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Journal : Jurnal technoscientia

ANALISA SIFAT MEKANIK KOMPOSIT EPOKSI DENGAN PENGUAT SERAT POHON AREN (IJUK) MODEL LAMINA BERORIENTASI SUDUT ACAK (RANDOM) Basuki Widodo
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscentia Vol 1 No 1 Agustus 2008
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (159.469 KB) | DOI: 10.34151/technoscientia.v1i1.63

Abstract

Composite represent a number of systems of multi phase is nature of alliance that is alliance matrix materials or fastener with lasing. Of the merger will yield composite materials which have the nature of mechanical and different characteristic of its material, so that can be planned a composite material which wanted. Coconut coir is found abundantly but it’s exploiting which still less, besides their mechanical properties of this fibre still hanging in doubt. Pursuant to consideration of matter above, hence research about composite with materials filler of fibre of palm tree so that can know the mechanical properties of the each fibre of palm tree composition and matrix. From result of research which to be got highest composite interesting strength equal to 5.538kgf/ mm2 heavy fraction fibre of palm tree 40 %. And highest interesting strength mean equal to 5.128kgf/mm2 heavy faction fibre of palm tree 40 %. Strength of highest composite impact equal to 33.395Joule/mm2 with strength of mean impact 11.132Joule/mm2 heavy fraction fibre of palm tree 40 %.
ANALISA CHROME DEPOSIT DAN HARDNESS PADA PROSES HARD CHROME DENGAN VARIASI ARUS UNTUK RODA GIGI SEPEDA MOTOR Basuki Widodo; Wahyu Panji Asmoro
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 2 Februari 2012
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v4i2.125

Abstract

Most of common public equalizes term chrome metal bedding type cum all. When we call elektroplating which meraka intention is chrome. Chrome is metal bedding but in the application of his(its is applied in the form of solit like: mobil/motor, engine block awning, bumper and other aksesoris. Fundamental bedding applies nipple plating, that is layering metal with nipple base material this thing aim to get smooth equiamplitude surface and gleams. Just nipple doesn't make equiamplitude surface of metal arranged in layers gleams. After arranged in layers with chrome then equiamplitude surface of metal arranged in layers gleams glittering like at a mirror. In bedding of hard chrome it is important to know how big level of hardness to be gotten better bedding result, besides need to be known thickness of deposit so that can protect substance from friction with other substance. At this research done various current when bedding process of hard chrome. Current applied is 15 Amperes, 20 Amperes, 25 Amperes at temperature 450 C. Is expected with existence of various current can yield level of varying hardness and thickness, so that knowable influence various current at process chrome at gear product. From result of research it is got that ever greater of current given increasingly downwards level of the hardness. So do with the thickness is ever greater is current which in giving, increasingly the chrome layer thick.