Static Fatigue of Glass. II

Charles, R. J.

doi:10.1063/1.1722992

Cited by 242 publications

(92 citation statements)

References 4 publications

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“…Typical values of the exponent n are reported as 16 for glass (Charles, 1958), 98 for Carrara marble and 8 for Pennant sandstone (Cruden, 1974).…”

Section: Speed Of Fracture Propagationmentioning

confidence: 99%

See 1 more Smart Citation

Static Fatigue Controls Particle Crushing and Time Effects in Granular Materials

Lade

Karimpour

2010

Soils and Foundations

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“…Typical values of the exponent n are reported as 16 for glass (Charles, 1958), 98 for Carrara marble and 8 for Pennant sandstone (Cruden, 1974).…”

Section: Speed Of Fracture Propagationmentioning

confidence: 99%

“…At higher tensile stresses the microcracks begin to grow at a faster rate, and the time to complete fracture diminishes. Brittle fracture test results can exhibit considerable amounts of scatter, but Charles (1958) has expressed a relation between tensile strength of glass specimens and time-to-fracture as follows:…”

Section: Speed Of Fracture Propagationmentioning

confidence: 99%

Static Fatigue Controls Particle Crushing and Time Effects in Granular Materials

Lade

Karimpour

2010

Soils and Foundations

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“…9(b)). Charles (1958) proposed a simple expression for fitting stress corrosion experimental data, used here in a modified form, to make it dimensionally correct:…”

Section: Micromechanical Conceptual Modelmentioning

confidence: 99%

Theoretical investigation of the time-dependent behaviour of rockfill

2007

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Long-term strain records obtained in large-diameter oedometer tests on compacted gravels demonstrated that strains could be linearly related with the logarithm of time. Delayed compressibility coefficients were found proportional to the conventional stress-induced compressibility coefficients. A framework rooted on the phenomenon of crack propagation in rock particles induced by stress corrosion mechanisms is adopted to explain macroscopic observations. A model of crack propagation in loaded disc-shaped particles has been developed in order to explain the nature of particle breakage and its relationship with time, macroscopic stress and total suction. Experimental observations such as the existence of threshold stresses that mark the onset of delayed deformations are explained by the model. It was also found that the main features of the delayed deformation of rockfill could be physically explained within the developed framework. In particular, a simple closed-form relationship between the coefficient of delayed deformation, the compressibility coefficient and a parameter describing the rate of crack propagation could be found. It was found to be consistent with experimental observations.

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“…In this study, the relation between the stress intensity factor K I and the crack velocity da/dt (K I -da/dt relation) is evaluated by using the equation (Charles 1958):…”

Section: Resultsmentioning

confidence: 99%

Subcritical crack growth and long-term strength in rock and cementitious material

Nara

Takada

Mori³

et al. 2010

Int J Fract

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High-strength and ultra low-permeability concrete (HSULPC) is a strong candidate for a radioactive waste package containing transuranic radionuclides (TRU waste) for geological disposal. Knowledge of the time-dependent fracturing of HSULPC and surrounding rock mass is essential to assess the long-term stability of such underground repositories. We have measured crack velocity in andesite and HSULPC both in air and water to examine subcritical crack growth by the Double-Torsion method. In air, the crack velocity in andesite increased when the temperature and relative humidity increased. On the other hand, the temperature and relative humidity had little effect on the crack velocity in HSULPC in air. In water, the crack velocity increased when the temperature was higher for both andesite and HSULPC. Using these experimental results, the longterm strength was estimated. It was shown that the long-term strength of HSULPC was higher than that of andesite. In air, the long-term strength for andesite was affected by the temperature and relative humidity. The long-term strength for andesite decreased when the temperature or relative humidity increased. For HSULPC, the change of the long-term strength with varying temperature or relative humidity was smaller than andesite in air. In water, the long-term strength for both materials decreased with increasing the temperature. Comparing the longterm strength of andesite and HSULPC at the same environmental conditions, it was recognized that the decrease of the long-term strength of HSULPC is smaller than that of andesite. The long-term strength in water was smaller than that in air for both materials.

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Static Fatigue of Glass. II

Cited by 242 publications

References 4 publications

Static Fatigue Controls Particle Crushing and Time Effects in Granular Materials

Static Fatigue Controls Particle Crushing and Time Effects in Granular Materials

Theoretical investigation of the time-dependent behaviour of rockfill

Subcritical crack growth and long-term strength in rock and cementitious material

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