Results 221 to 230 of about 85,818 (267)
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Evaluation of the area under linear loss modulus‐temperature curves
Journal of Applied Polymer Science, 1991AbstractThe area under the linear loss modulus‐temperature curves, LA, has been shown to be related to the chemical composition of the material. In addition, it can be significantly affected by morphology in multicomponent polymer systems. To characterize LA quantitatively, base‐line corrections for instrumental contributions to LA were evaluated by ...
J. J. Fay, D. A. Thomas, L. H. Sperling
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Relationship between loss-modulus and homologous temperature in superplastic alloys
Journal of Thermal Analysis and Calorimetry, 2009A study of loss modulus values was conducted for three different metal alloys, in both superplastic and non-superplastic condition, using Dynamic Mechanical Analysis (DMA). Results showed a direct relationship between loss modulus values and the homologous superplastic temperature for each of the three different metal alloys that were studied.
E. Elizabeth Martínez-Flores +2 more
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Pressure loss modulus correlation for Delta-p across uniformly distributed-loss devices
AIAA Journal, 1994A dimensionless group, called a pressure loss modulus (N(sub PL)), is introduced that, in conjunction with an appropriately defined Reynolds number, is of considerable engineering utility in correlating steady-state Delta p vs flow calibration data and subsequently as a predictor, using the same or a different fluid, in uniformly distributed pressure ...
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Bulk‐ and shear‐loss modulus defects in over‐pressured siliciclastic rocks
SEG Technical Program Expanded Abstracts 2001, 2001Summary The attenuation mechanisms affecting compressional- and shear-wave propagation at reservoir pressures were studied using a suite of overpressured siliciclastic rocks. A strong link was observed between the petrophysical characteristics of the material, the effective pressure and the wave attenuation mechanism.
Patricia R. Domnesteanu, Clive McCann
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Determination of the dynamic shear modulus and loss factor of rubber
The Journal of the Acoustical Society of America, 1980We have recently developed a new resonance theory for the scattering of compressional waves by fluid-filled spherical cavities in viscoelastic materials, and have applied it to the study of the resonance frequencies and widths of peaks in the (monopole) f0pp scattering amplitude.
G. Gaunaurd +2 more
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Influence of pendant chains on the loss modulus of model networks
Macromolecules, 1984Modification de la composante perte du module de cisaillement au cours de la reticulation de polydimethylsiloxane termine par un groupe ...
Miguel A. Bibbo, Enrique M. Valles
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Analysis of creep and modulus loss of the wood cell wall
Acta Mechanica, 2016zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Pan, Yihui, Zhong, Zheng
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Dynamic Young's modulus and loss factor of floor covering materials
Applied Acoustics, 1996Abstract The dynamic Young's modulus and loss factor of typical floor covering materials (felt, cork, solid PVC and PVC foam) have been measured as functions of frequency and strain amplitude in the range of 10 1 to 10 4 Hz and 10 −5 to 10 −2 , respectively, in order to clear up the role of material behaviour in the improvement of impact sound ...
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Specific Features of Strain Dependences of Loss Modulus in Highly Stretched Elastomers
Macromolecular Theory and Simulations, 2012AbstractThe loss modulus E″ in elastomer strips stretched by a factor of λ is studied theoretically. A small oscillating deformation is applied to these strips in the transition frequency zone between the glassy and rubbery states. The range of λ under study ranges up to ultimate extensions close to fracture.
Igor P. Borodin +2 more
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Journal of Applied Polymer Science, 1986
AbstractThe effects of temperature, molecular weight and its distribution, side chain branching, and the structure of polymers on the elastic behavior of bulk homopolymers were investigated, by using logarithmic plots of first normal stress difference (N1) against shear stress (σ12) and logarithmic plots of storage modulus (G′) against loss modulus (G″)
Chang Dae Han, Myung S. Jhon
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AbstractThe effects of temperature, molecular weight and its distribution, side chain branching, and the structure of polymers on the elastic behavior of bulk homopolymers were investigated, by using logarithmic plots of first normal stress difference (N1) against shear stress (σ12) and logarithmic plots of storage modulus (G′) against loss modulus (G″)
Chang Dae Han, Myung S. Jhon
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