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  • 1
    Electronic Resource
    Electronic Resource
    Yield of Solvated Electrons in the Aliphatic Alcohols at Picosecond Times (1974)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 78 (1974), S. 2414-2416 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150671a022
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  • 2
    Electronic Resource
    Electronic Resource
    Evolution of microcracks in brittle solids under intense dynamic loading (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 77 (1995), S. 3479-3483 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An evolution equation of microcracks for brittle cracked materials subjected to an applied dynamic tensile pressure is presented. The influence of inertial effects (or kinetics) on the dynamic growth of microcracks, which is a major characteristic of intense dynamic loading, is taken into account. Numerical analysis of the evolution equation clearly indicates that microcrack growth at high strain rate (ε(overdot)≥103 s−1) is unstable. The critical condition for microcrack dynamic growth is obtained. It is predicted that the threshold stress for dynamic growth of microcracks is dependent on the average strain rate at super-high strain rate (ε(overdot)≥106 s−1); however, numerical result is also shown that when the average strain rate ≤105 s−1, the threshold stress can be, approximately, taken to be a constant. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.359564
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  • 3
    Electronic Resource
    Electronic Resource
    Activation of boron implanted in Hg0.7Cd0.3Te by high-temperature annealing (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 4983-4988 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Boron was implanted into the p-type Hg0.7Cd0.3Te epitaxial crystals. The implantation was carried out using a fluence of 1.45×1015 cm−2 and an energy of 100 keV. The implanted specimens, as well as unimplanted ones, were annealed without encapsulation by one-zone annealing in an atmosphere of mercury vapor supplied from liquid mercury at temperatures from 250–500 °C. From the annealing of unimplanted specimens, a p-n transition at 350 °C is observed. On the other hand, from the annealing of implanted specimens, it is found that the n-type conductivity induced by implantation damage is gradually reduced with the increase of annealing temperature until a minimum appears around 350 °C, and then increases again. An enhancement of n-type conductivity can be further observed from annealing under a reduced pressure of mercury. A similar result is also obtained from the annealing of implanted specimens using a HgTe compound as the mercury reservoir instead of liquid mercury. The results suggest that the implanted borons become activated dopants after annealing at high temperature. A mechanism on the activation of boron in HgCdTe is thus proposed, and the experimental results can be satisfactorily explained by the mechanism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.340444
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  • 4
    Electronic Resource
    Electronic Resource
    The optical properties of curing epoxies and applications to the fiber-optic epoxy cure sensor
    Amsterdam : Elsevier
    Sensors and Actuators A: Physical 23 (1990), S. 1107-1110 
    Details
    ISSN: 0924-4247
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Electrical Engineering, Measurement and Control Technology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0924-4247(90)87097-3
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  • 5
    Electronic Resource
    Electronic Resource
    Modelling the fracture of cementitious materials (1992)
    Springer
    Materials and structures 25 (1992), S. 14-20 
    Details
    ISSN: 1359-5997
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Description / Table of Contents: Resume Deux modèles de description de la rupture par fissuration des matériaux à base de ciment sont ici étudiés: celui de la ‘bande de fissuration’ et celui de la ‘fissuration fictive’. Les deux types d’analyse sont très proches mais on montre cependant que le modèle de ‘fissure fictive’ peut se ramener à une méthode de superposition de trois facteurs d’intensité de contrainte dont l’utilisation requiert la connaissance d’expressions analytiques. Cette méthode se révèle donner des résultats très similaires à ceux obtenus par éléments finis avec la ‘fissure fictive’ et présente l’avantagè de pouvoir être programmée sur un ordinateur de type P.C. On démontre la capacité de prédiction du modèle de fissuration fictive par comparaison de la courbe expérimentale charge/flèche d’une petite éprouvette de mortier entaillée avec la courbe théorique calculée à partir des données obtenues sur des poutres plus grandes. On suggère que la méthode d’essai RILEM, peur la détermination de l’énergie de rupture, soit aussi utilisée afin d’établir une relation bilinéaire contrainte-déplacement pour la phase de radoucissement qui apparaît dans la zone de fissuration.
