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Featured researches published by C. Clienti.


Key Engineering Materials | 2010

Determination of Fatigue Limit by Mono-Axial Tensile Specimens Using Thermal Analysis

Antonino Risitano; C. Clienti; Giacomo Risitano

In this work is indicated how it could be possible to evaluate the limit stress of the thermo-elastic phase of deformation by thermo-analysing the surface of the specimen during a static traction test. Adding the temperature curve measured on a small area of the surface (the hottest) to the classic stress-strain curve, it is possible to evaluate a limit temperature T0 coincident with the beginning of the non linear trend of the curve. The corresponding stress value is coincident with the fatigue limit of the analyzed component. As an example, the results of traction tests performed on two notched specimens, where the change of linearity in the temperature curve during static traction test was evident, are reported.


Key Engineering Materials | 2011

Experimental Study to Verify the Fatigue Limit Found by Thermal Analysis of Specimen Surface in Mono Axial Traction Test

Giacomo Risitano; C. Clienti

Following the first experimental results concerning the possibility to estimate the fatigue limit by semi-static tensile traction test, the authors are continuing the experimental thermo-analysis of the curve zone between the origin and the yield stress; that is rich of indication about the fatigue failure process. The tests carried out on the AISI 304 steel by thermal analysis, confirmed the good approximation between the values of the fatigue limit estimated by fatigue test and by the quasi-static test. The results shoed the importance of the thermo-analysis of the part of the stress-strain curve (distant from the yield point) where only in macroscopic terms the behavior is perfectly elastic.


Fracture and Structural Integrity | 2010

Proposta di utilizzo di metodologie termografiche per il controllo di qualità di componenti meccanici

C. Clienti; Guido La Rosa; Antonino Risitano; Roberto D’Andrea

In base all’esperienza maturata in anni di sperimentazione sull’analisi delle caratteristiche meccaniche dei materiali mediante indagine termografica, nel presente lavoro e proposta una procedura per il controllo di qualita di componenti meccanici in linea di produzione, che e gia stata argomento di brevetto. Lo sviluppo di questo lavoro si colloca nell’ambito del progetto FIRB “Sistemi di produzione intelligenti, flessibili e riconfigurabili”. L’attivita svolta dal DIIM riguarda il controllo avanzato dell’affidabilita di componenti meccanici per l’industria automobilistica. Viene proposta, quindi, la realizzazione di una cella di controllo in linea di produzione capace di valutare la presenza di eventuali componenti difettosi attraverso l’analisi termica degli stessi, sollecitati secondo un modello predefinito. L’attivita, svolta in questa prima fase in laboratorio, e facilmente trasferibile in linea di produzione, considerando la possibilita di realizzare celle di prova in ambiente controllato, con condizioni praticamente identiche a quelle di laboratorio, eliminando gli effetti di disturbo che possono influenzare la risposta dell’indagine termografica in ambiente non strutturato.


Engineering Fracture Mechanics | 2010

A first approach to the analysis of fatigue parameters by thermal variations in static tests on plastics

C. Clienti; G. Fargione; G. La Rosa; Antonino Risitano; G. Risitano


Procedia Engineering | 2014

Fatigue Analysis by Acoustic Emission and Thermographic Techniques

G. La Rosa; C. Clienti; F. Lo Savio


Convegno IGF XXI Cassino 2011 | 2011

Determination of the fatigue limit by semi static tests

Giacomo Risitano; Antonino Risitano; C. Clienti


Procedia structural integrity | 2016

Experimental analysis of pedicle screws

Guido La Rosa; C. Clienti; Rosalia Mineo; Alberto Audenino


Procedia structural integrity | 2016

THE USE OF DIGITAL IMAGE CORRELATION TO CORRECT THE THERMOELASTIC CURVES IN STATIC TESTS

G. La Rosa; C. Clienti; A. Marino Cugno Garrano


Procedia structural integrity | 2016

Identification of local phenomena of plasticity in concrete under compression test

Antonino Risitano; A. D’Aveni; G. Fargione; C. Clienti


principles and practice of constraint programming | 2013

Thermal Variations in Static Tests on Plastics: a FirstApproach to the Fatigue Parameters Analysis

C. Clienti; G. Fargione; G. La Rosa; Antonino Risitano; G. Risitano

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F. Rizza

University of Catania

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