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Tytuł:
Effect of high-temperature heating on chemical changes in M7C3 carbides of AISI D2 tool steel
Autorzy:
Nykiel, T.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/411883.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
D2 tool steel
high-temperature heating
Austenitizing
coarse primary M7C3 carbides
chemical composition
Opis:
The paper presents the study results obtained on 16H12MF/NC11LV/D2 tool steel. The main purpose of the study was to establish the chemical composition of the coarse primary M7C3 carbides occurring in that steel after a standard soft annealing. The effect of high-temperature annealing in the air atmosphere was investigated. The study was limited to the decarburized layer, on the distance of about 0.4 mm from the surface, of hardened steel after annealing and austenitizing at 1150 ºC in the air atmosphere for the periods of 30 and 90 minutes. It was found that the coarse primary M7C3 carbides of the annealed D2 tool steel differ significantly as to the contents of Cr, Mo, and V, and in the most degree to the contents of chromium and molybdenum. The average concentration of chromium rises successively with the growth of austenitizing time. On the other hand, the concentrations of molybdenum and vanadium are lower after 30 minutes of austenitizing than their concentrations in the similar carbides of the annealed steel. Prolongation of the austenitizing time up to 90 minutes results in the increase of molybdenum and vanadium contents in the coarse carbides. It was found that austenitizing of AISI D2 tool steel at the temperature of 1150 ºC in the air atmosphere leads to precipitation of the second phase, brighter in the BSE_Z pictures, in relation to the matrix of carbides, with the amount and magnitude being higher with the annealing time.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 17, 3; 258-271
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetoelectropolishing: modern and effective method of AISI 316L SS surface finishing
Magnetoelektropolerowanie jako nowa i efektywna metoda obróbki powierzchniowej stali austenitycznej AISI 316L
Autorzy:
Rokosz, K.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/155250.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
AISI 316L SS
magnetoelectropolishing (MEP)
XPS measurements
potentiodynamic measurements
nanoindentation
nanohardness
reduced Young's modulus
Cr-X/Fe-X ratio
magnetoelektropolerowanie (MEP)
pomiary XPS
pomiary potencjodynamiczne
nanoindentacja
nanotwardość
zredukowany moduł Younga
stal austenityczna AISI 316L
stosunek Cr-X/Fe-X
Opis:
The results presented in the paper have been obtained during several last years. They represent chemical composition of the passive layer measurements, its uniform and pitting corrosion resistance as well as nanohardness and reduced Young's modulus for the austenitic steel AISI 316L. The main goal is to present a new and modern method of finishing - electrochemical polishing in a magnetic field MEP with respect to the standard abrasive polishing MP and electrochemical one EP. The chemical composition of the surface layer of AISI 316L were examined using X-ray photoelectron spectroscopy (XPS); the corrosion rates were determined from potentiodynamic polarization tests. Nanohardness and reduced Young's modulus were obtained from nanoindentation measurements. The main achievement of the paper is revealing the chemical and mechanical properties of the surface layer formed after polishing MEP against the MP and EP treatments.
W artykule przedstawiono kompaktowo wyniki kilkuletnich badań i pomiarów składu chemicznego warstwy pasywnej, jej odporności na korozję równomierną oraz wżerową, jak i nanotwardość oraz zredukowany moduł Younga dla austenitycznej stali AISI 316L. Autorzy zaprezentowali nowoczesną metodę obróbki wykończeniowej – elektrochemiczne polerowanie w polu magnetycznym MEP w odniesieniu do standardowej obróbki ściernej MP oraz elektrochemicznej EP. Skład chemiczny warstwy wierzchniej stali AISI 316L zbadano przy użyciu fotoelektronowej spektroskopii promieniami Roentgena (XPS); szybkości korozji wyznaczono z badań potencjodynamicznych, a nanotwardość oraz zredukowany moduł Younga z badań nanoindentacyjnych. Głównym przedmiotem pracy jest prezentacja wpływu pola magnetycznego na własności chemiczne oraz mechaniczne warstwy wierzchniej powstałej po polerowaniu MEP na tle obróbek MP i EP. Przeprowadzone badania wykazały, że odporność na korozję wżerową powierzchni po elektrochemicznym polerowaniu w polu magnetycznym MEP wzrasta około dwukrotnie w stosunku do standardowego polerowania elektrochemicznego EP, co potwierdzają również wyniki badań XPS, obrazujące stosunek związków chromu do związków żelaza. Odnotowano również zmianę nanotwardości oraz zredukowanego modułu Younga warstw wierzchnich otrzymanych poprzez obróbkę EP i MEP, co dodatkowo potwierdza istotny wpływ pola magnetycznego na właściwości zarówno elektrochemiczne jak i mechaniczne warstwy wierzchniej.
