Heterogeneous materials in compression: Correlations between absorbed, released and acoustic emission energies

Compression tests on concrete and rocks – limestone, marble and granite – specimens have been carried out to investigate on the correlation between absorbed, released and acoustic emission energies. To this aim, the complete load vs. displacement curves have been obtained up to complete failure, evidencing very different post-peak responses – variable from normal softening to catastrophic snap-back – by varying the material, even for the same...