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  • 1
    Electronic Resource
    Electronic Resource
    On the HRR near-tip singularity fields (1990)
    Springer
    Journal of materials science 9 (1990), S. 879-882 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00722158
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  • 2
    Electronic Resource
    Electronic Resource
    Multi-axial creep rupture in polymethyl-methacrylate (1990)
    Springer
    Journal of materials science 9 (1990), S. 1020-1022 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00727864
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  • 3
    Electronic Resource
    Electronic Resource
    A unified approach to fatigue crack propagation in metals and polymers (1990)
    Springer
    Journal of materials science 9 (1990), S. 1427-1430 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00721605
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  • 4
    Electronic Resource
    Electronic Resource
    Quasi-static cracking of several ductile materials under plane stress conditions (1976)
    Springer
    International journal of fracture 12 (1976), S. 3-17 
    Details
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Résumé On décrit la fissuration quasi statique de divers matériaux présentant de grandes tenacités à la rupture et de faibles limites élastiques. Pour les essais de laboratoire, on utilise des éprouvettes comportant des renforcements nécessités par l'emploi d'un dispositif spécial d'essai. Ceci a permis d'éliminer, avec succès, toutes les irréversibilités ainsi que toute plastification générale autres que celles qui surviennent à l'extrémité de la fissure. Ces tenacités à la rupture en état plan de tension ont été aisément déterminées dans le cas d'alliages d'aluminium et de zinc, d'aciers à bas carbone ainsi que de polycarbonate.
    Notes: Abstract Quasi-static cracking of several ductile materials with large fracture toughnesses and low yield strengths was described. Laboratory size testpieces with reinforcements provided by special test rigs were used. All irreversibilities and general yielding other than at the crack tip were successfully eliminated. Plane stress fracture toughnesses for alloys of aluminum and zinc, low carbon steels and polycarbonate were thus easily obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00036004
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  • 5
    Electronic Resource
    Electronic Resource
    On the finite element method for calculating stress intensity factors with a modified elliptical model (1976)
    Springer
    International journal of fracture 12 (1976), S. 59-69 
    Details
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Résumé On présente une méthode par éléments finis basée sur la modification du modèle de la fonction de déplacements elliptiques développée précédemment par les auteurs, pour déterminer les facteurs d'intensité des contraintes dans des solides fissurés. Le modèle modifié conserve la simplicité de la méthode originale pour décrire les conditions de contraintes aux extrémités d'une fissure. En outre, il permet d'étudier son application à des cas où la forme de la surface de la fissure n'est pas rigoureusement elliptique. La méthode proposée évite de devoir procéder à des calculs en série de plusieurs énergies de déformation dans le corps fissuré, ainsi que le requiert l'approche basée sur l'énergie de déformation. Elle permet aussi de ne pas devoir calculer des concentrations importantes d'éléments à très petites mailles à l'extrémité de la fissure, ainsi que l'exige l'approche concentionnelle basée sur les contraintes.
    Notes: Abstract A finite element method based on the modification of the elliptical displacement function model developed earlier by the authors is presented for the determination of stress intensity factors in cracked bodies. The modified elliptical model not only retains the simplicity of the original method in describing stress conditions at the crack tips but also extends the application of the method to cases where the elliptical shape of the crack surface is not entirely preserved. The present method avoids the need for successive computations of several strain energies in a cracked body as required by the strain energy approach and of high concentration of very fine elements at the crack tip by the conventional stress approach.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00036009
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  • 6
    Electronic Resource
    Electronic Resource
    On the use of beams-on-elastic foundation model for fracture studies in aluminium/epoxy bonded components (1979)
    Springer
    International journal of fracture 15 (1979), S. R77 
    Details
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00037844
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  • 7
    Electronic Resource
    Electronic Resource
    Fracture toughness evaluation for short glass fibre reinforced composites (1991)
    Springer
    Journal of materials science 26 (1991), S. 6553-6564 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Valid plane-stress fracture toughness evaluation of short fibre reinforced composites relies essentially on the successful separation of the energy absorbed in the localized crack-tip region out of the total energy absorbed by the cracked material body at large. Three different experimental techniques, all stemming from the energetic interpretation of theJ integral, are utilized and their relative merits in the characterization of fracture initiation in short glass fibre reinforced injection-moulded nylon 6.6 examined. Various theoretical aspects concerning these experimental methods are outlined. The rationale behind using a single-edge-notched tension type specimen for theJ c test is presented. TheJ c value obtained from the compliance calibration method and the quasistatic energy method agree closely and can be considered to be independent of pre-crack length and specimen geometry when the pre-crack length to specimen width ratio (a/w) is larger than 0.45. The extrapolation method fails nevertheless to yield a physically consistentJ c value, possibly due to its questionable theoretical representation. As no constraint on boundary conditions is necessitated during the course of crack extension, the quasistatic energy is physically more appealing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00553678
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  • 8
    Electronic Resource
    Electronic Resource
    Fracture toughness evaluation for short glass fibre reinforced composites (1991)
    Springer
    Journal of materials science 26 (1991), S. 6553-6564 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Valid plane-stress fracture toughness evaluation of short fibre reinforced composites relies essentially on the successful separation of the energy absorbed in the localized crack-tip region out of the total energy absorbed by the cracked material body at large. Three different experimental techniques, all stemming from the energetic interpretation of theJ integral, are utilized and their relative merits in the characterization of fracture initiation in short glass fibre reinforced injection-moulded nylon 6.6 examined. Various theoretical aspects concerning these experimental methods are outlined. The rationale behind using a single-edge-notched tension type specimen for theJ c test is presented. TheJ c value obtained from the compliance calibration method and the quasistatic energy method agree closely and can be considered to be independent of pre-crack length and specimen geometry when the pre-crack length to specimen width ratio (a/w) is larger than 0.45. The extrapolation method fails nevertheless to yield a physically consistentJ c value, possibly due to its questionable theoretical representation. As no constraint on boundary conditions is necessitated during the course of crack extension, the quasistatic energy is physically more appealing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02402646
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  • 9
    Electronic Resource
    Electronic Resource
    Additional response: Additional discussion of “Mixed mode ductile fracture using the strain energy density criterion” (1987)
    Springer
    International journal of fracture 33 (1987), S. R73 
    Details
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00044422
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  • 10
    Electronic Resource
    Electronic Resource
    A continuum damage mechanics approach to crack tip shielding in brittle solids (1991)
    Springer
    International journal of fracture 50 (1991), S. 79-114 
    Details
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract This paper focuses firstly on the development of a comprehensive anisotropic theory of continuum damage mechanics for brittle solids suffering progressive deterioration. The basic concept of damage parameterization is re-examined and a new set of damage variables introduced yielding a new damage effect tensor through which the effective stress and strain tensors are defined. Constitutive equations of the damaged material are established incorporating a new hypothesis on equivalence between damaged and undamaged responses of the material. The model is completed by introduction of a general damage characteristic tensor which accounts for the experimentally observed fact that the rate of damage growth depends nonlinearly on applied external loads. The established damage model is next applied to investigate the crack-tip shielding effect due to anisotropic microcracking. The ratio of near-tip to remote stress intensity factors is obtained in closed form. A moderate but definite effect of anisotropy of microcracking is observed. The case of isotropic damage is found to be the least effective in screening remote external loads and is in accord with the results obtained by other researchers using different approaches.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00035206
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