Standard Test Method for Core Shear Properties of Sandwich Constructions by Beam Flexure
C393 - 16
Organization:
ASTM - ASTM International
Year: 2016
Subject: <keyword >A micrometer with a 4 to 7 mm [0.16 to 0.28 in.] nominal diameter ball-interface or a flat anvil interface shall be used to measure the specimen thickness. A ball interface is recommended for thickness measurements when facings are bonded to the core and at least one surface is irregular (e.g. the bag-side of a thin facing laminate that is neither smooth nor flat). A micrometer or caliper with a flat anvil interface is recommended for thickness measurements when facings are bonded to the core and both surfaces are smooth (e.g. tooled surfaces). A micrometer or caliper with a flat anvil interface shall be used for measuring length and width as well as the specimen thickness when no facings are present. The use of alternative measurement devices is permitted if specified (or agreed to) by the test requestor and reported by the testing laboratory. The accuracy of the instruments shall be suitable for reading to within 1
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Standard Test Method for Core Shear Properties of Sandwich Constructions by Beam Flexure
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contributor author | ASTM - ASTM International | |
date accessioned | 2017-10-28T13:12:30Z | |
date available | 2017-10-28T13:12:30Z | |
date issued | 2016 | |
identifier other | C393C393M.pdf | |
identifier uri | http://yse.yabesh.ir/std/handle/yse/243085 | |
description | C393 - 16 Standard Test Method for Core Shear Properties of Sandwich Constructions by Beam Flexure , | |
language | English | |
title | Standard Test Method for Core Shear Properties of Sandwich Constructions by Beam Flexure | en |
title | C393 - 16 | num |
type | standard | |
status | Active Standard | |
tree | ASTM - ASTM International:;2016 | |
contenttype | fulltext | |
subject keywords | ||
subject keywords | %of the sample dimensions. For typical specimen geometries an instrument with an accuracy of ± | |
subject keywords | ||
subject keywords | 0.025 mm [± | |
subject keywords | 0.001 in.] is adequate for the length width and thickness measurements. | |
subject keywords | bending stress | |
subject keywords | core modulus | |
subject keywords | core stress | |
subject keywords | facing stress | |
subject keywords | sandwich construction | |
subject keywords | sandwich deflection | |
subject keywords | shear stress | |
scope | This test method covers determination of the core shear properties of flat sandwich constructions subjected to flexure in such a manner that the applied moments produce curvature of the sandwich facing planes. 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 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. 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. |