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All Journal Jurnal Pendidikan Teknik Mesin Indonesian Journal of Electrical Engineering and Computer Science International Journal of Mechanical Engineering Technologies and Applications (MECHTA)
Kriswanto Kriswanto
Universitas Negeri Semarang
Automotive Engineering Education Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Effect of Firing Temperature on Density, Porosity, Impact Strength, and Macro Structure of Crucible Materials Made from Graphite, Kaolin, and Castable Cement Abdul Latif; Rusiyanto Rusiyanto; Sunyoto Sunyoto; Kriswanto Kriswanto; Deni Fajar Fitriyana
International Journal of Mechanical Engineering Technologies and Applications Vol 3, No 2 (2022)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2022.003.02.3

Abstract

Along with the advancement of modern times and technology, the metal sector plays a critical role in sustaining present growth. The industry's increased competitiveness has hampered the development of numerous small-scale metal casting industries. A crucible made of local graphite can only be used not more than ten melting cycles. This research aims to examine the influence of firing temperature on the density, porosity, impact strength, and macrostructure of graphite, kaolin and castable cement crucible materials. This research applies experiment method at various firing temperature, i.e. 850 °C, 900 °C, 950 °C, 1000 °C and 1050 °C. The crucible materials are made of graphite, kaolin, and castable cement. The firing process employs a heating rate of 5 °C/min and a holding time 2 hours. The results show that firing temperature influences the density, porosity, impact strength and macrostructure of crucible. The highest density at 1.86 grams/cm3 was obtained at the firing temperature of 1050 °C. The lowest porosity value of 41% was attained at firing temperature of 1050 °C. However, this value was still below the crucible index criterion. The highest impact strength of 0.003249 Joule/mm2 occurred for firing temperature of 1050 °C.
Development of a mobile expert system for the diagnosis on motorcycle damage using forward chaining algorithm Rizqi Fitri Naryanto; Mera Kartika Delimayanti; Kriswanto Kriswanto; Ari Dwi Nur Indriawan Musyono; Imam Sukoco; Mohamad Naufal Aditya
Indonesian Journal of Electrical Engineering and Computer Science Vol 27, No 3: September 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v27.i3.pp1601-1609

Abstract

Indonesia is an ASEAN country with the most motorcycle users, where one-third of its population own motorcycles. The automatic motorcycle is the most widely used type due to its agility and fuel-efficient abilities. Sudden motorcycle damage could hamper the users' activities. However, most of these users do not know the reason for the damage. This paper presents the development of expert system for diagnosing the damage of motorcycle using forward chaining method. This system was implemented in mobile application. Through a mobile application, a solution for these users can be obtained. This application immediately discovers the damaged location and repair process. Furthermore, it acts as the first solution before motorcycle repair is carried out in a shop. In this study, the forward chaining method was implemented. It is based on a pattern-matching algorithm whose primary objective is to match facts (input data) with appropriate rules from the rule base. Various test results showed that the diagnostic application used for automatic motorcycle damages 100% worked.
MACHINING TIME OPTIMIZATION OF SURFACE FINISHING CNC MILLING PROCESS ON STEEL WORKS 2311 Kriswanto Kriswanto
Jurnal Pendidikan Teknik Mesin Vol 23, No 1 (2023): Jurnal Pendidikan Teknik Mesin
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jptm.v23i1.47391

Abstract

The rapid development of manufacturing technology is a challenge for manufacturing industry players,especially in CNC milling machining to be able to produce quality products and have an optimalmachining time speed so that high product quantities are achieved with low production costs.Therefore, small industry players now have problems with their CNC milling machines. The existingengine is relatively smaller and there are some limitations that make it a problem such as limited enginerpm and soon. All the existing problems, further research needs to be done to optimize all the needs ofthe industrial world today, especially regarding the time of the production process that needs to beoptimized. This research was conducted by varying all related parameters, starting from spindle speed,feed rate and depth of cut. In the implementation process, this research uses the Taguchi OrthogonalArray method to minimize experimental tests so that it is more time and cost efficient. The resultsobtained in this study are feed rate is the most influential parameter on machining time, followed byspindle speed and the third significant parameter is depth of cut with the smallest contribution tomachining time. Then for the most optimal design, there is the 3rd parameter design which has the mostoptimal time, which is 55 seconds
Co-Authors Abdul Latif Ari Dwi Nur Indriawan Musyono Fitriyana, Deni Fajar Mera Kartika Delimayanti Mohamad Naufal Aditya Rizqi Fitri Naryanto Rusiyanto Rusiyanto, Rusiyanto Sukoco, Imam Sunyoto Sunyoto