Calcium-phosphate glass optical fiber and capillaries (with composition identical to the core and the cladding of the fiber) were fabricated and subjected to mechanical characterization. Tensile tests were carried out to determine the strength distribution, the fatigue behavior and the elastic modulus of fibers and capillaries. The tests were performed without the application of any coating, in order to assess the behavior in bare conditions, just like in the provisional application as bio-resorbable elements. Strength ranging from 200 to 350MPa was measured for both fiber and capillaries, the Weibull's modulus being around 3 to 6, thus revealing quite scattered distributions associated to the presence of variable surface flaws. The elastic modulus of the two glasses was shown to depend on the specific composition, the presence of MgO being responsible for a stiffer material. An evident sub-critical crack growth was also pointed out in the presence of water.

Mechanical properties of resorbable calcium-phosphate glass optical fiber and capillaries / Sglavo, VINCENZO MARIA; Pugliese, Diego; Sartori, Francesco; Boetti, Nadia G.; Ceci-Ginistrelli, Edoardo; Franco, Giuseppe; Milanese, Daniel. - In: JOURNAL OF ALLOYS AND COMPOUNDS. - ISSN 0925-8388. - 778:(2019), pp. 410-417. [10.1016/j.jallcom.2018.11.033]

Mechanical properties of resorbable calcium-phosphate glass optical fiber and capillaries

Pugliese, Diego;
2019

Abstract

Calcium-phosphate glass optical fiber and capillaries (with composition identical to the core and the cladding of the fiber) were fabricated and subjected to mechanical characterization. Tensile tests were carried out to determine the strength distribution, the fatigue behavior and the elastic modulus of fibers and capillaries. The tests were performed without the application of any coating, in order to assess the behavior in bare conditions, just like in the provisional application as bio-resorbable elements. Strength ranging from 200 to 350MPa was measured for both fiber and capillaries, the Weibull's modulus being around 3 to 6, thus revealing quite scattered distributions associated to the presence of variable surface flaws. The elastic modulus of the two glasses was shown to depend on the specific composition, the presence of MgO being responsible for a stiffer material. An evident sub-critical crack growth was also pointed out in the presence of water.
File in questo prodotto:
File Dimensione Formato  
18_Sglavo_JAlCom_mech prop of resorbable fibers_postprint.pdf

accesso aperto

Licenza: Creative Commons
Dimensione 435.79 kB
Formato Adobe PDF
435.79 kB Adobe PDF Visualizza/Apri
Pugliese_2_1-s2.0-S0925838818341501-main.pdf

non disponibili

Tipologia: Versione editoriale
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 1.37 MB
Formato Adobe PDF
1.37 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11696/77366
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 22
  • ???jsp.display-item.citation.isi??? 20
social impact