Fiber texture and mechanical graded structure of bamboo

Amada, Shigeyasu; Ichikawa, Yoshinobu; Munekata, Tamotsu; Nagase, Yukito; Shimizu, Hiroyuki

doi:10.1016/s1359-8368(96)00020-0

Cited by 404 publications

(247 citation statements)

References 6 publications

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“…Since Moso bamboo is the most important species commercially, most studies of mechanical properties of bamboo have been done on Moso. Nogata and Takahashi, Amada et al, and Shao et al are a few to study axial tensile properties with respect to this gradient, by testing tensile specimens from slices at different locations in Moso culms (Amada et al, 1997;Amada and Untao, 2001;Nogata and Takahashi, 1995;Shao et al, 2010). These studies consistently find that the axial Young's modulus ranges from around 5 to 25 GPa.…”

Section: Introductionmentioning

confidence: 98%

“…These studies consistently find that the axial Young's modulus ranges from around 5 to 25 GPa. The axial tensile strengths from these studies are less consistent, but the majority of data fall in the 100 to 400 MPa range (Amada et al, 1997;Amada and Untao, 2001;Nogata and Takahashi, 1995;Shao et al, 2010). Lo et al investigate axial compressive strength using full cylindrical sections of Moso bamboo culms with varying longitudinal position and fiber volume fraction, finding a range of 45 to 65 MPa (Lo et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Comparison of the structure and flexural properties of Moso, Guadua and Tre Gai bamboo

Dixon

Ahvenainen

Aijazi

et al. 2015

Construction and Building Materials

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Bamboo is an underutilized resource widely available in countries with rapidly developing economies. Structural bamboo products, analogous to wood products, allow flexibility in the shape and dimensions of bamboo structural members. Here, the ultrastructure, microstructure, cell wall properties and flexural properties of three species of bamboo (Moso, Guadua and Tre Gai) are compared. At a given density, the axial modulus of elasticity of Guadua is higher than that of Moso or Tre Gai, which are similar; ultrastructural results suggest that Guadua has a higher solid cell wall stiffness. At a given density, their moduli of rupture are similar.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Comparison of the structure and flexural properties of Moso, Guadua and Tre Gai bamboo

Dixon

Ahvenainen

Aijazi

et al. 2015

Construction and Building Materials

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“…The model in Figure 3(c) shows the BRep model obtained from the mesh in Figure 3(b), including the NURBS curves in the nodes and internodes areas from which it was generated. Previous studies (Amada et al, 1997;Chung and Yu, 2002) have indicated that the wall thickness of bamboo poles varies approximately linearly along their length and therefore the wall thickness of the BRep model is based on a linear interpolation of the cross-sections at the exposed ends of the poles. Preliminary fabrication trials based on the bamboo BRep models developed so far support this assumption, which will be continually assessed during the different stages of the research project.…”

Section: Structures and Buildingsmentioning

confidence: 99%

“…Amada et al, 1997;Dixon and Gibson, 2014). This research will expand this idealisation from the material to the element scale in order to take into account the effect of shape and form on the stiffness of bamboo poles.…”

Section: 2mentioning

confidence: 99%

BIM Bamboo: a digital design framework for bamboo culms

Lorenzo

Lee

Oliva-Salinas

et al. 2017

Proceedings of the Institution of Civil Engineers - Structures

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For decades bamboo has been identified as one of the most promising alternatives to help reduce the rising demand for industrialised building materials in the global south but numerous technical, normative and cultural challenges have so far prevented its widespread use in construction. In response, significant resources are currently being invested in the development of standardised, highly processed structural bamboo components following the unsustainable model of mass industrialisation prevalent in the global north. As a counterpoint, this research re-examines the structural use of natural bamboo culms against the backdrop of the digital age and postulates a new design and fabrication framework to support the construction of high-quality, sustainable and resilient bamboo structures suitable for the twenty-first century. This framework is based on the principles of building information modelling and is focused on managing, as opposed to forcibly eliminating, the inherent variability of a natural structural element through modern three-dimensional scanning, digital modelling and robotic fabrication. This paper presents the conceptual details of this framework with a particular focus on Mexico, one of the largest emergent economies in the world, as a potential implementation platform.

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“…The tissue is primarily composed of vascular bundles and parenchyma. The structure resembles a fiber-reinforced composite, with the vascular bundles (composed of fibers and conducting cells) and parenchyma acting analogous to fiber and matrix, respectively (Liese 1987;Amada et al 1997). The volume fractions of vascular bundles and their associated fibers increase sharply radially, going from the inside to the outside of the culm wall (Liese 1987;Nogata and Takahashi 1995;Amada et al direction slightly above the ranges reported for aspen OSB (450 to 710 kg/m 3 and 4 to 8 GPa) by Chen et al (2010).…”

Section: Introductionmentioning

confidence: 99%