In this paper fatigue test results are presented for titanium grade 5 specimens subjected to uniaxial sinusoidal loading. Specimen were previously machined in order to obtain notches of known size and geometry. The sample was equipped by a couple of strain gages to monitor the deformation of the sample during the test. At the same time also a couple of piezoelectric sensors were attached on the surface of the sample in order to allow detection of acoustic signals generated inside the material during the whole test and obtain linear localization of the emission source. A data acquisition system allowed to record, during the whole test, information about the acoustic activity in terms of cumulative hits number recorded by each sensor, localization of the acoustic event, energy of the event and the associated waveform. Results of the fatigue behaviour of the analyzed material beside the acoustic emission track are presented and discussed.
Acoustic emission analysis in titanium grade 5 samples during fatigue test / Barile, Claudia; Casavola, Caterina; Pappalettera, Giovanni; Pappalettere, Carmine. - (2016), pp. 87-91. (Intervento presentato al convegno SEM Annual Conference and Exposition on Experimental and Applied Mechanics, SEM 2015 tenutosi a Costa Mesa, CA, USA nel June 08-11, 2015) [10.1007/978-3-319-21765-9_12].
Acoustic emission analysis in titanium grade 5 samples during fatigue test
BARILE, Claudia;CASAVOLA, Caterina;PAPPALETTERA, Giovanni;PAPPALETTERE, Carmine
2016-01-01
Abstract
In this paper fatigue test results are presented for titanium grade 5 specimens subjected to uniaxial sinusoidal loading. Specimen were previously machined in order to obtain notches of known size and geometry. The sample was equipped by a couple of strain gages to monitor the deformation of the sample during the test. At the same time also a couple of piezoelectric sensors were attached on the surface of the sample in order to allow detection of acoustic signals generated inside the material during the whole test and obtain linear localization of the emission source. A data acquisition system allowed to record, during the whole test, information about the acoustic activity in terms of cumulative hits number recorded by each sensor, localization of the acoustic event, energy of the event and the associated waveform. Results of the fatigue behaviour of the analyzed material beside the acoustic emission track are presented and discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
