Titolo:  Incremental ring core by optical methods: preliminary results
Data di pubblicazione:  2014
Autori:  Baldi, Antonio; Bertolino, Filippo
Presenza coautori internazionali:  no
Lingua:  Inglese
Titolo del libro:  Experimental and Applied Mechanics, Volume 6
ISBN:  978-3-319-06988-3
Editore:  Springer
Tutti i curatori:  Nancy Sottos, Robert Rowlands, Kathryn Dannemann
Pagina iniziale:  131
Pagina finale:  136
Numero di pagine:  6
Digital Object Identifier (DOI):  http://dx.doi.org/10.1007/978-3-319-06989-0_17
Codice identificativo Scopus:  2-s2.0-84922980917
URL:  https://link.springer.com/book/10.1007/978-3-319-06989-0
Revisione (peer review):  Esperti anonimi
Nome del convegno:  2014 SEM Annual Conference on Experimental and Applied Mechanics
Periodo del convegno:  2-5 giugno 2014
Luogo del convegno:  Greenville, SC, USA
Abstract:  The ring core method is a well-known technique for residual stress measuring. It consists of milling a circular ring around the point of interest and measuring the surface deformations of the core. The method is more sensitive than hole drilling, but its sensitivity decreases with depth to become null when ring depth is equal to one third of the diameter. To overcome this problem, in literature an incremental version of the technique has been proposed consisting of removing the core, re- installing the strain gauge rosette and re-performing the measurement. Although the idea is interesting, its practical implementation is quite difficult, in particular re-installing the rosette is almost impossible when depth becomes significant, thus the incremental measurement is never performed. In this work we propose to replace the strain gauge rosette with an optical technique. In this way the incremental approach becomes viable, even though, depending on the optical technique used, some practical problems have to be addressed.
Tipologia: 4.1 Contributo in Atti di convegno

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