Multiscale Phenomena in Fatigue of Ultra-Fine Grain Materials — an Overview

Analysis of Multiscale Phenomena in Heterogeneous Materials

A new variational methodology is developed for computing optimal bounds on the stress inside thermoelastic composites. The method also provides tight bounds on the strength domains for random two-phase elastic-plastic composites. A second effort develops a global local finite element method for problems with multiple length scales such as functionally graded thermal barrier coatings. The method...

Development of Ultra-Fine-Grain Binderless cBN Tool for Precision Cutting of Ferrous Materials

Intermittent ‘self-locking’ of Grain Growth in Fine-grained Materials

Grain boundary motion may be accompanied with vacancy generation [1–4]. A typical case where a moving grain boundary produces vacancies is in primary recrystallisation, when the growth of a recrystallised grain at the cost of a grain with a large dislocation density involves release of excess free volume. Vacancies are also generated during grain growth, when the total volume of the grain bound...

radiopacity of dental materials: an overview

context this study aimed to provide an overview of the literature on the radiopacity of dental materials in order to emphasize its importance. evidence acquisition english-language literature was investigated using manual and electronic searches for the terms “radiopacity,” “dental material,” “cement,” “composite,” “ceramic,” “endodontic root canal sealer,” “bone graft,” and “acrylic resin” in ...

Fatigue: an overview.

Fatigue, a common presenting symptom in primary care, negatively impacts work performance, family life, and social relationships. The differential diagnosis of fatigue includes lifestyle issues, physical conditions, mental disorders, and treatment side effects. Fatigue can be classified as secondary to other medical conditions, physiologic, or chronic. The history and physical examination shoul...