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Pengaruh variasi campuran bahan bakar tongkol jagung dan tempurung kelapa terhadap unjuk kerja tungku biomassa I.W. Joniarta; M. Wijana; A.A. Alit Triadi; I.B.K.T.H. Iswara; I.G.A.K.C. Adhi
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 8, No 2 (2018): Dinamika Teknik Mesin
Publisher : Universitas Mataram

Agricultural waste such as corn cobs and coconut shell can be used as alternative energy. Biomass as an alternative energy can be used as a fuel in the furnace. Corncob has low calorific value and density, so it is necessary to examine the combination’s effect of corn cobs and coconut shell toward the performances of biomass furnace.The gasification furnace was the development of a furnace design on previous research. Diameter of combustion chamber is 25 cm, diameter of free air duct and secondary air duct is 2 cm, and primary air duct is 1 cm. Combined corncob and coconut shell in sequence are 100%: 0%, 80%: 20%, 60%: 40%, 40%: 60%, 20%: 80%, 0%: 100%. Investigated parameters showing the furnace performance were boiling time, FCR, power input, power output, power loss and efficiency are boiling time, FCR, operating time, power input, power output, power loss and efficiency. Test of operating time were conducted by burning fuel until burned out. Then boiling time test were conducted by heated 1 liters water from ambient temperature to boiling (between 95oC - 97oC) on a 24 cm diameter pan.The results showed that the largest operating time (1317.33 Seconds), smallest FCR (2.249 Kg/hour), smallest power loss (19.532 kW), and the highest efficiency (8.19%) obtained at 0% : 100% combination. The fastest boiling time (157 Seconds) and the largest power output (1.828 kW) was obtained at 40%: 60% combination. While the largest power input (29.286 kW) was obtained at 60%: 40%.

PENGEMBANGAN PRODUK KURSI SUDUT PADA UKM PENGRAJIN BAMBU DENGAN METODE QUALITY FUNCTION DEPLOYMENT (QFD) (Study Kasus :UD.Tiga Putri di Gunung Sari, NUSA TENGGARA BARAT) I Made Suartika; A.A. ALit Triadi; Fira Dwika Aprentari Rayes
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 4, No 1 (2014): Dinamika Teknik Mesin
Publisher : Universitas Mataram

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The more demands of the consumers for quality product have made the industry develop product which can satisfy the customers. This study aimed at finding out the design process and the product development which observed the customer’s needs and wants, and developed the initial design to obtain the design which met customer’s wants and needs.This study employed QFD method to identify the Voice of Customers (VoC). VoC was obtained through questionnaire, distibuted to 90 customers from 3 UKMs, i.e. UD Tiga Puteri, and two competitor UKMs, UKM Debu and UKM Mia Bamboo Collection. The questionnare distribution was undertaken to find the lavel of the customer’s interest, so that the UKM needed to develop a new product which met the customers’ satisfaction.From the three studied design, the old design (A) and the two new designs (B and C), the new desigm of chair (C) was the most appealing to the customers, with the average grade of 4.26, and the least appealing was the chair with the design (A) with the average score of 3.54. As for the bamboo chair product development according to the priority for improvement were, respectively, finishing process with priority contribution of 5.7, the strength value with the priority contribution of 2.5, durability with priority contribution of 1.9, and the aspect with the lowest priority value was colour with the score of 0.9.

APLIKASI BREAK EVEN POINT PADA SISTEM OPERASIONAL KAPAL MOTOR PENYEBERANGAN RODITHA PT. ASDP INDONESIA FERRY (PERSERO) CABANG LEMBAR Made Wijana; A.A. ALit Triadi; Firza Febriandi
Dinamika Teknik Mesin Vol 4, No 2 (2014): Dinamika Teknik Mesin
Publisher : Universitas Mataram

This study is intended to analyze the feasibility operation KMP Roditha which owned by PT. ASDP Indonesia Ferry (Limited). Location of research in the trajectory Sheet - Padang Bai, was used the Break Even Point. Collecting a range of cost of KMP Rodita, therefore was known the operating costs, maintenance costs and income from the sale of tickets while one year. Stepsare used in this research is the analysis of quantitative data, where i would collect the data required in relation to the matter to be investigated, so that research results can be more reliable and credible. The results of this study indicate that KMP Roditha income in 2010 was Rp. 12,007,178,916, of a total of 504 trips. Break Even Point in 2010 occurred in the 5th month on 213 trips, so that KMP Roditha feasible to operate.

