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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur Jurnal Teknik Sipil Rekayasa Mesin Jurnal Rekayasa Mesin Journal of Architectural Research and Design Studies Astonjadro Jurnal Permukiman Jurnal Engine: Energi, Manufaktur, dan Material Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Jurnal Teknik Sipil Macca Journal of Engineering and Technological Sciences
Irawati, Inggar Septhia
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Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Pengaruh Variasi Penentuan Kerapatan Bambu Petung terhadap Nilai Modulus Elastisitas Dinamis Nurjanah, Nurjanah; Awaludin, Ali; Irawati, Inggar Septhia
Jurnal Teknik Sipil Vol 15, No 1 (2018)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (408.974 KB) | DOI: 10.24002/jts.v15i1.3151

Abstract

ABSTRAK: Pengujian untuk mengetahui kekuatan dari suatu material sangat penting dilakukan. Pengujian yang sering dilakukan yaitu dengan menggunakan metode statis dan dinamis untuk mencari nilai modulus elastisitas. Sedangkan untuk mengetahui nilai modulus elastisitas dinamis maka nilai kerapatan bambu harus diperhitungkan. Namun, struktur anatomi bambu yang sangat bervariasi dari bagian pangkal sampai ke bagian ujung bamboo mempersulit dalam perhitungan kerapatan bambu. Oleh karena itu, penelitian ini bertujuan untuk mengukur nilai kerapatan bamboo dengan menggunakan metode ISO dan metode Archimedes dan melihat pengaruhnya terhadap perhitungan nilai Modulus Elastisitas Dinamis bambu Petung.
PERANCANGAN SISTEM HIDROLIK PADA MESIN PRESS BAMBU LAMINASI Gumilang, Theo Satria; Krisnaputra, Radhian; Sugiyanto, Sugiyanto; Hendaryanto, Ignatius Aris; Irawati, Inggar Septhia; Bahari, Galuh
Jurnal Rekayasa Mesin Vol. 14 No. 3 (2023)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v14i3.1484

Abstract

The hydraulic system is a power transmission system by using the compressive energy of the fluid into mechanical energy to obtain a power greater than the initial power released. The press machine is one of the pieces of equipment that apply the hydraulic system. In the process of making laminated bamboo, the bamboo gluing technique is assisted using a press machine. Based on observations, the press machine used is a manual press machine, so the pressing process is not efficient. This study aims to increase the effectiveness of pressing laminated bamboo. The results of the study found that the press machine has 4 hydraulic cylinders so the pressing process can be carried out at several points simultaneously. The results of the hydraulic system analysis diagram show hydraulic cylinder moves in 16,9 seconds with a pressure of 100 bar, so the pressing process is fast. Mathematical calculations produce data, a hydraulic gear pump with a displacement of 13 cc/rev, electric motor power of 3,7 kW, hydraulic cylinder diameter of 63 mm, cylinder rod of 35 mm, rod of 400 mm, and a hydraulic tank capacity of 12 liters.
Infrastructure Management of the Smart and Green Learning Center Building Using the Analytical Hierarchy Process (AHP) Balqis, Ratu Irmi; Priyosulistyo, Henricus; Irawati, Inggar Septhia
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 1 (2024): May
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i1.67639

Abstract

Building infrastructure management is a key element in maintaining and improving the efficiency, sustainability, and quality of a building. The Smart and Green Learning Center (SGLC) building at Gadjah Mada University is a modern building that functions as both an administrative office and a lecture hall. The building boasts a modern design featuring extensive use of glass and stands 11 stories tall. It embodies the concept of a green and smart building. Hence, it requires serious attention in terms of effective maintenance and proper maintenance to ensure the building can function properly. This research uses the Analytical Hierarchy Process (AHP) method to obtain weighting values for room components/elements. This weighting value is then used to calculate the SGLC building component condition index, which can provide information of whether the component is damaged or not. The weighting values are obtained by distributing questionnaires, while the condition index is determined through observation. The components observed include structural, architectural, and utility components. The results show that weighting values for structure, architecture and utilities were 46.3%, 33.9% and 19.8%, respectively. In the structural components, it is found that the column, beam, and plate weighting values are 48.3%, 42.7% and 8.9%, respectively. In the architectural components, the weighting values for ceilings, walls, floors & ceramics, doors & windows are 11.7%, 36.6%, 8.8%, 42.9% respectively. In the utility components, the weighting values for electricity, electronics, elevators, building sensor systems, and plumbing are 30%, 22.3%, 4.9%, 19.1%, and 23.7%, respectively. After searching floors 1 to 11, it was seen that the structural components were still in exceptionally good condition. There is only minor damage to utility and architectural components that require maintenance such as repair or replacement of components that are no longer suitable for use.
Analisis Pengaruh Umur Bangunan Terhadap Tingkat Kepuasan Penghuni: Analysis of the Effect of Building Age on Occupant Satisfaction Levels Ramadhan, Muhammad Aulia Nur; Nugroho, Arief Setiawan Budi; Irawati, Inggar Septhia
Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Vol. 12 No. 2 (2023): Cantilever
Publisher : Department of Civil Engineering and Planning, Faculty of Engineering, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35139/cantilever.v12i2.223