Źródło:
Pomiary Automatyka Kontrola; 2013, R. 59, nr 12, 12; 1304-1307
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Corrosion hampering measurements of AISI 316 SS submerged in alkaline solutions
Pomiary korozji stali AISI 316 w roztworach alkalicznych
Autorzy:
Hryniewicz, T.
Kuszczak, J.
Powiązania:
https://bibliotekanauki.pl/articles/158413.pdf
Data publikacji:
2010
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
korozja
stal AISI 316
pomiar EIS
środowisko alkaliczne
chlorki
corrosion
EIS measurements
AISI 316 SS
alkaline environments
chlorides
Opis:
The aim of this study was to investigate the corrosion behaviour of AISI 316 stainless steel to be used as rebars in construction. Austenitic stainless steel AISI 316 samples were put to the alkaline aqueous environments of composition: 0.01M NaOH+0.01M KOH both free of chlorides and those containing 3% NaCl. The hydrogen ion exponent pH was 10 and 12.5. The following electrochemical methods have been used to investigate corrosion: polarization curves PC, Electrochemical Impedance Spectroscopy EIS, and 24-hour open circuit potential OCP studies. The obtained results are quite comprehensive and indicate on faster self-restoration of passive films under action of chlorides. The chlorides do not cause essential changes in the potential values, both corrosion and critical, in comparison with the results on samples studied in the solutions free of chlorides. The studies reveal that, out of two alkaline environments, the AISI 316 SS better performs in the presence of solutions of lower pH. The presence of chlorides in the solution enables faster formation of a passive film and its eventual auto-restoration in case of disruption. The presented investigation results indicate the chlorides accelerate transition of Cr(III) to Cr(VI) on steel surface. The longer steel AISI 316 sample remains in the solution, the more and more film formed on the steel surface strengthens and gets stabilized resulting in better surface protection.
W pracy przedstawiono wyniki badań korozyjnego zachowania się stali kwasoodpornej AISI 316 - przewidywanej do zastosowań konstrukcyjnych w budownictwie - w roztworach alkalicznych. Przygotowane próbki stalowe umieszczono w roztworach o składzie: 0.01M NaOH+0.01M KOH bez chlorków oraz zawierającym 3% NaCl. Wykładnik jonów wodorowych wynosił 10 i 12,5. Do pomiarów korozyjnego zachowania się stali zastosowano badania krzywych polaryzacyjnych PC, elektrochemiczną spektroskopię impedancyjną EIS, oraz badania potencjału obwodu otwartego OCP. Wyniki badań są zgodne i wskazują na szybsze samoodnowienie warstewki pasywnej pod wpływem chlorków. Chlorki nie powodują zasadniczych zmian w wartościach potencjału, i to zarówno korozyjnego jak i krytycznego, w porównaniu z wynikami uzyskanymi w roztworach bez chlorków. Wyniki badań wskazują, że spośród dwu zastosowanych roztworów, stal AISI 316 jest bardziej odporna na korozję w roztworach o niższym pH. Obecność chlorków w roztworze umożliwia szybsze tworzenie się warstewki pasywnej i jej odtwarzanie w przypadku przerwania. Wyniki badań wskazują, że chlorki przyspieszają przejście Cr(III) do Cr(VI) na powierzchni stali. Wydłużenie czasu pozostawania stali w roztworze powoduje umocnienie warstewki i stabilizację ochrony powierzchni stali.
