Memorias de investigación
Communications at congresses:
Influence of experimental test type on the determination of probabilistic stress distribution
Year:2011

Research Areas
  • Civil engineering and architecture

Information
Abstract
Determination of fl at glass strength is extremely important for designing glazing systems. However, different experimental strength results are obtained when different experimental procedures are applied, as for instance four-point bending or coaxial doublering tests. In order to investigate the strength characteristics of tempered and annealed monolithic glasses, the experimental data are fi tted using Weibull distributions with distinct parameter values. In both cases the critical stress assigned to each specimen is calculated with a nominal model proposed by the standards. The results arising from both types of testing show an unsatisfying correlation. In fact, only the minimum value of the stress is similar, while the mean stress gives similar values for the annealed glass but not for the tempered one. On the contrary, the strength range between minimum and maximum differs markedly (47 vs. 71 MPa for the four-point bending test, and 36 vs. 150 MPa for the ring test). The discrepancies can be assigned to the dismissed character of the stress states prevailing in the uniaxial and biaxial tests. Finally, a prediction of the failure probability of real glass elements can be based on the Weibull parameters experimentally found.
International
Si
Congress
12th International Conference GPD 2011
960
Place
Tampere, Finlandia
Reviewers
Si
ISBN/ISSN
978-952-5836-02-8
Start Date
17/06/2011
End Date
20/06/2011
From page
371
To page
374
GPD 2011. Glass and Solar in Sustainable Development
Participants

Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Proyectos y Calidad
  • Departamento: Mecánica Estructural y Construcciones Industriales