Browsing SINTEF Open by Author "Hokka, Mikko"
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Modelling of fatigue damage in granitic rock by piezoelectric effect in quartz phase due to alternating current excitation
Saksala, Timo; Ruiz, Arturo Rubio; Kouhia, Reijo; Kane, Pascal-Alexandre Saidou; Hokka, Mikko (Peer reviewed; Journal article, 2023)This paper considers numerical modelling of hypothetical fatigue damage in granitic rock by alternating current (AC) excitation of piezoelectric properties of Quartz. For this end, a numerical method consisting of a rock ... -
Progressive Weakening of Granite by Piezoelectric Excitation of Quartz with Alternating Current
Rubio Ruiz, Rafael Arturo; Pournoori, Nazanin; Isakov, Matti; Saksala, Timo; Bjørge, Ruben; Rack, Alexander; Lukic, Bratislav; Cohen, Amitay; Levi-Hevroni, David; Kane, Pascal-Alexandre Saidou; Hokka, Mikko (Peer reviewed; Journal article, 2024)A promising solution to reduce energy usage and mitigate the wear of drilling and comminution tools during mining operations involves inducing vibrations within the piezoelectric phases dispersed in the structure of rocks ... -
Weakening of Compressive Strength of Granite by Piezoelectric Actuation of Quartz Using High-Frequency and High-Voltage Alternating Current: A 3D Numerical Study
Saksala, Timo; Rubio Ruiz, Rafael Arturo; Kane, Pascal-Alexandre Saidou; Hokka, Mikko (Peer reviewed; Journal article, 2023)Piezoelectric excitation of quartz mineral phase in granite using high-frequency and high-voltage alternating current (HF-HV-AC) is a potential new weakening pretreatment in comminution of rock. The present study addresses ... -
Weakening of tensile strength of granitic rock by HV-HF-AC actuation of piezoelectric properties of Quartz: a 3D numerical study
Saksala, Timo; Ruiz, Arturo Rubio; Kane, Pascal-Alexandre Saidou; Hokka, Mikko (Peer reviewed; Journal article, 2023)High-voltage and high-frequency alternating current (HV-HF-AC) excitation of piezoelectric properties of Quartz is a potential method to induce cracks in granite. This was recently shown in a numerical feasibility study ...