Źródło:
Pomiary Automatyka Kontrola; 2010, R. 56, nr 4, 4; 344-348
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vertical Fall of a Body Under Free Motion
Autorzy:
Pluta, Z.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/411583.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
material body
kinetics
free fall
Path/way length
velocity
acceleration
Inertia acceleration
Gravitation acceleration
time constant
Way constant
Gravitation number constant
Opis:
The paper aims at the kinetics of a body under free fall, especially free body motion, the motion occurring in the Earth environs space, that is in the range of the gravity action. A new adequate theory of such a motion, opening new not known kinetic magnitudes, has been elaborated. This theory has its source, which is the dependence of the way length on time. That is the way characteristics created in this work. The worked out theory has been verified by experiment, referred to two different realities. One of them was the body motion in the air environment of the Earth environs space, with the second one occurring in a determined machining space-time. The adequate earth acceleration/gravity has been calculated taking advantage of the theory elaborated; and its value, as indicated, is equal 3.85 mźs-2. Two kinds of accelerations have been separated: inertial and gravitational. The relations occurring between their values on the neighbouring potential fields, unstable, and stable, have been discovered. That discovery indicates on the existence of quantum nature of gravitation.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 4; 56-72
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kinetics, Dynamics and Energy of Solid on the Example of a Tool Fixed Flexibly: Part 3 – Energy
Autorzy:
Pluta, Z.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/411604.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Tool
Machining space-time
potential field
Work
energy
Potential
Mechanics
Opis:
This work is a continuation of the problems of kinetics and dynamics of solid on the example of a tool fixed flexibly under cutting. Present work is concerned on the development of work and energy. A special attention has been paid to the work description by underlying a distinctness and lack of connection with the energy notion. Polarization of these two magnitudes has been revealed. An adequate and extended definition of energy in general, with mechanical energy in particular, is formulated. There are three kinds of mechanical energy considered, located on the stable static potential field being one of the limits of the machining space-time. They are the following energies: repel, inertial, and gravitational. Proper measures/potentials have been assigned to these energies, treating the energy as a mental notion, having no physical meaning in contrast to the potential as the physical magnitude.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 10, 2; 126-136
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adequate theory of oscillator: a prelude to verification of classical mechanics. Part 1
Autorzy:
Pluta, Z.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/411615.pdf
Data publikacji:
2012
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
oscylator
zasada zachowania energii
potencjał pola
grawitacja
oscillator
energy
principle of energy conservation
space-time
potential field
gravitation
Opis:
In the paper, the adequate theory of oscillator is presented, being a sort of prelude to verification of the classical theory of mechanics. The developed theory is based on properly understood the notion of energy, on quantum value changes of its determined measures (potentials), as well as of such chan ges types of sites of the total energetic states which present the essence of the true principle of energy conservation. General characteristics of classical mechanics is presented by exemplification of artifacts of classical theory of oscillator, energetic aspects of its motion, kinetics of the body In harmonic motion, and finely a new adequate theory of oscillator. This is the first part of the theory.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2012, 2; 28-34
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel Theory of Mathematical Pendulum. Part 2
Autorzy:
Pluta, Z.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/411646.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
mathematical pendulum
Inertia
kinetics
potential field
Stable state
Unstable state
Opis:
The paper is concerned on a new adequate theory of a simple mathematical pendulum. Part 1 of the paper was devoted to the behaviour of pendulum in particular points, that is central and terminal/extremum ones. This Part 2 of the theory begins with the analysis of path length of the pendulum weight. Then the kinetics of the pendulum weight is analyzed by separating and the descriptions of differentiated motion of this body in the consecutive neighbouring space-times corresponding with particular quarter-periods. It is about accelerated free variable motion and the following after it a retarded motion of this kind, and then again accelerated, etc. In the summary, further elaborations in the subject are forecasted, regarding both dynamics and energy of the flat mathematical pendulum. It is indicated that the necessity to “rethink” many existent theories is of importance.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 9, 2; 186-201
