scholarly journals DEFINITION OF PULSE SIGNAL PARAMETERS AND THE PROCESS OF MEASURMENT WITH EXPERIMENTAL VERIFICATION AND SIMULATION IN MATLAB

2020 ◽  
Vol 5 (2) ◽  
pp. 105-112
Author(s):  
Filip Simjanoski
Keyword(s):  
Experimental Verification ◽  
Pulse Signal ◽  
Signal Parameters ◽  
Definition Of

Dynamics of Initial Penetration in Drilling: Part 2—Motion Models for Drill Skidding and Wandering With Experimental Verification

2005 ◽  
Vol 127 (2) ◽  
pp. 289-297 ◽  
Author(s):  
Yongping Gong ◽  
Cheng Lin ◽  
Kornel F. Ehmann
Keyword(s):  
Experimental Verification ◽  
Weak Form ◽  
Dynamic Force ◽  
The Finite Element Method ◽  
Governing Equations ◽  
Motion Models ◽  
Initial Penetration ◽  
Radial Forces ◽  
Compressive Axial Load ◽  
Definition Of

This part of the paper is aimed at the development of models for the drill tip’s transverse and angular motions, the definition of models for establishing the drilled hole’s profile and, by combining these results with the dynamic force models of Part 1, the formulation of the complete model for drill skidding and wandering. An experimental verification of the models concludes the paper. For the development of the drill motion models the drill is simplified as a pretwisted beam subjected to a compressive axial load and radial forces acting on its tip. The governing equations are developed using Hamilton’s principle. Subsequently, the weak form of the governing equation is formulated to facilitate their solution by the finite element method. The corresponding boundary conditions for the motion model are also defined for three drilling phase, i.e., drill skidding, drill wandering and stabilized drilling. Based on the drill tip’s wandering locus and drill rotation, a mathematical model for describing the drilled hole’s profile is developed.

A reasonable Gibbsian definition of the dew point and its experimental verification

AIChE Journal ◽  
1975 ◽  
Vol 21 (1) ◽  
pp. 168-169
Author(s):  
Riki Kobayashi ◽  
Norman F. Carnahan
Keyword(s):  
Experimental Verification ◽  
Dew Point ◽  
Definition Of

scholarly journals Analysis of the applicability of the bionic structures in optimizing transportation weight

Rail Vehicles ◽  
2014 ◽  
pp. 39-43
Author(s):  
Maciej Grygier
Keyword(s):  
Energy Consumption ◽  
Experimental Verification ◽  
Final Stage ◽  
Optimization Method ◽  
Selection Algorithm ◽  
The World ◽  
Normative Requirements ◽  
Simple Logic ◽  
Definition Of ◽  
Interesting Solution

Transportation is equipment which absorbs energy. In the era of the energy rising prices one seeks solutions that can result in savings due to reduced energy consumption. The world of science and industry is continuously looking for savings in this area. In simple logic, we can talk about savings when there is a reduction in kerb weight of driven object. This paper presents an optimization method that can be used to reduce the weight of vehicles. Mass optimization is a process that has to be conducted on basing on the assumed criteria and, as in the case described here, the normative requirements. Presented process begins with the definition of the area to be analysed and then decomposition and selecting the typical construction nodes after that continues to picking library solutions based on which, the selection algorithm is built. User calls back the criteria and selects it interesting solution: the extreme: a light and expensive, heavy and cheap or many other combinations. The study aimed to achieve the effect of optimization based on computational methods in the final stage of the experimental verification, depending on the case.

scholarly journals Problems of legality of investigative actions aimed at finding evidence

2020 ◽  
Vol 9 (28) ◽  
pp. 113-122
Author(s):  
Lysenko Volodymyr ◽  
Vasyl Yurchyshyn ◽  
Vasyl Shybiko
Keyword(s):  
Experimental Verification ◽  
Visual Inspection ◽  
The Body ◽  
Forensic Expertise ◽  
Mandatory Participation ◽  
Definition Of ◽  
Procedural Basis ◽  
Factual Data ◽  
Do So ◽  
Comprehensive Study

