Optimizing the Cutting of Tension Wood in Rubberwood: An Economic and Quality Perspective

Ratnasinga, J.; Pew, T. `Ng

doi:10.3923/jas.2010.2454.2458

Cited by 5 publications

(2 citation statements)

References 10 publications

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“…They can be calibrated to measure exact forces with very small margins of error. The simplest of data acquisition systems consist of a single transducer connected to a single saw tooth, aligned to measure the force in the direction of cutting (Ratnasingam and Scholz 2011). Where three transducers are simultaneously used to measure forces in the X, Y, and Z directions, they are collectively referred to as a force dynamometer.…”

Section: Tool Forcesmentioning

confidence: 99%

A Review of Wood Machining Literature with a Special Focus on Sawing

Naylor¹,

Hackney²

2013

BioResources

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In this review, fundamental wood machining research is evaluated to determine the general cutting mechanics of simple, orthogonal, and oblique cutting tools. Simple tool force trends and chip formation characteristics are indentified here, along with the cause and effects of tool wear. In addition to this, specific methods of evaluating sawing processes have been investigated. These include the use of piezoelectric dynamometers to record tool forces and high speed photography to evaluate chip formation. Furthermore, regression analysis has been previously used to identify tool force trends with respect to both tooth geometry parameters and work-piece properties. This review has identified the original findings of previous research. This will allow for further original research to be conducted.

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Section: Tool Forcesmentioning

confidence: 99%

A Review of Wood Machining Literature with a Special Focus on Sawing

Naylor¹,

Hackney²

2013

BioResources

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“…However, with proper treatment, the same wood presents potential for use in the furniture industry. Nevertheless, the use of wood for nobler purposes can be affected due to the recurrent presence of reaction wood (Ratnasingam and Ma 2015), the development of which is associated with the cambium uneven growth, changes in the xylem cell morphology, and chemical and ultrastructural changes of the fiber's secondary wall (Mellerowicz and Sundberg 2008). In hardwood, this wood is called tension wood, once it is formed on the side where the tension forces are requested in the wood (upper side to the stem inclination).…”

Section: Introductionmentioning

confidence: 99%

Does a graft located in the canopy of a rubber tree affect the morphologies of cells in the adjacent wood?

Santos

Latorraca

Toniasso

et al. 2019

BioRes

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The objective of this study was to characterize the wood anatomical structure of a rubber tree clone, under the influence of two different canopy grafts. The following rubber trees were selected in the system of a double-grafted PB 311 + FX 2784 and PB 311 + MDF 180. For each tree, discs of wood were cut from the affected branch immediately below the insertion of clone at right angles to the axis, from which the regions corresponding to tension, in opposite and normal wood, were identified. The anatomical analyses were conducted in accordance with the standards established by the International Association of Wood Anatomy Committee. The Kruskal-Wallis nonparametric test was applied for multiple comparisons among the types of woods and radial positions studied, at 5% of significance. Still, multivariate associations were assessed among the anatomical characteristics of both double-grafted rubber trees, by means of a two-step cluster analysis. Quantitative morphological differences were observed in the wood cells of the double-grafted studied clones. The ray height and the vessels diameter were the most important morphologic characteristics for the distinction. The canopy clone exhibited the ability to modulate the quantitative anatomical characters of the panel clone, depending on the plant’s needs.

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ANATOMICAL CHARACTERIZATION OF TENSION WOOD IN Hevea brasiliensis (Willd. ex A. Juss.) Mull. Arg.

et al. 2016

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Tension wood is an important anatomical structure for its participation in the orientation of the trunk and the architecture of the branches as a function of structural reinforcement. However, its presence in large amounts significantly affects the technological properties of wood, just as in the rubber tree. Nevertheless, there is still demand for information about the origin, distribution and structural features in this species. Thus, this study aims to characterize the cellular structures in tension and opposite wood in Hevea brasiliensis (rubber tree), as well as its radial and longitudinal distribution. Discs at the base and the middle of the commercial logs were collected from three trees in a commercial plantation located in Tabapoã - SP. Tangential diameter of vessels, fiber length (gelatinous and non-gelatinous fibers), microfibril angle and proportionality of cellular elements (vessels, axial parenchyma, ray, gelatinous fibers and non-gelatinous fibers) were measured, and influence of gelatinous fiber presence in vessel diameter was observed. Gelatinous fibers were observed in the two types of wood and in the two trunk heights. Both types of wood were distinguished by gelatinous fiber length and the proportion of axial parenchyma. The tension wood in mid-trunk was the most different, with long gelatinous fibers and less abundant, larger vessel diameter and vessel proportion. Moreover, smaller vessel diameter was observed in the regions with a high proportion of gelatinous fibers, suggesting that the plant invests more support than in liquid transport.

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Optimizing the Cutting of Tension Wood in Rubberwood: An Economic and Quality Perspective

Cited by 5 publications

References 10 publications

A Review of Wood Machining Literature with a Special Focus on Sawing

A Review of Wood Machining Literature with a Special Focus on Sawing

Does a graft located in the canopy of a rubber tree affect the morphologies of cells in the adjacent wood?

ANATOMICAL CHARACTERIZATION OF TENSION WOOD IN Hevea brasiliensis (Willd. ex A. Juss.) Mull. Arg.

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