Abstract

The relationship between residence and well-being, including physical health and emotional state, is widely recognized. Residence quality significantly impacts resident satisfaction, especially for students who require a conducive environment for effective learning. This study examines the impact of building age on resident satisfaction and willingness to pay at the Gadjah Mada University (UGM) dormitory. A questionnaire comprising 20 closed-ended questions evaluates building quality, management, and tariffs, while four questions gauge willingness to pay. With 136 responses from Dorm-50 (over 50 years old), Dorm-15 (over 15 years old), and Dorm-5 (under 5 years old), data is analyzed descriptively through multivariate analysis of variance and price sensitivity meter. Findings show that newer buildings do not always yield higher resident satisfaction. The socioeconomic background of the residents plays a crucial role in assessing satisfaction levels. MANOVA reveals distinct satisfaction levels among the three age groups concerning building quality, services, and rates. Price sensitivity assessment exposes disparities between current rentals and acceptable price ranges for occupants in each dorm. Certain floors or room types exceed acceptable rental ranges.
Analisa Tegangan Maksimal Cutter Planer pada Mesin Serut (Planer) Bambu Modular dengan Metode Elemen Hingga Kurniawan, Redho; Hendaryanto, Ignatius Aris; Sugiyanto, Sugiyanto; Krisnaputra, Radhian; Irawati, Inggar Septhia
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 7 No. 2 (2023)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v7i2.1572

Abstract

The cutter planer is one of the main components of a bamboo planer which functions to flatten the surface of the bamboo blades. The cutter planer has a problem, namely the maximum stress is not known due to the complexity of the components which is difficult to analyze using the mechanical equation calculation method, so that to overcome this problem a numerical method is used, namely the finite element method. In this study, an analysis was carried out on a cutter planer by comparing the process of cutting bamboo slats with two directions of rotation clockwise (CW) and counterclockwise (CCW). The material used in the cutter planer is HSS and bamboo material with petung bamboo. The results of this study show that the highest maximum stress distribution for the cutter occurs in CCW and the lowest maximum stress distribution for the cutter occurs in CW.
Analysis of the Comparison Between Residents' Perception and Field Measurement of Visual and Thermal Comfort (Case Study: Student Dormitory Building) Yulianto, Dwi; Irawati, Inggar Septhia; Nugroho, Arief Setiawan Budi
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 2 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i2.77370

Abstract

As public buildings, student dormitories must be comfortable as they host most of the students' lives and activities. A space's visual and thermal comfort significantly impacts the occupants' activities and productivity. Indicators for assessing the building comfort level include visual, thermal, and noise comfort in spaces or buildings. This paper presents the results study of the building's visual and thermal comfort measurement and the occupants' perception toward comfort. This paper also presents the comparison between that measurement and the occupants' perceptions. This research employs a mixed-methods approach consisting of qualitative methods (occupants' perception questionnaire) and quantitative methods (field measurements of lighting levels, air temperature, and humidity). Data were collected through questionnaires distributed to dormitory residents and field measurements using an Environmental Meter 4 in 1 to measure natural and artificial lighting levels, air temperature, and humidity. The data obtained were analyzed and then presented in a descriptive format. Based on residents' perceptions, the findings indicate that the overall visual and thermal comfort in the dormitory building falls within a good category. The field measurements on natural lighting, air temperature, and humidity show that the student dormitory building meets the established comfort standards. However, the artificial lighting of staircases and corridors doesn't meet the standards due to many non-functioning lights and low lumen levels. Overall, the lighting, temperature, and humidity conditions in the dormitory building are influenced by building design, orientation, surrounding environment, and occupants' behavior. To enhance comfort and health for residents, improvements in artificial lighting systems, enhancement of natural ventilation, and education on the importance of good air circulation are necessary.
Studi Perbandingan Perilaku Lentur Balok Bambu Menggunakan Sifat Mekanik Yang Diperoleh Dengan Metode Rerata Dan Persentil Ke-5: Studi Kasus Bambu Wulung (Gigantochloa Atroviolacea) Irawati, Inggar Septhia; Wusqo, Urwatul
Jurnal Permukiman Vol 15 No 1 (2020)
Publisher : Direktorat Bina Teknik Bangunan Gedung dan Penyehatan Lingkungan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31815/jp.2020.15.43-53

