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ANALISA KEKUATAN SAMBUNGAN DINDING RUMAH GELADAK DENGAN SYSTEM BOLTING Bellarina, Elsy Putri; Azhar, Ali; Kristiyono, Tri Agung; Aditya, Bagus Kusuma
Prosiding Seminar Teknologi Kebumian dan Kelautan Vol 2, No 1 (2020)
Publisher : Prosiding Seminar Teknologi Kebumian dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (685.095 KB)

Penelitian ini bertujuan untuk menganalisa kekuatan sambungan dinding rumah geladak dengan menentukan jenis dan jumlah sambungan bolting (baut) yang terpasang pada konstruksi rumah geladak. Penggunaan diameter baut yang bervariasi yaitu baut berdiameter M12, M14 dan M16 dengan 2 titik baut serta baut berdiameter M12, M14 dan M16 dengan 1 titik baut yang akan dilakukan pengujian dengan software inventor 2015. Setelah itu akan dibandingkan dengan kekuatan sambungan las sebagai standar acuan kekuatan sambungan. Hasil yang diperoleh bahwa sambungan bolting dengan variasi diameter telah memenuhi syarat dalam aspek kekuatan seuai aturan BKI Vol 2, bab 18 tentang tegangan geser yang diijinkan sebesar 360 N/mm2 dan tegangan normal sebesar 171 N/mm2, sehingga sambungan bolting dinyatakan layak untuk diaplikasikan dalam konstruksi sambungan dinding rumah geladak

ANALISA KEKUATAN SAMBUNGAN DINDING RUMAH GELADAK DENGAN SYSTEM BOLTING Elsy Putri Bellarina; Ali Azhar; Tri Agung Kristiyono; Bagus Kusuma Aditya
Jurnal Sumberdaya Bumi Berkelanjutan (SEMITAN) Vol 2, No 1 (2020): Prosiding
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/p.semitan.2020.1026

Penelitian ini bertujuan untuk menganalisa kekuatan sambungan dinding rumah geladak dengan menentukan jenis dan jumlah sambungan bolting (baut) yang terpasang pada konstruksi rumah geladak. Penggunaan diameter baut yang bervariasi yaitu baut berdiameter M12, M14 dan M16 dengan 2 titik baut serta baut berdiameter M12, M14 dan M16 dengan 1 titik baut yang akan dilakukan pengujian dengan software inventor 2015. Setelah itu akan dibandingkan dengan kekuatan sambungan las sebagai standar acuan kekuatan sambungan. Hasil yang diperoleh bahwa sambungan bolting dengan variasi diameter telah memenuhi syarat dalam aspek kekuatan seuai aturan BKI Vol 2, bab 18 tentang tegangan geser yang diijinkan sebesar 360 N/mm2 dan tegangan normal sebesar 171 N/mm2, sehingga sambungan bolting dinyatakan layak untuk diaplikasikan dalam konstruksi sambungan dinding rumah geladak

STUDI ESTIMASI BIAYA PEMOTONGAN PELAT SECARA MANUAL BERDASARKAN WAKTU PROSES DAN KONSUMSI GAS POTONG PADA GALANGAN KAPAL Bagus Kusuma Aditya; Tri Agung Kristiyono
JURNAL JALASENA Vol 3 No 2 (2022): FEBRUARI 2022
Publisher : Fakultas Sains dan Teknologi Universitas Karimun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51742/jalasena.v3i2.533

One of the dominant activities in the production process in shipyards is plate cutting. So that in this process, the cost of the cutting process will also have a large enough share. In the shipyard, manual cutting is still often encountered because the position and location of the plate cutting varies, although technologically there are automatic cutting machines which tend to be tied to the cutting location. In the Oxy-Lpg plate cutting study that has been carried out, the regression results are obtained, with the time equation Y = 33.826X – 0.9026, the Lpg consumption equation Y= 0.057 + 0.017X and the Oxygen consumption equation Y= -0.415 + 0.127X. based on the existing equation, the cost analysis of the cutting process obtained the cost of cutting the 6 mm plate IDR. 13,400 rupiah, the 8 mm plate IDR. 20,000 rupiah, 10 mm plate IDR 26,700 rupiah, 12 mm plate IDR 33,325 rupiah and 14 mm plate IDR 40,000 rupiah with a cutting length 100 cm

