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INDONESIA
Jurnal technoscientia
Published by Institut Sains dan Teknologi AKPRIND
ISSN : 19798415     EISSN : -     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Arjuna Subject : -
Articles 14 Documents
 1   2 
Search results for , issue "Technoscientia Vol 11 No 2 Februari 2019" : 14 Documents clear
PERKEMBANGAN LINGKUNGAN PENGENDAPAN DARI FORMASI SAMBIPITU KE FORMASI WONOSARI DAERAH JELOK, DESA BEJI, KECAMATAN PATOK, KABUPATEN GUNUNGKIDUL, DAERAH ISTIMEWA YOGYAKARTA Tania, Dina
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 2 Februari 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1529.009 KB) | DOI: 10.34151/technoscientia.v11i2.1252

Abstract

The research is investigating Middle Miocene to Pliocene geological stage of sediment depositional changing in Dusun Beji, Desa Jelok, Kecamatan Patuk, Kabupaten Gunung Kidul, Special Regionof Yogyakarta. Base on the measure section of cross-section analysis and bentonitic fossil analysis, the research area has three formations from old to young formation such as Sambipitu Formation, Oyo Formation, and Wonosari Formation. The result analyzed that microfossil show Sambipitu Formation deposition in the middle of the neritic zone and changedintothe deep neritic zone until lower bathyal in Oyo Formation, and it changes become more shallow in Wonosari Formation, which is depositions in the lower neritic zone to upper neritic zone as long Middle Miocene to Pliocene age. Sambipitu and Oyo Formation havedepositional changing from Lower Fan to Supra Fan Lobes on Mid Fan with lithology change form silt with bioturbation structure to pumice breccia, tuff, sandstone and claystone with slump structure, lamination and massive. In other depositional in Wonosari Formation have environment of Inner Ramp with clastic limestone dominated such as calsirusite and calcarenite.
KARAKTERISTIK MEKANIK KOMPOSIT SERAT CANTULA (AGAVE CANTULA ROXB) SEBAGAI ALTERNATIF BAHAN PENGUAT TERHADAP PARTISI RUMAH Wilaha, Lidi
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 2 Februari 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (516.144 KB) | DOI: 10.34151/technoscientia.v11i2.1265

Abstract

Using of natural fiber as ingredients of particle board products, still have to various studies to gain the character of the product’s standard. Study of Cantula fiber utilization with matrix of Yukalac 157 BQTN-EX unsaturated polyester as the design of composite manufacturing partition (simplicity wall) of housing is professionally researched and potential, it's important to do immediately investigation potential of characteristic Cantula’s fiber as alternative composite material to partition housing. Cantula fiber that has been cleaned, then soaked with a solution of NaOH 10% for 4 hours, then recleaned back, and let it dry naturally in the room without stright sunlight for 3 days until moisture content ranged from 8-10%. The composite samples are made with combination method hand laying and press shape with the fractional volume of 10%, 20%, 30%, 40%, and 50%. For matrix and hardener, using the Polyester Yukalac Type 157 BQTN-EX and MEXPO, the formal press is made by steel. To tool test impact standard is JIS K-7113, the spesimen test use ASTM D-5941, with microphoto, and SEM cross analysis used to for failure or errors (broken) analysis. The results have overall due to the fiber volume fraction Cantula-polyester compound against mechanical characteristics is grow up experienced of toughness impact with consecutive average volume fraction 10%, 20%, 30%, 40% therefore 6831.5 J/M2, 7464.5 J/M2, 8549 J/M2 and 10151.5 J/M2. But on the fraction of the fiber volume 50% started to droppen the value until 9515 J/M2. The increasing of absorby energy is caused by adding of fiber to compound, therefore be able to increase traits of toughness or properties and reversal. The fracturing of test impact on composite Vf 10%, 20%, 30% are failure is due to the outcome of matric failure increasingly, but at Vf 40% has a strengthening of fiber that is marked with the broken fiber and matrix tend to be simultaneously. in Vf 50%. The failure of the dominant due to the composition of the matrix that is less, the reinforcement of apparent comes only from the fiber, like sawn by the cross-section, that shows the debt phenomenon of the as much as number of fibre pulled out.
Jurnal Technoscientia Vol 11 No 2 Februari 2019-Cover-Redaksi-Daftar Isi Technoscientia, Jurnal Teknologi
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 2 Februari 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1135.783 KB) | DOI: 10.34151/technoscientia.v11i2.1268

Abstract

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Jurnal Technoscientia Vol 11 No 2 Februari 2019-Full Paper Technoscientia, Jurnal Teknologi
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 2 Februari 2019
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2641.536 KB) | DOI: 10.34151/technoscientia.v11i2.1269

Abstract

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