- 41. Evaluation of blast wave parameters within the near-explosion zone in the process of rock breaking with borehole charges
- (Contens №2 2020)
- ... Methodology. The experiments involved a method to measure dynamic compressibility of bituminous coals based on the determination of both velocity of blast waves and mass velocity of particles beyond the front. A reflection method is used to construct isentropes of the explosive detonation products and their impact adiabat. ...
- Created on 10 May 2020
- 42. Thermodynamic aspect of rock destruction
- (Content №1 2020)
- ... a series of experimental studies on the density and velocity of propagation of longitudinal and transverse acoustic waves in sandstone samples under different loading conditions. Findings. According ...
- Created on 10 March 2020
- 43. Mathematical model of heat processes in terms of gas-saturated rock breaking by means of shearers and tunneling machines
- (Content №1 2020)
- ... working organ, are fire- and explosion hazardous within the velocity range of more than 0.5 m/s. Originality. Analytic expressions have been obtained to calculate the energy transferred by a ...
- Created on 10 March 2020
- 44. Results of testing and modelling the “drilling rig with hydraulic vibrator ‒ rock” system
- (Content №1 2020)
- ... Arvani, F. (2014). Influence of High Velocity Jet on Drilling Performance of PDC Bit under Pressurized Condition. American Rock Mechanics Association, 1-6. Retrieved from https://www.onepetro.org/conference-paper/ARMA-2014-7465. ...
- Created on 10 March 2020
- 45. Control of the belt speed at unbalanced loading of the conveyor
- (Contens №6 2019)
- ... defines the value of material delay in the transport system depending on the velocity defect law for conveyor belt movement. Transition period time is determined during which the output material flow is ...
- Created on 23 December 2019
- 46. Energy-saving control for traction frequency-regulated asynchronous engine of an electric vehicle
- (Contens №6 2019)
- ... power and energy losses was carried out, the electromechanical and energy processes of this FRAE for the proposed energy-saving and known (linear and parabolic) velocity trajectories were investigated. ...
- Created on 23 December 2019
- 47. Leveling of pressure flow of radial ventilator in mine ventilation system
- (Contens №6 2019)
- ... European Journal of Enterprise Technologies, 2(8), 30-38. https://doi.org/10.15587/1729-4061.2017.96774. 14. Korsun, A. S., Pisarevsky, M. I., Fedoseev, V. N., & Kreps, M. V. (2017). Velocity ...
- Created on 23 December 2019
- 48. Energy effectiveness of the differential of a device for speed change through the sun gear
- (Contens №6 2019)
- ... the performance efficiency are obtained; using the MS Excel software package, the graphical dependencies of energy efficiency on the gear ratio, the angular velocity of the sun gear and the number of stages ...
- Created on 23 December 2019
- 49. Substantiating parameters of zeolite-smectite puff-stone washout and migration within an extraction chamber
- (Contens №6 2019)
- ... minor jet velocity variation from the determined parameters results in a cut or in a fall of the washout chamber. References. 1. Nadutyi, V. P., & Kostyrya, S. V. (2018). Research results ...
- Created on 23 December 2019
- 50. Energy-saving tachograms of acceleration (deceleration) of a frequency-regulated asynchronous engine
- (Electrical Complexes and Systems)
- ... and traction loads for the proposed energy-saving and known (linear and parabolic) velocity trajectories. Electromechanical and energy transitional processes in the range of super-nominal speeds for acceleration ...
- Created on 19 August 2019