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Invecchiamento e previsione della durata di vita delle guarnizioni O-ring
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ISBN10: 6206819272
ISBN13: 9786206819271
Publisher: Edizioni Sapienza
Published: Jun 25 2025
Pages: 168
Weight: 0.51
Height: 0.39 Width: 6.00 Depth: 9.00
Language: Italian
ISBN13: 9786206819271
Publisher: Edizioni Sapienza
Published: Jun 25 2025
Pages: 168
Weight: 0.51
Height: 0.39 Width: 6.00 Depth: 9.00
Language: Italian
Il dipartimento 3.4 della BAM verifica la sicurezza dei contenitori di stoccaggio per rifiuti radioattivi. In tali contenitori vengono utilizzate anche guarnizioni in elastomero, la cui durata operativa può arrivare a diversi decenni. Per questo motivo, nell'ambito di questo lavoro sono state condotte ricerche approfondite sull'invecchiamento e sulla previsione della durata di vita delle guarnizioni in elastomero. Ciò ha permesso di acquisire conoscenze approfondite sul processo di invecchiamento di diverse classi di elastomeri e su come determinare la durata di vita delle guarnizioni O-ring. L'invecchiamento artificiale è stato effettuato su tre materiali a quattro temperature. I campioni, invecchiati fino a 2,5 anni, sono stati analizzati con diversi metodi per caratterizzare i danni al materiale e il comportamento di tenuta. I risultati mostrano che, in condizioni statiche, le guarnizioni rimangono a tenuta anche quando le proprietà del materiale sono già cambiate in modo significativo, come dimostra ad esempio l'indurimento del materiale originariamente gommoso. Oltre alle proprietà del materiale, sono state quindi esaminate anche le proprietà del sistema di tenuta, che hanno un significato più rilevante in termini di tenuta.
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