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All Journal BERKALA FISIKA Jurnal Teknologi Bahan Nuklir Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Jurnal Fisika Indonesia Jurnal Teras Fisika : Teori, Modeling, dan Aplikasi Fisika PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)
Kartika Sari
Jurusan Fisika, FMIPA, Universitas Jenderal Soedirman
Agriculture, Biological Sciences & Forestry Astronomy Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Mathematics Physics Other

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PENGARUH DEFORMASI DINGIN TERHADAP KARAKTER PADUAN Zr-0,3%Mo-0,5%Fe-0,5%Cr PASCA PERLAKUAN PANAS Sungkono .; Kartika Sari; Nani Yuliani
Jurnal Teknologi Bahan Nuklir Vol 7, No 1 (2011): Januari 2011
Publisher : PTBN - BATAN

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Abstract

ABSTRAK PENGARUH DEFORMASI DINGIN TERHADAP KARAKTER PADUAN Zr-0,3%Mo-0,5%Fe-0,5%Cr PASCA PERLAKUAN PANAS. Logam paduan Zr-Mo-Fe-Cr dikembangkan untuk mendapatkan material kelongsong yang mempunyai sifat mekanik, fisis, dan ketahanan korosi tinggi dalam lingkungan iradiasi di reaktor nuklir. Tujuan penelitian ini adalah mendapatkan pengaruh deformasi dingin terhadap karakter paduan Zr-0,3%Mo-0,5%Fe-0,5%Cr pasca perlakuan panas. Metode yang digunakan meliputi pengamatan mikrostruktur dengan mikroskop optik, kekerasan dengan microhardness vickers tester, dan komposisi kimia dengan XRF. Hasil penelitian menunjukkan bahwa paduan Zr-0,3%Mo-0,5%Fe-0,5%Cr pasca perlakuan panas 650-750 ºC dan waktu penahanan 1 jam mengalami retak pada pengerolan dingin dengan reduksi 5-15%, sedangkan pasca perlakuan panas 650-750 ºC dan waktu penahanan 1,5-2 jam mampu menerima reduksi tebal 5-15% tanpa retak. Kekerasan paduan Zr-0,3%Mo-0,5%Fe-0,5%Cr pasca perlakuan panas 650-750 °C semakin tinggi seiring dengan semakin besarnya deformasi dingin yang diterapkan. Komposisi Mo dalam paduan Zr-Mo-Fe-Cr pasca perlakuan panas (750 ºC, 1 jam) dan pengerolan dingin (r = 15%) adalah 0,2508% berat atau 83,60% dari teoritis. Karakteristik paduan yaitu mikrostruktur, kekerasan dan komposisi kimia dipengaruhi oleh perlakuan panas dan deformasi dingin.   KATA KUNCI: Paduan Zr-0,3%Mo-0,5%Fe-0,5%Cr, perlakuan panas, deformasi dingin, mikrostruktur, kekerasan, komposisi kimia. ABSTRACT EFFECTS OF COLD DEFORMATION ON THE CHARACTERISTICS OF Zr-0.3%Mo-0.5%Fe-0.5%Cr ALLOY AFTER HEAT TREATMENT. Zr-Mo-Fe-Cr alloy is developed to obtain a cladding material that possesses high mechanical, physical and corrosion resistant properties that can withstand irradiation in the nuclear reactor. The objective of this research is to study the effects of cold deformation on the characteristics of Zr-0.3%Mo-0.5%Fe-0.5%Cr alloy after heat treatment. The methods employed included microstructure observation using optical microscope, hardness using microhardness Vickers tester, and chemical composition using XRF. The results of this research show that the Zr-0.3%Mo-0.5%Fe-0.5%Cr alloy after heat treatment at 650 -750°C and soaking time of 1 hour experienced cracking during cold rolling with reductions of 5-15%, whereas the alloys after heat treatment at 650 - 750°C and soaking time of 1.5-2 hours sustained thickness reductions of 5-15% without cracking. The hardness of Zr-0.3%Mo-0.5%Fe-0.5%Cr alloys after heat treatment at 650-750°C became higher with larger applied cold deformation on the alloy. The composition of Mo in Zr-0.3%Mo-0.5%Fe-0.5%Cr alloy following heat treatment (750°C, 1 hour) and cold rolling (r = 15%) is 0.2508 wt%, or theoretically 83.60%. In general, the characteristics of the Zr-Mo-Fe-Cr alloy, i.e. microstructure, hardness, and chemical composition, are found to be affected by heat treatment and cold deformation. FREE TERMS: Zr-0.3%Mo-0.5%Fe-0.5%Cr alloy, heat treatment, cold deformation, microstructure, hardness, chemical composition.
Sifat Optik dari Material Fiberglass dengan Filler Serat Sansiviera Trifasciata dan Polystyrene sebagai Panel Akustik (Halaman 36 s.d. 39) Sunardi -; Kartika Sari
Jurnal Fisika Indonesia Vol 17, No 50 (2013)
Publisher : Department of Physics Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (180.247 KB) | DOI: 10.22146/jfi.24422

