Significant damages of core diamond bits in the process of rocks drilling

Flegner, Patrik; Kačur, Ján; Durdán, Milan; Laciak, Marek; Stehlíková, Beáta; Pástor, Marcel

doi:10.1016/j.engfailanal.2015.10.016

Cited by 22 publications

(14 citation statements)

References 9 publications

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“…Modelling and simulation are standards for research of solid waste incineration [26][27][28][29]. Understanding incinerator operations is a fundamental prerequisite for achieving of the maximum productivity of the technology and its efficiency [30]. This means that incineration activities will lead to a reduction in the produced flue gases.…”

Section: Logistics Simulation and Modelling In The Environmentmentioning

confidence: 99%

Evaluating the Waste Incineration Process for Sustainable Development through Modelling, Logistics, and Simulation

Straka¹,

Rosová²,

Malindžáková³

et al. 2018

Pol. J. Environ. Stud.

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The sharp increase in the amounts and the variety of available products on the market have also caused an increase in the amounts of different packaging and other elements that come with any given product. The large amounts of communal waste stem from different anthropomorphic activities, and different aspects of human consumption cause an increased demand for effective waste disposal by incineration, separation, recycling, or organic processing. The object of modelling and simulation is the material flow of municipal waste during its processing. The disposed waste and generated emissions have a significant impact on the environment. Therefore, the processes for monitoring and optimizing the waste treatment are of crucial importance to minimize the amounts of disposed waste and emissions as well as their

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Section: Logistics Simulation and Modelling In The Environmentmentioning

confidence: 99%

Evaluating the Waste Incineration Process for Sustainable Development through Modelling, Logistics, and Simulation

Straka¹,

Rosová²,

Malindžáková³

et al. 2018

Pol. J. Environ. Stud.

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“…As an example of the spectrogram investigation, we can present the spectral analysis of an acoustic signal of the accompanying noise in the rock drilling process [32,33]. The aim of the analysis is to obtain the information on the actual conditions of the rock disintegration by rotary drilling in terms of an optimal control of this process (see Figure 7) [34][35][36][37].…”

Section: No /mentioning

confidence: 99%

Evaluation of Sensor Signal Processing Methods in Terms of Information Theory

Flegner

Kačur

2018

Acta Polytech

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The paper deals with the examination of basic methods of evaluation of sensor signals in terms of the information content of the given method and the used technical means. In this respect, methods based on classical analog systems, digital systems in the time domain of signal processing, hybrid systems and digital systems evaluating signal in the frequency domain are compared. A significant increase in entropy in individual systems is demonstrated in the case of a more complex signal evaluation. For each measuring system, the experimental setups, results, and discussions are described in the paper. The issue described in the article is particularly topical in connection with the development of modern technologies used in the processes and subsequent use of information. The main purpose of the article is to show that the information content of the signal is increased because the signal is more complexly processed.

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“…In order for the disconnection process to be effective, it must be monitored, controlled and optimized. This requires the measurement of input technological variables such as the pressure on the drilling tool F (N) and the speed of revolutions n (rpm) of the drilling tool, as well as the output quantities noise, vibration, and bore length [1][2][3]. A relevant factor in this rotary drilling technology is the interaction of a disintegrated rock with the disintegrative tool.…”

Section: Introductionmentioning

confidence: 99%

Evaluating Noise Sources in a Working Environment when Disintegrating Rocks by Rotary Drilling

Flegner¹,

Kačur²,

Durdán³

et al. 2019

Pol. J. Environ. Stud.

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The mechanical disintegration of rocks plays an irreplaceable role in the exploration, preparation, and mining of minerals resources in geological and engineering surveys. When disintegrating by rotary drilling, the disintegration tool interacts with the rock and converts the mechanical energy to thermal energy caused by the friction of the disintegration tool on the rock. Consequently, undesirable accompanying sounds occur in the process of disintegration of the rock by drilling. These include vibrations that show up in the working environment as noise. The noise generated during rotary drilling can be scanned as an acoustic signal. From above, it is possible to say that noise and vibration have a direct negative impact on the machinery personnel, on the working environment and on the environment. At present, research in the field of the disintegration of rocks by rotary drilling is directed at analyzing the factors affecting the disintegration of rocks and the working environment. This article analyzes experimental measurements carried out on a horizontal drilling tool. Measured vibroacoustic signals in different operating modes will be processed in the time, frequency, and time-frequency domains.

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Significant damages of core diamond bits in the process of rocks drilling

Cited by 22 publications

References 9 publications

Evaluating the Waste Incineration Process for Sustainable Development through Modelling, Logistics, and Simulation

Evaluating the Waste Incineration Process for Sustainable Development through Modelling, Logistics, and Simulation

Evaluation of Sensor Signal Processing Methods in Terms of Information Theory

Evaluating Noise Sources in a Working Environment when Disintegrating Rocks by Rotary Drilling

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