Abstract

Penggunaan bambu sebagai material konstruksi meningkat seiring dengan isu lingkungan yang semakin banyak dibahas. Namun demikian, tidak ada regulasi yang secara spesifik mengatur tentang desain konstruksi bambu di Indonesia. Penentuan sifat mekanik bambu di Indonesia kebanyakan masih diambil dari rata-rata hasil pengujian di laboratorium, sementara ISO 22156 mengatur penggunaan nilai persentil kelima dari hasil pengujian. Oleh karena itu, studi komparasi perilaku bambu yang nilai sifat mekanik dihitung menggunakan metode rata-rata dan persentil ke-5 hasil pengujian sangat penting untuk dilakukan karena akan meningkatkan perhatian dan pemahaman para perencana untuk menggunakan sifat mekanik dari persentil ke-5 hasil pengujian dalam perencanaan struktur bambu. Makalah ini menyajikan hasil studi komparasi perilaku lentur balok bambu yang sifat mekanik lentur, modulus elastisitas lentur dan modulus patah, dihitung menggunakan 3 metode yaitu metode rata-rata, metode persentil ke-5 ISO 22156, dan metode persentil ke-5 hubungan antara modulus elastisitas dan modulus lentur. Hasil analisis menunjukkan bahwa penggunaan modulus elastisitas dan modulus patah bambu yang didapatkan dari metode rata-rata hasil pengujian laboratorium tidak disarankan karena memberikan nilai kapasitas beban, baik pada beban maksimum maupun beban pada kondisi lendutan ijin, yang lebih tinggi dibandingkan data beban pada kedua kondisi yang diperoleh dari hasil pengujian lentur statik. Hal ini akan meningkatkan risiko kegagalan pada struktur bambu. Selain itu, hasil analisis menunjukkan bahwa persyaratan kekakuan adalah faktor yang lebih menentukan pada perencanaan struktur balok bambu. Penggunaan  nilai modulus elastisitas dan modulus patah yang diperoleh dari metode ISO 22156 lebih direkomendasikan.
Analisis Sifat Mekanis dan Fisis Bambu Menggunakan Metode Destruktif Junaid, Annisa; Irawati, Inggar Septhia; Awaluddin, Ali
Jurnal Teknik Sipil MACCA Vol. 7 No. 1 (2022): Jurnal Teknik Sipil MACCA
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/734q4945

Abstract

Peluang bambu sebagai bahan material yang bisa menjadi alternatif pengganti kayu karena mudah ditanam dan tidak memerlukan pemeliharaan secara khusus. Bambu dengan kualitas baik dapat diperoleh pada umur 3-5 tahun. Dengan sifat ini bambu dapat berperan dalam menjaga kestabilan lingkungan. Penelitian bertujuan untuk mengetahui sifat fisis dan mekanis pada bambu. Pengujian dilakukan pada Bambu Petung (Dendrocalamus asper), Bambu Wulung (Gigantochloa atroviolacea), dan Bambu Apus (Giganthochloa apus), masing-masing sebanyak 12 batang yang dipilih acak di toko bambu. Pengujian lentur bambu (destruktif) dilakukan dengan menggunakan Universal Testing Machine (UTM) untuk memperoleh nilai modulus elastisitas (MOE) dan modulus patah (MOR) bambu. Hasil yang diperoleh, modulus elastisitas (MOE) rata-rata dan kuat lentur patah (MOR) rata-rata seluruh bambu berturut-turut 17009 MPa dan 77 MPa. Hubungan modulus elastisitas statis (MOE) dan kuat lentur patah (MOR) menunjukkan korelasi yang baik, yaitu sebesar 0,6228. Sehingga nilai MOE dapat digunakan untuk memprediksi nilai MOR suatu bambu. Hasil kadar air diperoleh yaitu rata-rata 13,68%. Sedangkan berat jenis bambu rata-rata 656,03 kg/m3. Pada bambu jenis petung, kadar air lebih banyak dibanding bambu jenis apus dan wulung.
Field Static Loading Test on 40.8 m Span PCU Girder Bridge Yusuf, Effendi; Aminullah, Akhmad; Irawati, Inggar Septhia
ASTONJADRO Vol. 14 No. 3 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i3.18409

