Static strength of brittle materials under multiaxial nonuniform stress states: A novel statistical model for assessing size effects

2021 ◽  
Author(s):  
Ana Paula Pagnoncelli ◽  
Andrea Tridello ◽  
Davide Salvatore Paolino
Keyword(s):  
Statistical Model ◽  
Size Effects ◽  
Brittle Materials ◽  
Static Strength ◽  
Nonuniform Stress ◽  
Stress States

scholarly journals Modelling size effects for static strength of brittle materials

2020 ◽  
Vol 195 ◽  
pp. 109052
Author(s):  
A.P. Pagnoncelli ◽  
A. Tridello ◽  
D.S. Paolino
Keyword(s):  
Size Effects ◽  
Brittle Materials ◽  
Static Strength

A statistical model for ubiquitiformal crack extension in quasi-brittle materials

2017 ◽  
Vol 228 (7) ◽  
pp. 2725-2732 ◽  
Author(s):  
Jing-Yan Li ◽  
Zhuo-Cheng Ou ◽  
Yi Tong ◽  
Zhuo-Ping Duan ◽  
Feng-Lei Huang
Keyword(s):  
Statistical Model ◽  
Crack Extension ◽  
Brittle Materials

scholarly journals Temperature Robust PCA Based Stress Monitoring Approach

2016 ◽  
Vol 713 ◽  
pp. 288-292 ◽  
Author(s):  
Jabid Quiroga ◽  
John Quiroga ◽  
Luis Mujica ◽  
Rodolfo Villamizar ◽  
Magda Ruiz
Keyword(s):  
Statistical Model ◽  
Numerical Simulations ◽  
Environmental Conditions ◽  
Guided Wave ◽  
Stress Monitoring ◽  
Robust Pca ◽  
Different Temperatures ◽  
Stress States ◽  
Good Agreement

In this paper, a guided wave temperature robust PCA-based stress monitoring methodology is proposed. It is based on the analysis of the longitudinal guided wave propagating along the path under stress. Slight changes in the wave are detected by means of PCA via statistical T2 and Q indices. Experimental and numerical simulations of the guided wave propagating in material under different temperatures have shown significant variations in the amplitude and the velocity of the wave. This condition can jeopardize the discrimination of the different stress scenarios detected by the PCA indices. Thus, it is proposed a methodology based on an extended knowledge base, composed by a PCA statistical model for different discrete temperatures to produce a robust classification of stress states under variable environmental conditions. Experimental results have shown a good agreement between the predicted scenarios and the real ones

Methods for Determining the Strength of Brittle Materials in Compressive Stress States

1976 ◽  
Vol 4 (6) ◽  
pp. 383 ◽  
Author(s):  
RL Meltzer ◽  
YR Fiorini ◽  
RT Horstman ◽  
IC Moore ◽  
AL Batik ◽  
...  
Keyword(s):  
Compressive Stress ◽  
Brittle Materials ◽  
Stress States
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