Products » Testing Accessories » Wood Testing Fixtures

Characterization of wood materials requires a range of tests under different loading conditions, such as tensile, compression, shear, and flexure. Instron provides a range of high-performance wood testing fixtures that conform to the requirements of the appropriate ASTM, ISO, EN, JIS, and other testing standards.

Internal Bond Test Fixture

Catalog Number 2820-061

The internal bond test fixture is designed for testing the strength properties of wood or adhesive bonds in wood by tensile loading. The fixture consists of a self-aligning upper grip and a rotatable lower grip. Tensile loading is applied to the specimen via blocks bonded to the specimen itself. Simple clevis pin interfaces are used which allow quick and easy fitting and removal of the grips.

Overview
Force Capacity	10 kN
Recommended For	Chipboard, fiberboard, etc.
Type of Loading	Static
Specimen Shapes	Rectangular
Compliance to Standards	ASTM D1037-99, BS 5669-1979, JIS A5905-1994, JIS A5906-1983, JIS A5908-1994

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Wood Flexure Fixtures

The 2820-04x Series flexure testing fixtures are available in multiple span sizes, force capacities, and are compatible with three and four-point anvil sets to meet a wide range of testing standards. These fixtures are ideal for testing MDF and fiberboard as well as natural timber. Specimens are supported by two anvils attached to a base beam. Force is applied either at the center (three-point bend) or at two points between the supporting anvils (four-point bend). Optional rolling and articulating anvil sets can support testing of warped specimens. Deflection of the specimen can be measured using the optional deflection measurement yoke (catalog no. 2820-057) and a suitable extensometer.

Lower Beams
Constructed of a high strength extruded allow, each lower beam includes a graduated scale for ease of adjusting the anvil span setting and meets the requirements of JIS A5905, JIS A5906, JIS A5908, JAS 112, JAS 601, BS 373, BS 5669, EN 310, EN 789, ISO 3133, ASTM D1037, and ASTM D143.

Force Capacity	Maximum Span	Catalog No.

10 kN	800 mm (31.5 in)	2820-040
50 kN	800 mm (31.5 in)	2820-041
50 kN	1200 mm (47.2 in)	2820-042

Four-Point Upper Beams
Upper beams are required for four-point flexure testing and each includes a graduated scale for ease of adjusting the anvil span setting. Capable of meeting the following testing standard requirements with the appropriate anvil sets: ISO 3349, JAS 112, JAS 601, EN 789.

Force Capacity	Maximum Span	Catalog No.

10 kN	300 mm (11.8 in)	2820-043
50 kN	610 mm (24 in)	2820-044

Anvil Sets

Description	Testing Standards	Catalog No.

3-Point Rigid Anvil Set Upper and Lower: 20 mm dia.,100 mm wide	JIS A 5905, JIS A 5906, JIS A 5908, BS 5669	2820-045
3-Point Rigid Anvil Set Upper: 30 mm dia., 100 mm wide Lower: 15 mm dia., 100 mm wide	BS EN 310	2820-046
3-Point Rigid Anvil Set Upper and Lower: 76 mm dia., 100 mm wide	ASTM D 1037 for specimens with thickness from 4 – 25 mm	2820-047
3-Point Rigid Anvil Set Upper and Lower: 60 mm dia., 100 mm wide	ASTM D 1037 for specimens with thickness from 4 – 25 mm	2820-048
4-Point Rigid Anvil Set Upper: 60 mm dia., 100 mm wide Requires 2820-048 and Four-Point Upper Beam	ISO 3349 (4-Point)	2820-049
3-Point Anvil Set Upper (Rigid): 30 mm dia., 100 mm wide Lower (Rolling and Articulating): 30 mm dia., 70 mm wide	JAS 112	2820-052
4-Point Anvil Set Upper (Rolling and Articulating): 30 mm dia., 70 mm wide Requires 2820-052 and Four-Point Upper Beam	JAS 112 (4-Point)	2820-053
3-Point Anvil Set Upper (Rigid): 30 mm dia., 300 mm wide. Lower (Rolling and Articulating): 30 mm dia. 300 mm wide	JAS 601, EN 789	2820-054

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Shear Fixture for Wood

Catalog Number 2820-060

This fixture is designed for testing the shear strength properties of wood or adhesive bonds in wood by compression loading. The fixture consists of a high-strength steel body with a sliding, self-aligning anvil which is used to apply compressive loading to the specimen in shear. The shear line can be set at 0.0 mm, 2.0 mm or 3.0 mm by using shims. The shims are clearly engraved with the applicable standard and are easy and quick to change.

Overview
Force Capacity	50 kN
Type of Loading	Static
Specimen Shapes	Rectangular
Testing Standards	ASTM D143-94, ASTM D905-98, ISO 6238:2001, JIS K 6802-1973, JIS Z 2117-1977, BS 373:1957, JAS 601-1974

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Adhesive Bond Tension Test Fixture

Catalog No. S1-11861

Used to test adhesive bonds perpendicular to the surface.


Force Capacity	10 kN
Testing Standards	ASTM D897-01