ASTM-D8388/D8388M 2022

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D8388/D8388M-22 Standard Practice for Flexural Residual Strength Testing of Damaged Sandwich Constructions

Published By	Publication Date	Number of Pages
ASTM	2022	7

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Categories: 91.080.99 - Other structures, ASTM

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Description

ASTM D8388/D8388M-22

Active Standard: Standard Practice for Flexural Residual Strength Testing of Damaged Sandwich Constructions

ASTM D8388/D8388M

Scope

1.1 This practice provides instructions for modifying the long beam flexure test method to determine the tensile or compressive residual strength properties of sandwich constructions that have been subjected to quasi-static indentation or drop-weight impact per Practice D7766/D7766M. The tensile or compressive strength result is determined by which facesheet contains the damage, either the loaded-span or support-span facesheet, based on how the specimen is positioned in the fixture.

1.2 This practice supplements Test Method D7249/D7249M with provisions for testing damaged sandwich specimens. Several important test specimen parameters (for example, facesheet thickness, core thickness and core density) are not mandated by this practice; however, repeatable results require that these parameters be specified and reported.

1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

1.3.1 Within the text, the inch-pound units are shown in brackets.

1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords

core; damage resistance; damage tolerance; delamination; dent; disbond; drop-weight impact; facesheet; impact testing; quasi-static indentation; sandwich; sandwich construction;

ICS Code

ICS Number Code 91.080.99 (Other structures)

DOI: 10.1520/D8388_D8388M-22

Additional information

Standard Title	D8388/D8388M-22 Standard Practice for Flexural Residual Strength Testing of Damaged Sandwich Constructions
Published Code	ASTM
Publication Date	2022
Pages Count	7
ICS Codes	91.080.99 - Other structures