Fly Ash and CaCO3 have their own advantages for filling epoxy, in terms of water absorption and side tensile strength, so hybrid fly ash and CaCO3 need to be investigated further. The purpose of this study was to determine the effect of hybrid filler combination (fly ash / CaCO3) on water absorption and tensile strength tested in dry and wet conditions. The main ingredients of this research are…
Keywords: epoxy, water absorption and fracture toughness. Filler is widely used to improve the mechanical properties of epoxy which is used as an adhesive. Some fillers have advantages and disadvantages so that filler hybridization can reduce the deficiency of each filler. The purpose of this study was to determine differences in water absorption in various hybrid filler compositions (fl…
Penggunaan teknologi sebagai alat pengukur jarak masih terbilang minim, dimana pengukuran jarak masih menggunakan alat ukur manual. Manusia khususnya penyandang tunanetra mereka berjalan dengan bantuan alat yang masih terbilang manual yaitu dengan tongkat biasa atau dengan bantuan orang lain. Sehingga perlu adanya suatu inovasi teknologi untuk memudahkan para penyandang tunanetra. Perancangan s…
Komposit sandwich pada penelitian ini terdiri dari inti (core) dari opened cell foam bambu dengan densitas sangat rendah dan skin yang tipis dan kaku dari plywood. Kelebihan komposit sandwich adalah ringan tetapi mempunyai kekakuan yang tinggi. Penelitian ini bertujuan untuk mengetahui densitas, kekuatan tekan arah ketebalan, kekuatan bending dan penyerapan air pada material komposit sandwich.…
Abstract- The “Koperasi Pegawai Negeri” (KPN) of Mataram University is a kind of saving/debit and loan cooperative that own by Mataram University. It is an institution cooperative which by the rule receive/collect/debit the funding (money) regularly from the members of the cooperative, as well as allows the members to get a modal credit/loan with a certain interest rate in accordance to the…