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All Journal Jurnal Pendidikan Kewarganegaraan Undiksha REKA GEOMATIKA Jurnal Pengembangan Energi Nuklir Indonesian Journal of Geospatial Journal of Engineering and Technological Sciences Widyariset Jurnal Teknik Sipil JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) JURNAL ILMIAH GEOMATIKA MAJALAH ILMIAH GLOBE Widyariset
Irwan Gumilar, Irwan
Program Studi Teknik Geodesi Dan Geomatika Fakultas Ilmu Dan Teknologi Kebumian, ITB
Aerospace Engineering Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Neuroscience Physics Social Sciences

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TECTONIC STRAIN AND SEISMIC HAZARD ESTIMATION IN SUNDA STRAIT BASED ON GPS OBSERVATION DATA Marta Nugraha Hidayat; Irwan Meilano; Irwan Gumilar
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1074.834 KB) | DOI: 10.14203/widyariset.15.3.2012.619–628

Abstract

Sunda strait has a relatively high seismic activity. The high seismic activity was caused by the seismic zoneat that region, including the faults zone. Based on the high seismic activity in the Sunda Strait, it is necessary to doresearch about the strain that occurred in the Sunda Strait region to determine the tectonic activity in that area andits seismic hazard. To observe the tectonic activity in the Sunda Strait, GPS observations were made periodicallywith static differential method at the observation points located in the Sunda Strait region. Based on the strainanalysis, the southwestern part of the Sunda Strait tend to experience compression and the northeastern part tendto experience extention. Sunda Strait had a relatively high seismic hazard with maximum PGA 0,47 g.
Survey Pemetaan Model Bangunan Tiga Dimensi (3D) Metode Terrestrial Laser Scanning untuk Dokumentasi As-Built Drawing S. Hendriatiningsih; Irwan Gumilar; Dwi Wisayantono; Elok Lestari Paramita
Jurnal Teknik Sipil Vol 21 No 2 (2014)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2014.21.2.7

Abstract

Abstrak. Untuk mendapatkan informasi bangunan, dapat dilakukan as-built survey. Saat ini, teknologi pemindaian laser digunakan untuk teknik survey pemetaan tiga-dimensi (3D) yang disebut sebagai survey pengukuran dengan metode Terrestrial Laser Scanner (TLS). Salah satu aplikasi TLS adalah membuat visualisasi model 3D untuk dokumentasi as-built drawing. Pengukuran dengan metode TLS adalah melakukan pemindaian obyek dan merekam point-clouds 3D dalam jumlah yang besar untuk membentuk model 3D. Pemindaian dari titik-titik yang direncanakan agar memperoleh obyek yang bertampalan. Pada proses pengolahan data point-clouds, dilakukan registrasi dengan metode natural-point-feature, filtering, georeferencing dan wrapping untuk mendapatkan model 3D dengan menggunakan perangkat lunak Geomagic. Analisis registration adalah membandingkan error registrasi dengan ketelitian penentuan posisi (6mm) berdasarkan spesifikasi alat TLS. Di beberapa stand-point diperoleh error registrasi hingga mencapai 14,827 m. Untuk memperoleh error registrasi yang lebih kecil dari 6 mm, dilakukan registrasi secara bertahap. Dimensi bangunan berupa jarak pada model 3D dibandingkan dengan jarak yang diukur dengan alat ukur Electronic Total Station (ETS). Hasil ukuran jarak pada model 3D sama dengan hasil ukuran jarak ETS. As-built survey dapat dilakukan dengan teknik survey pengukuran 3D metode TLS.Abstract. To get the information of the building, it can be done as-built survey. Currently, laser scanner technology used for three-dimensional (3D) mapping survey is known as measurement survey technique by Terrestrial Laser Scanner (TLS) method. One application of TLS is to create 3D model for as-built drawings documentation. TLS instrument scans the object and records 3D point-clouds in large numbers to create 3D model. Scanning from the stand-points are planned in order to obtain the overlapped objects. In the point-clouds data processing, its activities are naturalpoint-feature registration, filtering, geo-referencing and wrapping to create 3D modeling using Geo-magic software. Registration analysis is to compare the registration error with a positioning accuracy (6mm) by means of the TLS instrument specification. Several stand-points are obtained registration error of up to 14.827 m. Furthermore, carried step by step registration in order to obtain registration error smaller than 6 mm. The dimensions of the building in the form of distance on the 3D model compared to the distance measured by Electronic Total Station (ETS) instrument. The results, measured distance on the 3D model is equal to measured distance by ETS instrument. As-built surveys can be done with 3D mapping survey technique by TLS method.
TECTONIC STRAIN AND SEISMIC HAZARD ESTIMATION IN SUNDA STRAIT BASED ON GPS OBSERVATION DATA Marta Nugraha Hidayat; Irwan Meilano; Irwan Gumilar
Widyariset Vol 15, No 3 (2012): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1074.834 KB) | DOI: 10.14203/widyariset.15.3.2012.619–628

