ASTM C623 Test for Elastic Properties of Glass and Glass-Ceramic by Resonance

ASTM C623 is used to determine elastic properties (Young's Modulus, Shear Modulus, and Poisson's Ratio) for Glass and Glass-Ceramics by Resonance. The resonance frequencies of test bars of suitable geometry is measured by exciting them at continuously variable frequencies.

Talk to an Expert

TRUSTED BY

Precision-driven testing for dimensional accuracy and compliance

Overview
Scope, Applications, and Benefits
Test Process
Specifications
Instrumentation
Results and Deliverables

Overview

ASTM C623 determines the elastic properties of glass and glass-ceramic materials using the resonance method. The test measures natural vibration frequencies to calculate elastic modulus, shear modulus, and Poisson’s ratio.

This method is widely used in glass, optics, and advanced materials industries. It provides non-destructive evaluation of mechanical stiffness and helps ensure material performance in structural and functional applications.

Scope, Applications, and Benefits

Scope

ASTM C623 evaluates the elastic behavior of glass materials by exciting specimens into vibration and measuring resonance frequencies. The test provides accurate mechanical property data without damaging the sample.

The test evaluates:

Elastic modulus (Young’s modulus)
Shear modulus of materials
Poisson’s ratio
Material stiffness and rigidity
Dynamic mechanical behavior

Applications

Glass and glass-ceramic products
Optical and precision components
Electronic and display glass
Structural glass applications
Research and material development
Quality control in glass manufacturing

Benefits

Non-destructive testing method
Provides accurate elastic property data
Supports material design and engineering
Helps predict mechanical performance
Enables comparison of material stiffness

Test Process

Sample Preparation

Specimens are prepared with precise geometry and smooth surfaces.

Excitation Setup

Samples are excited mechanically or acoustically to induce vibration.

Resonance Measurement

Natural frequencies are measured using sensors and detection systems.

Data Recording & Evaluation

Elastic properties are calculated based on resonance frequency data.

Technical Specifications

Parameter	Details
Applicable Materials	Glass and glass-ceramic materials
Frequency Range	~1 kHz to 100 kHz
Specimen Shape	Rectangular or cylindrical bars
Measurement Accuracy	±1% to ±3%
Temperature Range	~20°C to 300°C
Measured Outputs	Elastic modulus, shear modulus, Poisson’s ratio

Instrumentation Used for Testing

Resonance testing system
Vibration excitation device
Frequency analyzer
Sensors (accelerometers or microphones)
Sample support fixtures
Data acquisition system

Results and Deliverables

Elastic modulus (Young’s modulus) values
Shear modulus and Poisson’s ratio
Resonance frequency data
Material stiffness evaluation
Test condition summary
ASTM compliance report

Partnering with Infinita Lab for Optimal Results

Infinita Lab addresses the most frustrating pain points in the ASTM C623 testing process: complexity, coordination, and confidentiality. Our platform is built for secure, simplified support, allowing engineering and R&D teams to focus on what matters most: innovation. From kickoff to final report, we orchestrate every detail—fast, seamlessly, and behind the scenes.

Looking for a trusted partner to achieve your research goals? Schedule a meeting with us, send us a request, or call us at (888) 878-3090 to learn more about our services and how we can support you. Request a Quote

Frequently Asked Questions

ASTM C623 determines elastic properties of glass and glass-ceramics using resonance techniques. It measures natural vibration frequencies of specimens. This helps evaluate stiffness and mechanical behavior of materials.

Key parameters include specimen dimensions, resonance frequency, vibration mode, and material density. Proper support and excitation conditions are required. These factors influence accuracy of elastic property measurements.

The test calculates elastic modulus, shear modulus, and Poisson’s ratio. These values are derived from resonance frequencies. They indicate stiffness and structural performance of the material.

ASTM C623 is used for glass and glass-ceramic materials. This includes optical glass, structural glass, and advanced ceramic-glass composites. These materials require precise elastic characterization.

ASTM C623 requires precise specimen preparation and controlled conditions. Results may be affected by geometry, defects, or damping effects. It may not fully represent behavior under complex loading conditions.