ASTM-C365-1
ASTM C365 Standard Test Fixture 2
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ASTM C365 Standard Test Fixture 4

ASTM C365 – Standard Test Method for Flatwise Compressive Properties of Sandwich Cores

ASTM C365 –  Sandwich Core Compression Testing

ASTM C365 – This test method covers the determination of compressive strength and modulus of sandwich cores.

These properties are usually determined for design purposes in a direction normal to the plane of facings as the core would be placed in a structural

sandwich construction.

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Description

ASTM C365 – Standard Test Method for Flatwise Compressive Properties of Sandwich Cores

 

ASTM C365 –  Sandwich Core Compression Testing

ASTM C365 – This test method covers the determination of compressive strength and modulus of sandwich cores.

These properties are usually determined for design purposes in a direction normal to the plane of facings as the core would be placed in a structural

sandwich construction.

The test procedures pertain to compression in this direction in particular, but also can be applied with possible minor variations to determining compressive

properties in other directions.

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).

*** This test method does not cover the determination of compressive core crush properties. Reference Test Method D7336/D7336M

 for determination of static energy absorption properties of honeycomb sandwich core materials.


Significance and Use

Flatwise compressive strength and modulus are fundamental mechanical properties of sandwich cores that are used in designing sandwich panels.

Deformation data can be obtained, and from a complete force versus deformation curve, it is possible to compute the compressive stress at any applied force

(such as compressive stress at proportional limit force or compressive strength at the maximum force) and to compute the effective modulus of the core.

*** This test method provides a standard method of obtaining the flatwise compressive strength and modulus for sandwich core structural

design properties, material specifications,  research and development applications, and quality assurance.

*** Before conducting ASTM C365 , it is important to read the entire specification. Standards can be obtained from appropriate standard authorities.

 

***PARSROS  offers several types of grips and fixtures which will enable you to perform a variety of tests  that are

accurate and repeatable.

 


Referenced Documents

ASTM Standards

ASTM C271/C271M Test Method for Density of Sandwich Core Materials

ASTM D883 Terminology Relating to Plastics

ASTM D3878 Terminology for Composite Materials

ASTM D5229/D5229M Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Matrix Composite Materials

ASTM D7336/D7336M Test Method for Static Energy Absorption Properties of Honeycomb Sandwich Core Materials

ASTM E4 Practices for Force Verification of Testing Machines

ASTM E6 Terminology Relating to Methods of Mechanical Testing

ASTM E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or Process

ASTM E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods

ASTM E456 Terminology Relating to Quality and Statistics

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