Abstract

Panel akustik yang terbuat dari suatu material komposit yang biasa disebut fiberglass dapat dimanfaatkan untuk berbagai keperluan hidup. Salah satunya dimanfaatkan sebagai bahan pendukung panel akustik. Namun sebagian besar komponen fiberglass terbuat dari bahan-bahan sintesis seperti plastik dan sejenisnya. Material demikian disamping tidak ramah lingkungan juga mahal dan banyak mengandung resiko kimiawi. Dalam riset ini, fiberglass tersusun dari material komposit berbahan baku organik serat sansivera trifaciata (daun lidah mertua). Secara umum fiberglass dibentuk dari penguat (filler) dan matrik, yang merupakan kombinasi serat dan polystyrene sebagai filler dan epoksi resin yang berfungsi sebagai material alternatif penganti bahan sintesis yang sering digunakan. Material ini bersifat murah dan ramah lingkungan, sehingga dapat menghasilkan suatu panel akustik yang dapat  menyerap bunyi yang berasal dari sumber bunyi tertentu. Komposit dibuat dengan dua variasi yaitu variasi komposisi serat Sansivieria Trifasciata dan polystyrene sebagai filler serta variasi ketebalan dari komposit yang dihasilkan dari ketiga kombinasi tersebut menggunakan metode tabung impedansi. Hasil penelitian menunjukkan bahwa variasi komposisi dan  ketebalan komposit dapat mempengaruhi koefisien serap bunyi sebesar 0,9 pada frekuensi 2500 Hz pada komposisi serat 55%, polystyrene 10% dan matrik 35% dengan ketebalan 3 cm. Hal Ini menunjukkan bahwa komposit serat Sansivieria Trifasciata dan polystyrene dapat digunakan sebagai filler fiberglass  yang digunakan pengganti panel akustik peredam bunyi yang lebih baik dibandingkan dengan filler dari serat jenis lainnya.
Analisis struktur morfologi membran kitosan/PEO dan kitosan/PEG4000 Kartika Sari; Sunardi Sunardi; Agung Bambang Setio Utomo; Edi Suharyadi; Evvy Kartini; Evi Yulianti
Jurnal Teras Fisika: Teori, Modeling, dan Aplikasi Fisika Vol 3 No 1 (2020): Jurnal Teras Fisika: Teori, Modeling, dan Aplikasi Fisika
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jtf.2020.3.1.2756

Abstract

Pembuatan dan pengujian membran kitosan/PEO dan kitosan/PEG4000 dilakukan bertujuan untuk membandingkan struktur morfologi dan gugus fungsi yang dihasilkan dari membran kitosan/PEO dan kitosan/PEG4000. Pembuatan membran Kitosan/PEO dan kitosan/PEG4000 dilakukan dengan metode solution casting. Karakterisasi dilakukan menggunakan FTIR (Fourier Transform Infra Red) dan SEM (Scanning Electron Microscopy). Hasil FTIR membran kitosan, kitosan/PEO dan kitosan/PEG4000 menunjukkan adanya interaksi gugus fungsi –OH dan C-H di dalam membran kitosan/PEO dan kitosan/PEG4000. Bilangan gelomgang 1500 – 945 cm-1 terbentuk ikatan bending antara gugus fungsi C-C dan –NH3. Hasil SEM menunjukkan terbentuk agglomerasi dengan bertambahnya PEO dan PEG4000 pada larutan. Agglomerasi terjadi homogen di permukaan membran menunjukkan adanya pengaruh penambahan PEO dan PEG4000 pada pembentukan membran sehingga menghasilkan ikatan antar atom yang semakin renggang/tidak stabil. Hasil membran kitosan/PEO dan kitosan/PEG4000 dapat digunakan sebagai polimer elektrolit padat.
Analisis Korelasi Kondisi Pembuatan Film Tipis Polipropilen (PP) dan Sifat-Sifat Mekaniknya Dengan Metode Uji Tarik Kartika Sari; Rahmat Satoto
BERKALA FISIKA Vol 13, No 2 (2010): Berkala Fisika, Edisi Khusus
Publisher : BERKALA FISIKA

