Issue 30

L. Guerra Rosa et alii, Frattura ed Integrità Strutturale, 30 (2014) 438-445; DOI: 10.3221/IGF-ESIS.30.53 444 Fig. 4 shows the simulated deformation results of the glass component by ANSYS software, where the blue colour represents the deformed shape of the glass section due to the temperature and pressure loadings. It is shown that the zone near the glass-mount contact area had larger deformation, which explained why the crack initiated from there. Based on the calculated maximum tensile stress in the glass component, the design strength diagram can be generated following the integrated assessment procedure as described in the above sections, which is shown in the Fig. 5. The time- to-failure versus the maximum tensile stress curves as a function of the probability of survivability (or reliability) is shown in the diagram, which will be very helpful for the design improvement of the glass component. Figure 3 : One example of the fracture of glass component; crack initiated from the zone close to glass-mount contact area. Figure 4 : Glass section deformation simulated by FEM. Figure 5 : Design strength diagram, the time-to-failure versus the maximum tensile stress curves as a function of the probability of survivability (or reliability) P s . C ONCLUSIONS ith the increasing applications of the glass and ceramic components in the new energy industries such as the CSP systems, it is imperative to develop advanced design methods for the safety and reliability of these components, which are quite different from the metal components. The integrated assessment procedure 10 12 14 16 18 20 22 1,00 E-01 1,00 E+00 1,00 E+01 1,00 E+02 1,00 E+03 1,00 E+04 1,00 E+05 1,00 E+06 1,00 E+07 Time to Failure (Hours) Tensile stress (MPa) Ps=0,9999 Ps=0,999 W