Flatwise Compressive Properties

  

Vinod Kumar
Published : May 31, 2023

Share

 0

Flatwise Compressive Properties

Flatwise compressive properties testing is a critical mechanical test used to determine the strength and stiffness of materials under compressive loading conditions applied parallel to their surface. This type of testing is commonly used for composite materials and sandwich structures that are often subjected to compression loads in their flatwise orientation.

Flatwise compressive properties testing is an essential test for determining the suitability of materials for various applications, including aerospace, automotive, and marine industries. By measuring the strength and stiffness of materials in the flatwise orientation, engineers can make informed decisions about material selection and design optimization for specific applications.

The testing process for flatwise compressive properties involves placing the test sample between two flat parallel platens and applying a compressive load to the sample at a constant rate. The sample’s deformation response to the applied load is measured, including the maximum compressive strength, compressive modulus, and strain to failure.

There are several standard test methods available for performing flatwise compressive properties testing, including ASTM C365 for sandwich constructions and ASTM D6641 for composite laminates. These standards provide guidelines for sample preparation, test setup, and data analysis to ensure accurate and repeatable results.

Sample preparation is a crucial step in flatwise compressive properties testing. The test samples should be prepared in a way that they represent the actual application conditions as closely as possible. For example, sandwich constructions should be prepared with the same core material, adhesive, and facings that will be used in the final application. Similarly, composite laminates should be prepared with the same resin and fiber types as used in the final application.

The test setup for flatwise compressive properties testing should be designed to ensure that the platens are parallel and the load is applied evenly across the sample. The load cell used for measuring the load should be calibrated before the test to ensure accurate measurements.

Video 01: Flatwise Compressive Properties

 0