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All Journal Jurnal Tunas Accurate: Journal of Mechanical Engineering and Science Jurnal Penelitian Rumpun Ilmu Teknik Matemar Jurnal
Lilin Hermawati
Universitas Maritim Amni Semarang
Arts Computer Science & IT Education Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation Other

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Penerapan Vertikal Mixer Adonan 10 Kilogram Dalam Peningkatan Produksi Ukm Kerupuk Pangsit Lilin Hermawati; Sugeng Haryadi; Padang Yanuar; K Kundori; Iman Mujiarto
Jurnal TUNAS Vol 2, No 1 (2020): Edisi November
Publisher : LPPM STIKOM Tunas Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30645/jtunas.v2i1.23

Abstract

There are still many dumpling cracker makers who are generally done at home as a small home industry where they still use human labor to make the dough so that it takes a lot of energy and a long time, the use of human labor causes a lack of time efficiency and the possibility of decreased hygiene. Seeing these problems, the community service team of the D3 Engineering study program at the Maritime University of Amni Seamarang provided solutions to these problems by designing tools and providing training in the operation of the dough mixer to accelerate the production process and increase the hygienic value of production. The result of this service is a double stirring of the dumpling cracker dough which increases the speed of the kneading production process for 30 minutes / dough.
Analisa Pengukuran Cylinder Liner dan Piston pada Overhoul Diesel Engine Lilin Hermawati; Iman Mujiarto; Kundori; Sugeng Hariyadi
Accurate: Journal of Mechanical Engineering and Science Vol. 1 No. 2 (2020): October 2020
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v1i2.324

Abstract

In addition to knowing the various types of machining components that exist, operators are required to know the maintenance and be able to measure each component so that the diesel engine's performance does not experience problems that result in decreased engine performance. Meanwhile, the supporting components of the diesel engine are like cylinder liners, because the cylinder liner components determine the volume of the cylinder and the performance of the diesel engine. The shape of the cylinder liner is like a tube where the manufacturing process uses a horizontal centrifugal casting process. Horizontal Centrifugal casting process is a casting process for making cylinder liners by pouring molten metal into a rotating mold. Implementation of Top Overhaul on diesel engines is carried out by opening the cylinder head or the top of the engine. The parts examined include the rocker arm, inlet and exhaust valves, injectors, air starting valves and push rods. Top Overhaul is carried out when the working hours of the diesel engine have worked with around 6,000 hours of work. Major Overhaul maintenance, which includes inspection, maintenance and inspection carried out on all Top Overhaul works and on the piston, connecting rod, piston ring, seated metal and road metal. Major Overhaul maintenance is carried out when the diesel engine has 12,000 working hours according to the Diesel Engine Intruction Book. In the cylinder liner often occurs damage or looseness which is commonly referred to as abrasion, erosion and corrosion. Because of that the cylinder liner requires maintenance and measurement using an inside micrometer tool. From the results of the measurements and maintenance on the cylinder liner, the calculation of the consistency, taper and wear was obtained, to find out the specifications or exceed the limits specified in the Main Engine Intruction Book on the ship.
Manajemen Perawatan Oil Water Separator (OWS) Guna Mencegah Pencemaran Di Laut Pada KM. LAWIT Sugeng Haryadi Haryadi; Lilin Hermawati; Kundori .
JURNAL MATEMAR: MANAJEMEN DAN TEKNOLOGI MARITIM Vol. 2 No. 2 (2021): Jurnal Matemar (Juli)
Publisher : Akademi Maritim Nasional Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59225/matemar.v2i2.109

Abstract

Penelitian ini dilatar belakangi oleh pentingnya pencegahan terhadap pencemaran air laut yang berasal dari pembuangan limbah air dari kamar mesin kapal. Oil water separator merupakan salah satu peralatan yang dapat digunakan untuk mencegahan pencemaran yang berasal dari kamar mesin. Apabila minyak kotor yang bercampur dengan air laut dibuang melalui OWS, maka minyak kotor yang berasal dari limbah air got kamar mesinsetelah melewati OWS maka limbah air got yang dibuang ke laut sudah aman bagi lingkungan karena kandungan campuran minyak dan kadar minyak tidak melebihi dari 15 PPM. Tujuan dari penelitian ini adalah untuk mengetahui manajemen perawatan dan perbaikan OWS untuk mencegah terjadinya pencemaran di laut pada KM. Lawit. Metode penelitian yang digunakan adalah pendekatan kualitatif karena untuk menggambarkan bagaimana manajemen perawatan OWS untuk mencegah terjadinya pencemaran di laut pada KM. Lawit secara lebih rinci dan jelas sedangkan. Hasil dari penelitian ini adalah untuk melakukan perawatan pada OWS di KM. Lawit perlu dilakukannya manajemen perawatan yang meliputi perencanaan, pengorganisasian, pelaksanaan serta yang terakhir pengawasan pada saat mengoperasikan OWS.
Penambahan Berat Sic Pada Komposit Matrik Aluminium Dalam Sifat Fisis Dan Mekanis Diperkuat Tib Sebagai Penghalus Butir Lilin Hermawati; Sunu Arsy Pratomo; Sugeng Hariyadi
Jurnal Penelitian Rumpun Ilmu Teknik Vol. 2 No. 2 (2023): Mei : Jurnal Penelitian Rumpun Ilmu Teknik
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/juprit.v2i2.1968

Abstract

Aluminum is an excellent material for making composites because it is lightweight, ductile, does not corrode easily and is easier to shape and fabricate. Various properties of existing aluminum, aluminum has mechanical properties that are not good, namely very low hardness. In a good method for processing aluminum, namely stir casting, why is this method used because it is quite cheap and easy to process by means of an alloy that is heated with an adjusted heat and stirred to mix all the existing composite materials and given reinforcement or grain refiner to obtain a good and evenly distributed composite metric without reducing the function of the existing composite. The method used in this study serves to improve the mechanical properties of a metal and SiC is used as a reinforcement and TiB is used as a grain refiner. SiC has advantages over other ceramic materials, namely it bonds easily with aluminum and does not cause oxidation of aluminum metal. Increasing the wetability of metal alloys with reinforcement, the technique used is by stirring when the liquid metal is in a semisolid phase. This research focused on variations in weight percent SiC powder 0%, 5%, 7.5%, and 10% and the addition of 5% Tib. To determine the physical and mechanical properties of the Al-SiC-TiB composite, several tests were carried out, namely density, porosity, hardness, bending and microstructure tests. The results of the tests showed that the highest density value was found at 0% SiC by weight at 2.70 gr/cm3, the lowest at 10% SiC at 2.65 gr/cm3. Porosity calculations show that the highest porosity value is found in 10% SiC by weight of 3.16%. The highest hardness test result was 10% SiC by weight at 72.6 HRB and the bending test result with the highest hardness value at 10% SiC by weight was 371.5 MPa. The test results show that the mechanical properties increase with the increase in the percentage of SiC powder up to 10% and with the addition of TiB the finer grains are produced so that the porosity decreases.
Co-Authors Kundori Padang Yanuar Sugeng Haryadi Sunu Arsy Pratomo