Analisa Durasi Pemotongan Pelat Secara Manual Oxy-LPG Terhadap Fungsi Sudut Posisi Pemotongan Bagas Prabaswara Badrani; Tri Agung Kristiyono; Bagus Kusuma Aditya
SAINTEK : Jurnal Ilmiah Sains dan Teknologi Industri Vol. 6 No. 1 (2022): JISTIN Vol 6 No. 1
Publisher : Universitas Katolik Musi Charitas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32524/saintek.v6i1.526

Replating dilaksanakan saat pelat badan kapal mengalami penipisan akibat korosi air laut. Proses replating badan kapal pada berbagai posisi pemotongan pelat memiliki kesulitan yang berbeda-beda sehingga mengakibatkan berbedanya waktu pekerjaan yang diselesaikan. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh sudut posisi pemotongan terhadap durasi pemotongan pelat secara manual. Penelitian ini dilakukan dengan pengukuran waktu secara langsung proses pemotongan secara manual pada posisi pelat 0° downhand, 45° vertical. 90° vertical, 135° overhead, dan 180° overhead. Berdasarkan analisa hasil yang telah dilakukan, dapat diketahui bahwa semakin besar kenaikan sudut posisi pemotongan mengakibatkan peningkatan durasi pemotongan yang dibutuhkan dengan mengikuti persamaan Y = 1,0619 X + 235,33 dimana X merupakan fungsi sudut posisi pemotongan dan Y merupakan durasi pemotongan.

STUDI PENGARUH VARIASI JARAK NOZZLE TIP TERHADAP KEBUTUHAN GAS OXY-LPG DAN DURASI PADA PEKERJAAN PEMOTONGAN PELAT BADAN KAPAL SECARA MANUAL Syahrul Setyo Pambudi; Tri Agung Kristiyono; Bagus Kusuma Aditya
JURNAL JALASENA Vol 4 No 1 (2022): AGUSTUS 2022
Publisher : Fakultas Sains dan Teknologi Universitas Karimun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51742/jalasena.v4i1.605

The process of manually cutting plates with oxy-LPG gas is still widely used in shipyards and ship sub-contractors in Indonesia, both in the production of new building ships and repairs. In the cutting process, one of the factors that can affect the quality of cutting is the use of a tip nozzle distance. In the shipping industry, it is often found that the use of the tip nozzle distance in the process of manually cutting plates varies. The purpose of this study was to determine the effect of the nozzle tip distance on the need for oxy – LPG gas and the duration of cutting. This research method was carried out using the experimental method of cutting plates. Based on the results of data analysis, it is known that the higher the use of the nozzle tip distance, the need for oxy-LPG gas will increase while the cutting duration is not. The linear regression equation obtained between the distance of the tip nozzle and the oxygen requirement is Y = 0.0171X + 0.5357 and the tip nozzle distance with the LPG needs is Y = 0.0071X + 0.06, and the polynomial order 2 non-linear regression equation obtained between the tip nozzle distance and the cutting duration is Y = 0.9895X2 – 19.312X + 310.09 and the optimal distance of the tip nozzle is obtained at a distance of 9.758 mm with a cutting duration of 215.862 seconds.

Analisis Consumable Dan Biaya “Manual Cutting Oxy-Lpg” Pelat Kapal Dengan Variasi Posisi Pemotongan Bagus Aditya; Tri Agung Kristiyono; Intan Baroroh
Ge-STRAM: Jurnal Perencanaan dan Rekayasa Sipil Vol. 6 No. 1: March 2023
Publisher : Universitas Dr. Soetomo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25139/jprs.v6i1.5193

Manual Cutting is part of the process in ship building and ship repair. Oxy-LPG gas is widely used in the process of cutting plates with manually or automatically method. In the process cutting of plates in ship repair, the cutting position are Down Hand, Vertical and Overhead in cause the gas consumable and cutting duration proces are still not widely known numerically. In improving the data, a survey and initial study are needed as a support, so to obtain standard data for manual plate cutting numerically, plate cutting experiments are carried out in several variations in position and plate thickness variations. The results of the equation in manual plate cutting Downhand obtained Y=43,667x-43 (Duration), Y=0.0875x-0.2833 (O2) and Y=0.051x-0.0922 (Lpg). Vertical Y=34,667x-9,333 (Duration), Y=0,1042x-0.3778 (O2) and Y=0,0608x+0,1033 (Lpg) while Overhead Y=33.667x+28,111 (Duration), 0, 0792x+0.0922 (O2) and Y=0.1008x-0.2433 (Lpg). For the cost analysis, it was found that the cost increase was 8.49% based on the function of the increase in plate thickness. If it is based on the position function, the average cost increase is 10.55%.

