Article Per Year (5 Year)
p-Index From 2020 - 2025
2.427
P-Index
This Author published in this journals
All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Teknologi Industri Pertanian J-Sil (Jurnal Teknik Sipil dan Lingkungan) Jurnal Ilmu dan Teknologi Hasil Hutan Forum Pasca Sarjana Teknik Mesin "TEKNOLOGI" Jurnal Keteknikan Pertanian Indonesian Journal of Forestry Research Jurnal Penelitian Hasil Hutan Jurnal Matematika & Sains Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Teknik Sipil Journal of Architectural Research and Design Studies Jurnal Rekayasa Sipil Gorontalo Journal of Forestry Research Jurnal Ilmu dan Teknologi Kayu Tropis PERENNIAL ULIN: Jurnal Hutan Tropis Jurnal Penelitian Hasil Hutan Wood Research Journal : Journal of Indonesian Wood Research Society Wood Research Journal : Journal of Indonesian Wood Research Society Indonesian Journal of Physics (IJP) Indonesian Journal of Forestry Research Jurnal Penelitian Hasil Hutan J-Sil (Jurnal Teknik Sipil dan Lingkungan)
Naresworo Nugroho
Departemen Hasil Hutan, Fakultas Kehutanan Institut Pertanian Bogor Jl. Raya Darmaga, Bogor 16680
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Transportation

Published : 60 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 60 Documents
Search

 1   2   3   4   5 
Method to Calculate the Average Overal Value of Modulus Elasticity and Modulus of Rupture for Glulam I-Joist in Bending Effendi Tri Bahtiar; Naresworo Nugroho; Rentry Augusti N; Han Roliadi
Jurnal Matematika & Sains Vol 16, No 3 (2011)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstract Glulam consists of laminaes and each laminae influences glulams strength. Transformed cross section (TCS) method is well known as a method to calculate the average overall value of Modulus of Elasticity (E) and Modulus of Rupture (SR) of layer system (e.g. glulam) based on its laminaes.  But, TCS does not follow the principal due to assumption that the material properties depend on its shape and size. Therefore, new calculation method is required.  This paper discusses the formulation of a new method to determine the E and SR of glulam.  E and SR calculated by TCS and new method give identical value. The new method applies the independencies of E and SR which could not be fulfilled by TCS.  According to this fact, TCS could be replaced by new method. The theoretical value as a result of TCS and the new method were verified by empirical test based on ASTM D198 two points loading bending test. The theoretical E value is higher than the empirical value, but it has high correlation (R2=68.53%). On the contrary, the theoretical SR value is not significant different with its empirical value, but it has poor correlation (R2=27.93%).  This condition is happened because of finger joint effect on the compression and tension side of the sample. By including finger joint effect into regression analysis, the equation results very good estimation.  The coefficient of determination is 99.58% and 97.19%, for E and SR respectively. Keywords: Glulam I-joist, Modulus of elasticity, Modulus of rupture, Transformed cross section (TCS), New method. Abstrak Glulam tersusun dari lamina-lamina dan setiap lamina  menyumbangkan pengaruh terhadap kekuatan glulam.  Transformed Cross Section (TCS) telah dikenal luas sebagai sebuah metode untuk menghitung nilai Modulus Elastisitas (E) dan Keteguhan Lentur Statis (SR) sistem lapisan termasuk glulam berdasarkan sifat-sifat lamina penyusunnya. Namun TCS tidak memenuhi prinsip asumsi keterkaitan antara sifat material dengan ukuran dan bentuknya. Oleh karena itu diperlukan suatu metode baru yang lebih konsisten terhadap prinsip independensi tersebut. Di dalam tulisan ini dibahas formulasi metode baru untuk memperkirakan E dan SR  glulam.  Perhitungan TCS dan metode baru memberikan nilai yang identik baik untuk E maupun SR, namun metode baru menunjukkan konsisten yang lebih baik terhadap independensi sifat material. Berdasarkan fakta tersebut maka TCS dapat digantikan oleh metode baru yang dibahas. Hasil perhitungan teoritis menggunakan TCS dan metode baru tersebut, selanjutnya diverifikasi empiris melalui pengujian lentur berdasar ASTM D198 dengan konfigurasi beban ganda. Nilai E teoritis lebih tinggi daripada hasil empirisnya, namun keduanya memiliki korelasi yang relatif tinggi (R2=68,53%). Sebaliknya, SR teoritis tidak berbeda nyata dibanding nilai empirisnya, namun korelasi keduanya rendah (R2=27.93%). Kondisi ini terjadi akibat pelemahan oleh keberadaan sambungan jari pada wilayah tarik ataupun tekan pada contoh uji. Dengan memasukkan pengaruh sambungan jari pada analisis regresi berganda, dapat diperoleh persamaan regresi yang cukup baik untuk menduga nilai E dan SR glulam. Nilai koefisien determinasinya adalah 99,58% untuk E, dan 97,19% untuk SR. Kata kunci: Glulam I-joist, Modulus elastisitas, Keteguhan lentur patah, Transformed cross section (TCS), Metode baru.
Rasio Ikatan Pembuluh sebagai Substitusi Rasio Modulus Elastisitas pada Analisa Layer System pada Bilah Bambu dan Bambu Laminasi Bahtiar, Effendi Tri; Nugroho, Naresworo; Karlinasari, Lina; Darwis, Atmawi; Surjokusumo, Surjono
Jurnal Teknik Sipil Vol 21, No 2 (2014)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1007.219 KB)

