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Jurnal Ilmiah Poli Rekayasa

JPR
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Published by Politeknik Negeri Padang

ISSN : 18583709 EISSN : 26853922 DOI : 10.30630/jipr

Core Subject : Education,

Education

Jurnal Ilmiah Poli Rekayasa adalah jurnal ilmiah yang diterbitkan 2 edisi dalam setahun, bulan April dan Oktober. Terbit sejak tahun 2005. Fokus Kajian jurnal ini adalah Fokus kajian artikel dalam JPR mencakup Mechanical Engineering, Civil Engineering, dan Electronica, Electricty dan Telecomunication EngineeringLingkup Jurnal Ilmiah Poli Rekayasa meliputi : 1) Energi terbarukan (rewnable energy), 2) Inovasi kendaran bermotor hemat BBM, 3) Material Maju, 4) Emisi dan pembakaran motor bakar, 5) Rekayasa termal dan fluida, 6) Rekayasa power plant, 7)Material komposit, 8) Biomaterial, 9)Teknologi pengujian tak merusak (Non Distruction Test/NDT), 10) Kontrol dan mekatronika, 11) Planing untuk pengurangan resiko bencana, 12) Sistem transportasi antar moda, 13) Rekayasa konstruksi, bangunan, jembatan dan Jalan, 14) Manajemen daerah aliran sungai, air tanah, sedimen dan waduk, 15) Remote Sensing Harap baca panduan ini dengan seksama. Penulis yang ingin mengirimkan artikel ke Jurnal Ilmiah Poli Rekayasa, harus mengikuti panduan penulisan. Jika artikel yang dikirim tidak sesuai dengan panduan penulisan atau ditulis dalam format yang berbeda, maka akan DITOLAK oleh editor sebelum ditinjau lebih lanjut. Para editor hanya menerima artikel yang memenuhi format yang ditetapkan. Artikel ditulis dalam bahasa indonesia. Jurnal Ilmiah Poli Rekayasa menggunakan prosedur penilaian Double Blind. Dimana antara penulis dengan mitra bestari tidak saling mengenal identitasnya masing-masing. Silahkan kirimkan artikel anda dan untuk unduh Template DI SINI Etika Publikasi dapat dilihat pada tautan berikut ini : ETIKA PUBLIKASI.

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Articles 8 Documents

Search results for , issue "Vol 9, No 2 (2014)" : 8 Documents clear

Kestabilan Global Endemik Model Epidemi SEIR Roni Tri Putra; Sukatik - -; Sri Nita -; Yandraini Yunida -
Jurnal Ilmiah Poli Rekayasa Vol 9, No 2 (2014)
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

In this paper, it will be studied global stability endemic of equilibrium points of a SEIR model with infectious force in latent, infected and immune period. From the model it will be found investigated the existence and its stability of points its equilibrium. The global stability of equilibrium points is depending on the value of the basic reproduction number If there is a unique endemic equilibrium which is globally asymptotically stable.

Studi Pemanfaatan Abu Tanah Liat Bakar Asal Gunung Sarik Padang Sebagai Filler Pada Campuran Hot Rolled Sheet (HRS) – WC Fauna Adibroto -
Jurnal Ilmiah Poli Rekayasa Vol 9, No 2 (2014)
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Together with advancement in transportation technology, there is a need to study current technology on transportation. Various research have been conducted on pavement to achieve a strong, durable, and economic construction. One of the constructions is Hot Rolled Sheet – Wearing Course (HRS-WC) or widely known as thin concrete asphaltic layer. Concrete asphalt is a flexible pavement with high structural strength and widely used in Indonesia as road pavement. Therefore the characteristic of the mixture is highly affected by type and percentage of filler in the mixture. In the last two decades, design methods are developed based on analytical method which require stiffness modulus and structural values of the material. During this period many research have been conducted on the methods to improve performance of asphaltic concrete by modification of materials as well as material substitution.The main objective of this study is to evaluate the impact of substitution of standard filler of HRS-WC with clay mineral from Gunung Sarik, Padang, on Marshall properties parameters such as stability, density, VIM, VMA, VFB, flow, and MQ. This aim is achieved by analyzing Marshall properties of the mixtures.Our study shows that the substitution of standard filler with clay mineral from Gunung Sarik with variations from 25%, 50%, 75%, and 100% has no significant impact on optimum asphalt content and other Marshall properties such as Density, VIM, VMA, and Flow. These values do not vary from mixtures using standard filler.