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analytical dependence of substance solubility measure on temperature
Autorzy:
Pluta, Z.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/411690.pdf
Data publikacji:
2012
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
rozpuszczalność
substancja
temperatura
potencjał pola
stała temperatury
współczynnik rozpuszczalności
nasilenie zmian współczynnika rozpuszczalności
solubility
substance
temperature
potential field
temperature-solubility space
temperature constant
solubility coefficient
intensity of changes of the solubility coefficient
Opis:
The work covers an adequate analytical dependence of solubility measure of the chemical substances on the water/aqueous solution temperature. The solubility was defined and new, more readable solubility measure was introduced; the coefficient of solubility has been proposed instead. Then the source differential equation was introduced as the basis for the derivation of a final analytical form of dependence of the solubility coefficient on temperature. That characteristics has been developed by determining the dependence of the solubility coefficient variability intensity on temperature. An example of the use of presented theory has been delivered by referring it to the phenomenon of dissolution of AgNO3 silver nitrate in the aqueous environment. In the summary, quite a developed use of the source differential equation has been underlined with some more examples revealed.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2012, 5; 20-34
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantum theory of gravitation
Autorzy:
Pluta, Z.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/411692.pdf
Data publikacji:
2012
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
grawitacja
czasoprzestrzeń
potencjał
potencjał pola
zasada zachowania energii
gravitation
space-time
potential
potential field
principle of energy conservation
Opis:
In the paper, the outline of a new quantum theory of gravitation is presented. The energetic states of a material body, stable and unstable, are described. Characteristics of a body motion in a gravitation-inertia space-time has been given. It has been proved that all the time both gravitation and inertia are co-existent, independent on the position of a moving object. This is the reason of that twolink name of the space-time. A thorough in-depth analysis of the problem made it possible to state that so called the law of common gravity is a hyperbolic approximation of a proper course of inertia force. Therefore the mentioned courses have only two common points. One of them, the initial point belongs also to the course line of the gravity force, constant on the whole length of space-time. This theory is adequate in character and thus generally does not corresponds with the existent classical theory of gravitation.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2012, 5; 35-45
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adequate theory of oscillator: a prelude to verification of classical mechanics. Part 2
Autorzy:
Pluta, Z.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/411760.pdf
Data publikacji:
2012
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
oscylator
zasada zachowania energii
potencjał pola
grawitacja
oscillator
energy
principle of energy conservation
space-time
potential field
gravitation
Opis:
In the paper, the adequate theory of oscillator is presented, being a sort of prelude to verification of the classical theory of mechanics. In the first part of the paper the principle of energy conservation was considered. This second part of the paper is to present the energetic aspects of oscillator motion. Here also an exemplary real system corresponding with the existent differential equation of oscillator is given. They are to develop the kinetics of a body in the harmonic motion, to be presented in the next Part of the work.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2012, 3; 1-10
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adequate theory of oscillator : a prelude to verification of classical mechanics. Part 4
Autorzy:
Pluta, Z.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/411854.pdf
Data publikacji:
2012
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
oscylator
energia
zasada zachowania energii
czasoprzestrzeń
potencjał pola
grawitacja
oscillator
energy
principle of energy conservation
space-time
potential field
gravitation
Opis:
In the paper, the adequate theory of oscillator is presented, being a sort of prelude to verification of the classical theory of mechanics. The developed theory is based on a properly understood notion of energy, quantum value changes of its determined measures (potentials), as well as of such chan ges types of sites of full energetic states which presents the essence of the true principle of the energy conservation. In the first part of the paper the principle of energy conservation was considered. Then the energetic aspects of the oscillator motion, with an exemplary real system motion was presented. The third part was a development of kinetics of a body in the harmonic motion and verification of the adequate theory of the oscillator. At the end, this Part 4 is devoted to the determination of the gravity acceleration by means of the mathematical pendulum to confirm the previously presented findings.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2012, 4; 1-7
