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All Journal Jurnal Ekonomi dan Kewirausahaan Transmisi Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Media Mesin: Majalah Teknik Mesin JURNAL PENGABDIAN KEPADA MASYARAKAT Journal of Mechanical Engineering Science and Technology JOURNAL OF ARCHITECTURE AND URBANISM RESEARCH Adi Widya : Jurnal Pengabdian Masyarakat DE LEGA LATA: Jurnal Ilmu Hukum ASRO JOURNAL - STTAL Jurnal Karinov Community Development Journal: Jurnal Pengabdian Masyarakat Amal Ilmiah : Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian, Pendidikan dan Teknologi Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Borneo Student Research (BSR) BIOLOVA Automotive Experiences Research Fair Unisri Jurnal Pengabdian Kepada Masyarakat (J-ABDIMAS) Jurnal Kearsipan
Suprayitno Suprayitno
Universitas Negeri Malang
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BENTUK RAMBATAN API DAN CEPAT RAMBAT PEMBAKARAN BIOGAS PADA BERBAGAI KONDISI CAMPURAN Suprayitno Suprayitno
TRANSMISI Vol 9, No 2 (2013): Edisi September 2013
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jtmt.v9i2.4594

Abstract

Pemanfaatan campuran biogas dan udara dengan perbandingan tertentu dimasukkan dalam suatu wadah tertutupberukuran tinggi 90 cm, lebar 30 cm, dan tebal 2 cm. Campuran kemudian dinyalakan menggunakan percikan bungaapi dari elekroda menggunakan spark generator. Didapatkan mampu bakar biogas (flameability limit) pada rentang4 : 1 sampai 6 : 1 (perbandingan volume udara-biogas). Pada campuran 4:1 bentuk nyala beraturan, terang dan tebal.Pada campuran 5 : 1 menunjukkan perubahan yang tidak teratur, sedikit lebih redup dan tipis. Pada campuran 6 : 1memperlihatkan bentuk yang diskontinyu dengan nyala api yang sangat tipis sehingga sukar untuk diamati.Sedangkan kecepatan rambat api pembakaran juga bisa diamati pada jumlah gambar nyala api yang dapat ditangkappada sepanjang jarak lintasan yang sama. Dengan resolusi kamera sebesar 26 fps, maka cepat rambat yang lebihtinggi akan lebih sedikit gambar yang ditangkap pada panjang lintasan yang sama. Dari hasil pengukuran cepatrambat pembakaran kemudian dilakukan uji t dengan α = 5% didapat bahwa tidak terdapat perbedaan kecepatanrambat pembakaran antara campuran udara-biogas 4:1 dengan campuran 5:1. Kecepatan rambat pembakaran biogaspada campuran 4 : 1 dan 5 : 1 rata-rata 171 cm/detik. Sedangkan campuran terbaiknya didasarkan pada bentuk nyalaapi maka terjadi pada campuran volume udara-biogas 4 : 1 atau pada 20%volume biogas dalam ruang bakar.
PENGARUH VARIASI JARAK KONTAK TERHADAP KEMAMPUAN SENSOR MOUSE OPTIK Suprayitno Suprayitno
TRANSMISI Vol 3, No 2 (2007): Edisi September 2007
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jtmt.v3i2.4468

Abstract

Mouse optik bekerja dengan prinsip mendeteksi gambar pantulan sinar LED ke permukaan kontak danmenangkapnya dengan sensor CMOS lalu mengirimkan sinyal ke DSP untuk menginformasikan seberapajauh mouse telah berpindah. Dengan prinsip kerja seperti itu, mouse optik telah dipertimbangkan untukdigunakan sebagai sensor perpindahan gerak yang ekonomis. Sebagai suatu sensor perpindahan gerak,tentunya ada jarak kontak ideal agar tidak mengganggu gerak benda tersebut. Merujuk kembali terhadapprinsip kerja mouse optik, maka kemampuan sensornya akan sangat dipengaruhi oleh jarak kontak antarapermukaan dengan mouse optik. Penelitian ini bertujuan untuk mengetahui respon mouse optik sebagaisensor gerak pada berbagai ketinggian mouse optik dengan permukaan kontaknya (jarak kontak).Penelitian dilakukan dengan bantuan mesin CNC TU 3A. Perpindahan aktual dilakukan denganmenghubungkan mouse optik dengan meja mesin CNC TU3A, sedangkan perpindahan terukurdidapatkan melalui perubahan koordinat pada program AutoCAD. Variasi perpindahan dilakukan dari 0sampai 1 mm. Dua tingkat kecepatan perpindahan dilakukan dengan memprogram mesin CNC denganG00 dan G01 F50 atau masing masing setara dengan 600 mm/min dan 50 mm/min. Mouse optik yangdigunakan dengan kemampuan 800dpi dan 1500dpi, sedangkan kualitas permukaan ujinya menggunakanburam hitam, buram putih, transparan, dan reflektif.Mouse optik bekerja dengan baik pada permukaan buram berwarna putih dan menunjukkan linearitasyang tinggi ditunjukkan dengan koefisien korelasi yang tinggi (rerata 0.9926). Pada ketinggian mouseterhadap permukaan 0.5 mm mulai terjadi penyimpangan juga karena pengaruh kecepatan gerak dankualitas mouse yang dipakai. Namun secara umum, mouse optik telah menunjukkan kemampuannyayang bagus sebagai sensor perpindahan gerak dua dimensi.
PENGARUH METALLIC CATALYTIC CONVERTER TEMBAGA BERLAPIS CHROME DALAM MENURUNKAN EMISI GAS BUANG MESIN SEPEDA MOTOR EMPAT LANGKAH Sudirman Rizki Ariyanto; Retno Wulandari; Suprayitno Suprayitno; Pramuko Ilmu Purboputro
Media Mesin: Majalah Teknik Mesin Vol 23, No 1 (2022)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v23i1.16604