    Notes: Abstract The crack band and the fictitious crack line models of the fracture process zone in cementitious materials are discussed. The two methods are quite similar. However, the fictitious crack model is shown to lend itself to a simple K-superposition method which makes use of known analytical expressions. This method is shown to give very similar results to a finite-element analysis of the fictitious crack model and has the advantage that it can be programmed for a personal computer. The predictive capability of the fictitious crack model is demonstrated by comparison of the experimental load-deflection curve for a small notch bend mortar specimen with a theoretical curve calculated from data obtained from larger beams. It is suggested that the RILEM test method for the determination of the fracture energy should be used also to establish a bilinear stress-displacement relationship for the strain-softening of the fracture process zone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02472208
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  • 6
    Electronic Resource
    Electronic Resource
    Geometry of normed bilinear maps and the 16-square problem (1989)
    Springer
    Mathematische Annalen 284 (1989), S. 437-447 
    Details
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01442495
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  • 7
    Electronic Resource
    Electronic Resource
    Analytical bending solutions of elastica with one end held while the other end portion slides on a friction support (1997)
    Springer
    Archive of applied mechanics 67 (1997), S. 543-554 
    Details
    ISSN: 1432-0681
    Keywords: Key words elastica ; beam bending ; frictional support ; variable arc-length ; elliptic integral solution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary Treated herein is an elastica under a point load. One end of the elastica is fully restrained against translation, and elastically restrained against rotation, while the other end portion is allowed to slide over a friction support. The considered elastica problem belongs to the class of large-deflection beam problems with variable deformed arc-lengths between the supports. To solve the governing nonlinear differential equation together with the boundary conditions, the elliptic integral method has been used. The method yields closed-form solutions that are expressed in a set of transcendental equations in terms of elliptic integrals. Using an iterative scheme, pertinent bending results are computed for different values of coefficient of friction, elastic rotational spring constant and loading position, so that their effects may be examined. Also, these accurate solutions provide useful reference sources for checking the convergence, accuracy and validity of results obtained from numerical methods and software for large deflection beam analysis. It is interesting to note that this class of elastica problem may have two equilibrium states; a stable one and an unstable one.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004190050138
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  • 8
    Electronic Resource
    Electronic Resource
    Mechanistic studies on the reduction of the R2 subunit of ribonucleotide reductase
    Amsterdam : Elsevier
    Journal of Inorganic Biochemistry 43 (1991), S. 532 
    Details
    ISSN: 0162-0134
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0162-0134(91)84507-6
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  • 9
    Electronic Resource
    Electronic Resource
    On material symmetry and deformation-induced anisotropy (1993)
    Springer
    Meccanica 28 (1993), S. 341-346 
    Details
    ISSN: 1572-9648
    Keywords: Material symmetry ; constitutive equations ; deformation-induced anisotropy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Sommario Nel lavoro viene introdotto il concetto di simmetria per la descrizione del comportamento meccanico dei materiali. Per ogni materiale esistono infinite descrizioni per il suo comportamento mecanico in cui non e' necessario che i gruppi di simmetria siano gli stessi. E' stato provato che ogni descrizione anisotropa puo' essere trasformata in una isotropa od in un'altra anisotropa il cui gruppo di simmetria sia un po' piu' ampio diquello originale. Vengono introdotti i concetti di configurazione di riferimento, stato di riferimento ed elemento di riferimento di una deserizione. Si riporta anche il methodo per calcolare l'anisotropia indotta dalla deformazione.
    Notes: Abstract In this paper the symmetry concept is introduced for descriptions of the mechanical behaviour of materials. For any material there exist infinite descriptions for its mechanical behaviour whose symmetry groups need not be the same. It has been proved that any anisotropic description can be transformed into an isotropic or another anisotropic description whose symmetry group is a little larger than the original one. The concepts of reference configuration, reference state and reference element are introduced for a deseription. The method to calculate deformation induced anisotropy is also provided.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987172
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  • 10
    Electronic Resource
    Electronic Resource
    A new integral equation formulation for the analysis of crack-inclusion interactions (1992)
    Springer
    Computational mechanics 10 (1992), S. 217-229 
    Details
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A new integral equation method for the analysis of the interactions between cracks and elastic inclusions embedded in a two-dimensional, linearly elastic, isotropic infinite medium subjected to in-plane force is presented. By distributing dislocations along the crack lines and forces along the matrix-inclusion interfaces, a set of coupled integral equations is obtained. The discretization procedure of the integrals involved is discussed and the relations between the stress intensity factors and the values of the dislocation functions at the respective crack tips are derived. Several sample problems are presented in order to determine the versatility and the accuracy of this approach.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00370090
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