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All Journal Rekayasa Mesin DINAMIKA Jurnal Ilmiah Teknik Mesin Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Prosiding Seminar Nasional Riset Kuantitatif Terapan 2017 Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal Pengabdian Masyarakat Ilmu Terapan (JPMIT)

Samhuddin Samhuddin, Samhuddin

Program Studi Teknik Mesin Fakultas Teknik Universitas Halu Oleo, Kendari Kampus Hijau Bumi Tridarma Andounohu Kendari 93232

Author-ID : 512635

Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisa Mampu Redam Komposit Polyester Berpenguat Limbah Filter Rokok Prayudhi, Muhammad Mirdhad; Samhuddin, Samhuddin; Aksar, Prinob
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 8, No 4 (2023): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/enthalpy.v8i4.45154

Wastes that we often encounter easily is waste from cigarette filters, one example of its utilization is the utilization of wast .filter. filter cigarettes as a composite mixture, by utilizing materials originating from waste which are easy to obtain by utilizing cigarette filter waste as a sound absorbing material. this study aims to determine the composition of the composite mixture reinforced by cigarette filter waste on sound intensity and sound absorption coefficient. The production method is with a fraction of 30%: 70%, 44%: 56%, and 51%: 51%, which is the best composite fraction with respect to sound intensity values and sound absorption coefficient values, composite materials with a frequency of 510 Hz get sound intensity values the highest is the 30%:70% fraction of 104,867 dBa. and the lowest is the 51%:49% fraction, which is 96.676 dBa, and the highest sound absorption coefficient is the 51%:49% fraction of 0.196 and the lowest is the 30%-70% fraction, namely 0.129, so it can be concluded that the smaller the fiber fraction of the acoustic material of cigarette filter waste, the higher the sound absorption coefficient produced. The best sound absorption coefficient value is obtained for the material acoustic with a fraction of 51% :51% frequency of 510 Hz which is 0.196. Keywords: Acoustic, Boko, Composite, Noise, Waste.

PERENCANAAN POROS MESIN PEMISAH KULIT DAN BIJI KACANG HIJAU Andri, Muh.; Sudia, Budiman; Samhuddin, Samhuddin
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 4 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

This research aims to determine the shaft planning that is safe and good, the moment of twisting or torque, the diameter of the shaft. In this study designed using Autodesk Inventor 2017. Software The material used toplan the shaft is carbon steel for the construction of the machine and rod steel which is cold machined for the shaft with the symbol S55C with a tensile strength of 66 kg/mm2.The results of shaft planning calculationsshow that the power plan is 7.165 kw, moment of torsion or torque with shaft rotation n1 (3600 rpm) of 1,938,530 kg. mm, and for shaft rotation n2 (960 rpm) of 7,269.4489 kg.mm, and the shear stress allowed is5.5 (kg/mm2), and the shaft diameter obtained a value of 28 mm, while the shear stress obtained a value of 1.688 kg/mm2. From the results above it can be seen that the value of shear stress that occurs is smaller than the shear stress value of the permit (???? < ????????) where ???????? = 5.5 kg/mm and the value of ???? = 1.688 kg/mm2, so that it can be concluded that the size The planned shaft is safe enough.Keywords: Shaft design, safe and good shaft, torque or torque moment, shaft diameter.

Perancangann Alat Angkat Mesin Mobil Sistem Hidrolik Aswar, Muh; Sisworo, Raden Rinova; Samhuddin, Samhuddin
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 7, No 3 (2022): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

This lifting device is for lifting and lowering loads supported by truss mechanism and a hydraulic jack with a maximum lifting capacity of 480kg. The device focuses on lifting the car engines with a lifting mechanism consisting of strusses, a hydraulic jack capacity of 3 tons, and a chain package with hooks to hang the load. Method of this research is a library research as main sources to design the device. Outcome of this research is a design of lifting device for maximum lifting capacity of 400 k. Material of hook is steel carbon S45C with a maximum tensile stress of 13.26 kg/mm2 . Lifting chain is made of steel alloys Grade 80 with a maximum tensile stress of 187.37 N/mm2 . Truss is selected made of carbon steel S30C with a maximum compress stress of 442.47 kg/cm2 and all of the working stresses are below the allowable stress limits, thus the device is safe to be used.Key words: lifting, Design, Hydraulic

PERANCANGAN DAN ANALISIS PENGUJIAN KONDUKTIVITAS PANAS PADA TIPE MATERIAL PADAT Saputraa, Ardhii; Samhuddin, Samhuddin; Hasanudin, La
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 7, No 1 (2022): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Thermal conductivity is the ability of a materal to transmit heat from one place to another. The value of thermal conductivity is important to determine the type of good heat conductor and bad heat conductor. But the problem is how to know the value of the thermal conductivity of varios materials.This study aims to determine the value of the conductivity of various solid materials. The test is carried out using the research layout tool. The results of research conducted from various solid materials based on the value of the highest heat transfer area are found in composites with a value of 24.0349 cm2. The largest value of the melting ice flow rate with differential temperature was found in the brass sample with a value of 0.075 gr/s and the lowest in the composite sample with a value of 0.017 gr/s. The highest thermal conductivity value is found in the iron sample with a value of 0.358147 W/m k and the lowest is in the composite sample with a value of0.107522 W/m k.Keywords: Conductivity, Heat Transfer Rate, Differential Temperature

