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

JOURNAL OF ALLOYS AND COMPOUNDS

卷:778

Article

Sglavo, Vincenzo M.^1,4  Pugliese, Diego^2,4  Sartori, Francesco¹  Boetti, Nadia G.³  Ceci-Ginistrelli, Edoardo^2,4  Franco, Giuseppe³  Milanese, Daniel^2,4 

[1] Univ Trento, Dept Ind Engn, Via Sommarive 9, I-38123 Trento, Italy

[2] Politecn Torino, Dept Appl Sci & Technol, Corso Duca Abruzzi 24, I-10129 Turin, Italy

[3] Ist Super Mario Boella, Via PC Boggio 61, I-10134 Turin, Italy

[4] INSTM, Via G Giusti, I-50121 Florence, Italy

关键词: Phosphate glass fibers;    Strength;    Fatigue;    Elastic modulus;   

DOI  :  10.1016/j.jallcom.2018.11.033

来源: Elsevier

【 摘 要 】

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 350 MPa 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. (C) 2018 Elsevier B.V. All rights reserved.

【 授权许可】

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