radial shrinkage

The shrinkage of wood across the growth rings during drying; the loss in dimension along the radius of a log.

References in periodicals archive ?

urophylla (n = 54) Property AD+MFA (b) KS 0.17 TS 0.28 T/R 0.17 CS 0.53 (**) MOE 0.67 (**) MOR 0.61 (**) (a) n = number of samples from 18 trees (three trees x three clones in a hybrid); AD = air-dry density; MFA = microfibril angle of [S.sub.2] layer in wood fibers; RS and TS = radial and tangential shrinkages per 1 percent change in moisture content, respectively; T/R = ratio of tangential shrinkage to radial shrinkage; CS = compressive strength parallel to grain; MOE = modulus of elasticity; MOR = modulus of rupture; (*), (**) = significantly different at 5 and 1 percent levels, respectively.

Growth Characteristics and Wood Properties of Two Interspecific Eucalyptus Hybrids Developed in Indonesia

The study objective is to identify the differences in morphological characteristics (percentages of sapwood, heartwood, bark, and pith and pit eccentricity), physical properties (green density; specific gravity; volumetric, tangential and radial shrinkage; and moisture content) and mechanical properties (module of elasticity and modulus of rupture in bending, parallel compression, Janka harness, parallel and perpendicular tension and shear stress) of wood from 7-year-old trees in two populations with the same provenance of Cedrela odorata growing in an agroforestry system with Theobroma cacao (cacao).

Properties of wood from 7-year-old Cedrela odorata trees of two different populations growing in agroforestry systems with Theobroma cacao/Propiedades de la madera de arboles de siete anos de edad de dos poblaciones de Cedrela odorata plantadas en un sistema agroforestal

It is worth noting that the radial shrinkage of Mo-Cu composites is always higher than the axial shrinkage.

Sintering Behavior and Properties of Mo-Cu Composites

It also reduces radial shrinkage, enabling cycle-time reductions in extrusion blow molding and injection molding of some parts.

Polyolefin additives: pushing the limits in films & molded parts: advances in nucleators, compatibilizers, fillers, stabilizers, and more elevate performance of polyolefins

Notice that equations of strains and stresses for restraint hydrate process of the ring are also able to be used in the case of uniform radial shrinkage by reforming the constitutive equation for uniform shrinkage:

Cracking tendency prediction of high-performance cementitious materials

The molar ratios between the precursors (MR/FA, MR/Cat, W/MR or H/FA, H/Cat, methanol/H) were optimized, taking into account the final density, the preparation time and the radial shrinkage during drying.

Low-density organic aerogels from oil shale by-product 5-methylresorcinol

Before and after the drying, the bulk gels were measured and their radial shrinkage and density were calculated.

Preparation of nanostructured carbon materials/Nanostruktuurse susinikaerogeeli valmistamine

Percent radial shrinkage (given in negative values) was calculated for 10 min time steps by relating the total radial shrinkage (digital gauge, accuracy 1 [micro]m) to the total coupling pressure decrease.

Acoustic emissions related to the dehydration stress behavior of green Norway spruce wood

Even quarter-sawn boards (radial shrinkage) move significantly across the grain (Figure 8).

Wood is good ... but strange

wood expands and contracts with changing humidity levels, while mortar does not." White cedar has the lowest coefficient of expansion and contraction ("radial shrinkage"), at 2.2%, of any of the common woods.

Rob Roy responds to the ongoing "cordwood discussion"

Since it's the radial shrinkage that is going across the width of the board, quarter-sawn boards also shrink less in width than flat-sawn boards.

Why wood moves through all four seasons

Nevertheless, in the nodal area, the bent vascular bundle can enhance the resistance to radial shrinkage. Razak et al.

Analysis of Bambusa rigida Bamboo Culms between Internodes and Nodes: Anatomical Characteristics and Physical--Mechanical Properties

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