Syafri Syafri
Universitas Riau

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Efisiensi mesin pemecah batu split (stone crusher) dan pengaruhnya terhadap kerugian (losses) produksi Kaspul Anuar; Syafri Syafri; Mia Nur Kholizah
TURBO [Tulisan Riset Berbasis Online] Vol 12, No 1 (2023): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v12i1.2084

Abstract

Generally, cement factories produce secondary product in the form of split stone. Split stone products are produced from basalt rock crashed into aggregates of a certain size. This research is based on the results of split stone production, which is not following the target at a cement factory on the island of Sumatra. It creates production losses and financial losses. One of the causes of the incompatibility of the split stone production target is the non-optimal performance of the stone crusher machine. This research conducted a study related to the calculation of the stone crusher machine efficiency. Data in the real production capacity was obtained from recorded data in the field for twelve months. From the data obtained, the highest efficiency of the stone crusher machine of 58.32% occurred in the first month with a total production loss of 1,086 tons or equivalent to Rp. 217,296,000. The lowest efficiency of the stone crusher of 3.52% occurred in the eighth month with a total production loss of 12,133 tons or equivalent to Rp 4,478,112,000.
Analysis of the Braking System in the Gardapati Prototype Energy Saving Car Halim Davista; Syafri Syafri; Fablil Huda; Kaspul Anuar
Proksima Vol 1 No 2 (2023): Jurnal ProKsima
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/proksima.v1i2.14

Abstract

The braking system is one of the crucial components in a vehicle because braking is a vital safety feature of the vehicle. The braking system functions to reduce or slow down the speed and stop the vehicle, as well as to enable the possibility of parking the vehicle on a downward slope. The braking system under investigation is examined in the prototype vehicle called Gardapati, which employs a hydraulic brake system. Gardapati is a vehicle created by students from the University of Riau's Mechanical Engineering Department, affiliated with the UKM Selembayung, following the standard references provided by the Energy-Efficient Vehicle Competition organized by BPTI. This final project will involve several calculations related to the braking system, following the specifications used in the Gardapati vehicle. First, calculations will determine the dynamic braking force required (Fb) when the vehicle is moving at a speed of 50 km/h with a distance of 20 meters, as well as the static braking force (Fb) required when the vehicle is on an incline of 11.2 degrees, adjusted to the requirements and regulations of the 2023 Energy-Efficient Vehicle Competition (KMHE). Then, the braking distance will be calculated for speeds of 30, 40, and 50 km/h on dry and wet asphalt road conditions. From the calculation results and data analysis, it is found that the required dynamic braking force (Fb) is 510,76 N, and the static braking force (Fb) is 830,31 N. Meanwhile, the minimum braking distance is observed on dry asphalt road conditions at a speed of 30 km/h with a percentage error of 1,59 %, where the theoretical value is 5.67 m and the actual value is 5,76 m. On the other hand, the highest braking distance is observed on wet asphalt road conditions at a speed of 50 km/h with a percentage error of 7,39%, where the theoretical value is 14.47 m and the actual value is 15.54 m. Of the two road conditions, the largest percentage error occurs when testing the vehicle at speeds of 30, 40, and 50 km/h on wet asphalt conditions, amounting to 4,61%. With this level of percentage error, it can be concluded that the variation in the obtained data is relatively small, which is less than 10%.
Pembuatan Media Informasi Pintar Berbasis Smart Tv Dan Raspberry Untuk Masjid Nur Ikhlas Di Desa Buluh Cina, Kampar Kaspul Anuar; Dedi Rosa Putra Cupu; Warman Fatra; Syafri Syafri; Dedy Masnur; Putri Nawangsari; Nazaruddin Nazaruddin; Dian Oktary
BATOBO: Jurnal Pengabdian Kepada Masyarakat Vol 1 No 2 (2023): BATOBO: Desember 2023
Publisher : Jurusan Teknik Elektro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/batobo.1.2.64-71

Abstract

Kegiatan pengabdian ini dilaksanakan sesuai dengan usulan Perangkat Desa Buluh Cina yang menginginkan adanya media informasi pintar dengan display berupa smart tv pada masjid Nur Ikhlas yang posisinya dekat dengan lokasi objek wisata desa. Masjid ini sering digunakan oleh wisatawan untuk melaksanakan ibadah shalat. Kegiatan pengabdian dimulai dengan mempersiapkan alat dan bahan berupa raspberry, modul RTC, kabel HDMI, TV LED dan power adaptor. Tahapan kegiatan dilakukan dengan menginstal sistem operasi pada memory card yang dilanjutkan dengan pembuatan tampilan media informasi menggunakan bahasa HTML dan CSS. Tampilan media informasi dibuat semenarik mungkin untuk menampilkan informasi yang diinginkan. Proses berikutnya yang dilakukan yaitu mengkonfigurasi raspberry pi dan installasi web server ke dalam raspberry pi. Hasil pembuatan media ini selanjutnya dipasang di lokasi pengadian. Berdasarkan evaluasi yang dilakukan, media informasi pintar ini sangat membantu pengurus masjid dalam menampilkan informasi penting seperti rencana kegiatan, jadwal shalat, laporan keuangan dan lain lain.