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Pengaruh kecepatan drum proses terhadap sifat fisik kulit kambing untuk sarung tangan golf Supriadi, Sugeng; Purnomo, Eddy; Meiyanti, Meiyanti
Majalah Kulit, Karet, dan Plastik Vol 12, No 25 (1998): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (912.92 KB) | DOI: 10.20543/mkkp.v12i25.357

Abstract

Fifteen pieces of wet blue were devided into three groups of equal number of pieces. All of the group were processed into glove leather with drum rotational speed of 15 RPM and 25 RPM resfectively. Analysis of varians showed that the speed effected the tensile strength, tensile stretch, elongation, and tear strength of the leather obtained. The leather processed at 25 RPM gave the highest tensile strength (138,56 kg/cm2) tensile stretch (29,30 mm), elongation (58,60%), and tear strength (30,53 kh/cm).   INTISARI Penelitian ini bertujuan untuk mengetahui pengaruh kecepatan drum terhadap sifat fisik kulit sarung tangan. Lima belas lembar kulit wet blue dibagi menjadi tiga kelompok yang sama jumlahnya. Masing-masing kelompok diproses menjadi kulit sarung tangan dengan variasi kecepatan drum 15 RPM, 20 RPM, dan 25 RPM. Analisa variansi menunjukkan terdapat perbedaan nyata diantara perlakuan terhadap kekuatan tarik, pertambahan mulur, persen pertambahan mulur dan ketahanan sobek. Hasil penelitian menunjukkan bahwa kulit yangdiputar dengan kecepatan 25 RPM memberikan nilai rata-rata tertinggi pada kekuatan tarik, pertambahan mulur, persen pertambahan mulur, dan ketahanan sobek masing-masing sebesar 138,56 kg/cm2, 29,30 mm, 58,60 % dan 30,53 kg/cm
Pengaruh kecepatan drum proses terhadap sifat fisik kulit kambing untuk sarung tangan golf Supriadi, Sugeng; Purnomo, Eddy; Meiyanti, Meiyanti
Majalah Kulit, Karet, dan Plastik Vol 12, No 25 (1998): Majalah Barang Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (912.92 KB) | DOI: 10.20543/mkkp.v12i25.357

Abstract

Fifteen pieces of wet blue were devided into three groups of equal number of pieces. All of the group were processed into glove leather with drum rotational speed of 15 RPM and 25 RPM resfectively. Analysis of varians showed that the speed effected the tensile strength, tensile stretch, elongation, and tear strength of the leather obtained. The leather processed at 25 RPM gave the highest tensile strength (138,56 kg/cm2) tensile stretch (29,30 mm), elongation (58,60%), and tear strength (30,53 kh/cm).   INTISARI Penelitian ini bertujuan untuk mengetahui pengaruh kecepatan drum terhadap sifat fisik kulit sarung tangan. Lima belas lembar kulit wet blue dibagi menjadi tiga kelompok yang sama jumlahnya. Masing-masing kelompok diproses menjadi kulit sarung tangan dengan variasi kecepatan drum 15 RPM, 20 RPM, dan 25 RPM. Analisa variansi menunjukkan terdapat perbedaan nyata diantara perlakuan terhadap kekuatan tarik, pertambahan mulur, persen pertambahan mulur dan ketahanan sobek. Hasil penelitian menunjukkan bahwa kulit yangdiputar dengan kecepatan 25 RPM memberikan nilai rata-rata tertinggi pada kekuatan tarik, pertambahan mulur, persen pertambahan mulur, dan ketahanan sobek masing-masing sebesar 138,56 kg/cm2, 29,30 mm, 58,60 % dan 30,53 kg/cm
RANCANGBANGUN GAME EDUKASI PENGENALAN HURUF HIJAIYAH DENGAN GAME EGINE CONSTRUCT 2 Supriadi, Sugeng
Buffer Informatika Vol 4, No 1 (2018)
Publisher : Technical Information, Faculty of Computer Science, Universitas Kuningan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25134/buffer.v4i1.1136