Abstract

Sunda strait has a relatively high seismic activity. The high seismic activity was caused by the seismic zoneat that region, including the faults zone. Based on the high seismic activity in the Sunda Strait, it is necessary to doresearch about the strain that occurred in the Sunda Strait region to determine the tectonic activity in that area andits seismic hazard. To observe the tectonic activity in the Sunda Strait, GPS observations were made periodicallywith static differential method at the observation points located in the Sunda Strait region. Based on the strainanalysis, the southwestern part of the Sunda Strait tend to experience compression and the northeastern part tendto experience extention. Sunda Strait had a relatively high seismic hazard with maximum PGA 0,47 g.
The Combined Use of Terrestrial Laser Scanner and Handheld 3D Scanner for 3D Modeling of Piping Instrumentation at Oil and Gas Company Irwan Gumilar; Farhan Farohi; Made Munarda; Brian Bramanto; Gusti Ayu Jessy Kartini
Journal of Engineering and Technological Sciences Vol. 54 No. 6 (2022)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2022.54.6.3

Abstract

Three-dimensional (3D) models are indispensable in managing, operating, maintaining, and repairing piping instrumentation activities in oil and gas companies. 3D models are expected to provide more interactive and representative information according to actual objects. Several technologies that can be used to generate piping instrumentation 3D maps are Terrestrial Laser Scanner (TLS) and Handheld 3D Scanner (HS). This study aims to create a 3D model of piping instrumentation using a combination of TLS and HS and analyze the results of data validation used for modeling. The results showed that a 3D modeling of piping instrumentation could be generated accurately using a combination of TLS and HS technologies. Merging between the two data is carried out through a cloud-to-cloud registration process based on the geometry of the object by considering the selection of reference data, the similarity of the scale factor, the unit of measure, and the overlap of the two data. The registration error generated in combining these two methods is less than 0.003 m. The resulting model still has drawbacks, which is the absence of coding for the pipe caused by the unavailability of the Piping and Instrumentation Diagram (P&ID) during modeling. The geometric validation of the model size value using reference data and the field size has the largest absolute difference of 0.0034 m with an average absolute deviation of 0.0016 m.
Co-Authors Abidin, H.Z. Abidin, Hasanuddin Z. Abidin, Hasanuddin Z. Abidin, Hasanuddin Zainal Andreas, H ARI NUGROHO Becky Hakim Bramanto, Brian Brian Bramanto Brian Bramanto Budi Brahmantyo D.M. Hakim D.M. Hakim, D.M. Dina A. Sarsito Dina A. Sarsito, Dina Dina Anggraeni Dina Anggraeni Sarsito Dina Anggraeni Sarsito, Dina Dwi Wisayantono Dwi Wisayantono Dwi Wisayantono, Dwi Elok Lestari Paramita Elok Lestari Paramita, Elok Lestari Farhan Farohi Gamal, M Gamal, Mohamad Gusti Ayu Jessy Kartini Gusti Ayu Jessy Kartini H. Andreas H. Andreas H. Andreas H. Andreas Hakim, Becky Hasanuddin C. Abidin Hasanuddin Z. Abidin Hasanuddin Z. Abidin Hasanuddin Z. Abidin Hasanuddin Z. Abidin Hasanuddin Z. Abidin Hasanuddin Z. Abidin Hasanuddin Z. Abidin Hasanuddin Z. Abidin, Hasanuddin Heri Andreas Heri Andreas I Gst Ngr Yoga Jayantara I.A. Sadisun I.A. Sadisun, I.A. Ilham Jamel Ilham Jamel, Ilham irwan meilano L.M. Hutasoit L.M. Hutasoit, L.M. Leonardo Siburian Ludya, Silmi Fawzya M. Gamal M. Gamal M. Gamal M. Irsyam M. Irsyam, M. Made Munarda Marta Nugraha Hidayat Mudzakir, Muhammad Zaky Muhammad Zaky Mudzakir Nia Haerani Nia Haerani Noviansyah, Rezky Hartawan R. Maiyudi R. Maiyudi, R. Rezky Hartawan Noviansyah S. Hendriatiningsih S. Hendriatiningsih Siburian, Leonardo Sidiq, T.P Silmi Fawzya Ludya T, Achmad R Teguh P. Sidiq Teguh P. Sidiq Teguh P. Sidiq Teguh P. Sidiq, Teguh Teriyuki Kato Trihantoro, Nur Fajar Vera Sadarviana, Vera W, Nunghatta S Y. Fukuda Y. Fukuda, Y. Yudovan Vidyan