GB/T 1464-2024
Test method for density of sandwich structures or cores (English Version)

Standard No.

GB/T 1464-2024

Language

Chinese, Available in English version

Release Date

2024

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China  CN  /  GB

Latest

GB/T 1464-2024

Replace

GB/T 1464-2005

Introduction

GB/T 1464-2024 Standard Overview

GB/T 1464-2024 "Test Method for Density of Sandwich Structure or Core" is an important standard for the field of composite materials, which mainly regulates the measurement method of sandwich structure and core density. This standard replaces the old version GB/T 1464-2005 and comprehensively revises the test principle, equipment requirements, sample preparation, etc.

Background of standard update

Content of old version	Changes in new version	Change instructions
Delete terms such as density and sandwich structure density	Add definition of geometric method	To meet the testing needs of new materials
Oven accuracy ±3℃	Increased to ±2℃	Improve measurement accuracy

Test equipment and accuracy requirements

Balance: Accuracy 0.01g, to ensure accurate weighing; Vernier caliper: Precision 0.01mm, used to accurately measure the sample size.

Detailed explanation of test steps

1. Sample preparation: According to GB/T 1446, ensure that the shape is regular and the surface is parallel.
2. State conditioning: Place under standard laboratory conditions (23±2℃, 50±10% RH) for at least 24 hours or use a desiccator.
3. Dimension measurement: Measure the dimensions of the sample at three locations respectively, take the average value, accurate to 0.01mm.

Result calculation and processing

Density calculation formula:

\[ \rho = \frac{m}{S \times h} \times 10^{6} \]

- \(\rho\): density (kg/m³) - \(m\): sample mass (g) - \(S\): cross-sectional area (mm²) - \(h\): thickness (mm)

Implementation suggestions

To ensure the accuracy and consistency of the test results, it is recommended that:

• Strictly follow the requirements of the standard on equipment accuracy and environmental conditions.
• Number the samples evenly and record all measurement data for review.
• Detail the test method and result processing method in the report to ensure traceability.

GB/T 1464-2024 history

• 2024 GB/T 1464-2024 Test method for density of sandwich structures or cores
• 2005 GB/T 1464-2005 Test method for density of sandwich construction or cores
• 1987 GB/T 1464-1987 Test method for density of nonmetal sandwich constructions or cores
• 0000 GB 1464-1978

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