Abstract

Abstrak. Anatomi bambu disusun oleh sel-sel yang heterogen. Komponen anatomi bambu yang memberikan sumbangan terbesar pada sifat mekanisnya adalah ikatan pembuluh, sehingga kerapatan ikatan pembuluh dapat digunakan sebagai variabel dasar untuk menganalisa sifat mekanis bambu. Kerapatan ikatan pembuluh bergradasi dari tepi hingga ke dalam bambu sehingga dapat diturunkan suatu fungsi linier ataupun non linier sebagai pendekatannya. Rasio modulus elastisitas (E) yang lazim digunakan pada metode transformed cross section, pada penelitian ini dicoba diganti dengan rasio ikatan pembuluh dengan asumsi bahwa keduanya adalah ekuivalen. Hasil penelitian memperlihatkan bahwa terdapat nilai korelasi Pearson yang tinggi antara hasil teoritis dan hasil empiris, sedangkan hasil uji t-student data berpasangan menunjukkan bahwa tidak ada perbedaan yang signifikan antara keduanya. Dengan demikian model transformasi yang diturunkan dapat digunakan untuk melakukan analisa layer system pada bilah bambu maupun bambu laminasi dengan hasil yang dapat dipertanggungjawabkan. Dari ketiga model transformasi terpilih (linier, logaritmik, dan power) model power adalah model yang terbaik karena menghasilkan nilai yang paling mendekati data empiriknya.Abstract. Bamboo anatomy is constructed from many types of cells. Vascular bundles are the cells which give the highest contribution to the bamboo strength, thus the density distribution of vascular bundles could be used as the main variable for analyzing the layer system of bamboo strip and laminated bamboo. The density of vascular bundles distribution degrade from outer to inner in a regular manner which could be fitted by linear and nonlinear function. Ratio of modulus of Elasticity (E) which widely used in transformed cross section method for analyzing the layered system was substituted by ratio of density distribution of vascular bundles within assumption that both are highly correlated. The data in this study proved that there was high Pearson’s correlation between the theoretical and empirical result, and the paired t-student test also showed both were not significantly different; thus the new method could be applied in very good result. There are three model applied in this study namely linear, logarithm, and power. Power model is the best among others since its theoretical results the nearest estimation to the empirical measurement.
Pendugaan Sisa Umur Pakai Kayu Komponen Cooling Tower di Pembangkit Listrik Tenaga Panas Bumi (PLTP) Unit II Kamojang Bahtiar, Effendi Tri; Nugroho, Naresworo; Arinana, Arinana; Darwis, Atmawi
Jurnal Teknik Sipil Vol 19, No 2 (2012)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Abstrak. Struktur cooling tower di PLTP (Pembangkit Listrik Tenaga Panas Bumi) Unit II Kamojang dibangun pada tahun 1988 dengan kayu sebagai komponen utamanya. Setelah 23 tahun umur pakainya, dirasa perlu dilakukan evaluasi sisa umur pakai sebagai salah satu bahan pertimbangan untuk memutuskan perobohan atau perpanjangan pemakaiannya. Evaluasi dilakukan melalui beberapa tahap yaitu: identifikasi jenis kayu dan keberadaan sisa bahan pengawet, pengukuran kedalaman kerusakan, pengujian sifat fisis mekanis, dan pemodelan matematis yang diturunkan dari uji creep dan pengurangan luas penampang kayu. Identifikasi memperlihatkan bahwa kayu yang dipergunakan untuk komponen utama cooling tower di PLTP Unit II Kamojang adalah redwood (Sequoia sempervirens) yang diawetkan dengan CCA (Chromated Copper Arsenat). Kerusakan telah terjadi sedalam 2,95 mm, namun secara umum masih memiliki tegangan ijin yang lebih tinggi daripada persyaratan NDS2005. Penelitian ini telah menghasilkan model terbaik yang dapat dipergunakan untuk menduga sisa masa pakai kayu komponen cooling tower di PLTP Unit II Kamojang dengan koefisien determinasi sebesar 86,84%. Abstract. Cooling tower in PLTP (Geothermal Power Plant) Unit II Kamojang was built in 1988, using solid wood as its main komponen. It is 23 years old nowadays, and should be evaluated to estimate its remaining lifetime. The evaluation conducted as scientific consideration for the company to decide wheter the cooling tower should be deconstruct or maintain to lenghten their lifetime. Some steps were conducted to estimate the remaining lifetime, namely: identification of wood species and the preservative remaining,measuring the depth of damages, measuring the physical and mechanical properties, and mathematical modelling which construct from creep testing and area reduction. This research show that the cooling tower was built with redwood (Sequoia sempervirens) which were treated with CCA (Chromated Copper Arsenat) preservative. The damage was happened until 2,95 mm depth, but the mechanical properties was commonly still better than NDS 2005 requirement. The  research result mathematical equation which is suitable to predict the remaining lifetime of wood component in PLTP Unit II Kamojang with coefficient of determination 86,84%.
Kekakuan dan Kekuatan Lentur Maksimum Balok Glulam dan Utuh Kayu Akasia Sulistyawati, Indah; Nugoho, Naresworo; Suryokusumo, Surjono; Hadi, Yusuf Sudo
Jurnal Teknik Sipil Vol 15, No 3 (2008)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (373.651 KB)

