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RANCANG BANGUN MESIN PERAJANG PELEPAH SAWIT UNTUK PAKAN TERNAK Leni, Desmarita; Bahar, Zulbahri; Selviyanty, Veny
Jurnal Teknik Mesin Vol 11 No 2 (2018): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.11.2.167

Abstract

The design of the palm frond chopper machine for animal feed is a vocational application. The purpose of making palm frond chopper machines for animal feed is to help the community open a business field, especially the development of livestock production who grow oil palm. It is an expected that the palm frond chopper machine can help the community to improve economic output. This machine has dimensions of 600 mm x 500 mm where the working principle of the machine is to cut using a blade to accelerate the cutting process. Blade rotation is a obtained by using  3 HP motor and using pulley 5 inch as a tool to rotate the knife plate.
Perilaku Titanium Murni (CPTi grade 2) terhadap Lapisan Hydroxyapatite Untuk Aplikasi Medis Leni, Desmarita
Rang Teknik Journal Vol 1, No 1 (2018): Volume 1 No 1 Januari 2018
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31869/rtj.v1i1.602

Abstract

Penelitian ini membahas perilaku  titanium  murni (CPTi) dalam larutan Hydroxyapatite(HA) buatan untuk aplikasi medis. Ada tujuh benda uji  titanium murni yang digunakan dalam pengujian ini. Commercial Pure Titanium (CpTi). Spesimen dibersihkan dan dilakukan pelapisan dengan HA dengan metode EPD. Pengujian dilakukan dalam tujuh variasi waktu; 5 menit, 10 menit, 15 menit, 20 menit, 25 menit, 30 menit  dan 35 menit. Pengujian ini melihat tingkat lapisan HA terhadap CPTi apakah bisa menyatu dengan metode EPD. Hasil pengujian ini berguna untuk referensi pasien dan dokter implan tulang, dan implan gigi dalam memilih bahan material ortodontik yang lebih baik. Hasil penelitian menunjukkan CPTi memiliki tingkat pelapisan yang baik seperti variasi ketebalan HA yang didapat 24,8 µm (5 menit) sampai dengan ketebalan HA 32,7 µm (35 menit)Kata Kunci: CPTi. HA, Sintering, Lapisan
PERILAKU TITANIUM MURNI (CPTI GRADE 2) TERHADAP LAPISAN HYDROXYAPATITE UNTUK APLIKASI MEDIS Leni, Desmarita
Rang Teknik Journal Vol 1, No 1 (2018): Volume 1 No 1 Januari 2018 Rang Teknik Journal
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31869/rtj.v1i1.602

Abstract

Penelitian ini membahas perilaku  titanium  murni (CPTi) dalam larutan Hydroxyapatite(HA) buatan untuk aplikasi medis. Ada tujuh benda uji  titanium murni yang digunakan dalam pengujian ini. Commercial Pure Titanium (CpTi). Spesimen dibersihkan dan dilakukan pelapisan dengan HA dengan metode EPD. Pengujian dilakukan dalam tujuh variasi waktu; 5 menit, 10 menit, 15 menit, 20 menit, 25 menit, 30 menit  dan 35 menit. Pengujian ini melihat tingkat lapisan HA terhadap CPTi apakah bisa menyatu dengan metode EPD. Hasil pengujian ini berguna untuk referensi pasien dan dokter implan tulang, dan implan gigi dalam memilih bahan material ortodontik yang lebih baik. Hasil penelitian menunjukkan CPTi memiliki tingkat pelapisan yang baik seperti variasi ketebalan HA yang didapat 24,8 µm (5 menit) sampai dengan ketebalan HA 32,7 µm (35 menit)Kata Kunci: CPTi. HA, Sintering, Lapisan
Pengoperasian dan Perawatan PLTMH pada Pembangkit Listrik Mikro Hidro (PLTMH) di Sungai Batang Geringging Kota Padang Putra, Fajri Dwi; Effiandi, Nota; Leni, Desmarita
Jurnal Teknik Mesin Vol 10 No 2 (2017): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.10.2.183

Abstract

Water turbine is a tool to convert the potential energy of water into mechanical energy, this mechanical energy is then converted into electrical energy by a generator. Crossflow turbines are radial, small pressurized turbines with tangential injection from fan rotation with a horizontal shaft. The flow of water flows through the pipe entrance, and is arranged by a propeller and into the turbine fan rotation. After the water passes through the turbine fan rotation, the water is at the opposite fan rotation, thus providing additional efficiency. Finally, water flows from the casing either freely or through a tube under the turbine so that it rotates and turns the generator so it can produce electricity. Maintenance of PLTMH is carried out namely preventive maintenance such as; cleaning, lubrication and periodic checks. Maintenance corrections are carried out with the aim of being able to maintain the PLTMH component. Predictive maintenance of a treatment carried out in accordance with the conditions of the PLTMH and predicting damage that will occur in PLTMH
Rancang Bangun Mesin Pengiris Singkong Putra, Fajar Kurnia; Safril, Safril; Leni, Desmarita; Selviyanty YH, Veny
Jurnal Teknik Mesin Vol 12 No 1 (2019): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.12.1.196

Abstract

The design of the cassava slicer machine has a capacity of 38 kg / hour, this machine is designed to design a cassava slicing machine that has high usability, achieving the required motor power so that the desired engine capacity can be achieved, able to determine the exact method of slicing cassava . The working principle of Cassava Slicing Machine is to work when the electric motor is turned on, then the motor will rotate then the motor rotation is transmitted to the pulley, moving the slicing knife by 0.03653 N / mm2. After the shaft rotates, the disc where the blade will rotate and the cassava is ready for slices and the results of the cassava slices will come out through the output funnel. Cassava slicing machine using 1/2 HP motor with 1400 rpm rotation as its driver, and Framework with L St.37 profile material, type A belt, bearing with UCP205-16 type