SANDWICH PANEL FLATWISE TENSILE TEST
2" BLOCKS  (ASTM C 297)

Model No. CU-FT (low carbon steel)
Model No. WTF-FT (17-4PH stainless)

Fixture with a 2" Cube Bonding Block Shown Mounted in the Upper Holder

A through-the-thickness (flatwise) tensile test of a sandwich panel is performed. The strength of the core, a face sheet, or the bond between the core and a face sheet, whichever is weaker, is determined.

The fixture consists of upper and lower bonding block holders, each with pivoted ends. The end fittings are standard 1.25" diameter male studs with 0.50" diameter cross-pin holes, for attachment to the testing machine. Optional mating adapters, if required, can be provided at nominal cost.

The cube-shaped bonding blocks also pivot in the holders, about slip-fit mounting pins, thus providing the desired second degree of alignment rotation. This unique Wyoming design permits the use of all four faces of each bonding block, rather than just two as in other configurations, thus effectively doubling the useful life of each bonding block.

This standard Wyoming test fixture utilizes 2" cube bonding blocks, as recommended by ASTM Standard C 297. However, the fixture will also accommodate smaller size blocks, which can be supplied upon request. Cylindrical blocks up to 2" in diameter can also be used.

Since the ASTM standard recommends that not less than five specimens be used for acceptance testing, five pairs of 2" steel bonding blocks are normally supplied with each specimen. Any number of additional blocks, and of alternate materials if desired, e.g., aluminum, can be supplied.

An alternate fixture design, utilizing 1" cube bonding blocks, is also available from Wyoming Test Fixtures, Inc., as Model CU-FP or WTF-FP (see Section F-2 of this catalog). This fixture also conforms to the same ASTM Standard C 297.

Source of Additional Information:

1)    1)   ASTM Standard C 297-94 (Reapproved 1999), "Tensile Strength of Flat Sandwich Constructions in Flatwise Plane," American Society for Testing and Materials, West Conshohocken, Pennsylvania (first issued in 1952).

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Copyright 2005 - Wyoming Test Fixtures, Inc.

Wyoming Test Fixtures Inc. 2960 E. Millcreek Canyon Rd.
Salt Lake City, UT  84109
wyomingtestfixtures.com  Phone: 801-484-5055  Fax: 801-484-6008
E-mail: wtf@wyomingtestfixtures.com