Die Messung von Flammengeschwindigkeiten

Becker, A.; Vogt, K.

doi:10.1007/bf01341622

Cited by 7 publications

(6 citation statements)

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“…Jolly and Latimer (230) have determined the heat of formation, obtaining AH2ia = -128.5 ± 0.5 kcal. in good agreement with Becker and Roth (21) and Hahn and Juza (185). Tin forms two oxides, SnO and Sn02.…”

Section: N Silicon Group Oxidessupporting

confidence: 85%

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Thermodynamic Properties of the Oxides and their Vaporization Processes.

Brewer¹

1953

Chem. Rev.

406

130

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Section: N Silicon Group Oxidessupporting

confidence: 85%

“…at 948°K. For 3Cs20(s) = 4Cs(g) + Cs203(s), one calculates an equilibrium constant of about [10][11][12][13][14][15][16][17][18][19][20][21][22] atm. at 763°K.…”

mentioning

confidence: 99%

Thermodynamic Properties of the Oxides and their Vaporization Processes.

Brewer¹

1953

Chem. Rev.

406

130

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“…In the case of an acting torsional moment the magnetization vector is separated by a stress dependent angle from the vector of the applied magnetic field strength, as described in section 2.2. Because of the fact that torsional stress in a ferromagnetic material is equally distributed over the length of the axle, the change of the initial susceptibilities χ A(LE1) (τ ) and χ A(LE2) (τ ) by the magneto-elastic effect [6,[11][12][13][14] is comparatively the same. A difference between both magnetic fluxes is conciliated by the mechanical effect described in section 2.1.…”

Section: Basics Of the Measurement Principlementioning

confidence: 99%

Contact-less magneto-elastic torsional sensor based on phase-shift measurements

Buchenau¹,

Schmidt²,

Eckert³

2014

Meas. Sci. Technol.

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We report on the development of a contact-less measurement technique for torsional shear stress τ in ferromagnetic axles or hollow shafts, based on the magneto-elastic effect. In general, two different measuring principles for ferromagnetic materials can be realized, based on: the evaluation of the change of magnetic polarization influenced by shear stress ΔJ(τ) or the change of the magnetic susceptibility ΔχA(τ). The comprehension of the magnetic polarization or the magnetic susceptibility in a sensor concept requires an external magnetic field. Alternating magnetic fields were used as shear stress can disturb not only the amplitude but also the phase distribution of the applied magnetic field. As a result of a torsional moment acting on an axle or hollow shaft, an angle of twist η appears, which is constant over the length of the twisted object. This angle of twist can be understood as a shift of infinitesimal thin cross-sections in which the whole length of the axle is separated. Besides the macroscopic deformation effect, shear forces also affect the Weiss-domains in the micro-scale of the ferromagnetic material. The effects in the micro-scale are the base of the magneto-elastic effect. The combination of the deformation effect in the macro-scale and the deformation of the Weiss-domains in the micro-scale leads to a sophisticated measurement principle for torsional stress in axles or hollow shafts. Magneto-sensitive detectors along or around the measurement object open up the possibility for a contact-less detection of torsional stress in ferromagnetic materials. Besides a strong measuring signal, free from electromagnetic interference, the introduced contact-less measurement principle offers different advantages, like independence from compression strength, nominal tensile stress, impact load, ferromagnetic hysteresis effects and independence of the temperature-dependent electrical conductivity of the axle or hollow shaft. The characteristics of such a type of sensor are considered by a model based on Maxwell’s equations. Besides the chosen design of a contact-less torsion sensor and an experimental set-up, the obtained test results are illustrated and reported in this paper.

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“…Ni: e = -0,0006 4 1/grad Závislost modulu pružnosti E na teplotě u různých fero magnetických látek byla studována již dříve v celé řadě prací (14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27) Literatura:…”

Section: Značka Mateгiálu 20°--100° 20°-200° 20°-300° 20°-400° 20°-50unclassified

The dependence of modulus of elasticity of steel and nickel on the temperature

Šimonová-Čeřovská¹

1940

Časopis Pěst. Mat. Fys.

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Institute of Mathematics of the Academy of Sciences of the Czech Republic provides access to digitized documents strictly for personal use. Each copy of any part of this document must contain these Terms of use. This paper has been digitized, optimized for electronic delivery and stamped with digital signature within the project DML-CZ: The Czech Digital Mathematics Library http://project.dml.cz Závislost modulu pružnosti ocelí a niklu na teplotě. J. Šinionová-Čeřovská, Praha.

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Die Messung von Flammengeschwindigkeiten

Cited by 7 publications

References 0 publications

Thermodynamic Properties of the Oxides and their Vaporization Processes.

Thermodynamic Properties of the Oxides and their Vaporization Processes.

Contact-less magneto-elastic torsional sensor based on phase-shift measurements

The dependence of modulus of elasticity of steel and nickel on the temperature

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