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"Design couch spect gamma camera. Design has been carried out couch spect gamma camera. This plan aims to complement the patient's bed gamma camera of fiber glass materials. Methods of making fiber by fiber glass casting. The shape of the bed made curved in the middle to add strength. From the result of design gain is expected to be on the couch spect gamma camera is made of fiber glass."

"Design couch spect gamma camera. Design has been carried out couch spect gamma camera. this plant aims to complement the patlent's bed gamma camera of fiber glass materials. Methods of making fiber by fiber glass casting. The shape of the bed made curved in the middle to add strength. From the result of design gain is expected to be on the couch spect gamma camera is made of fiber glass."

"Telah dilakukan penelitian untuk membuat material komposit dengan menggunakan poxy sebagai matriks dan woven roving E-Glass sebagai fiber. Pembuatan material enggunakan metode Vacuum Assisted Resin Infussion (VARI). Material dibuat dengan struktur serat terjalin 0°, 45°, dan -45° yang disusun sebanyak tujuh lapis. Uji tarik dilakukan untuk mengukur kekuatan mekanik material dan membandingkannya dengan hasil perhitungan menggunakan MATLAB 7.0.1. Pengujian dilanjutkan dengan penyinaran ultraviolet-A pada panjang gelombang 340nm yang lama penyinarannya divariasikan selama 10 jam, 20 jam, dan 30 jam. Kemudian, dilakukan kembali uji tarik dan didapatkan penurunan kuat tarik maksimum sebesar 28,22% sesudah penyinaran 30 jam, sedangkan modulus elastisitas relatif tidak berubah. Kerusakan yang terjadi akibat penyinaran pada ermukaan fiber dan matriks dilihat dengan menggunakan Scanning Electron Microscope (SEM).

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An experiment to make composites using epoxy as a matrix and woven roving E-Glass as a fiber was produced by a Vacuum Assisted Resin Infusion (VARI) method. The laminate systems consisted of seven woven fiber laminas with a pattern of 0°, 45°, and -45° degrees of orientation. Tensile properties of composites were obtained and compared with the result of MATLAB 7.0.1 program calculation The specimens were exposed by an ultraviolet-A (λ=340nm) with exposure period of 10, 20, and 30 hours The environmental tested specimens were followed by tensile test. The Ultimate Tensile Stress (UTS) of the composite decreased by 28,22% after 30 hours exposure. However, there was no reduction in the stiffness values. The Failure surfaces of specimen were observed using Scanning Electron Microscope. Failure was dominated with matrix rupture in transverse direction. "

"Limbah pertanian di negara agraris seperti Indonesia sangatlah potensial. Pengolahan limbah pertanian seperti jerami padi akan memberikan nilai tambah ekonomis bagi para petani di Indonesia. Salah satu caranya adalah dengan pembuatan biokomposit perupa papan serat jerami dan serat gelas dengan polimer PVAc. Papan serat ini berpotensi menjadi material struktur yang murah dan mudah di dapat dikarenakan jumlahnya yang melimpah dan murah. Untuk meningkatkan kekuatan jerami dalam pembuatan papan serat dilakukan proses awal berupa perendaman jerami dalam cairan NaOH. Hal ini dilakukan untuk memperbaiki sifat mekanis jerami. Untuk mendapatkan komposisi yang terbaik maka dibuat beberapa komposisi serat papan jerami mulai dari 20% berat serat hingga 70% berat serat. Komposisi optimal papan serat jerami padi berada pada 30% berat serat dengan kekuatan tarik sebesar 4.5 MPa. Variasi subtitusi serat gelas pada komposisi optimal papan jerami padi menghasilkan kekuatan optimal pada komposisi 50% jerami padi, 50% serat gelas dan 70% PVAc yaitu sebesar 4.26 MPa. Rata- rata kadar air 10% atau dibawah 13% menunjukkan papan serat ini sesuai dengan SNI 01-4449-2006.

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Agricultural waste in an agricultural country like Indonesia is very potential . Processing of agricultural wastes such as rice straw provides economic value for farmers in Indonesia. One way of agricultural processing is to manufacture biocomposites such as rice straw fiber and glass fiber hybrid boards with PVAc polymer. This fiberboard material could potentially as structural materials and can an inexpensive because the fiber source is abundant and cheap. To increase the strength of the fiberboard made an initial process of soaking hay in an NaOH solution was conducted.

From this research it was found that the optimal composition of the rice straw board was at 30 % by weight of rice straw with a tensile strength of 4.5 Mpa, increased BLA % compared to tensile strength of the pristine PVAc. Moreover, the optimal composition of the hybrid board was 50 % rice straw, 50 % glass fiber and 70 % PVAC and this composition resulted a tensile strength of 4:26 MPa . The tensile strength of the hybrid board was smaller than that of the straw board becuase of the presence of big voids in between the straw and the glass fibers. Average moisture content of 10 % met the SNI 01-4449-2006 criteria , which was below 13 %."

"Telah dilakukan penelitian untuk membuat material komposit sandwich dengan menggunakan epoxy dan lamina E-glass sebagai kulit dan polyurethane foam sebagai inti. Pembuatan material menggunakan metode Vacuum Assisted Resin Infusion (VARI), dan dibagi menjadi empat jenis material. Uji tarik dan uji tekan dilakukan untuk mengukur kekuatan mekanik material dan mengkarakterisasi jenis spesimen yang baik untuk digunakan dalam aplikasi kapal bersayap Wing in Surface Effect-8 (WiSE-8). Dari hasil pengujian didapatkan kekuatan mekanik terbaik dari panel III yang memiliki empat lapisan fiber dengan arah serat 0o, 90o, +45o, -45o dengan kuat tarik dan kuat tekan masing?masing bernilai 28,18 MPa 5,75 MPa. Kerusakan yang terjadi pada material berupa patahan yang dimulai dengan kegagalan pada inti dilanjutkan dengan kegagalan pada kulit akibat pengujian mekanik dilihat dengan menggunakan Scanning Electron Microscope (SEM).

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Sandwich composite materials consisting of epoxy and lamina E-glass as the facing layer dan polyurethane foam as the core layer. The materials were manufactured using a Vacuum Assisted Resing Infussion (VARI) method, the products were classified into four types of panels, panel I, II, III, and IV. Tensile and flextural tests applied to the materials to measure the mechanical strengths and to characterize whether is applicable for WiSE-8 application. The mechanical properties were obtained from panel III which consisted of four layers and a fibre direction of 0o, 90o,+45o, -45o. The tensile and flextural strengths were 28,18 MPa and 5,75 Mpa respectively. Scanning Electron Microscope (SEM) observation of the mechanical tested sampler showed that the failure of the materials started from the core and propagated to the facing layer."