Abstract

Abstrak. Glulam merupakan salah satu metoda mengatasi keterbatasan dimensi bahan dasar kayu yang tersedia. Dengan mempersiapkan lamina-lamina dan menyusunnya serta melakukan proses perekatan antar permukaan lamina dapat menghasilkan dimensi balok sesuai kebutuhan. Tujuan dari penelitian ini adalah mendapatkan nilai kekakuan dan kekuatan lentur maksimum balok glulam dengan ketebalan lamina yang berbeda serta membandingkannya terhadap balok utuh. Kekakuan dinyatakan dalam MOE (modulus of elastcity), dan kekuatan lentur maksimum dinyatakan dalam MOR (modulus of rupture). Penelitian ini menggunakan kayu Akasia (Acacia mangium) termasuk kayu dengan kerapatan menengah. Balok glulam dibagi menjadi 3 (tiga) kelompok ketebalan lamina, masing-masing 20 mm, 15 mm and 10 mm. Selain balok glulam disiapkan pula balok utuh. Penampang melintang balok glulam maupun balok utuh adalah 60 mm x 60 mm. Perekat yang digunakan adalah Polyurethane merupakan Water Based Polymer Isocyanate. Perekat terdiri dari dua bagian; begian pertama adalah PI 3100 sebagai cairan resin, dan H7 sebagai cairan pengeras. Berat labur perekat diaplikasikan sebesar 280 g/m2 pada kedua permukaan rekatan. Prosedur pengujian dilaboratorium dilakukan berdasarkan ASTM D143-05, Standard Test Methods for Small Clear Specimen of Wood. Hasil penelitian menunjukkan bahwa konfigurasi penampang melintang balok glulam mempengaruhi nilai MOE dan MOR-nya; semakin tipis ketebalan lamina mempunyai tendensi semakin tinggi MOE dan MOR-nya; nilai MOE dan MOR balok glulam tidak berbeda nyata dengan balok utuh, dan kedua nilai tersebut dipengaruhi oleh tipe kerusakan balok. Abstract. Glued Laminated Beam represents one method in overcoming limited dimension of available raw material of wood. By stacking sequence of several timber layers to be bonded with glue  perfectly, the dimension which was required could be obtained. The objectives of this research were to determine the stiffness and maximum bending strength of glued laminated beam (glulam) with different thickness of lamina; it was compared to solid beam. The stiffness was represented as MOE (modulus of elasticity), and maximum bending strength as MOR (modulus of rupture). This research used Acacia (Acacia mangium) as a medium density wood. Glulam beam was divided into 3 (three) groups based on the thickness of lamina, 20 mm, 15 mm and 10 mm respectively. Solid beam was also prepared besides glulam beam. The cross section of glulam and solid beam was 60 mm x 60 mm. The adhesive, Polyurethane was used as Water Based Polymer Isocyanate. It consisted of two parts; the first part of the adhesive was PI 3100 as a liquid resin, and H7 as a liquid hardener. The two parts were mixed in the ratio of 100:15 by weight. The glue spread of adhesive was applied 280 g/m2 in a double spread. The procedure of investigation in the laboratory was tested in accordance with ASTM D143-05, Standard Test Methods for Small Clear Specimen of Wood. The result showed that the cross section configuration of glulam beam influenced in the value of MOE and MOR; the lesser the thickness of lamina the higher MOE and MOR value tendency were; the MOE and MOR of glulam beam were not significant different with solid beam, and it were influenced by the type of failure.
