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Murdiyanto, Danang
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CALCULATION OF POWER REQUIREMENTS TO DRIVE THE BELT WINDER PROTOTYPE PRINTED BY A 3D PRINTER Danang Murdiyanto; Bernardus Crisanto Putra Mbulu; Iga Yuswantoro
Mechanical, Energy and Material (METAL) Vol. 1 No. 2 (2023): Desember: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v1i2.88

Abstract

The industrial world in the field of medium and large scale construction and maintenance from both various industrial sectors needs to improve procedures with technology that is efficient, safe, can reduce costs, and can minimize process time. Based on the experience of researchers in the agricultural machinery industry when installing and replacing belts on conveyors is done manually, namely by moving the belt using a forklift and according to researchers it is less efficient. The design of this prototype belt winder is to present the actual performance mechanism of the belt winder machine. The method used is to calculate the prototype design, design using 3d software, then the model is printed using a 3d printer. The last process carried out by researchers is assembling each component, then conducting trials and observing the performance mechanism of the prototype belt winder. The results obtained are able to roll a 1030 mm long belt with the required motor power of 5.31 Watt.
IMPACT OF ANODE-CATHODE DISTANCE VARIATIONS ON NICKEL ELECTROPLATING OF AISI 1020 STEEL: HARDNESS AND CORROSION RATE ANALYSIS Nereus Tugur Redationo; Mannuel, Carlos Yoga; Murdiyanto, Danang
Mechanical, Energy and Material (METAL) Vol. 2 No. 1 (2024): Juni: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v2i1.90

Abstract

Nickel electroplating on AISI 1020 steel is expected to increase hardness and enhance aesthetic appearance. Nickel plating on AISI 1020 steel is also anticipated to protect the steel surface and reduce the rate of corrosion. In the nickel electroplating process, researchers studied variations in the anode-cathode distance (5 cm, 10 cm, and 15 cm) and the use of an aerator. Data from Vickers hardness tests, corrosion rate tests, and microstructure photos were used as the basis for analyzing corrosion rates. The corrosion rate value without the aerator at an anode-cathode distance of 15 cm is 0.034 mm/year, at 10 cm is 0.019 mm/year, and at 5 cm is 0.015 mm/year. With the use of an aerator, the corrosion rate at an anode-cathode distance of 5 cm is 0.022 mm/year, at 10 cm is 0.011 mm/year, and at 15 cm is 0.008 mm/year. The Vickers hardness values without the aerator for these distances were 337.3 VHN, 190 VHN, and 286 VHN, respectively, while with the aerator, the hardness values were 301.67 VHN, 200.33 VHN, and 339 VHN.
THE EFFECT OF COATING TEMPERATURE AND PARTICLE SIZE ON THE BURNING TIME OF KEMPI SHELL BRIQUETTES Vianus Ndopo Role, Narsisius; Murdiyanto, Danang; Crisanto Putra Mbulu, Bernardus
Mechanical, Energy and Material (METAL) Vol. 2 No. 1 (2024): Juni: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v2i1.96

Abstract

The current fuel is still sourced from fossil fuels, namely oil, coal and The current fuel is still sourced from fossil fuels, namely oil, coal and gas, which have many impacts on the environment. As an agricultural country located in the tropics, Indonesia is rich in biomass energy sources. In this research, the use of candlenut shells will be used or processed into alternative fuel, namely briquettes, with the aim of determining the value of combustion time and temperature produced through variations in composition and mesh size. The results of the research show that the effect of the burning temperature has an impact on the burning time of the briquettes and the resulting temperature, where the best burning time and temperature values ​​of the briquettes are produced by a burning temperature of 400°C with a grain size of 100 mesh, namely 177 minutes with an average burning temperature briquettes 193.9°C.
EFFECT OF TEMPERATURE VARIATIONS IN MANUAL TUBING MACHINES FOR PET PLASTIC MATERIAL ON TENSILE STRENGTH Wijaya, Kelvin; Murdiyanto, Danang; Cristanto Putra Mbulu, Bernadus
Mechanical, Energy and Material (METAL) Vol. 2 No. 2 (2024): Desember: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v2i2.98

Abstract

Briquettes are a type of alternative energy whose raw material source Plastic waste is an environmental problem faced by the people of Indonesia and the world. On the other hand, the production of waste generated in various institutions and sectors in Indonesia continues to increase every year, including the industrial sector whose production process is large-scale. Its use as a basic material for packaging bottles reaches 30% of world use. PET is also used as a synthetic fiber or polyester which accounts for 60% of world use. Study the author will do that is to make a tubing made from PET plastic waste that can be used as raw material for tubing. Using temperature variations (190℃, 200℃, 210℃), then 9 samples from each variation will be micro-photographed the effect of temperature on tubing results and tested for maximum tensile. After that, calculations are carried out to obtain the maximum tensile stress and strain values. Then the average maximum load value that can be received by PET tubing is highest at 190ºC temperature tubing has the ability to withstand tensile strength better than all temperature variations so that the average value is 35.94 N/mm2 and 200ºC is able to withstand 35.49 N/mm2 and 210ºC with 18.30 N/mm2. It can be interpreted that the higher the temperature, the effect on holding the tensile strength of the PET tubing and making the plastic structure change so that 210oC is close to the recycling value, while for temperatures below it is still non-recycled.
STUDY OF VARIATIONS IN GROOVED PRESS ROLLER LOADING ON THE TENSILE STRENGTH OF UMBRELLA GRASS FIBERS Anom Palmatira, Dismas; Murdiyanto, Danang; Cristanto Putra Mbulu, Bernadus
Mechanical, Energy and Material (METAL) Vol. 2 No. 2 (2024): Desember: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v2i2.99

