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87 results on '"Homes, Georges"'

1. The temperature dependence of yield of polycarbonate in uniaxial compression and tensile tests

Author

Crowet, Colette, Bauwens, Jean Claude, and Homes, Georges

Subjects
Mécanique sectorielle, Métallurgie et mines, Mechanics of Materials, Mechanical Engineering, General Materials Science, Technologie des autres industries
Abstract

The tensile yield stress is compared with the uniaxial compression yield stress for specimens of polycarbonate tested at constant strain rate from -120 to + 120°C. The strain rate dependence of the tensile yield stress is also studied from - 140 to + 20°C. The yield behaviour is described by a modification of the Eyring theory of non-Newtonian viscosity where the deformation is supposed to involve two different flow processes. The validity of a yield criterion previously established by one of us, is checked throughout the range of temperatures explored; the proposed equation gives a good fit to the data provided it is applied separately to each flow process. Then the present investigation, combining the yield condition with the modified Eyring theory, provides a formalism which agrees with the data and accurately renders the temperature, strain rate and pressure dependence of the yield stress of polycarbonate. © 1972 Chapman and Hall Ltd., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
1972
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4. La déformation plastique du polyméthacrylate de méthyle dans le domaine vitreux

Author

Chaudron, Georges, Homes, Georges, and Crowet, Colette

Subjects
Métallurgie
Abstract

La pagination indiquée dans la zone "Pages" est celle du tiré à part, numérisé par les Bibliothèques de l'ULB. La pagination, telle qu'elle apparait dans la revue est pp. 3434-3436., info:eu-repo/semantics/published

Published
1964

7. Prédétermination du comportement mécanique du polyester armé

Author

Bauwens, Jean Claude, Délit, Jean-Pierre, Homes, Georges, and Chaudron, Georges

Subjects
Sciences de l'ingénieur
Abstract

La pagination indiquée dans la zone "Pages" est celle du tiré à part, numérisé par les Bibliothèques de l'ULB. La pagination, telle qu'elle apparait dans la revue est pp. 1909-1912., info:eu-repo/semantics/published

Published
1967

10. Sur la viscosité des hauts polymères

Author

Bauwens, Jean Claude and Homes, Georges

Subjects
Sciences de l'ingénieur
Abstract

La pagination indiquée dans la zone "Pages" est celle du tiré à part, numérisé par les Bibliothèques de l'ULB. La pagination, telle qu'elle apparaît dans la revue est pp. 3409-3410., info:eu-repo/semantics/published

Published
1962

11. Vocabulaire photométrique

Author

Homes, Georges

Subjects
Sciences de l'ingénieur
Abstract

1ère édition., 61, info:eu-repo/semantics/published

Published
1934

23. Une théorie de la sommation d'influx nerveux

Author

Homes, Georges, Bremer, Frédéric, Homes, Georges, and Bremer, Frédéric

Abstract

SCOPUS: ar.j, La pagination indiquée dans la zone "Pages" est celle du tiré à part, numérisé par les Bibliothèques de l'ULB. La pagination, telle qu'elle apparait dans la revue, est pp. 39-64, info:eu-repo/semantics/published

Published
1931

24. Fatigue crack growth in poly (vinyl chloride)

Author

Elinck, Jean-Pierre, Bauwens, Jean Claude, Homes, Georges, Elinck, Jean-Pierre, Bauwens, Jean Claude, and Homes, Georges

Abstract

Our measurements on fatigue cracks grown in PVC under plane-strain conditions shows that the width of the observed arrest lines is in agreement with the theoretical results obtained from the Dugdale-Muskhelishvili model. Further, we have shown that the fatigue of one arrest line before rupture requires a large number of loading cycles this number of cycles is constant for every arrest line of a given specimen. Brittle fracture of the specimen occurs when the "stress-intensity factor" K first introduced by Irwin reaches a given value. © 1971 Wolters-Noordhoff Publishing., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
1971

25. Précis de physique interne des matériaux

Author

Homes, Georges and Homes, Georges

Abstract

SYL-007829 = Fascicule 1 ;SYL-007830 = Fascicule 3, Fascicule 1 :atomes et édifices atomiques -- Fascicule 3 :monocristaux et agrégats cristallins, SCA, info:eu-repo/semantics/published

Published
1949

26. Cours de physique interne des matériaux

Author

Homes, Georges and Homes, Georges

Abstract

SYL-000258 = Tome 2 (1re partie suite :chapitres VI à X), Tome 2 :Première Partie (suite) :Généralités sur les matériaux et les méthodes d'investigation qui s'y rapportent (suite) :Chapitre VI :La radiographie et le diagnostic radiographique de l'homogénéité des matériaux, Chapitre VII :L'examen de l'homogénéité par les ultrasons, Chapitre VIII :Méthodes diverses d'examen de l'homogénéité des matériaux, d'une épaisseur ou d'un niveau, Chapitre IX :Les essais mécaniques, Chapitre X :Les monocristaux, SCA, info:eu-repo/semantics/published, 1

Published
1971

31. De Kleur van het Licht

Author

Homes, Georges and Homes, Georges

Abstract

info:eu-repo/semantics/published

Published
1932

33. Note sur la photométrie des phares d'autos

Author

Homes, Georges, Marchal, Georges, Marton, Ladislas, Homes, Georges, Marchal, Georges, and Marton, Ladislas

Abstract

info:eu-repo/semantics/published

Published
1933

36. Le contrôle radiospectrographique de l'état structural des chaînes de levage

Author

Homes, Georges, Fern, Regina, Homes, Georges, and Fern, Regina

Abstract

La pagination indiquée dans la zone "Pages" est celle du tiré à part, numérisé par les Bibliothèques de l'ULB. La pagination, telle qu'elle apparaît dans la revue, est pp. 864–871, info:eu-repo/semantics/published

Published
1958

47. La radio en Belgique

Author

Homes, Georges and Homes, Georges

Abstract

info:eu-repo/semantics/published

Published
1930

48. Phénoménologie de l'amorce et de la propagation de la rupture par fatigue en flexion pure symétrique dans le chlorure de polyvinyle

Author

Homes, Georges, Danguy, Louis, Elinck, Jean-Pierre, Homes, Georges, Danguy, Louis, and Elinck, Jean-Pierre

Abstract

Inasmuch as commercial fatigue machines do not have sufficient displacement amplitude for the study of high polymers (rubber, plastics .), the authors had to design and build an original machine, having a displacement amplitude of up to 4 cm. The range of the test frequencies is between 1.2 and 3.150 c/mn and the maximum force that the machine can develop is 2 000 kg. The tress applied to the test piece is by imposed strain and is quasi-sinusoïdal. In order to study the flexural behaviour of the test pieces, the authors have designed and executed clamps by means of which the test piece can be strained by a constant bending moment, which is not the case with conventional devices. In addition, this system enables one readily to observe the test pieces during testing by means of a stroboscope having a release controlled by the machine and in particular allows the rates of propagation of the fracture to be studied. The examination of numerous fatigue-fractured test pieces shows that the fracture surfaaces in general reveal four very different areas that have developed successively: -the mirror, the fatigue fracture itself, then "the plastic furrow" and finally the brittle-fracture region. The authors have shown the influence of the frequency of stress on the dimensions of these different areas; thus, after a frequency threshold is reached, the "plastic furrow" no longer appears. They have been able to establish a low giving the length of the fatigue fracture itself in relation to the stress frequency. Finally, the authors have likewise proposed a law giving the length of the fatigue crack with reference to time, of the 1=K(t+to)1/2 type. © 1973 Secrétariat de Rédaction., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
1973

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