Karakteristik Kekuatan Leleh Lentur Baut Besi dengan Beberapa Variasi Diameter Baut Herawati, Evalina; Sadiyo, Sucahyo; Nugroho, Naresworo; Karlinasari, Lina; Yoresta, Fengky Satria
Jurnal Teknik Sipil Vol 24, No 3 (2017)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1236.88 KB) | DOI: 10.5614/jts.2017.24.3.4

Abstract

AbstrakBaut merupakan salah satu jenis alat sambung mekanis atau pengencang yang banyak digunakan dalam sambungan kayu. Penelitian ini bertujuan untuk menentukan kekuatan leleh lentur (Fyb) dari tiga ukuran diameter baut besi yang umum digunakan untuk sambungan kayu dan satu ukuran diameter baut baja sebagai pembanding. Spesifikasi baut yang digunakan dilihat dari dimensi dan komposisi penyusunnya. Nilai Fyb baut diperoleh dari pengujian momen leleh lentur dengan mengacu pada standar ASTM F1575. Hasil pengujian menunjukkan baut besi yang digunakan berasal dari bahan baja karbon rendah sedangkan baut baja berasal dari bahan baja karbon sedang. Nilai Fyb baut baja lebih tinggi dibandingkan baut besi. Nilai Fyb baut besi diameter 1/2 inci berbeda nyata dengan nilai baut diameter 5/8 dan 3/4 inci. Nilai Fyb ketiga diamater baut berada di atas nilai Fyb baut yang tercantum dalam SNI 7973:2013 tentang Spesifikasi desain untuk konstruksi kayu.AbstractBolt is one of the mechanical fasteners that are widely used in wood connections. This study aims to determine the bending yield strength (Fyb) of three measures of bolt diameter made from iron which commonly used for the connection of wood and one measure of bolt diameter made from steel as a comparison. Specifications of bolts used can be seen from the dimensions and composition of the constituent. Testing of the bending yield strength was conducted according to ASTM F1575. The results showed that iron bolts used comes from low carbon steel, while steel bolts derived from medium carbon steel materials. Fyb value of steel bolts was higher than iron bolt. Fyb value of 1/2 inch diameter iron bolts was significantly different from the value of the bolts 5/8 and 3/4 inch in diameter. The Fyb value of three bolt diameter were above the Fyb value listed in SNI 7973:2013 concerning design specification for wood constructions.
Pengaruh Komponen Kimia dan Ikatan Pembuluh terhadap Kekuatan Tarik Bambu Bahtiar, Effendi Tri; Nugroho, Naresworo; Suryokusumo, Surjono; Lestari, Dwi Premadha; Karlinasari, Lina; Nawawi, Deded Sarip
Jurnal Teknik Sipil Vol 23, No 1 (2016)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1243.724 KB) | DOI: 10.5614/jts.2016.23.1.4

