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All Journal Edumaspul: Jurnal Pendidikan Jurnal Pembangunan Nagari MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Jurnal Teknik Industri Terintegrasi (JUTIN) Jurnal Surya Teknika AEEJ : Journal of Automotive Engineering and Vocational Education Journal of Scientech Research and Development Jurnal Teknik, Komputer, Agroteknologi dan Sains

Mukhnizar

Program Studi Teknik Mesin, Fakultas Teknik Dan Perencanaan, Universitas Ekasakti.

Author-ID : 6459430

Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mechanical Engineering Public Health Social Sciences Transportation Other

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PERILAKU PENGRAJIN GULA MERAH TEBU TRADISIONAL DI NAGARI BUKIK BATABUAH, KECAMATAN CANDUANG, KABUPATEN AGAM Ivonne Ayesha; Yurnalis Yurnalis; Mukhnizar Mukhnizar
Jurnal Pembangunan Nagari Vol 1 No 2 (2016)
Publisher : Badan Penelitian and Pengembangan (Balitbang), Padang, West Sumatra, Indonesia

The objectives of this study was to evaluate, to understand and to analysis production behavior comonted by the farmers as brown sugar cane producer in the Nagari Bukik Batabuah, the sub-district of Canduang, the district oh Agam. Site of the location being studied was determined purposively based on such a determination that this village was one of brown sugar cane production centre which is famous in West sumatera, and known as one of the local specific product in Ranah Minang. Aqualitative design was applied in this case study. The respondents is farmers who produce brown sugar cane. The results of this study indicated that those farmers-brown sugar cane producers had a unique behavior in their business. Their decisios to produce brown sugar cane was depend upon their household requirement upon money income. By those reasons, the farmers-brown sugar cane producers will produce more if the price of this product was relatively low. On the contracy, the will reduce their product wherever the price of brown sugar cane was getting higher. These farmers decision in producing brown sugar cane was imfact not determined by the market demand, si that maximum production was not occur at the high in case of its demand. Conversely, the minimum production was also not occur during its demand decrease.

PENGARUH ARUS PENGELASAN METAL INERT GAS (MIG) TERHADAP KEKUATAN TARIK BAJA ST 37 DENGAN VARIASI ARUS LISTRIK (150, 200, 250 AMPERE Mukhnizar
Journal of Scientech Research and Development Vol 4 No 1 (2022): JSRD, June 2022
Publisher : Ikatan Dosen Menulis

Latar belakang dari penelitian ini adalah untuk mengetahui pengaruh variasi arus pengelasan terhadap sifat mekanik dan kekuatan tarik. Dimana masing-masing variasi yang digunakan 150 Ampere, 200 Ampere dan 250 Ampere. Pada dasarnya besar kuat arus yang tinggi akan menyebabkan terjadinya penembusan las yang semakin besar, karena dengan adanya penembusan yang besar mengakibatkan las bagian dalam semakin besar akan perpengaruh pula pada hasil pengelasan. Bahan yang digunakan baja karbon rendah, baja pelat ST 37 tebal 10 mm. Jenis kampuh yang digunakan yaitu kampuh V tunggal dengan sudut 60º, dengan menggunakan las Metal Inert Gas (MIG). Kawat las yang digunakan tipe (ER-70S-6). Kemudian spesimen dilakukan pengujian tarik. Dari hasil pengujian tarik dapat disimpulkan bahwa variasi arus pengelasan 150 Ampere lebih kuat digunakan untuk pengelasan baja karbon rendah ST 37 dengan tebal 10 mm dan menggunakan kampuh V dengan sudut 60º.

Perencanaan Mesin Pengupas Kulit Kacang Tanah Kapasitas 800 kg/jam Eka Satrya; Risal Abu; Mukhnizar Mukhnizar
AEEJ : Journal of Automotive Engineering and Vocational Education Vol 3 No 2 (2022): AEEJ : Journal of Automotive Engineering and Vocational Education
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/aeej.v3i2.137