Komposisi bahan organik sebagai alternatif bahan gesek rem sepeda motor A.A. Alit Triadi; I Made Nuarsa
Jurnal Energi Dan Manufaktur Vol 10 No 1 (2017): April 2017
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstrak: Semua produk komponen kendaraan di masa depan mengikuti regulasi ramah terhadap lingkungan (environtmental friendly), bahan baku dan dalam pemanfaatannya semaksimal mungkin tidak berbahaya bagi mahluk hidup. Demikian pula pada produk kampas rem (brake shoes) harus mengikuti regulasi tersebut. Tujuan yang ingin dicapai dari penelitian ini adalah diperoleh bahan gesek rem alternatif yang ramah lingkungan dan memenuhi aspek teknis. Metode yang akan digunakan untuk mencapai tujuan tersebut adalah dengan melakukan eksperimen dilaboratorium. Langkah pertama, adalah melakukan variasi eksperimen penggunaan material kampas rem yang berbasis organik dalam bentuk spesimen uji (Komposisi I : tempurung kelapa 45%, serbuk kayu 20%, serabut kelapa 10%; Komposisi II : tempurung kelapa 35%, serbuk kayu 20%, serabut kelapa 20% ; Komposisi III : tempurung kelapa 25%, serbuk kayu 20%, serabut kelapa 30% . Adapun perekat yang digunakan adalah resin fenolic dengan persentase 25% untuk semua komposisi. Berdasarkan penelitian yang telah dilakukan didapat kuat tarik terendah 0,265 MPa pada benda uji komposisi II. Kuat tarik tertinggi 0,588 MPa pada komposisi benda uji III. Kekerasan terendah 43,141 HBN pada benda uji komposisi II, kekerasan tertinggi 97,417 HBN pada benda uji komposisi III. Keausan terendah 0,022 mm3/s pada benda uji komposisi III, keausan tertinggi 0,04 mm3/s pada benda uji komposisi II. Kata kunci: Produk, Kampas rem, Sifat mekanik, organik, ramah lingkungan Abstract: The components of the vehicle in the future have to follow the eco-friendly regulation, where the utilization of the raw materials as much as possible isnot harmful to the environment. Likewise, the brake productssuch brake shoes must follow these regulations. The aim of this researchis to provide an eco-friendly brake shoes belong to the technical aspects. Therefore laboratory experiments were established by arranging the composition of materials brake-based organic. The composition of each brake shoes that consists of coconut shell, sawdust, coconut fibers and adhesivewere arranged. It was obtained the lowest and highest tensile strength, hardness, and wearness for each brake shoes depend on the compositions. Keywords: Brake shoes, mechanical properties, organic based material, eco-friendly

APLIKASI BREAK EVEN POINT PADA PEMBUATAN ROTI Studi Kasus: Usaha Kecil Menengah (UKM) Roti (Rotiku Rotimu) Desa Babakan Made Wijana; A.A. ALit Triadi; Muhammad Kholiq
Dinamika Teknik Mesin Vol 5, No 1 (2015): Dinamika Teknik Mesin
Publisher : Universitas Mataram

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In recent years many companies both micro and macro level national and international emerging. As UKM (Usaha Kecil Menengah) have an important role in opening new jobs and boost economic growth of a region. With the development of business world has been brought towards the increasingly fierce competition. That businesses are required to conduct an economic analysis that can help entrepreneurs to consider actions proposed in choosing the alternatives or strategic decision.This research aimed to analyze the feasibility of the operation of UKM bread (my bread your bread) Babakan Village by using BEP (Break Even Point).Location research Babakan Village, District Cakranegara, West Lombok. By collecting various kinds of costs of making bread among other fixed costs and variable costs as well as to record income from the sale of bread in a period of 1 year. Examples of fixed costs is the cost of equipment, maintenance costs, the cost of building and examples of variable costs is the cost of raw materials, the cost of operation of the device, the cost of salaries, the cost of packaging.The results of this research indicate that UKM income Bread (my bread your bread) for 1 year is Rp. 912,000,000.00 of the total production of 1.14 million pieces of bread. This UKM bread achieve the BEP (Break Even Point) occurred in the month 4th at a fixed cost is Rp.30,250,733,33 and VC (Variable Cost) is Rp.212,240,114,71 on the amount of bread produced 303114 fruit bread with a TC (total cost) Rp.242,490,848.04. So that UKM Bread (my bread your bread) feasible to be operated. With the increase in the selling price of Rp.850.00 fried bread resulting increase in profit of Rp57,000,000.00 while the selling price of Rp.750.00 fried bread resulted in a decrease in profit of Rp.57,000,000.00 while equally produce 1.14 million pieces bread. By lowering the variable costs, employers can accelerate the achievement of breakeven levels (Break Even Point).