Abstract

Abstrak. Bambu merupakan salah satu contoh material komposit alami yang tersusun atas beraneka ragam sel. Sel-sel fiber yang tersusun menjadi ikatan pembuluh diyakini merupakan sel yang paling bertanggung jawab terhadap kekuatan bilah bambu. Selain jumlah ikatan pembuluh, kekuatan tarik bambu juga dipengaruhi oleh kandungan komponen kimia dan bagian ruas/buku. Penelitian ini menunjukkan bahwa semakin banyak jumlah ikatan pembuluh, maka kekuatan tarik bambu semakin besar. Kandungan lignin meningkatkan kekuatan tarik pada bagian ruas secara proporsional (linier), bahkan kuadratik pada bagian buku. Peningkatan kandungan lignin dalam selang yang ditemukan dalam penelitian ini (33%) selalu meningkatkan kekuatan tarik bilah bambu sehingga titik balik maksimum tidak dapat ditemukan. Tingginya nilai korelasi kekuatan tarik dengan proporsi alpha selulosa terhadap holoselulosa pada bagian ruas memperlihatkan pentingnya peranan proporsi alpha selulosa tersebut, meskipun prosedur best subset regression tidak membacanya akibat terjadinya autokorelasi. Abstract. Bamboo is natural composite material which is built from many types of cells. Fibers cells which are bundled become vascular bundles have highest contribution toward the strength of bamboo split among others. Besides the amount of vascular bundles, the bamboo split strength is also determined by chemical component of cell walls and its position (internodes/node). This research reported that the tensile strength has positive correlation with the amount of vascular bundles. If the amount vascular bundles increase, then the tensile strength also increases. The increasing of lignin contents in cell wall proportionally and quadratically increases the tensile stress of internodes and node of bamboo split, respectively. This research did not found the maximum stationer  point of quadratic equation for lignin content effect toward bamboo split tensile strength, thus the tensile strength always increase along with the lignin content in this research range (<33%). Correlation value between tensile strength and ratio of alpha cellulose to holocellulose is high which prove that alpha cellulose highly contribute to the tensile strength even though best subset regression procedure could not identified this phenomenon because of its autocorrelation occurrence.
Desain Kekuatan Sambungan Geser Tunggal Menggunakan Paku pada Lima Jenis Kayu Indonesia Sutanto, Riezky Rakamuliawan; Sadiyo, Sucahyo; Nugroho, Naresworo
Jurnal Teknik Sipil Vol 25, No 1 (2018)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1374.393 KB) | DOI: 10.5614/jts.2018.25.1.4

