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Jurnal Teknik Mesin
Published by Institut Teknologi Padang
ISSN : 20894880     EISSN : 25988263     DOI : -
Core Subject : Engineering,
Mechanical Engineering
Jurnal Teknik Mesin (JTM) is a journal aims to be a peer-reviewed platform and an authoritative source of information. We publish original research papers, review articles and case studies focused on mechanical engineering and other related topics. All papers are peer-reviewed by at least two referees. JTM is managed to be issued twice in every volume (April and October).
Arjuna Subject : -
Articles 8 Documents
 1 
Search results for , issue "Vol 8, No 2 (2018)" : 8 Documents clear
Basic Dual-Arm Manipulator Kinematics Using Forward Kinematics Method and Aided by Autodesk Inventor Asmara Yanto
Jurnal Teknik Mesin (JTM) Vol 8, No 2 (2018)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

This work aims to simulate the kinematics of a basic dual-arm manipulator by using the forward kinematics method and aided by the Autodesk Inventor software. Dual-arm manipulator consists of 7 joints and 6 links. One base link, one shoulder link, two right arm links and two left arm links. Each link is designed with the following length: 310 mm length of link base, 580 mm length of shoulder link, 280 mm length of the first right arm link and left arm link, 222 mm length of the second right arm link and left arm link. The degree of freedom of the dual-arm manipulator is five rotations (5R), namely R1 for base link and shoulder link, R2 for the first left arm link, R3 for the second left arm link, R4 for the first right arm link and R5 for the second right arm link. Parts and assembly of the dual-arm manipulator are designed with Autodesk Inventor. Dual-arm manipulator motions were simulated in two types of trajectory planning. From the simulation for both trajectory planning, the positions of ended left arm and right arm for each step of trajectory planning were visualized and defined.
Analysis of Current, Filler Metal, and Groove on Tensile Strength and Hardness of Dissimilar Welding Using Gas Tungsten Arc Welding (GTAW) Eriek Wahyu Restu Widodo; Vuri Ayu Setyowati; Suheni Suheni; Amang Kuswanto; M. Wiji Santoso
Jurnal Teknik Mesin (JTM) Vol 8, No 2 (2018)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

Dissimilar welding commonly used on many industries, for example power plan field. This paper presents the investigations carried out to study the influence of current, filler metal, and groove on 304 Stainless Steel to AISI 1040 Carbon Steel dissimilar joints. Gas Tungsten Arch Welding (GTAW) was conducted to join the both of base metals. 100 and 120 Ampere of current were conducted on this research, V and double-V groove with 70o of the angle as well. The maximum hardness was obtained 623.2 HVN of ER 70S-6 filler metal with 120 A of current and V groove. While the maximum tensile strength was obtained from the joint using ER 308L with 100 A of current and V-groove of 673.74 MPa. The HAZ region was obtained from the joint using double-V groove was wider than HAZ region of joint using V-groove according the macrostructure image of the joints.
The Potential of Brantas River Iron Sand as a Source of Silica and Calsite Materials Ah Sulhan Fauzi; Yasinta Sindy Pramesti
Jurnal Teknik Mesin (JTM) Vol 8, No 2 (2018)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

Brantas River is the second longest river in Java after Bengawan Solo, flowing from Malang, Blitar, Tulungagung, Kediri, Jombang and Mojokerto. In Mojokerto Regency, the river become two branches, the Mas River (towards Surabaya) and the Porong River (towards Porong, Sidoarjo Regency). Brantas has a watershed area (DAS) covering an area of 11,800 km2 or ¼ from the area of East Java Province. The length of the main river 320 km flows around a still active volcano, Mount Kelud. The extent of the Brantas watershed certainly has the abundant potential of iron sand. But the use of Brantas river sand is still limited as a building materials. Even though there are so many ingredients of iron sand such as silica and calsite that can be used for the benefit of others. This research aims to find or identify the content of oxide elements found in iron sand from the Brantas river. The samples of iron sand extracted using permanent magnets were then identified through XRD and SEM tests. XRD results show the content of Calcium Aluminum Silicate (Al2CaO8Si2), magnetite (Fe3O4), Magnesium Vanadium Oxide (Mg0,966 (V1,64Mg0,36) Mg0,105O4) and Sodium Zinc Iron Phosphorus Oxide (Na (Zn0,8Fe0,2) PO4).
Surface Roughness Analysis in Turning of AISI 1045 Steel with Anova and Scheffe Test Am Mufarrih; Hesti Istiqlaliyah; Mohammad Zaenal Fanani
Jurnal Teknik Mesin (JTM) Vol 8, No 2 (2018)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

