ASTM D8067/D8067M Standard Test Method for In-Plane Shear Properties of Sandwich Panels Using a Picture Frame Fixture
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- ASTM D7202 Standard Test Method for Determination of Beryllium in the Workplace by Extraction and Optical Fluorescence Detection
- ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
- ASTM E855 Standard Test Methods for Bend Testing of Metallic Flat Materials for Spring Applications Involving Static Loading
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- ASTM E4 Standard Practices for Force Verification of Testing Machines
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ASTM International
Standard Test Method for In-Plane Shear Properties of Sandwich Panels Using a Picture Frame Fixture
N D8067/D8067M
Annotation
This test method covers determination of apparent in-plane shear strength and stiffness properties of flat sandwich constructions with composite face sheets. Permissible core material forms include those with continuous bonding surfaces (such as balsa wood and foams) as well as those with discontinuous bonding surfaces (such as honeycomb).
The square test specimen with corner notches is mechanically fastened to a pinned metal frame along each edge. The frame is loaded in uni-axial tension which produces tensile forces in the frame elements at a 45° angle to the applied tension. These tensile forces act along the edges of the specimen to cause a state of predominately shear stress to transfer the applied force through the specimen. Procedure A uses a specimen without edge doublers; Procedure B uses a specimen with four discrete edge doublers; Procedure C uses a specimen with a continuous edge doubler.
The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
Within the text the inch-pound units are shown in brackets.
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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