ASTM C393 Core Shear Properties of Sandwich Constructions by Beam Flexure

ASTM C393 is a standard test method that evaluates the core shear properties of sandwich constructions. This test helps in determining the strength and performance of the core material in a sandwich panel, which is crucial for structural applications. The ASTM C393 method helps in material selection, design optimization, and quality control of sandwich structures. Materials with continuous bonding surfaces (such as balsa wood and foams) and those with discontinuous bonding surfaces (such as honeycomb) can be tested using this method. Results can be given in either SI units or inch-pound units per requirement.


Introduction to ASTM C393

ASTM C393 establishes the standard test method for evaluating the core shear properties of sandwich constructions. The sandwich flexural stiffness, the core shear strength and shear modulus, or the facings compressive and tensile strengths of flat sandwich constructions may be determined by flexure tests. The core material in a sandwich panel plays a significant role in bearing and distributing loads, providing stiffness, and enhancing the panel’s overall structural integrity. The ASTM C393 test method allows for the characterization of the core material’s shear strength, shear modulus, and failure modes under applied loading conditions. ASTM C393 test obtainsthe core shear strength or core-to-facing shear strength and the stiffness of the sandwich beam. It also obtains load-deflection data for use in calculating sandwich beam flexural and shear stiffness. 

By assessing the core shear properties by ASTM C393 test method, manufacturers, engineers, and researchers ensure the reliability and integrity of sandwich structures in various industries such as aerospace, marine, and construction. MaTestLab has the best network of testing labs in the USA to carry out ASTM C393 test for our clients.

ASTM C393 Test Method

The ASTM C393 proceeds as follows:

Loading ConfigurationThe prepared sandwich panel specimens are subjected to a compressive shear load applied between the face sheets in a controlled manner. The loading configuration varies depending on the specific test setup and equipment used.
Shear Strength and ModulusThe applied load is increased until the specimen experiences failure. The shear strength, defined as the maximum load before failure, and shear modulus, representing the material’s resistance to deformation, are determined from the test data. The test provides valuable information about the failure modes observed during core shear testing, such as debonding, core crushing, or delamination.

ASTM C393 Specimens

Specimen detailsASTM C393 specimens are prepared with a specific area dedicated to measuring the core shear properties defined by a specific width and length within the sandwich panel.
Specimen dimensionsThe sandwich panel specimens have specified dimensions, thicknesses, and material requirements outlined in the standard.
Specimen preparationThe face sheets and core material are carefully bonded together with appropriate adhesives.

ASTM C393 Results

The results of ASTM C393 include the measured shear strength, shear modulus, and failure modes of the tested sandwich panel specimens. These results indicate the core material’s ability to withstand shear forces and provide insights into its overall structural performance.

Tests Related to ASTM C393

ASTM C273 (Shear Properties of Sandwich Core Materials) and ASTM C364 (Testing Flexural Properties of Continuous Fiber-Reinforced Advanced Ceramics) are the related standards. 


Where can I get the astm c393 tested?

You can share your astm c393 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm c393 test to various testing techniques.

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Please contact us for a detailed quote for your astm c393 testing needs. Cost incurred to carry out different astm c393 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.

How many samples are required for astm c393?

The required number of samples or specimens should comply with the procedure given in the astm c393 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.

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MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.

How many days will it take to complete the astm c393 test?

The turnaround time for astm c393 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.

Where can I get the astm c393 tested?

You can share your astm c393 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm c393 test to various testing techniques.

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