The present work presents some first results of an experimental study in which samples of a natural-occurring stone, called "leccese", were subjected to fatigue through low-cycle tests in the presence of high compressive stresses. The specimens' behaviour remains typical up to the last cycle, during which brittle failure occurs, with gradual accumulation of permanent strains. Other tests by pure tension or compression performed up to failure on samples previously subjected to a interrupted low-cycle fatigue test, confirmed that during such fatigue cycles the damage process is accompanied by meaningful variations in some significant mechanical parameters, amongst which, the Young elastic modulus and tensile strength are particularly telling.
Tensile and low-cycle compressive tests on a natural structural stone
BECONCINI, MARIA LUISA;BENNATI, STEFANO;SALVATORE, WALTER
2001-01-01
Abstract
The present work presents some first results of an experimental study in which samples of a natural-occurring stone, called "leccese", were subjected to fatigue through low-cycle tests in the presence of high compressive stresses. The specimens' behaviour remains typical up to the last cycle, during which brittle failure occurs, with gradual accumulation of permanent strains. Other tests by pure tension or compression performed up to failure on samples previously subjected to a interrupted low-cycle fatigue test, confirmed that during such fatigue cycles the damage process is accompanied by meaningful variations in some significant mechanical parameters, amongst which, the Young elastic modulus and tensile strength are particularly telling.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