This study aims to design a peanut peeling machine (pods) by utilizing an electric motor as a driving machine and a transmission system to continue rotation to a skin-peeling mechanism using a rotary type that drives a roller rotating shaft connected via a v-belt. The planning method in this research is the design of the peanut skin peeler machine, the method of planning elements and machine components, and making technical drawings. The results of this study are in the form of a Peanut Peeling Machine (pod) design, including the working principle of the Peanut Skin Peeler Machine, which is based on friction and surface pressure. Peanut Peeler Machine planning, and Peanut Peeling Machine technical drawings include: design/model, dimensions/size of machine components and elements, materials/materials, as well as instructions for the processing of each component/element of the machine. Penelitian ini bertujuan untuk merencanakan suatu mesin pengupas kulit (polong) kacang tanah dengan memanfaatkan motor listrik sebagai mesin penggerak dan sistem transmisi untuk meneruskan putaran ke mekanisme pengupasan kulit menggunakan tipe rotary yang menggerakkan poros pemutar roller yang dihubungkan melalui v-belt. Metode perencanaan dalam penelitian ini yaitu desain mesin pengupas kulit kacang tanah, metode perencanaan elemen dan komponen mesin, dan pembuatan gambar teknik. Hasil dari penelitian ini berupa rancangan mesin pengupas kulit (polong) kacang tanah, diantaranya prinsip kerja Mesin pengupas kulit kacang tanah yaitu berdasarkan gesekan dan tekanan permukaan roller pengupas (dilapisi karet) yang berputar terhadap kulit (polong) kacang tanah dan kisi Stator, spesifikasi hasil perencanaan mesin pengupas kulit kacang tanah, dan gambar teknik mesin pengupas kulit (polong) kacang tanah meliputi: desain/model, dimensi/ukuran komponen dan elemen mesin, bahan/material, serta instruksi proses pengerjaan masing-masing komponen/elemen mesin.

PERENCANAAN MESIN SERUT BAMBU KAPASITAS 500 BATANG/JAM Mukhnizar; Rivaldy Oktari Hidayat
Journal of Scientech Research and Development Vol 4 No 2 (2022): JSRD, December 2022
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v4i2.62

Bambu merupakan tumbuhan berbunga menahun hijau abadi dari subfamili bambusoideae yang termasuk famili poaceae. Bambu digunakan untuk membuat sumpit dan alat memasak lainnya seperti spatula serta kerajinan tangan berbahan baku bambu yang dapat dianyam. Pembuatan sebuah anyaman bambu membutuhkan lembaran tipis sebagai bahan baku anyaman. Pengembangan mesin penyerutan bambu diperlukan untuk membantu mempercepat proses tanpa harus melakukan penyerutan bambu secara manual yang membutuhkan banyak waktu. Prsoses produksi anyaman dilakukan dengan melicinkan atau mengubah bentuk benda yang tidak beraturan menjadi beraturan, sebelumnya proses penipisan batang bambu membutuhkan waktu 2 jam untuk mendapatkan hasil serutan-serutan bambu agar bisa dianyam untuk 1 buah kerajinan tangan itupun juga membutuhkan waktu hingga 5 jam waktu penganyaman. Perencanaan mesin serut bambu meliputi perencanaan elemen-elemen mesin seperti poros, pasak, puli, sabuk, bearing, gear sprocket, rantai, pegas serta terdapat komponen roll karet, mata pisau penipis, mata pisau pembelah, mata pisau pembulat dan kontruksi rangka sebagai tempat semua komponen dan elemen mesin itu terikat dan membentuk suatu mekanisme kerja mesin yang dapat mencapai tujuan melakukan penyerutan bambu, untuk mengetahui prinsip kerja mesin serut bambu, proses perencanaan mesin serta teknik perencanaan desain gambar teknik memakai software AUTOCAD. Hasil akhir pada proses perencanaan mesin serut bambu memungkinkan terjadinya proses penipisan, pembelahan bahkan membuat bulat seperti stik/tusuk sate benda kerja bahan baku bambu tersebut serta membuat gambar teknik mesin serut bambu meliputi desain/model, dimensi/ukuran komponen dan elemen mesin, bahan material, serta intruksi proses pengerjaan masing-masing komponen/elemen mesin dibuat dengan bantuan alat software AUTOCAD gambar dicetak dan dilampirkan sebagai pedoman pembuatan mesin.

Contribution of Pedagogical Competence and Transformational Leadership of the Principal to the Implementation of the Tasks of Design and Build Teachers at SMKN 1 Padang Melda Fajra; Jalius Jama; Sukardi Sukardi; Danyl Mallisza; Mukhnizar Mukhnizar; Oskah Dakhi
Edumaspul: Jurnal Pendidikan Vol 6 No 2 (2022): Edumaspul: Jurnal Pendidikan
Publisher : Universitas Muhammadiyah Enrekang

