PSI - Issue 54

Claudia Barile et al. / Procedia Structural Integrity 54 (2024) 225–232 C. Barile et al. / Structural Integrity Procedia 00 (2023) 000–000

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Fig. 4. Stress-Strain Behaviour of Cenosphere-reinforced Unsaturated Polyester Syntactic Foams

4.1. Mechanical Test Results

The stress-strain behaviours of the syntactic foam test specimens are presented in Figure 4. For the sake of brevity, longitudinal strain behaviour is discussed here. All three specimens show linear stress-strain behaviour with apparently no yielding, which is a characteristic feature of thermoset polymer systems.

Fig. 5. SEM Micrographs of the Fractured Surface of Cenosphere / Unsaturated Polyester Syntactic Foams