fillers and polyvinyl acetate (PVA) as a matrix. The ratio of composite materials of abaca fibers and PVA is 1:10. The variations used in producing membranes are the addition of carbon powders by 0%, 2%, 4%, 6% and 8%. The characteristics carried out include testing of density, morphology, tensile strength and sound absorption coefficient. The results reveal that the highest density is obtained from the sample of 0% carbon, i.e., 1.026 gr/cm3. Furthermore, the mechanical properties testing shows the highest yield stress value in samples with 4% carbon of 476.8 MPa and the highest Young modulus in samples with 8% carbon is 7905.1 MPa. Therefore, the addition of carbon could improve the mechanical properties of composites materials. Based on the measurement of sound absorption coefficient using an impedance tube with 1 microphone, the highest value can be attained from the sample of 4% carbon, namely 0.211 which shows the sample is more reflective. The material is reflective because the amount of abaca fiber used is less than PVA. The diameter of pores formed between the fiber and PVA are very small which could cause the absorption coefficient value to be lower. Therefore, further research will focus on the addition of abaca fiber content in composite materials. The positive point in this study is that the addition of carbon with 4% and 8% provides optimal mechanical ability.

Co-Authors Agus Purwanto Agus Purwanto Agus Rubiyanto Ahmad Irfaan Hibatullah Amir, Moh Faisal Anwar, Muhammad Khayrul Ariffiyanto, Wahyu Astuti, Fahmi Bahri, Ayi Syaeful Bayu Aslama Cahyono, Yoyok Darminto Darminto Darminto Dewa Nyoman Budiana Diky Anggoro Ega Novialent Ena Marlina Fahmi Astuti, Fahmi Fatimah, Iim Fatimah, Iim Gatut Yudoyono Gontjang Prajitno Hibatullah, Ahmad Irfaan Kurniawati Choirur Rosyidah Lestari, Wien Lestyowati, Titis Lila Yuwana Lila Yuwana M. Arief Bustomi M. Zainuri Mariyanto Mariyanto Mashuri Mashuri Moh Faisal Amir Mohammad Zainuri Muhammad Khayrul Anwar Nur Robbi Nurrisma Puspitasari Puspitasari, Nurrisma Retno Asih Siti Chalimah Sri Yani Purwaningsih, Sri Yani Sriyani Purwaningsih Sudarsono Sudarsono Susilo Indrawati Syabania R A Titis Lestyowati Wahyu Ariffiyanto Widya Utama Widya Utama Zainuri (DOI: 10.12962/j24604682.v12i2.1331), Mochamad

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