Abstract

Transition metals have emerged and have begun to be widely researched as alternative materials in the manufacture of metallic catalytic converters (MCC). The selection of transition metals is based on the availability of abundant materials in the market, besides that the price of transition metals tends to be cheaper when compared to PGM. Therefore, through this study, an analysis of the effect of chrome-plated copper MCC (CuCr) was carried out on CO and HC exhaust emissions. Emission testing is carried out under two conditions. The first condition is the condition where the test vehicle still uses a standard exhaust, while in the second condition the test vehicle uses a modified exhaust equipped with MCC CuCr technology. The test vehicle used was the 2005 Honda Supra Fit. The emission testing process was carried out based on the SNI 09-71118.1-2005 standard which was then compared with the Regulation of the Minister of the Environment, Number 05 of 2006. The research findings show that MCC CuCr is proven to be able to reduce exhaust emissions by an average reduction of 24% for CO emissions and 30% for HC emissions. The emission test results show that the measured CO emission is 1.68% Vol while the CO emission threshold is 5.5% Vol. Meanwhile, the measured HC emission is 1719 ppmVol while the HC emission threshold is 2400 ppmVol. Therefore, it can be concluded that MCC CuCr passed the emission test in accordance with the Regulation of the State Minister of the Environment number 5 of 2006.
Pembelajaran Pendidikan Jasmani secara terpadu di Sekolah Dasar Suprayitno Suprayitno
JURNAL PENGABDIAN KEPADA MASYARAKAT Vol 21, No 81 (2015)
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkm.v21i81.3449

Abstract

Pembelajaran terpadu merupakan sebuah wacana yang sudah diimplikasikan beberapa tahun ini. Keberadaan pembelajaran terpadu memberikan angin segar pada kerangka berpikir para guru sekolah dasar dalam inovasi pembelajarannya. Pendidikan jasmani sebagai salah satu mata pelajaran di sekolah dasar dapat menggunakan pembelajaran terpadu sebagai jalan mengurangi berbagai kekurangan dalam pembelajaran pendidikan jasmani. Pembelajaran terpadu pendidikan jasmani dapat berupa perpaduan dua atau lebih materi-materi yang ada dalam pendidikan jasmani, yang direalisasikan dalam suatu pembelajaran. Pembelajaran terpadu pendidikan jasmani dalam pendidikan jasmani dapat juga berupa perpaduan dua atau lebih materi-materi pendidikan jasmani dengan materi-materi mata pelajaran yang lain, seperti: matematika, bahasa indonesia, pendidikan agama, sains, pengetahuan sosial, dan kerajinan tangan dan kesenian.Pembelajaran terpadu melibatkan pengembangan semua aspek peserta didik sehingga sejalan dengan tujuan pendidikan nasional yaitu manusia utuh. Pembelajaran terpadu pendidikan jasmani memberikan suatu pemecahan berbagai masalah yang timbul selama ini mengenai pembelajaran pendidikan jasmani di sekolah dasar.
Kaji Eksperimental Alat Pengering Tenaga Surya Aktif Pemanasan Langsung (Direct Solar Dryer Active) Berbentuk Jajar Genjang Tipe Kabinet Suprayitno Suprayitno; Azridjal Aziz; Rahmat Iman Mainil
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The direct solar drying model of the parallelogram cabinet type is a dryer of parallelogram shaped, which is intended to produce a uniform temperature distribution, so that the drying results can be uniformly and faster. This research aims to conduct an experimental study of direct solar drying, type of cabinet parallelogram shaped. The dried material was bananas, a drying capacity of 8 kg. Data obtained from this research was the temperature, radiation intensity, and mass reduction in bananas. Based on the data obtained, the average temperature in the drying chamber was 35.18ºC to 59.56ºC. The highest temperature of 62ºC occurred in racks 8 and the lowest temperature of 34ºC occurred in rack 1. The highest mass reduction was 0.301 kg occurred in racks 8 and the lowest mass reduction was 0.237 kg occurred in the first rack. Based on data, the higher of temperature, the mass reduction in the banana would be faster.Keywords: Solar Dryer, Mass Reduction, Drying
The Effect of Multi-Extrusion Process of Polylactic Acid on Tensile Strength and Fracture Morphology of Filament Product Muhamad Syaifuddin; Heru Suryanto; Suprayitno Suprayitno
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 5, No 1 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v5i12021p062