This study aims to reveal and analyze how much (1) the contribution of pedagogical competence to the implementation of teacher duties, (2) the contribution of principals' transformational leadership to the implementation of teacher duties and (3) the contribution of pedagogical competence and principals' transformational leadership to the implementation of teacher duties of SMKN 1 Padang both individually and together. This research uses a quantitative approach. The population is all teachers at SMKN 1 Padang totaling 89 people, while the sample is 56 people determined by Stratified Proportional Random Sampling technique and the strata used are educator certification and length of service. Data were obtained using a Likert scale questionnaire that had been tested for validity and reliability. The results of data analysis show that (1) pedagogical competence contributes significantly to the implementation of teacher duties by 19.2%. (2) principals' transformational leadership significantly contributed 8.2%, while (3) pedagogical competence and principals' transformational leadership together contributed 24%. Data analysis has shown that the three hypotheses can be accepted empirically. From the findings, it can be concluded that pedagogical competence and principals' transformational leadership are two independent variables that have a positive impact on the dependent variable of teachers' task implementation. To improve the implementation of the duties of teachers of SMKN 1 Padang, it is necessary to improve through pedagogical competence and transformational leadership of principals properly and responsibly.

ANALISIS PERFORMA HEAT EXCHANGER OIL COOLER UPPER TIPE M10-BFG PADA UNIT 1,2,3,4 PLTA SINGKARAK UNTUK TINDAKAN PEMELIHARAAN Mukhnizar; Risal Abu; Afdal; Azmil Azman; Didik Agung Nugroho
Journal of Scientech Research and Development Vol 5 No 1 (2023): JSRD, June 2023
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v5i1.88

ABSTRACT Heat Exchanger is equipment used to carry out the process of exchanging heat between two fluids, either liquid (hot or cold) or gas, where these fluids have different temperatures. Singkarak hydropower plant also uses a plate type heat exchanger with the code M10-BFG in operation. Serves to exchange heat in the oil used in the upper oil pot, which functions as a cooler and lubricant for the upper bearing and thrust bearing. Seeing the function of the upper and thrust bearings, which are two important bearings in the unit. A good maintenance process is needed on the plate heat exchanger to maintain the condition of the oil at working temperature, which is at 45-55 0C. Through this research, the authors analyzed the performance of the M10-BFG plate heat exchanger with the parameters of the actual heat transfer coefficient and monthly temperature trends. After doing research with quantitative methods through data collection and data processing, it was found that unit 4 has the highest actual heat transfer coefficient of 875.666-900.574 W, but has the shortest usage time, for 42 days based on the existing trending temperature. This is because in unit 4 the oil flow (870-900 l/minute) is below standard, and the size of the heat exchanger plate (55 cm) has shrunk far from the initial value (63 cm). So it is necessary to carry out corrective maintenance on unit 4. Meanwhile, the lowest actual heat transfer coefficient is found in unit 1 with a value of 706.797-770.027 W and the longest plate heat exchanger usage time is in unit 3, with an estimated 121 days before reaching the 55 0C alarm.

PENGUJIAN ALAT UJI PUNTIR Muhammad Rafly Ramadhan; Risal Abu; Mukhnizar; Afdal; Zulkarnain
Journal of Scientech Research and Development Vol 5 No 1 (2023): JSRD, June 2023
Publisher : Ikatan Dosen Menulis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56670/jsrd.v5i1.162

Alat uji puntir adalah suatu alat yang dirancang untuk mengukur seberapa besar gaya puntir yang dapat dilakukan saat melakukan pengujian dari suatu alat. Alat puntir terbagi dua macam, otomatis dan manual. Saat ini alat uji puntir manual masih ada yang menggunakan tenaga manusia untuk menjalankannya dengan cara memutar hendel dan juga masih manual dalam membaca jumlah putaran spesimen dan waktu puntiran. Dalam skripsi dilakukan pengujian alat uji puntir menggunakan motor daya 1 Hp dan putaran 1400 rpm, jumlah putaran spesimen menggunakan sistem elektronika (sensor). Tujuan pengujian alat uji puntir ini mengetahui hasil parameter pengujian. Proses pengujian alat puntir ini adalah : proses memasukkan kawat ke kepala puntir dan kepala tetap, proses menghidupkan tachometer, dan proses hidupkan mesin. Dari hasil pengujian alat uji puntir diperoleh parameter pengujian yaitu: Nilai torsi terbesar 84,04 Nm, Gaya terbesar 16.700 N, Momen puntir terbesar 42,01 N.m, Tegangan terbesar 878.947 N/m2, Regangan paling panjang 0,018 mm, Modulus elastisitas terbesar 29 ×.10-7 N/m2, Tegangan puntir terbesar 14.200 N/m2.