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Abstract

Condition Correlation Analysis of Thin Film Polypropylene (PP) and Attributes Mechanical Tensile Testing Method has been performed in Polymer Test Lab located at LIPI Bandung. This study aims to examine the relationship between the manufacture of thin film with a three-siftat sisitem cooling and mechanical properties. Sample material used is Polypropylene (PP) Y101XX grain pellets. Then the material is arranged on the aluminum frame of the heating plate and plastic transparencies of six samples. Such materials will be heated with two variations of temperature at the same time given the pressure by using the hot press Gonno-02 326 at 175oC and 225oC and given three different treatment when the cooling process that is in the chill with ice water (quenching), in the chill on cold press and cooled until it reaches room temperature by turning off the heater. Samples that have formed a thin film forming dipotopng Dumbbell type ISO 527-2. Of the six films produced by two samples with different cooling systems made seven Dumbbell. Then Dumbbell-dumbbell was conducted testing of mechanical properties by measuring the strain, stress and elastic modulus using a tensile test using a Universal Tensile Tester.   Keywords: Polypropylene (PP), Thin Film, Universal Tensile Tester  
PENGARUH KONSENTRASI LARUTAN EKSTRAK DAUN LIDAH MERTUA TERHADAP ABSORBANSI DAN TRANSMITANSI PADA LAPISAN TIPIS Sunardi Sunardi; Kartika Sari
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 1 (2012): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2012
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

It has done research on the effect of the extract solution concentration in-law tongue (Sansevieriatrifasciata) on the absorbance and transmittance in thin layers. Experimental research is that by extracting the leaves of the tongue-in-law to obtain a dye. Then made a solution with a concentration of 1%, 2%, 3%, 4%, 5%, 6% and7%, and also made merua pure aloe extract solution, a solution of TiO 2, and a mixture of both. Characterization of a solution made with UV-Vis spectrometer 1800 which aims to determine the value of absorbance and transmittance. Spectrometer set at a wavelength of 411nm- 665 nm and an absorbance range 0-3. The results show that there is a relationship between the concentration of the absorbance by the equation A = 22,9c + 0.1946. The greater the concentration used, the greater the smaller the value of absorbance and transmittance values. The maximum absorbance obtained at a wavelength λ = 411 nm and λ = 665 nm while the absorbance value and the maximum trasmitansi respectively 3,58 and 1,433. . Key words:leaf extract in-law tongue (Sansevieriatrifasciata), absorbance, transmittance.
FABRIKASI DAN KARAKTERISASI SIFAT MEKANIK SERAT DAUN LIDAH MERTUA DENGAN MATRIK EPOKSI RESIN SEBAGAI FIBERGLASS Kartika Sari
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 1 (2012): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2012
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

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Abstract

The technology is made from fiberglass for polycarbonate production process has the disadvantage of expensive, environmentally unfriendly and not able to absorb some heat intensity. Though fiberglass materials can now be based on organic materials that are environmentally friendly and easy to obtain. One is the leaf fibers of the tongue-in-law. Fabrication and characterization of the mechanical properties of fiber-matrix leaves the tongue-in-law with an epoxy resin as fiberglass conducted to determine the mechanical properties or mechanical properties (compressive strength, tensile strength and impact) of the resulting composite material. In this paper we will discuss the compressive strength and tensile strength of fiber composite material that leaves the tongue-in-law berfiller. Composite specimens made with the two treatments, namely variations in the composition of leaf fibers and matrix as well as tongue-in-law variation of the thickness of the resulting composite material. Variation of the composition of leaf fibers and the matrix is made tongue-in-law with a ratio of 0%: 100%, 20%: 80%, 35%: 65% and 50%: 50%, while the variation in thickness is 2 mm and 3 mm. The results showed that the addition of leaf fibers of the tongue-in-law and the resulting thickness variations can affect the compressive strength and tensile strength of the composite material. On the compressive strength tests obtained from a thickness of 2 mm is obtained for 128.63 MPa and a thickness of 3 mm at 80 MPa, whereas for the fiberglass on the market obtained compressive strength 36.2 MPa. Compressive strength will be reduced if the thickness of the composite increases and increases with the increasing changes in the ratio between the volume fraction of fibers leaves the tongue-in-law and epoxy resin. For tensile strength test on the composite thickness of 2 mm is obtained for 39.4 MPa and a thickness of 3 mm at 89.6 MPa. The resulting tensile strength increases when the thickness of the composite and the volume fraction ratio increases. This is because the nature of the leaf fibers of the tongue-in-law who has a small and delicate form, so that with increasing fiber volume fraction ratio leaves the tongue-in-law with an epoxy resin can increase the compressive strength and tensile strength composite materials. Based on the analysis of compressive strength and tensile strength can be concluded that the fiber-based composite materials Duan tongue-in-law as a filler and epoxy resin as a matrix that is generated can be used as an alternative to the manufacture of fiberglass because it has a compressive strength and tensile strength greaterthan the thickness of the thinner fiberglass manufacturer. Keywords: composites, leaf tongue-in-law, compressive strength, tensile strength, fiberglass.
SIFAT OPTIK DAN PERMITIVITAS LISTRIK MEMBRAN POLIMER PADAT KITOSAN/PEO Kartika Sari; Sunardi Sunardi; Agung Bambang Setio Utomo; Parmin Lumban Toruan; Evi Yulianti; Mashadi Mashadi
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 17 No. 2 (2020): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v17i2.4987

