Response of dry- and liquid-filled porous rocks to static and dynamic loading by variously-shaped projectiles

Rogers, C. O.; Pang, Su‐Seng; Kumano, Akihiko; Goldsmith, Werner

doi:10.1007/bf01039997

Cited by 7 publications

(3 citation statements)

References 16 publications

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“…12. This result confirms observations of Rogers et al (1986), who impinged different rocks with projectiles (d P = 6.35 mm) at high speeds; they reported that the penetration process in shale did not involve chipping, but resulted only in an indentation on the surface. In contrast, v-numbers for rhyolite and granite are low.…”

Section: Mixed Materials Removal Mode and Transition Conditionssupporting

confidence: 80%

Fracture Toughness Effects in Geomaterial Solid Particle Erosion

Momber

2014

Rock Mech Rock Eng

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Effects of fracture toughness on the impingement of geomaterials (rocks and cementitious composites) by quartz particles at velocities between 40 and 140 m/s are investigated experimentally and analytically. If schist is excluded, relative erosion (in g/g) reduces according to a reverse power function if fracture toughness increases. The power exponent depends on impingement velocity, and it varies between -0.64 and -1.33. Lateral cracking erosion models, developed for brittle materials, deliver too high values for relative material erosion. This discrepancy is partly attributed to stress rate effects. Effects of R-curve behavior seem to be marginal. An integral approach E R = K 1 Á E R P ? (1 -K 1 ) Á E R L is introduced, which considers erosion due to plastic deformation and lateral cracking. A transition functionsuggested in order to classify geomaterials according to their response against solid particle impingement.

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Section: Mixed Materials Removal Mode and Transition Conditionssupporting

confidence: 80%

Fracture Toughness Effects in Geomaterial Solid Particle Erosion

Momber

2014

Rock Mech Rock Eng

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“…4b illustrates the formation of elevated walls at the rim of permanently deformed impact craters. The appearance of the eroded surface sections is in agreement with results reported in [17] for the impingement of shale with high-speed hemispherical indenters. Figs.…”

Section: Resultssupporting

confidence: 90%

A transition function for the solid particle erosion of rocks

Momber

2015

Wear

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“…To figure out how the energy transmitted to the rock is distributed, the fracture and damage pattern caused in the rock beneath an indenter or a cutter has been widely investigated (e.g. Lundberg 1974;Kumano and Goldsmith 1982a, b;Lindqvist and Lai 1983;Lindqvist et al 1984Lindqvist et al , 1994Xu and Yu 1984;Rogers et al 1986;Howarth and Bridge 1988;Pang et al 1989;Zhang 1994Zhang , 2016Kou 1995;Liu et al 2008;Franca 2011;Entacher et al 2015;Nariseti et al 2015;Stoxreiter et al 2019a). Based on the previous studies, the fracture and damage pattern under indentation can be simplified as shown in Fig.…”

Section: Characteristics Of Percussive Drillingmentioning

confidence: 99%

Energy Requirement for Rock Breakage in Laboratory Experiments and Engineering Operations: A Review

Zhang

Ouchterlony

2021

Rock Mech Rock Eng

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Based on the review of a wide range of literature, this paper finds that: (1) the average specific surface energy of various single crystals is only 0.8 J/m2. (2) The average specific fracture energy of the rocks with a pre-crack under static cleavage tests is 4.6 J/m2. (3) The average specific fracture energy of the rocks with a pre-cut notch but with no pre-crack under static tensile fracture (mode I) tests is 4.6 J/m2. (4) The average specific fracture energies of regular rock specimens with neither pre-made crack nor pre-cut notch are 26.6, 13.9 and 25.7 J/m2 under uniaxial compression, tension and shear tests, respectively. (5) The average specific fracture energy of irregular single quartz particles under uniaxial compression is 13.8 J/m2. (6) The average specific fracture energy of particle beds under drop weight tests is 74.0 J/m2. (7) The average specific fracture energy of multi-particles in milling tests is 72.5 J/m2. (8) The average specific energy of rocks in percussive drilling is 399 J/m3, that in full-scale cutting is 131 J/m3, and that in rotary drilling is 157 J/m3. (9) The average energy efficiency of milling is only 1.10%. (10) The accurate measurements of specific fracture energy in blasting are too few to draw reliable conclusions. In the last part of the paper, the effects of inter-granular displacement, loading rate, confining pressure, surface area measurement, premade crack, attrition and thermal energy on the specific fracture energy of rock are discussed.

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Response of dry- and liquid-filled porous rocks to static and dynamic loading by variously-shaped projectiles

Cited by 7 publications

References 16 publications

Fracture Toughness Effects in Geomaterial Solid Particle Erosion

Fracture Toughness Effects in Geomaterial Solid Particle Erosion

A transition function for the solid particle erosion of rocks

Energy Requirement for Rock Breakage in Laboratory Experiments and Engineering Operations: A Review

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