Abstract

AbstrakStandar Nasional Indonesia (SNI) 7973 (2013) adalah standar yang umum digunakan dalam penentuan konstruksi kayu di Indonesia. Dalam SNI-7973 terdapat cara penentuan nilai desain sambungan kayu secara teoritis yang saat ini masih mengadopsi nilai-nilai yang diperoleh dari National Desain Specification (NDS) (2012). NDS sendiri disusun berdasarkan sifat-sifat kayu berdaun jarum yang umum digunakan di Amerika. Nilai-nilai yang diadopsi tersebut tentunya meningkatkan resiko ketidaksesuaian jika digunakan langsung di Indonesia, hal ini karena Indonesia sebagai negara tropis memilki kayu dengan rentang berat jenis yang lebih besar dan didominasi oleh kayu berdaun lebar dengan struktur anatomi yang berbeda. Penelitian ini membandingkan nilai desain sambungan kayu yang diperoleh dari pengujian secara empiris dengan nilai desain sambungan yang dihasilkan secara teoritis berdasarkan SNI-7973 dan Eurocode 5 (EC-5) (2004). Hasil penelitian menunjukan nilai desain sambungan kayu terendah diperoleh pada sambungan kayu Paraserienthes falcataria menggunakan paku 10 cm sebesar 53.66 kgf dan nilai tertinggi diperoleh pada sambungan kayu Shorea laevifolia menggunakan paku 15 cm sebesar 149.89 kgf. Penentuan nilai desain teoritis SNI-7973 menghasilkan nilai lebih rendah sebesar 13.65% sedangkan EC-5 menghasilkan nilai lebih tinggi 8.87% dibandingkan nilai yang diperoleh pada pengujian empiris.AbstractStandar Nasional Indonesia (SNI) 7973 (2013) is a standard that commonly used in the determination of wood construction in Indonesia. In SNI-7973 there is a theoretical method to determining the design value of wood connection that currently still adopt the values derived from National Design Specification (NDS) (2012). NDS itself is structured based on the properties of softwood that commonly used in America. The values adopted are certainly increase the risk of incompatibility if used directly in Indonesia, this is because Indonesia as a tropical country has wood with wider range of specific gravity and dominated by hardwood with different anatomical structures. This study compares the value of single shear wooden connection design obtained from empirical testing with theoretically generated connection values based on SNI-7973 and Eurocode 5 (EC-5) (2004). The results showed the lowest design value of wood connections obtained on Paraserienthes falcataria wood connection using 10 cm nail by53.66 kgf and the highest value obtained on Shorea laevifolia wood connection using 15 cm nail by 149.89 kgf. The determination of the theoretical design value based on SNI-7973 yielded a lower value of 13.65% while EC-5 yielded a higher value of 8.87% than the value obtained from empirical testing. 
The Characteristics of the Laminated Board of Oil Palm Trunk Darwis, Atmawi; Massijaya, Muhammad Y; Nugroho, Naresworo; Alamsyah, Eka M
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 2 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Jurnal Ilmu dan Teknologi Kayu Tropis

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (672.967 KB)

Abstract

The purpose of this study was to determine the physical and mechanical properties of glue laminated (glulam) of oil palm trunks lumber (OPTL) composed of different number of layers and trunk heights (2 m, 4 m, and 6 m). The number of layers was varied at 2, 3 and 4 layers with the thickness of lamina of 3 cm, 2 cm, and 1.5 cm, respectively. The results showed that the glulam of OPTL retained higher density and mechanical properties compared to those of its solid form. The properties of OPTL glulam decreased from the bottom to the top division of the trunk. The physical and mechanical properties of glulam increased with increasing layers. Modulus of Elasticity (MOE) of OPTL 4 layered glulam increased by more than 50% compared to that of its solid OPT. Isocyanate based adhesive used to produce the glulam resulted in a satisfied bonding indicated by 100% and 0% wood damage in shear and delamination test, respectively. The mechanical properties of OPTL glulam (MOE, MOR, and shear strength) failed to satisfy the requirement of Japan Agricultural Standard for Glued Laminated: No 1152 (2007).Keywords: glulam, laminae, oil palm trunk, physical-mechanical properties
Analisis keragaan panel sandwich untuk rumah pra-pabrikasi Naresworo Nugroho; Effendi Tri Bahtiar
Jurnal Ilmu Pertanian Indonesia Vol. 15 No. 3 (2010): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (787.821 KB)

Abstract

In the last five years, several earthquakes struck several places in Indonesia and thousands of people died caused of their masonry house. Therefore, the idea of bamboo utilization in the form of structural sandwich panel components for anti-seismic pre-fabrication house is one of appropriate way out. This research describes the performance and behavior of engineered structure wooden-bamboo sandwich panel in full sized test. The wall frame being use were meranti wood, this frame attached by plywood as face and back, then 5 em bamboo cutting as core; the fastener used in this study were isocyanate resin and nails. This study carried out by experimental data of full scale structural tests on shear wall (ISO 22452). These result showed that the seismic reliability of the wall frame system made of bamboo sandwich panel was appropriate and will be useful for prefabrication houses as anti-seismic and environment friendly residential building.
Karakteristik Oriented Strand Board dari Kayu Akasia dan Afrika Berdasarkan Penyusunan Arah Strand Nurhaida Nurhaida; Naresworo Nugroho; Dede Hermawan
Jurnal Ilmu Pertanian Indonesia Vol. 13 No. 1 (2008): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (341.937 KB)

