ISO 15024:2023
Fibre-reinforced plastic composites — Determination of mode I interlaminar fracture toughness, GIC, for unidirectionally reinforced materials
This document specifies a method for the determination of mode I interlaminar fracture toughness (critical energy release rate), GIC, of unidirectional fibre-reinforced plastic composites using a double cantilever beam (DCB) specimen.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1 Test machine
5.1.1 General
5.1.2 Speed of testing
5.1.3 Fixture
5.1.4 Load and displacement measurements
5.1.5 Recorder
5.2 Load blocks or piano hinges
5.3 Measuring apparatus
5.4 Travelling microscope (optional)
5.5 Non-adhesive insert film
5.6 Ancillary equipment
6 Test specimen
6.1 Test plate preparation
6.2 Specimen preparation
6.2.1 Preferred specimens
6.2.2 Alternative specimens
6.3 Checking and measurement of the test specimens
6.4 Attachment of loading points
6.5 Measurement of delamination length
7 Number of specimens
8 Conditioning
9 Test procedure
9.1 Test set-up
9.2 Initial loading
9.3 Re-loading
10 Calculation of GIC
10.1 Interpretation of test results
10.2 Data reduction
10.2.1 General
10.2.2 Method A: Corrected beam theory (CBT)
10.2.3 Method B: Modified compliance calibration (MCC)
10.3 Data sheets, data plots and statistical calculation
11 Precision
12 Test report
Annex A (normative) Preparation and bonding of the load blocks or piano hinges
Annex B (informative) Recommendations for testing
Annex C (informative) Recommended test result sheet
Annex D (informative) DCB test with flat insert hinge
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1 Test machine
5.1.1 General
5.1.2 Speed of testing
5.1.3 Fixture
5.1.4 Load and displacement measurements
5.1.5 Recorder
5.2 Load blocks or piano hinges
5.3 Measuring apparatus
5.4 Travelling microscope (optional)
5.5 Non-adhesive insert film
5.6 Ancillary equipment
6 Test specimen
6.1 Test plate preparation
6.2 Specimen preparation
6.2.1 Preferred specimens
6.2.2 Alternative specimens
6.3 Checking and measurement of the test specimens
6.4 Attachment of loading points
6.5 Measurement of delamination length
7 Number of specimens
8 Conditioning
9 Test procedure
9.1 Test set-up
9.2 Initial loading
9.3 Re-loading
10 Calculation of GIC
10.1 Interpretation of test results
10.2 Data reduction
10.2.1 General
10.2.2 Method A: Corrected beam theory (CBT)
10.2.3 Method B: Modified compliance calibration (MCC)
10.3 Data sheets, data plots and statistical calculation
11 Precision
12 Test report
Annex A (normative) Preparation and bonding of the load blocks or piano hinges
Annex B (informative) Recommendations for testing
Annex C (informative) Recommended test result sheet
Annex D (informative) DCB test with flat insert hinge
Bibliography