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All Journal International Journal of Advances in Applied Sciences Rekayasa Mesin Journal of Mechanical Engineering Science and Technology Jurnal Teknik Mesin dan Pembelajaran

Murdanto, Putut

Universitas Negeri Malang

Author-ID : 3224947

Earth & Planetary Sciences Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Other

Published : 9 Documents Claim Missing Document

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Analysis of Hardness, Microstructure, Macrostructure, and Fluidity of Al-Si with Eggshell Variation as Binder in Sand Casting Fitriyanto, Retnaldi; Puspitasari, Poppy; Murdanto, Putut
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 2, No 2 (2018)
Publisher : Universitas Negeri Malang

Metal casting process can be described as the process of making object by melting metal then poured into the desired mould. The mould that is commonly used is sand moulding. Binder which commonly used in sand casting process is bentonite. Bentonite is kind of mineral which can be run out if it is used continuously. The background of this study was to analyse the other binder that could reduce the use of bentonite by utilizing eggshell. This study aimed to analyse the hardness, microstructure, macrostructure, and fluidity of the cast which yielded by using variations of eggshell. The method that used was experimental method with a model of one-shot case study with descriptive analysis. The study result showed that the highest value of fluidity test was found at variation of 7% eggshell and 3% bentonite with hardness value of 180.86 HV. There were found several defects, casting result with variation of 4% eggshell and 3% bentonite found that there were ± 28 pinhole defects and ± 20 open grain defects. There were found ± 65 pinhole defects and ± 30 open grain structure defects in the casting result with variation 7% eggshell and 3% bentonite. The casting result with variation 10% eggshell and 3% bentonite had ± 50 pinhole defects and ± 30 open grain structure defects.

Casting Defects And Mechanical Properties of Al-Si Alloy with Bangkalan Local Clay as Sand Casting Binder Syaifullah, Candi Galih; Saputra, Ayik; Ruhyatul, Shabrina; Murdanto, Putut
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 2, No 1 (2018)
Publisher : Universitas Negeri Malang

This research is aimed to know the defect of casting, tensile strength, and hardness of Al-Si alloy to the variation of binder. The research method used is descriptive quantitative research method. This because the data is expressed in the form of numbers. This research uses pre-experimental research design using one-shot case study model. Based on the results of the study, it was found that most pinhole defects were owned by specimens using 90% bentonite binder that is 59 defects. Whereas the pinhole defect which is at least owned by the specimens using bangkalan local clay binder 9% that is 31 defects. The most common open grain structure defect is owned by metal casting specimens using a 9% bentonite binder, which is 81 defects. Whereas the defect of open grain structure is at least owned by the specimen result of casting of metal clad with bangkalan local clay 3% which amounted to 40 defects. The result of the research using bangkalan local clay binder of 9% has higher tensile strength than other binder. This is because the characteristic of bangkalan local clay which has a high content of calcium (Ca) is 92,81%. The value of the tensile strength of the bangkalan local clay is 12,8712 (kg/mm2), whereas the bentonite which is said to be the ideal binder for the mold has a tensile strength of 10,1612 (kg/mm2). The highest hardness value is owned by Al-Si alloy casting specimen with bend mixture variation of bangkalan local clay 9% that is 128,033 HV. While the lowest hardness value is owned by Al-Si alloy casting foundry with 9% bentonite binder 114,4 HV

Analysis of Hardness, Quality and Fluidity Al-Si Casting Result by Using Clamshell (Placuna placenta) as The Mixture of Sand Moulding SMSN Shikh Zahari; Saif Aziz Saputra; Putut Murdanto
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 2, No 2 (2018)
Publisher : Universitas Negeri Malang

Metal is an element that cannot be separated from human life. Almost all of human activities includes metal element in it. Metals can be formed through several ways, one of which is metal casting. Metal casting is one of technique in producing products where the metal was melted in crucible and then poured in a moulding which is similar to the original shape of the product. Moulding that are commonly used are sand moulding. Commonly, binder which used in sand casting process is bentonite. Bentonite, was kind of mineral which can be run out during its usage. This study aimed to analyse the alternative binder to reduce the usage of bentonite. This study analysed the using of clamshell as the mixture of moulding sand against the hardness, quality and fluidity of Al-Si casting result. The highest hardness value was found at the specimen with the mixture of 11% clamshells with an average hardness value of 122.96 HV. The highest value of fluidity also presented in the specimen which used mixture of 11% clamshells that resulted the length of specimen at 789 mm. Based on the analysis of casting defect showed that specimen which used 5% clamshells had the fewest and the smallest defect compared the other specimens.

The Analysis of Permeability and Mechanical Properties of Sand Moulding Using Mixed Material Clamshell (Placuna placenta) on Sand Casting Kritchakhris Nawettanaprasert; Zakaria Bagus Aminanta; Putut Murdanto
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 2, No 2 (2018)
Publisher : Universitas Negeri Malang

This study objected to determine mechanical properties of sand moulding by conducting tensile test, compressive and shear test, and also permeability test. This study also had the other objective that was analyse clamshell (Placuna placenta) as mixture material for bentonite as binder in manufacturing sand moulding in order to reduce the usage of bentonite. The method that used in this study was pre-experimental method with One-Shot Case Study model. The best mechanical properties obtained on sample 3 clamshell 11%, permeability results obtained was 190 ml/min, tensile strength results obtained for the dry sand was 0.015 kg/cm2, compressive strength obtained for the dry sand was 2.91 kg/cm2, and the shear strength of sand moulding in dry condition was 0.92 kg/cm2.

Analysis of the Effect of Guide Vane Opening Variations and Total Blades on Cross Flow Turbine Performance Using Computational Fluid Dynamic Navis, Akbar; Suryanto, Heru; Murdanto, Putut
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 4, No 2 (2020)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v4i22020p072

Indonesia is an agrarian country that continuously produces water, so it has the potential to develop a hydroelectric power plant. Computational Fluid Dynamic (CFD) application could be used to be an economical, quick, and efficient approach to improve the engineering design and turbine performance. This research aimed to find the effect of guide vane opening variations and total blades on cross-flow turbine performance using CFD simulation. This research used experimental modelling method with ANSYS program for turbine design with 22, 24, and 26 turbine blades and guide vane opening variations of 12°, 16°, 20°, 24°, and 36°. The data were collected by reviewing the simulation results after the numerical calculation process. The results showed that the cross-flow turbine performance was improving along with the increasing guide vane opening. The optimum turbine performance (power and efficiency) was obtained at 24° opening of guide vane and 26 total blades, producing 868.53 W power with 75.16% efficiency.

Co-Authors Ananda Rizki Acmad Diasa Putra Fitriyanto, Retnaldi Heru Suryanto krisdianto hadi Kritchakhris Nawettanaprasert Nanang Qosim Navis, Akbar Purnomo Purnomo Rr. Poppy Puspitasari Ruhyatul, Shabrina Saif Aziz Saputra Saputra, Ayik SMSN Shikh Zahari Syaifullah, Candi Galih Wahono . Zakaria Bagus Aminanta

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