Using the analogy between dielectric breakdown and mechanical fracture, a phase-field model for dielectric damage initiation and evolution has been developed. The model utilizes a continuous field of damage variable to differentiate a localized conductive channel and the undamaged bulk material. By employing a Griffith type energy criterion for the propagation of a conductive channel, direct ha...

In this study I will analyze the concept of damage as it is used in tort law. To do this, address three questions: first, there a single or multiple concepts harm? Second, what explanatory power comparative versus non-comparative criteria for determining constitutes Third, how are harm, interest and well-being linked? propose, first all, to these questions on basis certain debates held moral po...

hydro-forming is a fabrication process that uses a fluid medium to form a piece by using high internal pressure. in tube hydro-forming, a tubular blank is placed between two dies, sealed and pressurized water injected, deforming the tube walls in the cavity form of the dies. exist several typical hydro-forming processes such as t- shapes, cross-shapes and y- shapes. successful hydro-forming dep...

This paper presents a review of the major fatigue models and life time prediction methodologies for fibrereinforced polymer composites, subjected to fatigue loadings. In this review, the fatigue models have been classified in three major categories: fatigue life models, which do not take into account the actual degradation mechanisms but use S-N curves or Goodman-type diagrams and introduce som...

Geiger et al (Environ. Res. Lett. 2016 11 084012) employ two functional relationships to characterize hurricane damage in the USA—either based on GDP (one exponent) or on per capita GDP and population (two exponents). From the Akaike Information Criterion the authors cannot reject the former kind in favor of the latter. The different approaches, however, lead to divergent projections of future ...

For prevention or for compensation cases, a simple assessment of intensive impulse noise is needed. In order to choose the most appropriate frequency weighting, the transfer function from the free sound field (where we measure) to the inner ear (where damage occurs) must be taken into account. Regarding the most appropriate time constant, the reaction of the inner ear is the reference, and many...

We review our research of the past decade towards identification of radiation-induced radicals in solid state sugars and sugar phosphates. Detailed models of the radical structures are obtained by combining EPR and ENDOR experiments with DFT calculations of g and proton HF tensors, with agreement in their anisotropy serving as most important criterion. Symmetry-related and Schonland ambiguities...

Recorded signals from a guided wave structural health monitoring system are sensitive to damage but also to even small temperature changes. Previous work has shown that reasonable temperature compensation can be achieved by first selecting an optimal baseline and then stretching it to match the current signal of interest. However, this method is not perfect and its efficacy depends upon many fa...