Abstract

Polylactic acid (PLA) is one of the most used materials in FDM 3D Printing. Large-scale consumption of PLA on an industrial scale could cause environmental and efficiency problems. Thus, PLA waste and industry waste need to be recycled to limit excessive waste. This study aimed to investigate the change in mechanical property, morphology, and structure of mechanically recycled PLA. Recycling was performed 12 times using the extrusion process with an extrusion temperature nozzle of 170°C. The SEM, structural analysis, and amorphous-crystalline analysis used XRD. The results showed a gradual decrease of tensile strength from each recycle with a total of 20% (13.22 MPa). The decrease percentage equalled the number of recycling. After the 9th recycle, PLA experienced a drastic tensile strength decrease, in which the 12th recycle tensile strength had a 14% (8.17 MPa) reduction. The morphology analysis of the tensile test sample presented significant morphology change, in which morphology defects such as void, flakes, and cracks appeared after the 6th recycle. Although, until 12 times extrusion, it did not significantly affect the PLA phase shape. Mechanical recycle using a multi-extrusion process is not recommended exceeding six times
Robust Parameter Design of Shielded Metal Arc Welding (SMAW) for Optimum Tensile Strength Moh. Dedy Indra Setiawan; Yanuar Rohmat Aji Pradana; Suprayitno Suprayitno
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 5, No 2 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v5i12021p073

Abstract

Shielded Metal Arc Welding (SMAW), an arc welding process, is widely used in applications. In practice, SMAW is widely applied to the welding process on hollow square pipe. Performance expected from this welding is the tensile strength of weld joint. The tensile strength is influenced by parameters process which have possibility for an optimization process to become ‘robust’. Robust is a design which less sensitive to the effect of uncertain quantities or noise factors. Taguchi method is the most efficient optimization method which accommodates the noise factors effect and requires less experiment. This study is focusing on optimizing the welding process on hollow square pipe. Parameters process such as welding current (I), electrode angle (θ), root gap (d) and electrode type (E) are adopted as parameters design. Taguchi method are chosen as a strategy and L9 fractional orthogonal array are chosen as the design experiment, which only 9 experiment samples needed from 81 experiments that should have been carried out for full factorial design. The objectivity is to maximize the tensile strength of weld joint. Three replications of L9 fractional orthogonal array Taguchi had been performed to generate the tensile strength and estimates the fluctuation of the output caused by noise factors. This study found that the welding current of 100A (I), electrode angle (θ) of 90°, root gap (d) of 2 mm, and electrode type (E) of E7018 produce the optimum results. Tensile strength improved from this robust parameter design is about 98.39 MPa based on initial parameter design.
Camshaft Failure Simulation with Static Structural Approach Riduwan Prasetya; Andoko Andoko; Suprayitno Suprayitno
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 5, No 1 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v5i12021p047

Abstract

A failure happens within the camshaft of the minibus when the vehicle is in utilize. The camshaft was a fracture within the bearing between the primary cylinder exhaust valve and the second cylinder suction. This simulation aims to find the causes of camshaft failure utilizing the finite element method with a static structural approach, including simulations of deformation, strain, stress, fatigue life (stress-life and strain-life), and cracks. The method used in this paper is the finite element method with a static structural approach by ANSYS software. The camshaft material is a gray cast iron designed using Solidworks. Pre-processing includes meshing with a size of 3 mm. The value of loading force (1348.28 N) and torque (113400 Nmm) are fixed, and the boundary conditions are varied. Processing includes the process of computation and post-processing into a part that displays the results. The simulation results show that for all the deformation and strain values that are in the elasticity area of the material, the maximum and minimum stress which is below the strength of the material, the location of the maximum values of deformation, strain, and stress is not at the fault location. The simulation of fatigue life both in stress-life and strain-life results in infinite cycles, which is above 106 cycles, while the simulation of cracks results in a decrease in the cycle. Based on the simulation results with the above parameters to the camshaft, it was found that a failure was caused by a defect characterized by reduced fatigue life at the same loading conditions.
ANALISIS LAPORAN KEUANGAN UNTUK MENILAI KINERJA KEUANGAN (STUDI KASUS PADA KOPERASI PEGAWAI REPUBLIK INDONESIA UNIVERSITAS SLAMET RIYADI SURAKARTA) Suprayitno Suprayitno
RESEARCH FAIR UNISRI Vol. 3 No. 1 (2019): RESEARCH FAIR UNISRI
Publisher : Universitas Slamet Riyadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (539.051 KB) | DOI: 10.33061/rsfu.v3i1.2593