Pembuatan Alat Pengadukan Pupuk Kompos Berbasiskan Mikrokontroler Roza Susanti -
Jurnal Ilmiah Poli Rekayasa Vol 9, No 2 (2014)
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

In fabrication of compos mixing machine based on microcontroller, an AC motor 1 phase used to rotate the container and it will help the farmer work in stirring and mixing compos material. In order to display the process, a LCD is use in this fabrication.The design of this machine is divided into two categories, hardware design and software design. The hardware consist of an AVRATmega 8535 microcontroller minimum system , a LCD, Keypad, an AC Motor 1 phase, a Capacitor, and a relay. In the order hand for software design, a Code vision-AVR program language as the program application. The data analysis techniques are conducted by testing the machine performs. Not only by measuring operating voltages, but also testing the microcontroller with a program application.This machine is based on microcontroller AVRATmega8535 and using C language in programming. In order to display the mixing output, time setting is displayed on LCD. The optimum result started from the first 10 seconds ON condition and the second of 10 seconds ON condition should have a 30 seconds time off.

Gerusan Lokal yang Terjadi di Hilir Bendung dan Upaya Pengendaliannya Wisafri - -
Jurnal Ilmiah Poli Rekayasa Vol 9, No 2 (2014)
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Majarity of damages on the dam construction in Indonesia is caused by continuous local scouring at the end side of the dam construction. It grows and reach its lower/bottorm part. It could results in degradation in the dam operation safety. This local scouring was caused by major water flowing passing the dam where there is a high difference level between the top and the end of the dam. Furthermore, it generates inbalancing water flow speed and additional water turbulence. There are different approachs to prevent such damage, and for example by providing one or more additional construction at the end part of the dam. This structure is designed and installed at the bottom part of the dam. Various empirical functions have been developed to design this structure, and one of them is developed by Lacey. The function is reprsented by D = 0.47 * (Q/F)1/2 (D= scouring depth, Q= Discharge, F= the size of the sand particle). However, that function has some limitation. For examples are the local river and dam construction characteristics. Therefore, it is required to be validated by developing a model of dam contructed in a laboratory. Experiments was undertaken by using the model with different characteristics of water flow in order to investigate the scouring pattern, and than method prefentif work

Menentukan Kematangan Buah Manggis Menggunakan Metode Summary Squared Error (SSE) yang Diaplikasikan pada Belt Conveyor Pemisah Buah Hari Risanti Saputra; Firdaus - -; Derisma - -
Jurnal Ilmiah Poli Rekayasa Vol 9, No 2 (2014)
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

All parts of mangosteen are useable. In order to obtain some qulified mangosteen, it is need to make a belt conveyor sorting system which is able to sort based on it’s diameter and maturity. To obtain the maturity decision it is used Sum Squared Error (SSE) methode which find the minimum error of image RGB value between mangoosten rind color and the color templates. When need to derive the diameter, it is utilize the hough circle transform method.The results give 86% accuracy of maturity detection, 10.9% error accuracy of diameter measurements when mangosteen stalks are up and 3.4% error in diameter value when mangoosteen stalks are down .

Kaji Eksperimental Pengunaan R22 dan R410A Berdasarkan Variasi Laku Aliran Massa Pada Mesin AC Dian Wahyu -; Nasrullah - -; Khairul Amri -
Jurnal Ilmiah Poli Rekayasa Vol 9, No 2 (2014)
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