Effect of Nozzle Tip’s Variation to The Duration and OXY-LPG Gas Consumptions Using Manual CuttingMethods in Shipyards Mardhotillah, Zahro Wanda; Kristiyono, Tri Agung; Aditya, Bagus Kusuma
BERKALA SAINSTEK Vol 10 No 4 (2022)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v10i4.32389

In maritime industry, especially shipbuilding in Indonesia, various of cutting processes are implemented, which one is Gas Manual Cutting. Generally, gas requirements and duration of plate cutting processes are calculated based on previous work experience. The use of different nozzle tips by the operator will affect to gas consumption and cutting duration in each process. The purpose of this study was to determine the effect of variations in the tip-nozzle size on the duration and OXY-LPG gas requirements in manual plate cutting. The research was conducted using an experimental-based research with linear regression analysis using the ANOVA method. Based on the results of data analysis, it can be known that the larger the diameter of the nozzle tip, the requirements for OXY-LPG gas will increase by following the equation ????=0,1117????+0,3533 for Oxygen and ????=0,025????+0,0489 for LPG. Meanwhile, the larger of nozzle tip diameter can cause a decrease in the cutting duration required by following the regression equation ????=−28,603????+293,01.

Experimental Study on The Effect of Epoxy Zinc and Thinner Ratio on Platform Structure Coating Quality Lasma, Novi Anggiat; Kristiyono, Tri Agung
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 6, Number 2, July 2025 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.vi.45451

Paint serves as a coating material that provides aesthetic value, adhesive strength, and protection to surfaces from environmental corrosion. The one of critical aspect is the paint and thinner ratio, which can influence adhesive strength and the performance of protection. This experimental study investigates the effect of varying ratios of epoxy zinc paint (Avantguard 750) and thinner (08450) on adhesion strength and drying rate. Paint was mixed with thinner at 10%, 20%, 30%, 40%, and 50% of the paint's volume. Steel plates were used as test specimens, coated via spray method. Adhesion quality was assessed using the “X–Cut Test” and “Cross Cut Tape Test” based on ASTM D3359 Methods A and B and the adhesion tests showed excellent results with a rating 5, indicating no peeling. Drying quality was evaluated using the “Solvent Rub” method according to ASTM D4752-20. Dry tests also have positive results with a rating 5 within 6 to 24 hours. The findings suggest that variations in thinner concentration do not significantly affect adhesion strength or drying time.

Alat Deteksi Persentase Penyusutan Kadar Air Pada Sample Rumput Laut Berbasis Air Fryer Yang Dimodifikasi Rifandi, Safriudin; Aditya, Bagus Kusuma; Nuhman, Nuhman; Taufiqurrohman, Muh.; Suryadhi, Suryadhi; Subur, Joko; Kristiyono, Tri Agung; Rosana, Nurul; Widyadharma, Indra
Telekontran : Jurnal Ilmiah Telekomunikasi, Kendali dan Elektronika Terapan Vol. 13 No. 1 (2025): TELEKONTRAN vol 13 no 1 April 2025
Publisher : Program Studi Teknik Elektro, Fakultas Teknik dan Ilmu Komputer, Universitas Komputer Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34010/telekontran.v13i1.15640

Abstract - Seaweed is one of the biological resources that is very abundant in Indonesian waters. Indonesia's seaweed export products are currently still dominated by seaweed products, reaching 80%. For export needs, the water content of seaweed must reach around 15%. To achieve export standard moisture content, wholesalers or industries usually carry out the seaweed drying process independently. Meanwhile, to avoid losses in exporting dried seaweed, they test seaweed samples to be purchased to determine the percentage of water content reduction in the seaweed. In the testing process, currently we are still using a small oven with a gas-burning stove and a separate digital scale. The use of this device is felt to be less effective and less flexible in its application. Therefore, we need a tool that is integrated into one and is small in size to detect the percentage of water content reduction in seaweed samples. In this research, experimental methods were used in testing equipment and collecting data. The results of the experiment showed that a good temperature to use in drying seaweed samples was 160 OC with the result that the seaweed was dry but not burnt. Meanwhile, the shrinkage percentage is around 34.72%.

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