Abstract

The research objectives arc to evaluate physical and mechanical properties of OSB based on strands orientation; and to evaluate physical and mechanical properties of OSB made from akasia wood (Acacia mangium Wild) and afrika wood (Maesopsis eminii Engl). Akasia and afrika wood are used for OSB strand material with phenol formaldehyde (PF) as adhesives and addition of paraffin. OSB made in this research is consist of three plies whereas are differed into eight (8) strand orientations. In the making process, hot press was carried out at 160OC and pressure 25kg.cm-2 for 15 minutes. Determination of OSB physical and mechanical properties is referred to JIS A 5908-2003. Result showed that strand orientations has no affect to OSB physical properties except for linicr swelling 24h, but it significantly influence all mechanical properties of OSB. Wood species have an effect on mechanical properties of OSB in the dry test, wet MOE lengthwise test and OSB physical properties, particularly to OSB density and water absorbing capability at 2h and 24h. All of OSB physical properties arc meet JIS A 5908-2003 standard, but not all of the mechanical properties such as dry MOE lengthwise, dry MOE and MOR widthwise. The best physical and mechanical properties is presented by OSB made from akasia wood in strand orientation F, G, Band C whereas all parameters meet JIS A 5908-2003 standard. In comparation with strand orientation B that is frequent used in industry, strand orientation F and G arc proficient to raise the modulus elasticity value (MOE) and strength (MOR) as much as 167.81-231.65% and 89.73-109.87%, respectively; especially in widthwise board application. Furthermore, strand orientation F and G arc more flexible as structural components.   Keywords: oriented strand board, phenol formaldehyde, strand orientation
Co-Authors . Febriyani A.A. Ketut Agung Cahyawan W Adi Satriawan Adik Bahanawan Adzkia, Ulfa Agustina Hayatunnufus Agustina Hayatunnufus Agustina Hayatunnufus Akrom, Akrom Alamsyah, Eka M Arinana Arinana Arya Budhijatmiko Lelono Arya Budhijatmiko Lelono Asep Denih Atmawi Darwis Atmawi DARWIS Azhar Anas Bahanawan, Adik Budi Indra Setiawan Christiawan, Nikolaus Adven Dalhar Susanto Danang S. Adi Dede Hermawan Deded Sarip Nawawi Dina SETYAWATI Dodik R Nurrochmat Dwi J Priyono Dwi Joko Priyono Dwi Premadha Lestari Effendi Tri Bahtiar Eka M Alamsyah Erizal , Evalina Herawati Fengky Satria Yoresta Gina Bachtiar Gina Gina Bachtiar Gustian Rama Putra Gustian Rama Putra Hady Ikhsan Han Roliadi Han Roliandi Hartanto, Rachmat Pudjo Hasanuddin Hasanuddin Hayatunnufus, Agustina I Wayan Darmawan Ignasia Maria Sulastiningsih Indah Sulistyawati Indah Sulistyawati, Indah Isna Yuniar Wardhani Istie Rahayu Jajang Suryana Karlinasarie, Lina Khairun Hidayat Khairun Hidayat Kholiyah Kholiyah Larasatie, Pipiet Leonard D D Liliefna Leopold O. Nelwan Lestari, Dwi Premadha Lina Karlinasari Lusita WARDANI Massijaya, Muhammad Y Muh Yusram Massijaya Muh. Sakti Muhammadiah Muh. Yusram Massijaya Muhammad Y Massijaya Nurhaida, . Remy Marchal Rentry Augusti Rentry Augusti N Riezky Rakamuliawan Sutanto Rita Kartika Sari S. Adi, Danang Sucahyo Sadiyo Sulistyono Sulistyono . Sulistyono Sulistyono Surjono Surjokusumo Surjono Surjokusumo Surjono Surjokusumo Surjono Surjokusumo Surjono Suryokusumo Surjono Suryokusumo Surjono Suryokusumo, Surjono Suryokusumo, Surjono Sutanto, Riezky Rakamuliawan Teguh Darmawan Teguh DARMAWAN Wahyu Dwianto Wahyu DWIANTO Widyarko Widyarko Wilis Wiryawan Yusuf S Hadi Yusuf S. Hadi Yusuf Sudo Hadi