Integrazione di tecnologie non distruttive per la caratterizzazione di rocce ornamentali

Martoro, Francesca (2009) Integrazione di tecnologie non distruttive per la caratterizzazione di rocce ornamentali, [Dissertation thesis], Alma Mater Studiorum Università di Bologna. Dottorato di ricerca in Georisorse e geotecnologie, 21 Ciclo.
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ABSTRACT: The dimension stone qualification through the use of non-destructive tests (NDT) is a relevant research topic for the industrial characterisation of finite products, because the competition of low-costs products can be sustained by an offer of highqualification and a top-guarantee products. The synthesis of potentialities offered by the NDT is the qualification and guarantee similar to the well known agro-industrial PDO, Protected Denomination of Origin. In fact it is possible to guarantee both, the origin and the quality of each stone product element, even through a Factory Production Control on line. A specific disciplinary is needed. A research developed at DICMA-Univ. Bologna in the frame of the “OSMATER” INTERREG project, allowed identifying good correlations between destructive and non-destructive tests for some types of materials from Verbano-Cusio-Ossola region. For example non conventional ultrasonic tests, image analysis parameters, water absorption and other measurements showed to be well correlated with the bending resistance, by relationships varying for each product. In conclusion it has been demonstrated that a nondestructive approach allows reaching several goals, among the most important: 1) the identification of materials; 2) the selection of products; 3) the substitution of DT by NDT. Now it is necessary to move from a research phase to the industrial implementation, as well as to develop new ND technologies focused on specific aims.

Tipologia del documento
Tesi di dottorato
Martoro, Francesca
Dottorato di ricerca
Scuola di dottorato
Ingegneria civile ed architettura
Settore disciplinare
Parole chiave
prove non distrutive, analisi d'immagine, rocce ornamentali, marcatura CE
Data di discussione
28 Aprile 2009

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