Abstract

Agar laporan keuangan bisa digunakan sebagai dasar penilaian oleh manajemen, laporan keuangan tersebut harus dianalisis lebih lanjut dengan metode atau tehnik analisis tertentu. Dengan menggunakan analisis rasio keuangan, maka dapat diketahui sehat atau tidaknya kondisi keuangan sebuah koperasi. Rasio-rasio yang dikelompokkan dalam rasio likuiditas, solvabilitas dan rentabilitas mampu menggambarkan kondisi kesehatan sebuah koperasi. Tolok ukur kesehatan koperasi didasarkan pada Keputusan Menteri Negara perasi dan Usaha Kecil dan Menengah No:129/Kep/M/ KUKM/XI/2002. Hasil perhitungan Current rasio tahun 2015-2017, Cukup Baik; Solvabilitas (Analisis Leverage), kurang baik dan Total Debt to equity ratio, Sangat Baik. Rentabilitas (Return on Asset (ROA)) masuk Klasifikasi Cukup Baik, sedangkan Rentabilitas Modal Sendiri, masuk Klasifikasi Baik.Kata kunci: Likuiditas, Solvabilitas, Rentabilitas, Kinerja
PENINGKATAN SKILL CALON WIRAUSAHA PETANI TOMAT MENGGUNAKAN TEKNOLOGI AGRO MANUFACTURING UNTUK MEMANFAATKAN SISA PANEN YANG TERBUANG Suprayitno Suprayitno; Nurhanifam Nurhanifam
Jurnal Pengabdian Kepada Masyarakat (J-ABDIMAS) Vol 1 No 1 (2014): Jurnal Pengabdian Kepada Masyarakat 2014
Publisher : Publisher UPT P2M Politeknik Negeri Malang

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Abstract

IBM Program Implementation united a concrete form of community service performed in order to transfer skills to prospective Producties Agro Manufacturing  entrepreneurial farmers are capable of processing tomatoes into Produkt Raw materials processed include: sauce, Jam, Jelly, & Candied Fruit tomatoes utilize relatively Results for harvest wasted.Post prospective entrepreneurs  successfully mastered the skill Producties processing tomatoes are good, they are expected to brave pioneering independence practicing / economy, besides that in the long term they are expected to create opportunities around Enterprises baggy citizens, who temporarily united the average dependent on the agriculture sector.After the briefing given for entrepreneurial Producties ability of the process, financial administration include therein well as managerial aspects of marketing, especially supported by Produkt Produkt-are already expected to have PIRT, they are expected to efficiently distribute the results of their production to the consumer market As well as the formal market ( Super Market in Mini Market). The last candidate entrepreneurs united  expected to diversify Results of production, making it more acceptable to consumers varied teeth.
Co-Authors . Pramono Achmad Taufiq Agus Sutanto Ahmad Dardiri Alwi Suddin Amalia Lusiana Aminnudin, Aminnudin Andoko Andoko, Andoko Arie Marbandi Arif Dwi Putranto Arif Triyanto Aripriharta Aripriharta Ariyanto, Sudirman Rizki Arlisah Amary Ata Syifa’ Nugraha Azridjal Aziz Beny Saputra Bili Darnanto Susilo Deo Widika Alamsyah Erdi Erdi ERNI WIDAJANTI Faqih Fadillah Fuad Indra Kusuma Ganie Ganie Handoko Handoko Heri Kiswanto Heru Suryanto Ika Liestianingsih Indri Robiatul Adawiyah Marsono Marsono Mia Cholvistaria Moh. Dedy Indra Setiawan Mudinillah, Adam Muhamad Syaifuddin Muhammad Afnan Habibi Muhammad Hersan Arifin Muhammad Yandi Pratama Nadya Syawitri Nala Rahmawati Nur Shasmitta Zaen Nurhanifam Nurhanifam Pradana, Yanuar Rohmat Aji Pramono Pramono Pramuko Ilmu Purboputro Rahmat Iman Mainil Ratna Ratna Retno Wulandari Ridho Riski Hadi Riduwan Prasetya Rohani Ganie Rohani Rohani Sakib Nurcholish Anshari Shavira Azzahra Sudirman Rizki Ariyanto Sujito Sujito Sukarni Sukarni Sumarno Sumarno Suprihatmi Sri Wardiningsih Syarifudin Dwi Prasetyo Tabita Tyasyarani Wara Sinuhaji Yanuhar, Uun Yoga Yuniadi Zory Satrio Nugroho