STUDI KELAYAKAN PENGGUNAAN MESIN DIESEL DENGAN METODE BREAK EVEN POINT (BEP) DAN ANALISIS SENSITIVITAS PADA PLTD (Studi Kasus : PT PLN Persero Sektor Pembangkitan Lombok PLTD Ampenan) Made Wijana; A.A. Alit Triadi; Lalu Syahrul Anwar
Dinamika Teknik Mesin Vol 6, No 1 (2016): Dinamika Teknik Mesin
Publisher : Universitas Mataram

This study intended to analyze the feasibility of the use of the Power Plant (PLTD) of Ampenan using the break even point (BEP) and sensitivity analysis. That there are several alternatives that can be taken are: first, if the use of the selling price to the public's ability to Rp. 800 per kWh and a subsidy of Rp. 29.758.612.278 per month, then power plant will have a turnover in the month to 12 to earn a revenue of Rp. 159.148.857.478. Secondly, if the use of the selling price to Rp. 900 per kWh and a subsidy of Rp. 28.100.809.978 per month, then power plant will have a turnover in the month to 12 to earn a revenue of Rp. 179.042.464.663. Thirdly, if the use of the selling price to Rp. 1000 per kWh and a subsidy of Rp. 26.443.007.678 per month, then power plant will have a turnover in the month to 12 to earn a revenue of Rp. 199.936.071.847. Then the results of research using sensitivity analysis to changes in the initial investment is known that the increase in initial investment 600,83% below power plant is still feasible to operate.. But the power plant would not be feasible to operate when the increase 600,83% above the initial investment.Furthermore the sensitivity analysis to changes in income are known to decrease in revenue of less than 85,73% of power plant is still worth operating. But if the decline in revenue was down more than 85,73% power plant operation is not feasible.

PENENTUAN WAKTU STANDAR PENGGANTIAN OLI SHOCK DENGAN TsA-1 (TOOL SHOCK ABSORBER) DI BENGKEL PT. ASTRA INTERNATIONAL TBK-HONDA SALES OPERATION MATARAM I Made Suartika; A.A. Alit Triadi; I G.N.K. Yudhyadi; Sahram
Energy, Materials and Product Design Vol. 1 No. 1 (2022): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

Honda Sales Operation Mataram is a company engaged in distribution, retail and vehicle maintenance workshops. Existing workshops become a job for some communities and help improve the economy of the community. It is an important concern considering that it is the mechanics who are the main spears in service. From this, a company needs human resources that are able to work effectively and efficiently. To produce human resources that work effectively and efficiently, proper human resource planning and management is needed to encourage the achievement of the company's vision and mission. In planning and managing time it is necessary to take measurements of working time and update existing resources or the need for a tool to accelerate the pace of productivity in the company. One of them is in the oil shock and seal shock changes, and made TsA-1 (shock absorber tool) to make it easier for mechanics to work and know the comparison of time in completing a job, where the normal time obtained by using ordinary tools in oil shock changes is 39.38 minutes and the normal time obtained using TsA-1 (shock absorber tool) in shock oil change is 33.52 minutes. So the mechanic is faster to do his job using TsA-1 (Tool shock absorber), where the time difference is 5.86 minutes. The standard time obtained using a regular tool is 41.45 minutes and the standard time using TsA-1 (tool shock absorber) is 35.28 minutes. Mechanics using the TsA-1 (shock absorber) tool are 6.17 minutes faster than regular tools. And for the replacement of seal shock obtained a normal time of 53.36 minutes with a regular tool, 51.70 minutes using TsA-1 (Tool shock absorber). Mechanics are faster to do their work in 1.66 minutes using TsA-1 (Tool shock absorber). The standard time of seal shock replacement with a regular tool is 56.16 minutes, and 54.42 minutes using TsA-1 (Tool shock absorber). Mechanics using TsA-1 (shock absorber) are 1.74 minutes faster than regular tools.

PERANCANGAN CHASIS KENDARAAN LISTRIK UNIVERSITAS MATARAM A.A. Alit Triadi; Tri Rachmanto; I Made Mara; I G. N. K. Yudhyadi; Nur Kaliwantoro
Energy, Materials and Product Design Vol. 2 No. 1 (2023): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/empd.v2i1.1956

Chassis is the main component of the vehicle that functions to support the engine, body, suspension system, electrical system and driver. Chassis is one part of the vehicle that has an important role so careful planning is needed in its manufacture. Chassis must be strong and sturdy to support the load of the driver, electric motor and accessories. In addition, the chassis must also be light so as not to overload the work of the electric motor and be able to go through various road conditions. The vehicle body is its function to shape the vehicle and also protect the people inside. In this design, steel and aluminum materials are used, then simulated using the Autodesk Inventor software. The goal is to determine the Von Mosses stress value on the chassis design. AISI 1018 steel material with a load of 700 kg, 800 kg, and with a load of 900 kg obtained a value of 5.56. The safety factor obtained is still safe because it is above the safety factor for industrial construction design, namely 4. Aluminum 6061 material with a load of 700 kg, 800 kg and with a load of 900 kg obtained a value of 7.46. The safety factor obtained is still safe because it is above the safety factor for industrial construction design, namely 4.

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