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

doi:10.5614/jts.2014.21.2.6

Cited by 7 publications

(6 citation statements)

References 3 publications

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“…Diaphragms stiffen the hollow culm and resist local buckling, thus shorter internodes result in higher column stiffness. Similar to other bamboo species [1,3,4], Guadua bamboo density and vascular bundles distribution are functionally graded, decreasing from outer to inner wall surface [1,5], which also improves the buckling resistance. The stiffness is also enhanced by alternating cell wall layers in addition to polymer composition and orientation [6].…”

Section: Nomenclaturementioning

confidence: 80%

Experimental study on buckling resistance of Guadua angustifolia bamboo column

Bahtiar

Malkowska

Trujillo

et al. 2021

Engineering Structures

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Section: Nomenclaturementioning

confidence: 80%

Experimental study on buckling resistance of Guadua angustifolia bamboo column

Bahtiar

Malkowska

Trujillo

et al. 2021

Engineering Structures

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“…Vascular bundles in bamboo culms are distributed unevenly and tend to decrease in number from the outside to the inside (Darwis et al, 2020;Grosser and Liese, 1971;Jeon et al, 2018a). The cell arrangement characteristics in bamboo culms, such as the distribution of vascular bundles and the percentage of fiber sheaths, directly affect their physical and mechanical properties (Abdullah et al, 2017;Bahtiar et al, 2016;Li and Shen, 2011;Li et al, 2021a). According to Bahtiar et al (2014), bamboo slats are a layered system in which the strength and stiffness of each layer are functions of the density of the vascular bundles.…”

Section: Introductionmentioning

confidence: 99%

“…The cell arrangement characteristics in bamboo culms, such as the distribution of vascular bundles and the percentage of fiber sheaths, directly affect their physical and mechanical properties (Abdullah et al, 2017;Bahtiar et al, 2016;Li and Shen, 2011;Li et al, 2021a). According to Bahtiar et al (2014), bamboo slats are a layered system in which the strength and stiffness of each layer are functions of the density of the vascular bundles. In this regard, the transformed cross-sectional method can be used as an analytical tool for estimating the strength and stiffness of bamboo slats and laminated bamboo.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Vascular Bundles and Fiber Sheaths in Nodes and Internodes of Gigantochloa apus Bamboo Strips on Tensile Strength

DARWIS,

HADIYANE,

SULISTYAWATI

et al. 2023

J. Korean Wood Sci. Technol.

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Bamboo culm is in the form of a tube/pipe, composed of internodes which are bounded by a partition/diaphragm (node). Anatomically, bamboo is composed of vascular bundles and parenchyma ground tissue. One of the constituents of vascular bundles is fibers that are grouped to form a fiber sheath. The anatomical structure of the nodes and internodes is thought to influence the strength of bamboo strips, including tensile strength. This study aimed to determine the characteristics of vascular bundles (distribution and fiber percentage) and their effects on the density and tensile strength of Gigantochloa apus bamboo strips with and without nodes. The bamboo culms were divided into three parts (outer, middle, and inner) along the radial direction. The results showed that the distribution of vascular bundles and percentage of fiber sheaths decreased significantly from the outer to the inner layer. This also had a significantly decreased density and tensile strength. Furthermore, the number of vascular bundles (in the transverse plane) was greater in the internodes than in the nodes. Anatomically, the orientation of the vascular bundles at irregular nodes is observed in the radial and tangential planes, where the direction is not only in the axial direction, but also in the radial and tangential directions. This caused the tensile strength of the G. apus bamboo strips to be lower at the nodes than at the internodes.

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“…Jansiri et al [19] stated that the lignin content in bamboo would impact the bamboo's mechanical properties. Bahtiar et al [20] added that α-cellulose has a more extended bond structure and is inversely proportional to hemicellulose, so a higher ratio of α-cellulose content will have a good effect on the tensile strength of bamboo.…”

Section: Introductionmentioning

confidence: 99%

Physical, Chemical, and Mechanical Properties of Six Bamboo from Sumatera Island Indonesia and Its Potential Applications for Composite Materials

et al. 2022

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The suitability of bamboo’s basic characteristics is very important for more specific purposes, such as composite raw materials. Anatomical, physical, mechanical, and chemical characteristics are some of bamboo’s fundamental characteristics. This study analyses the basic properties, such as physical, mechanical, and chemical properties of bamboo from the Forest Area with Special Purpose (FASP) Pondok Buluh Sumatera Island, Indonesia (I); analyses the relationship between the properties of each type of bamboo (II); and chooses the type of bamboo with the best properties that have the potential to be applied to composite materials, such as laminated bamboo (III). This study used materials consisting of six species of bamboo from the FASP Pondok Buluh. The manufacture of physical and mechanical test samples refers to the ISO 22157 standard, 2004, while the chemical properties test refers to the TAPPI 1999 standard. The chemical, physical, and mechanical properties of bamboo vary widely among species. The lowest holocellulose and α-cellulose content were found in the Kuning Bamboo (B. vulgaris var. vittata). The content of holocellulose and α-cellulose causes the lowest density in Kuning Bamboo (B. vulgaris var. vittata). The Dasar Bamboo (Bambusa vulgaris) has the highest levels of lignin. The substances have an impact on moisture content, T/R ratio, and shear strength. The Dasar Bamboo (Bambusa vulgaris) has the lowest moisture content, the highest T/R ratio, and the highest shear strength. However, Betung Bamboo (Dendrocalamus asper) has the highest density in this study. The compressive strength of the Betung Bamboo (Dendrocalamus asper) has the highest value. Therefore, Betung bamboo and Dasar Bamboo in this study were potentially utilized for composite materials, such as laminated bamboo.

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Rasio Ikatan Pembuluh sebagai Substitusi Rasio Modulus Elastisitas pada Analisa Layer System pada Bilah Bambu dan Bambu Laminasi

Cited by 7 publications

References 3 publications

Experimental study on buckling resistance of Guadua angustifolia bamboo column

Experimental study on buckling resistance of Guadua angustifolia bamboo column

Effect of Vascular Bundles and Fiber Sheaths in Nodes and Internodes of Gigantochloa apus Bamboo Strips on Tensile Strength

Physical, Chemical, and Mechanical Properties of Six Bamboo from Sumatera Island Indonesia and Its Potential Applications for Composite Materials

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