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ASTM D3044-16
Standard Test Method for Shear Modulus of Wood-Based Structural Panels
NORMA vydaná dňa 1.6.2016
Informácie o norme:
Označenie normy: ASTM D3044-16
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.6.2016
Kód tovaru: NS-642256
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM D3044-16 :
Keywords:
shear modulus, structural panel, wood ,, ICS Number Code 79.060.10 (Plywood)
Doplňujúce informácie
| Significance and Use | ||||||
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4.1 This test method is most useful for determining the moduli of rigidity of orthotropic materials for which moduli of rigidity cannot be computed from elastic moduli and Poisson's ratios. The shear modulus determined by this method appears in the equation governing the bending of a plate. This is the modulus that is needed in discussing the deflection and buckling of plates. Note 2: Test Methods D2718 describes a plate method for
determination of modulus of rigidity of structural
panels.
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| 1. Scope | ||||||
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1.1 This test method covers determination of the shear modulus of wood-based structural panels associated with shear distortion in the plane of the panels. The method is applicable to all types of wood-based structural panels. The grain direction or orientation of the individual plies, laminations, or layers shall be parallel or perpendicular to the edge of the test specimen. If the plies, laminations, or layers are of different material or elastic properties, the method gives the effective shearing modulus. Wood-based structural panels in use include plywood, oriented strand board, and composites of veneer and of wood-based layers. Note 1: This test method is primarily designed for material in
which the grain or orientation of the individual plies,
laminations, or layers is parallel or perpendicular to the edge of
the specimen. It may be used, however, for plywood specimens in
which the grain is at 45° to the specimen edges if a four-ply panel
with all plies of the same thickness is used. The controlling
condition is that the EI (modulus of elasticity × moment of
inertia) values along both diagonals shall be equal.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
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| 2. Referenced Documents | ||||||
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