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Studi Konsentrasi Larutan KOH dan Arah Orientasi Serat Rami terhadap Kekuatan Impak Komposit dengan Matrik Polyester Pramitasari, Retno Eka; Irfa'i, Mochamad Arif; Prasetyo, Reza
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 3, No 1 (2021): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v3i1.12456

Abstract

The development of increasingly advanced technology, especially in the health sector, can lead to an increase in the need for composite materials used. This study aims to describe the results of the concentration of KOH solution and the orientation of the ramie fiber on the impact strength of composites with a polyester matrix. This research is an experimental study with the manipulation variables are the concentration of the KOH solution and the orientation of the fiber direction by determining the value of the impact strength as the dependent variable of ramie fiber as a control variable of this study. This study obtained the optimum impact test result of 0.0711 J/mm2 with 5% KOH solution concentration and located at 0o/45o/90o fiber direction orientation. While the results of the lowest impact test resulted in a value of 0.0101 J/mm2 without soaking the KOH solution and located at 90o/0o/90o fiber direction orientation.
KETERKAITAN ANTARA BIM 4D DAN PENGENDALIAN WAKTU PELAKSANAAN PADA PEMBANGUNAN PERUMAHAN (Studi Kasus: Perumahan Alya Residence) Prasetyo, Reza; Andri, Andri; Salam, Muhammad; Priskhal, Priskhal; Nuhun, Ridwansyah; Soeparyanto, Try Sugiyarto; Welendo, La
STABILITA || Jurnal Ilmiah Teknik Sipil Vol 12, No 2 (2024):
Publisher : Fakultas Teknik Jurusan Sipil Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/jts.v12i2.48026

Abstract

The application of 4D Building Information Modeling (BIM) in the construction industry has introduced a new paradigm in project management, especially in the context of housing development. Project cost control is a critical factor that influences the success and profitability of construction projects. This research aims to analyze the relationship between 4D BIM and cost control in housing construction. This research methodology uses a qualitative approach with case studies. The Alya Residence housing development is a reference in the use of this technology. Data was collected through in-depth interviews with construction professionals involved in housing development projects. In addition, data is also collected from project documentation, including initial and final cost estimates, as well as cost evaluations throughout the project cycle. The research results show that 4D BIM integration has a positive impact on controlling housing development project costs. 4D visualization allows project teams to identify potential cost deviations early, enabling timely corrective action