The purpose of the article is a comprehensive study of the problems of establishing the guilt of a person in the offense committed by means of pre-trial investigation by investigators, prosecutors and other persons authorized to do so, as well as establishing the lawfulness of such procedural actions. According to the purpose, it is substantiated that the investigative review is a visual inspection by the authorized persons of the object with the purpose of revealing the traces of the crime, the objects related to its commission, as well as the information about the fact and mechanism of its commission reflected in the features of this object and other circumstances relevant to the proceedings. It is established that the factual basis for the review is primarily data that indicate the possibility of detecting on the body of the person traces of the offense or special signs. Its special procedural basis is the motivated decision of the prosecutor. Procedural actions such as corpse exhumation, investigative experiment and forensic examination have been considered and analyzed. In the process of researching the topic, the authors conclude that in Ukraine the legality and objectivity of investigative actions needs to be more clearly enshrined in law. In particular, the authors propose an additional list of objects of the investigative review and the definition of the investigative examination, the separation of the actual grounds for conducting the examination, the approval of the provisions on the mandatory participation of those understood during the exhumation of the corpse as the investigator, the definition and actual reasons for conducting the investigative experiment as an action, the purpose of which is the experimental verification or refinement of factual data obtained in the course of the investigation, as well as the determination and factual basis of the conduct and appointment of forensic expertise.

A Novel Field Generator for Magnetic Stimulation in Cell Culture Experiments

1997 ◽  
Vol 20 (6) ◽  
pp. 352-356 ◽  
Author(s):  
G. Vogt ◽  
A. Schrefl ◽  
R. Mitteregger ◽  
D. Falkenhagen
Keyword(s):  
Magnetic Fields ◽  
Magnetic Stimulation ◽  
Low Frequency ◽  
Homogeneous Field ◽  
Specific Cell ◽  
Coil Design ◽  
Critical System ◽  
System Parameters ◽  
Signal Parameters ◽  
Definition Of

A novel field generator specially designed to examine the influence of low frequency magnetic fields on specific cell material was constructed and characterized. The exposure unit described in this paper consists of a controller unit and three sets of coils. The field generator permits a precious definition of the revelant signal parameters and allows the superposition of alternating current (AC) and direct current (DC) magnetic fields. Critical system parameters were monitored continuously. The three sets of coils, each arranged in the Helmholtz Configuration were characterized. After data processing and visualization the results showed a constant and homogeneous field within the experimental area. The special coil design also allows their use in an incubator.

scholarly journals Definition of cutting force constituents at turning depending on stress-strain properties of material worked

2016 ◽  
Vol 1 (11) ◽  
pp. 31-36
Author(s):  
Артём Чуприков ◽  
Artem Chuprikov ◽  
Александр Ямников ◽  
Aleksandr Yamnikov ◽  
Александр Харьков ◽  
...  
Keyword(s):  
Yield Strength ◽  
Tool Wear ◽  
Cutting Force ◽  
Experimental Verification ◽  
Rear Surface ◽  
Radius Of Curvature ◽  
New Materials ◽  
Shrinkage Factor ◽  
Actual Yield ◽  
Definition Of

Cited in the reference literature, empirical formula is usually acceptable for standard materials processed. When new materials have to repeat the experiments again. The article presents the analytical relationships derived from the generalization of the work of Russian and American scientists, in particular: VF Bobrov, NI Lvov, VS Kushner, a Merchant ME, Astakhov, V.P. These relationships relate the values of the components of the cutting force with time and the actual yield strength of the material being processed, making it much easier to calculate the components of the experiment of cutting force in turning based on the radius of curvature of the cutting edge and tool wear on the rear surface. Shrinkage factor chips taken approximately equal to one. Experimental verification showed acceptability found dependences for practical use, particularly important in the processing of materials of new brands.

scholarly journals Experimental verification of visual method for measuring displacements of contact line elements

2018 ◽  
Vol 180 ◽  
pp. 04003
Author(s):  
Jacek Skibicki
Keyword(s):  
Contact Line ◽  
Experimental Verification ◽  
Power Supply ◽  
Measurement Method ◽  
Current Collector ◽  
Power Delivery ◽  
Diagnostic Systems ◽  
Visual Method ◽  
Definition Of ◽  
Line Elements

The increase of rail vehicles speed, as well as the increase of their power, puts high demands on the power delivery system for traction vehicles The most critical point in the vehicle's power supply circuit is the contact between the current collector and contact wires. Ensuring a reliable co-operation of the current collector and contact line, requires technical development of the contact line and current collector construction, as well as improvement of diagnostic systems of these components. This is translated into the need to develop new measurement methods, which allow for more complete definition of the parameters of these elements of traction vehicle power supply system. Each new measurement method requires verification, performed by calibrating or comparing the results with another measurement method which has already been tested. The article presents results of experimental verification of a visual method for measuring the displacement of contact wires, with a proven method based on short range laser rangefinders and calliper as reference measurement.

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