STUDI PEMANFAATAN LIMBAH ABU TERBANG BATUBARA (FLY ASH) DAN KALENG MINUMAN SOFT DRINK SEBAGAI PENGGANTI MATERIAL BAJA RINGAN Samhuddin, Samhuddin; Sudia, Budiman; Iqwal, La Ode
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 2, No 4 (2017): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

The purpose of this research is to know the effect of fly ash addition to the hardness and toughness ofmaterial produced. In this research, it is known that aluminum cans waste as a matrix and ash waste coal flyas reinforcement. The tools and materials used in the research are furnace, ladle, stircoast, blower, sand,pattern, waste cans and coal fly ash waste. This research procedure starts from the process of makingspecimens with alloy (%) aluminum-fly ash. Fariation of aluminum-fly ash alloy is 80%: 20%, 70%: 30%,60%: 40%. In Vickers hardness testing seen at the lowest Al-FA hardness level was on specimens withvariation Al 60%: FA 40% ie 49.78528 kg / mm² and highest Al-FA hardness was in specimens withvariation Al 80%: FA 20 % alloy that is equal to 60,25068 kg / mm². Meanwhile, on the toughness impacttest, the highest impact strength value is in Specimens with Al 60% variation: FA 40% alloy is 0.162 J / mm²and the lowest impact strength is in specimen from 100% Aluminum variation of 0.056J / mm².Keywords: Metal matrix composite, Aluminum, and fly ash

Unjuk Kerja Evaporator Pada Mesin Pendingin Dengan Siklus Adsorpsi Menggunakan Energi Surya Amusadar, Amusadar; Hasbi, Muhammad; Samhuddin, Samhuddin
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 6, No 1 (2021): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Energy needs in Indonesia continue to increase every year. The largest use ofenergy is in the industrial sector, where its needs reach 42.12% of the totalnational energy needs. To save energy, energy saving measures are needed in theindustrial sector so that the increase in energy demand can be restrained. So weconducted research on the performance of the evaporator in a refrigerationmachine with an adsorption cycle using solar energy. The purpose of this studywas to determine the working process of the evaporator with activated carbonrefrigeration and to determine the efficiency of the evaporator in the activatedcarbon pair adsorption refrigeration system. This research was conducted byobserving and recording the evaporator temperature of the refrigeration machineevery hour. The results of the research in three days of testing, namely, on the firstday the highest evaporator temperature increase was at 16.00 o'clock, which was33.2oC and the lowest evaporator temperature was at 07.00 o'clock, which was 25.1 oC. On the second day, the highest increase in evaporator temperature was at 16.00, which was 32.2oC and the lowest evaporator temperature was at 07.00, which was 23.8 oC. On the third day, the highest increase in evaporator temperature was at 36.4 oC and the lowest evaporator temperature was at 06.00,which was 24.5 oC.Kata kunci: Adsorption, evaporator, temperature

Perancangan dan Analisa Simulasi Pembebanan Chassis Sepeda Wisata Untuk Dua Penumpang Menggunakan Software Autodesk Inventor 2017 Salimin, Salimin; Samhuddin, Samhuddin; Adha, Ismail
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 3, No 3 (2018): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

This research is aiming to know the distribution of stress, strain, displacement as well as safety factor on bike tour chassis. The chassis was designed in Autodesk Inventor software and simulated using Autodesk Inventor software. Carbon steel and load of 120 kg, 150 kg, and 180 kg was used as material for the chassis. The results of this research indicate that maximum stress at the main frame can reach around 47,86 N/m2 in simulation and 45,83 N/m2 by manual calculation. On the other hand, the maximum stress can reach 2079×10 mm/mm in simulation and 2,29×10 N/m2 in from manual calculation. The maximum displacement happened on the frame is around 0,4684 mm in simulation while in calculation it can reach around 0,528. The maximum safety factor happened on the chasis is around 7,31 in simulation while in calculation it can reach around 7,63.

Co-Authors A.A. Ketut Agung Cahyawan W Abd Kadir, Abd Abd. Kadir Adha, Ismail Adha, Ismail Aksar, P Aksar, Prinob Aminur Aminur Andri, Muh. Asmin Asmin, Asmin Aswandi, Baso Aswar, Muh Ato, La Balaka, R Budiman Sudia, Budiman Darwin Darwin Darwis, Mardis Defi, Sry DWI SURYANTO Feliks Eldad Larobu Hasanudin, La I Nyoman Udayana Imran, Al Ichlas Imran, Nur Al Iqwal, La Ode Jaka Seru Dwi Saputra Jamiluddin, Jamiluddin Kadir Kadir Kusmardin, Kusmardin La Ode Ahmad Barata Laode Abdul Gamsir Lukas Kano Mangalla, Lukas Kano Lukman, Muh Rahmat Mangalla, Lukas K. Mariudin, Rachmad Misar, Misar MUHAMMAD HASBI Muhammad Zakaria Umar, Muhammad Zakaria Mulawarman Mulawarman Musadar Mappasomba PAISAL PAISAL Prayudhi, Muhammad Mirdhad Putra, Muhammad Idris R.Y.P, Lalu Junaedi Raden Rinova Sisworo Ramadhan, Muhammad Syahrul Ridway Balaka, Ridway Rustam Efendi Saleh, La Ode Muhamad Salimin Salimin, Salimin Saputra, Fahri Ari Saputraa, Ardhii Simatupang, Minson Sisno, Sisno SITTI ROSYIDAH, SITTI Sudarsono Syahrun, Muhammad Umar, Mazhfia Yusnidarsyah, C Yusuf, Muhammad Ridwan Zulvikar, Zulvikar

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