Abstract

Composite materials have better material properties than ordinary materials. Based on current developments, the author participates in the development of composite materials by making a fiber from umbrella grass which is used to make composite materials. The author uses a grooved roller press to make umbrella grass fibers, using various loadings of 35kg, 40kg and 45kg, umbrella grass that has been rolled then looks at the structure of the fiber whether there is damage or fracture then every loading 3 fiber samples are taken and tested to obtain the strength value maximum pull. After the test data is obtained, calculations are carried out to obtain the maximum tensile strength value of each sample. The results obtained from each fiber with the highest tensile strength are loading of 35 kg with a tensile strength of 61.13478261MPa with a well-formed fiber structure, defects or fractures occur, then loading of 40 kg with a tensile strength of 55.90645161MPa with a well-formed fiber structure without Defects occurred and the final loading was 45 kg with a tensile strength of 28.02857143 MPa with the fiber structure formed where there were broken or defective parts of the fiber. Based on the research that has been done, umbrella grass fiber which has the highest tensile strength value and also has good fiber without damage is fiber at a loading of 35 kg.
PROTOTYPE DESIGN OF PLATE ROLLER MACHINE Danang Murdiyanto; Bernardus Crisanto Putra Mbulu; Bernadus Daniel Wahyu Prasetya
Mechanical, Energy and Material (METAL) Vol. 1 No. 1 (2023): Juni: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v1i1.39

Abstract

Current development of manufacturing industry is expected to have a good and innovative system. Machine planning is a very important part in determining the manufacturing process. Machine prototypes are very important in model and product development, because they can help a designer to evaluate processes, machine performance, and product developments. In this study, a prototype design of a plate roll machine was made. One of the manufacturing processes that is widely used in companies and home industries is the rolling process. Plate roll machine prototype design to find suitable dimensions. The plate roll machine prototype will be made using a 3D printing machine with Polylatic Acid (PLA) material. The prototype plate rolling machine uses a synchronous electric motor type 60KTYZ which has a power of 14 watts and a rotation of 15 rpm. The prototype of this plate rolling machine was tested using aluminum plate as raw material with a length of 820 mm, a width of 10 mm and a thickness of 2 mm. The test results with a given compressive force of 75 N, namely a deflection of 9 mm with a rolling speed of 0.02 m/s. In the equilibrium test, it is produced by calculating structural statics that the action forces and reaction forces are proven to be balanced.
A Study On Failure Stress and Fatigue Crack Rate Implemented to a Double Edge Notched Gusset Plate Patty, Agnes Hanna; Yoedono, Benedictus Sonny; Murdiyanto, Danang; Herlambang , Andy Rahmadi
Jurnal Teknik Sipil Vol 30 No 2 (2023): Jurnal Teknik Sipil
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2023.30.2.18

Abstract

A gusset plate is a member of a bridge structure that is significantly subjected to cyclically varying loads. It may collapse after a certain number of cycles. However a single cycle may causes structural failure although the maximum stress (due to loading) is much less than the yield or the ultimate stress of the material. In a case of notched component under such conditions, high-intensity stress will occur at the zone of the notched component. Fracture mechanics is strongly recommended in a bridge design especially for joints. It will determine the moment at which fatigue cracks will occur and how far it has propagated. This study explores a fracture phenomenon of a steel gusset plate due to fatigue loading. Modeled as a double-edged notched plate, the failure stress is found to be less than the ultimate stress of the material. By assuming that crack closure exist, the results of this study provide a significant conclusion: under a constant failure stress the rate of fatigue growth increases as the crack propagates. Keywords: Fracture mechanics, fatigue loading, stress intensity, double-edge notched
Co-Authors Achmad Noerkhaerin Putra Adriana Anteng Anggorowati Agnes Hanna Patty, Armin Naibaho, Singgih Fitra Utama, Andrew Joewono, Andrew Anom Palmatira, Dismas Antonius Prisma Jalu Permana Benedictus Sonny Yoedono Benedictus Sonny Yoedono Bernadus Daniel Wahyu Prasetya Bernardus Crisanto P.B Bernardus Crisanto Putra Mbulu Crisanto Putra Mbulu, Bernardus Cristanto Putra Mbulu, Bernadus Dyna Rachmawati Herlambang , Andy Rahmadi Iga Yuswantoro Kelvin Wijaya, Kelvin Mannuel, Carlos Yoga Mbulu, Bernardus Crisanto Putra Mietra Anggara Patty, Agnes Hanna Pratikto Pratikto Purnomo Budi Santoso Redationo, Nereus Tugur Sonny Yoedono, Benedictus Vianus Ndopo Role, Narsisius Yosep Ardi Ang S