Article Per Year (5 Year)
p-Index From 2020 - 2025
0.751
P-Index
This Author published in this journals
All Journal Jurnal Ilmiah Arena Tekstil International Journal of Marine Engineering Innovation and Research
Parlindungan Manik
Universitas Diponegoro
Automotive Engineering Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
ANALISIS KEKUATAN LENTUR DAN KEKUATAN TEKAN BALOK LAMINASI BAMBU PETUNG (Dendrocalamus asper) DAN SERAT KELAPA SEBAGAI KOMPONEN KONSTRUKSI KAPAL Parlindungan Manik; S Samuel; Muhammad Ariq Fikri Kamil; Tuswan Tuswan
Arena Tekstil Vol 37, No 1 (2022)
Publisher : Balai Besar Tekstil

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31266/at.v37i1.7701

Abstract

Balok laminasi terbentuk dari dua material atau lebih yang mempunyai sifat berbeda. Laminasi bambu merupakan salah satu solusi untuk mengembangkan suatu material agar memiliki struktur yang lebih baik. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh arah laminasi bambu terhadap kekuatan lentur dan kekuatan tekan pada balok laminasi bambu. Metode yang dilakukan merupakan pengujian eksperimental dengan menguji kekuatan lentur dan tekan. Pengujian balok mengacu pada SNI 03-3958-1995 dan SNI 03- 3959-1995. Balok laminasi yang akan diuji memiliki nilai kadar air dibawah 13% sesuai dengan ketentuan pengujian dan memiliki berat jenis antara 0,58-0,69 g/cm3. Balok laminasi dengan variasi arah 0˚/90˚ mempunyai kekuatan lentur sebesar 74,44 MPa dan mempunyai kekuatan tekan 55,36 MPa. Laminasi dengan variasi arah bersilangan +45˚/-45˚ memiliki nilai kekuatan lentur sebesar 55,34 MPa dan kekuatan tekan 65,57 MPa. Variasi susunan arah bersilangan 0˚/90˚ memiliki kekuatan lentur yang lebih baik dibandingkan dengan variasi arah bambu bersilangan +45˚/-45˚, sedangkan untuk pengujian tekan, variasi susunan arah bersilangan +45˚/-45˚ memiliki hasil pengujian yang lebih besar. Hasil pengujian tekan dan lentur untuk kedua variasi tergolong dalam kelas kuat Badan Klasifikasi Indonesia (BKI) yang berbeda, variasi arah bambu bersilangan 0˚/90˚ tergolong dalam kelas kuat II untuk pengujian lentur dan kelas kuat II untuk pengujian tekan, sedangkan untuk variasi arah bambu bersilangan +45°/-45° tergolong dalam kelas kuat III untuk pengujian lentur dan kelas kuat I untuk pengujian tekan. 
The Influence of SMAW Welding Current Variation on Tensile Strength, Corrosion Rate, and Microstructure of ST 42 Steel for Inner Bottom Plate Material in Ships Parlindungan Manik; Deddy Chrismianto; Putranda Firman Prayoga
International Journal of Marine Engineering Innovation and Research Vol 8, No 2 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i2.16900

Abstract

Steel is currently widely used in the industrial world. Due to its versatile uses, the development of steel science has also broadened, leading to improved steel processing methods. Welding is a process of joining two pieces of metal using heat. Steel, containing carbon, is prone to oxidation and rust. The aim of this study is to determine the influence of welding current variations on tensile strength, corrosion rate, and the micrographic structure of ST 42 steel. The research method employed is experimental. The welding current variations used are 70 A, 85 A, 100 A, 115 A, and 130 A. In this study, the highest average tensile stress was found at 130 A, measuring 519.20 MPa. For tensile strain, the highest values of 7% were observed at 115 A and 130 A. The highest modulus of elasticity was obtained at 115 A, with a value of 102.18 GPa. The highest corrosion rate occurred in specimens with 70 A, with a value of 0.19 mm/year (good), and the lowest corrosion rate was at 130 A, with a value of 0.10 mm/year (excellent). The micrographic structure testing results showed a decrease in the ferrite phase with each increase in current, while the pearlite phase increased. It can be concluded that the best welding current for ST 42 steel is at 130 A, due to its high tensile strength and low corrosion rate.
Analysis Of the Effect Of Impermeability Test On Laminated Board Systems Bamboo Petung On Ship Shell Material Joints Parlindungan Manik; Sarjito Jokosisworo; Tuhfan Jawahiru Basyari
International Journal of Marine Engineering Innovation and Research Vol 8, No 3 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i3.17275

Abstract

Wood material is one of the materials in the manufacture of shipAnother alternative is bamboo. Bamboo material plays an important role because bamboo has another advantage of this bamboo, which is lightweight and has a fairly high flexibility. To make a good bamboo board, a strong adhesive and combination of components is needed for shipbuilding. In this study, the type of bamboo used was petung bamboo. The purpose of this study was to determine how the effect of the tightness test on the petung bamboo laminated board system at the ship’s shell material connection and to determine the value of the tightness used to test the petung bamboo laminated board system on the ship's material connection. Meanwhile, the benefit of the research is to provide understanding and insight on various matters relating to the Impermeability Test of the Petung Bamboo Laminated Board System at the Connection of the Vessel Material. The method in this study uses the standard Air Pressure Test which aims to see whether or not it can be applied to bamboo ship building technology. This test uses a pressure ranging from 0.2 psi. The results of this study showed that the vertical joint laminated board showed 140.2 lbf/in2 and 139.4 lbf/in2 while the inclined joint laminate board is 124.4 lbf/in2and 123.8 lbf/in2.
Study of Rescheduling of MV Alfa Trans Satu Ship Repair Using Critical Path Method (CPM) and Project Evaluation and Review Technique (PERT) Parlindungan Manik; Rika Afrodiyanti; Muhammad Luqman Hakim
International Journal of Marine Engineering Innovation and Research Vol 8, No 4 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i4.19043

Abstract

The ship repair project must work according to the schedule agreed in the work contract. However, in the process there are often delays between the initial plan and work in the field. The scheduling method is one of the influences on the success of repairs in order to produce efficient scheduling and cost planning. Based on these conditions, this study aims to obtain a new duration and the most optimal cost of crashing through an alternative, namely additional working hours (overtime hours) and additional workforce in the MV Alfa Trans Satu Ship repair project by applying the CPM and PERT methods. Based on the crash duration calculation using the CPM, the most effective and efficient alternative that can be used to accelerate the MV Alfa Trans Satu Ship repair project is by adding a workforce of 32 Person (an increase of 30% from the initial workforce). This acceleration alternative produces a duration below the normal duration, 21 days from the initial 25 days. The probability of success for this project using the PERT method can be completed within 21 days of 98.46%. The percentage increase in costs is only 4% of the normal for critical work, IDR 50,800,000.
Co-Authors Deddy Chrismianto Muhammad Ariq Fikri Kamil Muhammad Luqman Hakim Putranda Firman Prayoga Rika Afrodiyanti S Samuel Sarjito Jokosisworo Tuhfan Jawahiru Basyari Tuswan Tuswan