Turning process is a very important machining process in the manufacturing industry. The quality characteristics of a turning machining product can be seen from the level of surface roughness carried out in the turning process. The purpose of this study was to determine the effect of spindle speed, feeding and the main cutting angle on surface roughness. Surface roughness measurement using a surftest SJ-301. The material used in this study is AISI 1045 steel. While analysis of variance (ANOVA) is used to process data. The results showed that the lowest surface roughness can be achieved at spindle speed of 765 rpm, feeding of 0.15 mm / rev and main cutting angle of 85. Data analysis explained that the spindle speed, feeding and main cutting angle had a significant effect on surface roughness. Increased spindle speed, feeding and main cutting angle will reduce surface roughness. The scheffe test results also show contrasting results between the variables studied.
Flying Time Of Quadcopter Based On Green Composites Material Mastariyanto Perdana; Nurzal Nurzal; Syahrul Firdaus; Rozi Saferi
Jurnal Teknik Mesin (JTM) Vol 8, No 2 (2018)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

Application of green composites material is aerial egineering. Advantages of green composites material are lightweight and relatively strong. This reason that makes green composites can be applied in Unmanned Aerial Vehicle (UAV). In this study, material of quadcopter frame was composites material that made of waste material from styrofoam, bagasse and eggshell. Styrofoam was used as binder of composite material. Bagasse and eggshell was used as reinforcement in green composite material. The investigation focused on effect of volume fraction on flying time of quadcopter that made of green composites material. This study showed that addition of eggshell powder in composites up 25% by volume fraction, result in decreasing the flying time of quadcopter. Addition of eggshell powder in composites up 25% by volume fraction,  result in decreasing the porous of green composite. Porous structure affect the flying time of quadcopter based on green composite materials that made of waste material from styrofoam, bagasse and eggshell. Green composite based on styrofoam, bagasse and eggshell can be applied in Unmanned Aerial Vehicle (UAV) materials.
Effect of Point Angle on Delamination in Drilling of KFRP Composite Mohammad Muslimin Ilham; Am Mufarrih
Jurnal Teknik Mesin (JTM) Vol 8, No 2 (2018)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

Drilling is the most important machining process in the automotive and manufacturing industries. The performance of drilling KFRP composite materials can be measured by quality characteristics such as surface roughness, burr height, roundness, power consumption, thrust force and delamination. This study aims to determine the effect of process variable variation to delamination response. The experimental is held with three replication. The variations of drilling process variable is point angle (90°, 100°, 110°, 118°, 130° and 140°). The response variables observed is delamination. The cutting tool used is the twist drill HSS Nachi. One Way ANOVA is used to determine the process variables that have a significant influence on the observed response variables. The results showed that the point angle had a significant effect on response of delamination. Increasing the point angle will increase the delamination.
Static Analysis of Structural Structure of Vertical Wind Tunnel (VWT) Design By Catia V5R21 Muhamad Jalu
Jurnal Teknik Mesin (JTM) Vol 8, No 2 (2018)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

Vertical Wind Tunnel (VWT) is a wind tunnel application that is directed vertically upwards, so that the air impulse is applied as an alternative to people (athletes) feeling the sensation of flying, like parachuting when jumping at altitude out of an airplane. VWT will certainly reduce the potential for accidents, improve the efficiency of skydiving, and improve the quality of skydiving athletes. To ensure the design of the VWT structure is safe, it is necessary to test the strength of the structure with load = 55212.16 Newton and load thrust = 46826.3516 Newton. VWT structure uses 2 types of steel material, namely the type of Steel A36 and Steel A441 because this type has the appropriate material property other than that it is very easy to get on the market. then simulated using CATIA V5R21 software. So that the obtained value of Steel A36 Margin of Safety (MS) is 2.79 (load) and 3.48 (load thrust). For Steel A441, the MS value is 4.52 (load) and 5.51 (load thrust), from all the two materials producing an MS value 1, indicating that the design of the VWT structure is said to be safe.
Effect of Special Tool Completeness during Regular Service at Two Official Honda Workshops (HCM & CPM) In Padang on Customer Satisfaction Wahyu, Dian
Jurnal Teknik Mesin (JTM) Vol 8, No 2 (2018)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

AHASS HCM and CPM workshops are Honda's official workshops separated by a distance of only 1.6 km located in the city of Padang. The number of customers in these two workshops is very much different, even though the HCM workshop has a better form of building and facilities compared to the CPM workshop. Research needs to be done to see the factors that influence customer interest in choosing a workshop. Performing regular service requires equipment. Tools that are often overlooked are special tools. If the workshop does not have special tools, the mechanics will have difficulty in the process of dismantling and installing or adjusting, so that the impact on the performance of the motorcycle that has been serviced. Research on the effect of the completeness of special tools during regular service at two official Honda workshops (HCM & CPM) in Padang on customer satisfaction has been successfully carried out and the results show a significant difference. The measurement of the influence of special tools on customer satisfaction is measured using the SERVQUAL method, so that service quality in both workshops can be seen. The SERVQUAL method uses several dimensions (tangible, reliability, responsiveness, assurance, empathy) which will then be translated into 16 variables as indicators to create programs that can control services oriented to customer satisfaction. The results showed that both workshops (HCM and CPM) had a gap between perception and expectations in each dimension. The average total gap for each dimension is -0.44486 for the HCM workshop and -0.2902 for the CPM workshop. This shows that the quality of service expected by customers has not yet been achieved in both workshops, but the quality of service from CPM workshops is much better compared to HCM workshops. This causes more CPM workshop customers compared to HCM repair shops.

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