Micro-destructive cutting techniques for the characterization of natural limestone

Theodoridou, Magdalini; Dagrain, Fabrice; Ioannou, Ioannis

doi:10.1016/j.ijrmms.2015.02.012

Cited by 21 publications

(12 citation statements)

References 11 publications

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“…4 clearly shows that the intrinsic specific energy (ε) is very close to the uni-axial strength of the rock (q) when the back rake angle ranges from 5 • to 20 • , see Table 4. This result confirms previous findings by other researchers [11,20], see Fig. 5.…”

Section: Cutting Responses Atsupporting

confidence: 94%

An experimental study of the effect of back rake angle in rock cutting

Rostamsowlat

Richard²,

Evans

2018

International Journal of Rock Mechanics and Mining Sciences

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The objective of this paper is to investigate the influence of the rake angle on the magnitude of the intrinsic specific energy and the inclination of the force acting on the cutting face of a Polycrystalline Diamond Compact (PDC) sharp cutter while tracing a groove on the surface of a rock sample. An extensive and comprehensive set of cutting experiments are performed on a wide range of quarry rock samples using a state of the art rock cutting equipment (Wombat). The results conform with the previous studies by other researchers; the intrinsic specific energy is in good agreement with the uni-axial compressive strength of the rock samples when the cutter is positioned at back rake angles between 5 • and 20 •. New results on a few rock samples were also obtained by performing novel experimental tests at very large rake angles (θ > 70 •) as well as negative rake angles, showing that the intrinsic specific energy increases dramatically once the back rake angle exceeds 75 •. Results also indicate that the decrease of the apparent interfacial friction angle with increasing back rake angle seems to follow a "universal trend" weakly dependent on the rock sample.

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Section: Cutting Responses Atsupporting

confidence: 94%

An experimental study of the effect of back rake angle in rock cutting

Rostamsowlat

Richard²,

Evans

2018

International Journal of Rock Mechanics and Mining Sciences

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“…Originally developed for use in petroleum engineering, the latter device has also recently been used (e.g. Theodoridou et al, 2015;Richard et al, 2012;Dagrain and Germay, 2006) to investigate material properties for various purposes, including conservation (e.g., Campbell et al, 2011;Dagrain et al, 2010b). Its mode of operation relies on the incremental formation of a groove on the surface of the test sample using a diamond cutter.…”

Section: Description Of Micro-destructive Experimental Techniquesmentioning

confidence: 99%

“…Both methods have already been proven useful for assessing the mechanical properties of building materials either in the lab or, in the case of the DRMS, in-situ (e.g. Theodoridou et al, 2015;De Clercq et al, 2014;Richard et al, 2012;Fernandes and Lourenço, 2007;Dagrain and Germay, 2006;Tiano, 2001). Furthermore, they provide comparable results due to their similar mode of operation; this is based on cutting a material either by linear scratching or rotational drilling and subsequently recording its respective resistance Dagrain et al, 2010a).…”

Section: Introductionmentioning

confidence: 99%

Micro-destructive mapping of the salt crystallization front in limestone

Modestou

Theodoridou

Ioannou

2015

Engineering Geology

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“…Hence, research on the relationships between these techniques and UCS for a wide variety rock types is an increasingly hot topic. [9][10][11] Methods based on elastic ultrasonic waves measurement are the most common properties used for estimating UCS non-destructively. [12][13][14][15][16][17] Among these, the compressional or primary (P) wave velocity, Vp, (also named ultrasonic pulse velocity) is the most frequently used because of its easy determination.…”

Section: Introductionmentioning

confidence: 99%

Improving uniaxial compressive strength estimation of carbonate sedimentary rocks by combining minimally invasive and non-destructive techniques

Benavente

Fort

Gómez-Heras

2021

International Journal of Rock Mechanics and Mining Sciences

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Uniaxial compressive strength (UCS) is the most used parameter to measure rock strength. However, restrictions in sampling large volume of material, the need of very large set of results and onsite characterisation of UCS nondestructively are requirements in many scientific and engineering investigations. The estimation of UCS from a single non-destructive or minimally invasive technique (NDT) may result incomplete because each NDT is sensitive to different compositional and textural factors.This paper combines open porosity, P-wave velocity, Leeb hardness and micro-drilling resistance force to estimate USC for a wide range of carbonate sedimentary rock types with different petrographic characteristics. Results reveal that mineralogical composition significatively affects micro-drilling resistance force profiles and Pwave velocity values, especially for quartz-bearing rocks. In addition, texture controls substantially the reproducibility of tests sensible to rock surface properties, such as Leeb hardness and micro-drilling resistance force.Fifteen simple and multiple expressions for UCS are fitted. Linear expressions have shown better coefficients of determination (R 2 ) than non-linear equations because of the linearity shown by individual parameters. Curve fitting improves as the number of petrophysical parameters increase in the multiple linear regression analysis. The best correlation is found when the equation incorporates all the mechanical parameters obtained nondestructively as well as open porosity (R 2 = 0.910). Leeb hardness is always the most significant variable of the fitted regressions and its addition into multiple linear equations causes an increase of R 2 . Open porosity also improves R 2 whereas drilling force and P-wave velocity have a lower statistical weight in the expressions. The UCS estimation from all NDT, without considering open porosity, shows a good correlation (R 2 = 0.899), which presents the advantage that they can be obtained non-destructively with portable equipment and can provide a numerous set of results at relatively low cost.

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Micro-destructive cutting techniques for the characterization of natural limestone

Cited by 21 publications

References 11 publications

An experimental study of the effect of back rake angle in rock cutting

An experimental study of the effect of back rake angle in rock cutting

Micro-destructive mapping of the salt crystallization front in limestone

Improving uniaxial compressive strength estimation of carbonate sedimentary rocks by combining minimally invasive and non-destructive techniques

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