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel Modeling of the Phenomenon of Air-Cooled Solid
Autorzy:
Pluta, Z.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/411916.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
phenomenon of body cooling
thermal space-time
potential field
time constant
cooling rate
temperature
time
Opis:
The paper turns the attention to the thermal problems of the solid cooling in air. The physical aspect of mathematic approach has been underlined. The analysis and critical evaluation of Newton's Law concerning the solid air-cooling have been performed. The cognitive path leading to the solution is presented with the result being the body temperature dependence on time of cooling down in the air. Then the course of solution concerning the result of the adequate dependence of temperature of the cooled body on time has been presented. In the study, the stress is put on constant magnitudes chich characterize the susceptibility of solid to the cooling in the air. In the end, the synthetic formulation of all functional characteristics of the thermal phenomenon discussed in the paper, have been presented.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 1; 1-16
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adequate Theory of Vertical Motion of a Mass-Elastic System
Autorzy:
Pluta, Z.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/412071.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Theory of oscillation motion
Vertical mass-elastic system
Free harmonic oscillator motion
potential field
force characteristics
Source equation of path/way length
time constant
Opis:
The paper covers an adequate theory on vertical motion of the mass-elastic system. This system is an oscillator with the motion being a free harmonic motion. The first extended link of the consideration presents a critical analysis of the existent knowledge referred to this subject. Then the energetic states of the oscillator have been determined. Next the force characteristics of the free harmonic motion of the oscillator are presented. A general source equation of the path/way length and the resulting detailed forms, signalizing extensive possibilities to build up the characteristics, have been presented. Finally the connections between the characteristics of real and simulative motions were derived. It should be added that this first mentioned motion is the subject of adequate description presented here. The simulated motion is referred to the existent classical theory which has been subjected under a critical consideration.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 6; 116-136
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kinetics, Dynamics and Energy of Solid on the Example of a Tool Fixed Flexibly: Part 2 - Dynamics
Autorzy:
Pluta, Z.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/412227.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Tool
dynamics
Machining space-time
potential field
Potential
Mechanics
Opis:
This work is a continuation of the problems of kinetics, dynamics, and energy of solid on the example of a tool fixed flexibly under cutting. The work consists with three parts. Part 1 covered the kinetics of the system. Present work is devoted to the dynamics of a tool in the machining space-time. Dynamic characteristics of the whole machining system are considered by determining forces being the measures of particular reasons for material cutting. The reasons are the following forces: gravity, inertia, and repel. In the last Part 3 of the work, a special attention is to be paid to the work description and the energy notion.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 10, 1; 110-118
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mass Moment Determination Using Compound Pendulum
Autorzy:
Pluta, Z.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/412302.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
mathematical pendulum
compound pendulum
mass moment
angular acceleration
inertia moment
time constant
gravitation
pendulum vibration period
Opis:
This work has been performed to verify the existent knowledge on determination of the mass moment. For the experiment, a compound pendulum was used. The motivation to undertake these studies were experimental results indicating a big discrepancy in mass moments between the values coming from calculations using the definition formula and these obtained from the experiment. In relation to the axial moment the relative error equals 23.6%, whereas regarding the polar moment the error reached 56.4%. Considering the reason of that discrepancy we could find the existent theory not to be adequate. The theory is then considered in view of verifying first the mathematical pendulum and next the physical/ compound pendulum theory. The consideration has been focused on the description of accelerated motion cycle of both pendulums as it was enough to solve the problem. A source differential equation, which serves to solve any quantum phenomena, was used in the study. Then the course of creation of detailed characteristics of the phase of mathematical pendulum accelerated motion is presented as the basis to derive formula on the mass moment of a compound pendulum. At the end this new adequate theory was verified showing the relative error to be less than one per cent.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 3; 85-100
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 46

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