The development of the use of air conditioning machines (AC machines) is very high , due to the increased consumption of electricity for household needs are also increasing . Based on field observations of R22 refrigerant is still widely used in commercial air conditioning machines , where the refrigerant has properties that are not friendly to the environment . R410A refrigerant has been recommended to replace worn R22 . It became one of the rationale for conducting the assessment directly to efforts to reduce electricity consumption due to the use of air conditioning machines in the household and the efforts to preserve the environment . The research was conducted on a commercial air conditioning machines by testing the engine for both types of refrigerant ( R22 and R410A ) . Testing the engine characteristics , tested by varying the refrigerant mass flow rate for both refrigerants . The test results showed , electricity consumption ( compressor power ) for the use of both types of refrigerants is similar but uses R410A refrigerant produces a greater cooling effect than by using refrigerant R22 . In Overall effect of the variation of mass flow rate for both refrigerants clearly evident , the increase in mass flow rate causes enhancement of several variables such as the increase in compressor power , cooling effect , the effect of heat release , but for the coeficient of perfomance ( COP ) , the addition of the mass flow rate after COP The optimum value of the COP does not increase anymore . In this study, the highest COP values obtained in the refrigerant mass flow rate 3.4 g / s for R410A and R22 for 1.9 has the highest COP of 1.7 at a flow rate of refrigerant mass 3 g / s . For maximum cooling impact , generated by 0.502 kW to 0.572 kW usage for R22 and R410A.

Pengembangan Mesin Pencacah Tandan Kosong Sawit (TKS) dengan Metode Pemotongan Crusher Junaidi - -; Anwar Kasim -; Aidil Zamri -; Sir Anderson -
Jurnal Ilmiah Poli Rekayasa Vol 9, No 2 (2014)
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Palm empty fruit bunches (EFB) fiber content ± 70 % and can be used for elastic fiber, matrix, mattresses, rugs and raw material fiber -based composite board products, but until now has not been utilized to the fullest . The problem is not the availability of processing unit generates EFB fiber in small scale . One of them is the processing unit thrasher EFB. EFB counter technology that exists today is a large scale that can only be owned by the oil palm industry with a capacity of ± 4,124 kg/hour. For small-scale fiber industry needs a minimum engine capacity of census enumerators ± 300 kg/hour, but this machine is not yet commercially available.In general, the purpose of this research is small scale EFB cutting machines with a capacity of 200-300 kg/hour, the design parameters and identify optimum operating conditions for each component with the technical test of the prototype. From the results obtained machine design an engine capacity of 300 kg/hour, with a few major components, namely counter unit, unit funnel in and out, frame and drive unit . From the results of design calculations obtained engine power 15 hp motor drive with 1450 RPM rotation with 3 phase. From the results of the testing machine in the first enumeration results obtained by the size of the pieces of shredded EFB ± 7 x 7 ( cm ), while the second enumeration stage shredded EFB size becoming smaller ± 3 x 3 ( cm ).

Kajian Kelayakan Struktur Bangunan Pasca Kebakaran (Studi Kasus Gedung Pasar Koppas) Kota Padang Elvi Roza Syofyan; Syaiful Amri -; Munafri Alwys -
Jurnal Ilmiah Poli Rekayasa Vol 9, No 2 (2014)
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

In a feasibility study of the structure after the fire ( Case Study Building of Pasar Koppas in Padang ) . To obtain preliminary data, building data includes tracking information about the building construction has been done. Then visual inspection includes examination of the structural system of the building and non-structural components, as well as the configuration of the geometry component of the structure. Measurement of the building is intended to determine the configuration of the building . It can also serve as a confirmation of the existing building geometric conditions . Later examination of the damage structure and non- structural components by visual observation . Field trials conducted to obtain the data quality of the material structure of the building, with a non destruxctive and destructive . This activity is a test of the quality of the concrete surface with a hammer concrete test, concrete homogeneity measurement, measurement of the diameter and spacing of reinforcement, concrete cored drill with the core drill tools, observations reinforcement fatigue . While in the laboratory to test the compressive strength of the concrete core and reinforcement tensile test. Taking photographs of the condition of the buildings, structural components and non-structural components for further examination to determine the location of the damage, as well as a guide to determine damage level of the building, in addition to the photographs can serve as documentation . Then the data evaluation and analysis of the structure of the building . From the results of the evaluation and analysis of the feasibility of building structures from Pasar Koppas could be concluded, that the structure and function of the building is still viable . For the convenience of occupancy necessary to repair or retrofitting the proper manner and method by the Government of Padang City.

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Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
jpr@pnp.ac.id

Editorial Address
Limau Manis , Padang. Sumatera Barat - Indonesia

Location
Kota padang,

Sumatera barat

INDONESIA