Abstract

The potential of carbonate apatite as an alternative bone substitute material Rahyussalim, Ahmad Jabir; Supriadi, Sugeng; Marsetio, Aldo Fransiskus; Pribadi, Pancar Muhammad; Suharno, Bambang
Medical Journal of Indonesia Vol 28, No 1 (2019): March
Publisher : Faculty of Medicine Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (339.221 KB) | DOI: 10.13181/mji.v28i1.2681

Abstract

Bone reconstructive surgery has become a common procedure, and bone transplantation has become the second most frequently performed tissue transplantation procedure worldwide. Therefore, the need for bone substitute materials has increased. Artificial bone substitutes exhibit osteoconductive properties and feature several advantages, including abundant resources, low cost, and low donor site morbidity. Carbonate apatite (CO3Ap) is a calcium phosphate ceramic that can be used as a synthetic bone graft. The carbonate content of this ceramic is similar to that of bone apatite. In this review, we show that carbonate apatite can be degraded given its chemical reactivity in a weakly acidic environment and through osteoclast resorption. Moreover, it is osteoconductive and promotes bone tissue formation without fibrotic tissue formation. Additionally, microstructural analysis revealed that new bone tissue is formed within the bone graft itself.
Metal Injection Moulding Process Simulation for Orthodontic Bracket Application Virdhian, Shinta; Jamilah, Sina; Supriadi, Sugeng; Suharno, Bambang
Jurnal Teknologi Bahan dan Barang Teknik Vol 7, No 2 (2017)
Publisher : Center for Material and Technical Product

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1790.931 KB) | DOI: 10.37209/jtbbt.v7i2.94

Abstract

Metal Injection Moulding (MIM) process is one of effective process to produce complex shape product in the mass production scale. MIM process had been applied in many applications such as consumer product, automotive, biomedical etc. In this work, an orthodontic bracket is manufactured using MIM process. Before manufacturing process, simulation using commercial software Sigmasoft is done to evaluate the design and optimize the process parameters. Some parameters are inserted to run simulations in order to get optimum process condition for MIM process. Parameters to be optimized include the mold and feedstock temperature, cycle time and pressure during the injection process. In this simulation, the melt temperature is 190 °C and mold temperature is varied from 90-150 °C based on the reference from Catamold. The optimum mold temperature is 90 °C and filling simulation shows that the melt can still fill the cavity in that temperature with optimum filling time 2.5 s. From the simulation, the existing design can be improved by reducing the size of the runner and removing the sharp corner.Proses Metal Injection Moulding (MIM) merupakan salah satu proses yang efektif untuk pembuatan produk logam yang memiliki bentuk yang rumit dan skala produksi massal. Proses MIM telah digunakan pada banyak aplikasi seperti produk rumah tangga, otomotif, biomedikal dan lain-lain. Dalam penelitian ini, braket ortodontik dibuat melalui proses MIM. Sebelum proses manufaktur, simulasi injeksi dilakukan dengan menggunakan software komersial Sigmasoft untuk mengevaluasi desain dan optimasi parameter proses. Beberapa parameter proses dimasukkan ke dalam simulasi untuk mendapatkan kondisi proses yang optimum, antara lain temperatur injeksi,temperatur mold, waktu proses, dan tekanan selama proses injeksi. Dalam simulasi ini, temperatur injeksi 190 °C dan temperatur mold divariasikan 90-150 °C dan waktu pengisian dari 0,5-3 detik. Hasil simulasi menunjukkan temperatur mold optimum pada 90 °C dan feedstock masih bisa mengisi rongga dengan waktu pengisian 2,5 detik. Dari hasil simulasi aliran menunjukkan desain yang ada dapat dioptimalkan dengan mengurangi ukuran runner dan bentuk yang tajam.