Abstract

Synthesis and characterization of the chitosan/PEO solid polymer membranes were carried out to determine the morphological structure, crystal structure and functional groups. Synthesis of the chitosan/PEO solid polymer membrane was carried out by solution casting method. Characterization was performed using the FTIR (Fourier Transform Infra Red), XRD (X-ray Diffraction), SEM (Scanning Electron Microscopy) and EIS (Electrochemical Impedance Spectroscopy). The FTIR results showed that the chitosan/PEO solid polymer membrane interacted with the –OH and C-H functional groups at wave numbers 1500 - 945 cm-1 and formed a bending bond between functional groups  of the C-C and –NH3. The SEM results showed that the homogeneous agglomeration was formed on the membrane surface due to the addition of PEO powder. This causes the formation of bonds between atoms to unstable. The XRD results obtained that the chitosan/PEO solid polymer membrane pattern tended to have a semicrystalline structure. The graph of the EIS results shows the electric permittivity does not form a semicircular arc. There was no grain response on the chitosan / PEO solid polymer membrane. The results of SEM, XRD, FTIR and EIS characterization show that chitosan /PEO solid polymer membranes can be used as an alternative to solid polymer electrolytes.
Kajian Hasil Pengujian X-Ray Diffraction (XRD) Dan Konstanta Dielektrik Membran Polimer Kitosan/PEG4000 dengan Lithium Triflat (LiCF3SO3) Kartika - Sari; Agung Bambang Setio Utomo; Parmin Lumban Toruan; Ampala Khoryanton
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 18 No. 2 (2021): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v18i2.6717

Abstract

Synthesis and testing of chitosan/PEG4000 solid electrolyte polymer membrane with LiCF3SO3 salt as a surfactant was carried out to determine crystalline size and type of structure using X-Ray Diffraction (XRD) and dielectric constant using Electrochemical Impedance Spectroscopy (EIS). The manufacture of chitosan/PEG4000 electrolyte polymer membrane with LiCF3SO3 salt using the solution casting method. The samples used in the XRD and EIS tests were in the form of solid electrolyte polymer membranes of chitosan, chitosan/PEG4000 and chitosan/PEG4000 with LiCF3SO3 salt. XRD test showed that the crystalline size of the chitosan, chitosan/PEG4000, and chitosan/PEG4000 electrolyte polymer membranes with LiCF3SO3 salt experienced a 2θ angle shift and formed a semicrystalline phase. The peak intensity increase occurred after chitosan was added with PEG4000 with LiCF3SO3 salt. The crystalline size obtained for the electrolyte polymer membrane of chitosan, chitosan/PEG4000 and chitosan/PEG4000 salt LiCF3SO3 was 4,002 nm; 2,474 nm and 4,183 nm. Meanwhile, the type of structure produced by chitosan, chitosan/PEG4000 and chitosan/PEG4000 electrolyte polymer membranes with LiCF3SO3 salt is a semicrystalline phase. The dielectric constant for solid electrolyte polymer membranes of chitosan/PEG4000, and chitosan/PEG4000 with LiCF3SO3 salt are 3,4 and 16,6 x 103. XRD and EIS test results show that chitosan/PEG4000 polymer membrane with LiCF3SO3 salt as a surfactant can be applied as an alternative to solid electrolyte polymer secondary batteries.
Co-Authors Agung Bambang Setio Utomo Agung Bambang Setio Utomo Agung Bambang Setio Utomo Ampala Khoryanton Edi Suharyadi Evi Yulianti EVI YULIANTI Evvy Kartini Mashadi Mashadi Nani Yuliani Parmin Lumban Toruan Rahmat Satoto Sunardi - sunardi sunardi Sunardi Sunardi Sunardi Sunardi Sungkono .