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ASTM D 7766/D7766M : 2016 : REDLINE

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Standard Practice for Damage Resistance Testing of Sandwich Constructions

Available format(s)

PDF

Superseded date

13-06-2023

Language(s)

English

Published date

03-06-2016

€67.30
Excluding VAT

CONTAINED IN VOL. 15.03, 2016 Gives instructions for modifying laminate quasi-static indentation and drop-weight impact test methods to determine damage resistance properties of sandwich constructions.

Committee
D 30
DocumentType
Redline
Pages
9
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy

1.1This practice provides instructions for modifying laminate quasi-static indentation and drop-weight impact test methods to determine damage resistance properties of sandwich constructions. 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, truss cores and fiber-reinforced cores).

1.2This practice supplements Test Methods D6264/D6264M (for quasi-static indentation testing) and D7136/D7136M (for drop-weight impact testing) with provisions for testing sandwich specimens. Several important test specimen parameters (for example, facing thickness, core thickness and core density) are not mandated by this practice; however, repeatable results require that these parameters be specified and reported.

1.3Three test procedures are provided. Procedures A and B correspond to D6264/D6264M test procedures for rigidlybacked and edge-supported test conditions, respectively. Procedure C corresponds to D7136/D7136M test procedures. All three procedures are suitable for imparting damage to a sandwich specimen in preparation for subsequent damage tolerance testing.

1.4In general, Procedure A is considered to be the most suitable procedure for comparative damage resistance assessments, due to reduced influence of flexural stiffness and support fixture characteristics upon damage formation. However, the selection of a test procedure and associated support conditions should be done in consideration of the intended structural application, and as such Procedures B and C may be more appropriate for comparative purposes for some applications.

1.5The 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 exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.5.1Within the text the inch-pound units are shown in brackets.

1.6This 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.

ASTM D 7136/D7136M : 2015 : REDLINE Standard Test Method for Measuring the Damage Resistance of a Fiber-Reinforced Polymer Matrix Composite to a Drop-Weight Impact Event
ASTM D 6264/D6264M : 2017 : REDLINE Standard Test Method for Measuring the Damage Resistance of a Fiber-Reinforced Polymer-Matrix Composite to a Concentrated Quasi-Static Indentation Force

ASTM D 7136/D7136M : 2015 : REDLINE Standard Test Method for Measuring the Damage Resistance of a Fiber-Reinforced Polymer Matrix Composite to a Drop-Weight Impact Event
ASTM E 177 : 2014 : REDLINE Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
ASTM D 5229/D5229M : 2014-06 TEST METHOD FOR MOISTURE ABSORPTION PROPERTIES AND EQUILIBRIUM CONDITIONING OF POLYMER MATRIX COMPOSITE MATERIALS
MIL-HDBK-787 Base Document:1988 NONDESTRUCTIVE TESTING METHODS OF COMPOSITE MATERIALS - ULTRASOUND
ASTM D 792 : 2013 : REDLINE Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
MIL-HDBK-732 Revision A:1991 NONDESTRUCTIVE TESTING METHODS OF COMPOSITE MATERIALS - ACOUSTIC EMISSION
MIL-HDBK-731 Base Document:1984 NONDESTRUCTIVE TESTING METHODS OF COMPOSITE MATERIALS - THERMOGRAPHY
MIL-HDBK-17-3 Revision F:2002 COMPOSITE MATERIALS HANDBOOK - VOLUME 3: POLYMER MATRIX COMPOSITES MATERIALS USAGE, DESIGN, AND ANALYSIS
ASTM D 3171 : 2015 : REDLINE Standard Test Methods for Constituent Content of Composite Materials
ASTM D 6264/D6264M : 2017 : REDLINE Standard Test Method for Measuring the Damage Resistance of a Fiber-Reinforced Polymer-Matrix Composite to a Concentrated Quasi-Static Indentation Force
MIL-HDBK-728-1 Base Document:1985 NONDESTRUCTIVE TESTING

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