Analisis Kenaikan Temperature pada Turbine Guide Bearing untuk Pemeliharaan Periodik Unit 2 PLTA Maninjau Bagas Adi Pratama; Mukhnizar Mukhnizar; Zulkarnain Zulkarnain; Veny Selviyanty; Risal Abu
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 3 (2023): July 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i3.17093

Turbine Bearing is a piece of equipment used to keep the shaft rotating about its axis or to keep a linearly moving component on track. The operation at PLTA Maninjau also makes use of a Turbine Bearing with a Journal Bearing type. The turbine bearing of the Maninjau hydropower plant experienced an abnormality, with the bearing temperature rising from 60°C to 80°C. Using the fishbone diagram method and failure mode and effects analysis, the authors conducted a root cause analysis of the causes of the increase in turbine bearing temperature in this study (FMEA). The cause of the increase in. The cause of the increase in the temperature of the turbine bearing unit 2 of the Maninjau Hydropower Plant was found to be a misalignment caused by a small bearing clearance of 0.2 mm, which should have been 0.4 mm according to the design value, after conducting research using the observation method through data collection and data processing. And reduced cooling water effectiveness from 18.41% to 1.15%. As a result, corrective maintenance on Maninjau Hydropower Unit 2 is required.

Analisis Perbaikan dan Pemeliharaan Sistem Pendingin (Air Conditioner) Pada Mobil Jazz New Estomi Gowasa; Afdal Afdal; Veny Selviyanty; Risal Abu; Mukhnizar Mukhnizar
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 3 (2023): July 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i3.17096

In a new Honda Jazz car, there is a rotten smell coming from inside the AC cabin, the temperature is not cold and causes the windshield to fog up. The purpose of the research is to find out the causes of damage to the AC system and appropriate maintenance actions. The method used is primary data, namely by direct inspection it is known that the refrigerant parameters are low on the pressure gauge manifold device on both sides LO 0.6–0.8 kg/cm2 and HI 8–9 kg/cm2. Damage to the capillary pipe is leaking. The action taken is to replace the capillary tube components, so the temperature parameters become LO=1.5–2.0 kg/cm² and HI=14.5–15 kg/cm². Once the pressure on the compressor, LO=4–6 kg/cm² and LO=7–10 kg/cm². The temperature is hot in the vehicle cabin. After replacing the compressor Normal pressure LO=1.5–2.0 kg/cm² and HI=14.5–15 kg/cm². Unstable Condenser temperature, LO=15Psi. HI=300–350Psi. cleaning is carried out at the temperature parameters LO=25Psi and HI=150 Psi, normal conditions. The hot room temperature = 29.2ºC and the cleaning action is carried out, then the temperature becomes = 16.8ºC, the AC room temperature returns to normal.

Perencanaan Mesin Pembuat Serbuk Jahe Pungki Fernando; Abu Risal; Mukhnizar Mukhnizar; Afdal Afdal; Veny Selviyanty
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 3 (2023): July 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i3.17208

The ginger powder making machine is designed and simulated to make it easier to get ginger juice or ginger water for the body to consume. The process of making ginger powder consists of: Power planning for planning a ginger cutting machine Pd = 0.88 kw, Material shaft S30C, diameter ?24 and tensile strength 48 kg/mm2, Bearing type = 6205, two pulleys used, namely drive pulley = 80 mm and the driven pulley = 76.2 mm, the planning speed around the pulley is V = 5.861 m/s. belt length 502.4 mm = 19.77 inches. The shear stress on the 12 mm diameter bolt = 0.188 kg/mm2 and the shear stress on the 14 diameter bolt = 0.141 kg/mm2. The design tangential force on the pin is F = 204 kg and the shear stress on the post plan is ?_k= 2.04 kg/mm2 . Planning Gear box using a ratio of 1: 50, Planning a clutch flans using type FCL 90, Cutting speed of the blade V = 0.48 m/min.

Co-Authors Adami, Mukhlis Adi Candra Afdal Afdal Afdal Afdal Afdal Afdal Afdal Afdal Afdal, Afdal Afrionaldi Putra Amsal Amsal Antonnius, Antonnius Azmil Azman Bagas Adi Pratama Bio Oktonius Manurung Danyl Mallisza Didik Agung Nugroho Diva Puperta Hihamsyah Eka Satrya Estomi Gowasa Fadlan, Muhammad Fauzan, Idham Hardian Pratama Irpandi, Wahyu Ivonne Ayesha Jalius Jama Jeri Algusra Koto, Rahmat Desman Melda Fajra Muhammad Abdillah Muhammad Rafly Ramadhan OSKAH DAKHI Pungki Fernando Rahman, Hidayatur Risal Abu Rivaldy Oktari Hidayat Rizky Maulana Ryan Jufrizal Septiawan, Abel Sukardi, Sukardi Syukri Ahmadi Tio Bonardo Veny Selviyanty Widi Widi Yurnalis Zega, Toniman Zulkarnain Zulkarnain Zulkarnain Zulkarnain Zulkarnain Zulkarnain

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