Abstract

Field load testing using static loading is widely applied as a non-destructive testing (NDT) method for bridge assessment due to its practicality and ability to provide immediate, on-site results. This approach is suitable for both new and old bridges, requiring strength evaluation to understand the behavior and fundamental characteristics of the bridge. In this paper, 40.8 span PCU Girder Bridge was tested with a static loading test to obtain key performance and response indicators, such as the maximum deflection of the bridge under static load. The research findings showed that the bridge’s maximum deflection was -13.8 mm from the field load test, indicating the bridge structure is below the design limit of -35.7 mm, confirming its capacity to support a 192-ton load. The experimental results indicate that the bridge remains within the elastic range when subjected to the planned test loads. This suggests that the bridge has sufficient load-bearing capacity. Additionally, these findings reflect the current condition of the structure, which can serve as a foundation for ongoing structural health monitoring and future maintenance of the bridge.
Optimasi Kekerasan dan Ketahanan Impact Baja VCN 150 dengan Variasi Tempering untuk Aplikasi Poros Track Roller Bearing pada Mesin Pembelah Bambu Krisnaputra, Radhian; Satiti, Nareswari Novita; Irawati, Inggar Septhia; Hendaryanto, Ignatius Aris; Sugiyanto, Sugiyanto; Bahari, Galuh
Jurnal Rekayasa Mesin Vol. 18 No. 3 (2023): Volume 18, Nomor 3, Desember 2023
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v18i3.4326

Abstract

Penggunaan mesin pembelah bambu dalam produksi bambu laminasi adalah untuk mengubah batang bambu menjadi bilah-bilah bambu. Pada mesin pembelah bambu di Rosse Bambu Yogyakarta terjadi kerusakan komponen yaitu patahnya poros track roller bearing. Poros mengalami mekanisme patah getas yang disebabkan oleh ketidaksesuaian pemilihan material. Diketahui bahwa poros yang patah terbuat dari baja karbon tinggi AISI 1080 yang telah melalui proses quenching. Poros track roller bearing dari mesin pembelah bambu diharapkan memiliki ketahanan impact yang tinggi namun juga harus memiliki nilai kekerasan yang sesuai dengan standar nilai kekerasan poros. Dengan memilih material substitusi yang ideal untuk poros dan mengidentifikasi proses perlakuan panas yang tepat untuk mendapatkan sifat material yang diinginkan, proses yang efektif dapat diketahui untuk meningkatkan masa pakai poros track roller bearing dan mengurangi potensi terjadinya kegagalan serupa. Tujuan dari penelitian ini adalah untuk mengetahui temperatur tempering optimum yang dapat dilakukan terhadap baja VCN 150 sebagai material substitusi poros track roller bearing pada mesin pembelah bambu. Pada penelitian ini proses perlakuan panas dilakukan dengan memanaskan spesimen uji pada temperatur 850 °C dalam tungku selama 1 jam kemudian dilanjutkan dengan quenching dengan media oli. Setelah quenching, dilakukan tempering pada temperatur 200 °C, 300 °C, dan 400 °C selama 1 jam kemudian dilanjutkan dengan pendinginan di udara bebas. Pengujian yang dilakukan meliputi uji struktur mikro, uji kekerasan Vickers, uji impact Charpy, dan analisis fraktografi menggunakan Scanning Electron Microscope pada permukaan patahan hasil uji impact. Hasil pengujian menunjukkan bahwa spesimen yang melalui proses tempering pada temperatur 400 °C memberikan hasil optimum dengan nilai kekerasan sebesar 359,92 HV dan harga impact sebesar 1,37 J/mm ².
Co-Authors Ahmad, Mohammad Ismail Ramadan Ali Awaludin Aminullah, Akhmad Arif Kusumawanto Awaluddin, Ali Bahari, Galuh Balqis, Ratu Irmi Dwi Yulianto Gumilang, Theo Satria Hardiansyah, Wisnu Agung Henricus Priyosulistyo, Henricus Ignatius Aris Hendaryanto Junaid, Annisa Kurniawan, Redho Nugroho, Arief Setiawan Budi Radhian Krisnaputra Ramadhan, Muhammad Aulia Nur Satiti, Nareswari Novita Sugiyanto - Suprapto Siswosukarto TATI NURHAYATI Wusqo, Urwatul Yusuf, Effendi