Fracture Toughness Test, (ISO 15024/ISO15114), is a method used to determine the resistance of a material to crack propagation also known as fracture toughness. The test is used to evaluate the ability of a material to resist crack development under a specific set load condition and to determine the critical crack size that a material can sustain without failure. The ISO 15024/15114 standard describes the procedures, equipment, materials required, test conditions and data analysis for mode-1 and mode-II. The test is commonly used to evaluate the mechanical properties of core materials, adhesives (ISO 25217), and composites in industrial and aerospace applications. It is particularly useful for evaluating the performance of materials in situations where there is a high risk of cracking, such as in high-stress environments.
