Seawater exposure effect on the fracture toughness of low-density woods/GRP sandwich systems

Neşer, Gökdeniz

doi:10.1007/s10086-009-1084-7

Cited by 6 publications

(7 citation statements)

References 13 publications

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“…Delamination-like debonding failure between a facesheet (Figure 15) and balsa core is governed by the facesheet-core interfacial strength and fracture toughness. Several studies have investigated the effect of adhesion on the properties of balsa core sandwich structures [138][139][140][141][142][143][144]. Moreover, the part processing technique and type of resin used in the fabrication of the sandwich structure typically govern the resultant facesheet-core interfacial fracture toughness.…”

Section: Facesheet Adhesionmentioning

confidence: 99%

Review of balsa core sandwich composite structures

et al. 2022

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Section: Facesheet Adhesionmentioning

confidence: 99%

Review of balsa core sandwich composite structures

et al. 2022

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“…Bamboo offers significant structural and environmental advantages to meet these needs. In addition, it is far faster-growing than all kinds of wood and has a higher ability to fix carbon (Figure a). , As a construction material, bamboo also exhibits stronger specific strength and fracture toughness than wood (Figure a). ,− …”

Section: Introductionmentioning

confidence: 99%

Quantitative Visualization of Weak Layers in Bamboo at the Cellular and Subcellular Levels

Chen

Wei

Tang

et al. 2020

ACS Appl. Bio Mater.

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Weak layers in bamboo, which are prone to the generation of cracks or are the preferred routes for crack growth, govern the machining processes and applications of bamboo. Weak layers are avoided during storing but are utilized during splitting and slicing. Gaining an understanding of the weak layers is a priority that will allow for the determination of whether to avoid or utilize them. In this study, scanning electron microscopy was used to observe the weak layers at the cellular and subcellular levels. A nanoindentation instrument and a Raman microscope were used to quantitatively characterize the mechanical properties and chemical components of these weak layers. The results show that among the three types of bamboo cells, vessel cells were the most vulnerable to damage, while fiber cells were the least susceptible to damage. The weak layers at the subcellular level were compound middle lamella (CML), thin layers of cell walls, and pits. The average storage modulus values were as follows: 13.7 GPa for CML, 17.0 GPa for pits, 20.6 GPa for thin layers, and 25.3 GPa for thick layers. Compared with the thick layers, the maximum decrement of cellulose content was 51% in CML and 41% in thin layers. With the lowest cellulose content, CML was the likeliest subcellular structure in which cracks propagated. The hardness of the pits was lower than that of the adjacent non-pit areas. The mechanical properties of bamboo increased by targeted modification of the weak layers. This work demonstrates a comprehensive investigation into weak layers of bamboo and quantitatively visualizes their mechanical and chemical properties.

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“…This species, besides being used for the recovery of degraded areas and in agroforestry systems, can be used for paper and pulp, boat and ceilings and ceiling linings manufacturing, besides having characteristics (emetic, diuretic and expectorant) that can be used in the medical area [10] and it is also considered a good thermal insulation [11][12][13][14][15].…”

Section: Introduction mentioning

confidence: 99%

Risk Analysis of the Economic Benefits of Ochroma pyramidale: A Case Study of Forest Planting in Brazil

Miyajima¹,

Barreto²,

Oliveira³

et al. 2018

JAST-B

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The forest investment projects, analyzed through the application of simulation techniques, allow measuring more accurately the benefits or losses, considering the systemic uncertainties related to forest plantation. In this perspective, the objective of this study was to identify the relative importance of sources of uncertainties in determining the net present value (NPV) of planting of Ochroma pyramidale on a forested property located in the state of São Paulo, Brazil. Thus, it assigns probability distributions to the parameters with uncertainties and applies the Monte Carlo technique to obtain the stochastic behavior of the NPV, of the modified internal rate of return (MIRR) and the profitability index (PI). The probabilistic results of the quantitative methods analyzed allowed us to conclude that for the planting O. pyramidale, with 5-year cutting age, indicated economic profitability. In addition, there is a probability that 84.6% of the project will add economic value to the invested capital.

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Seawater exposure effect on the fracture toughness of low-density woods/GRP sandwich systems

Cited by 6 publications

References 13 publications

Review of balsa core sandwich composite structures

Review of balsa core sandwich composite structures

Quantitative Visualization of Weak Layers in Bamboo at the Cellular and Subcellular Levels

Risk Analysis of the Economic Benefits of Ochroma pyramidale: A Case Study of Forest Planting in Brazil

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