Since the benefit of stress-induced tetragonal to monoclinic phase transformation of confined tetragonal zirconia particles was first recognized in 1975, the phenomenon has been widely studied and exploited in the development of a new class of materials known as transformation toughened ceramics (TTC). In all materials belonging to this class, the microstructure is so controlled that the tetragonal to monoclinic transformation is induced as a result of a high applied stress field rather than as a result of cooling the material below the martensitic start temperature.The significance of microstructure to the enhancement of thermomechanical properties of TTC is now well understood, as are the mechanisms that contribute beneficially to their fracture toughness. The micromechanics of these mechanisms have been extensively studied and are therefore presented here in a cogent manner.The authors also review dislocation formalism for the modelling of cracks and Eshelby's technique. In compiling this monograph the authors present the most up-to-date and complete review of the field and include several topics which have only recently been fully investigated.
Far too long, the relationship between European and African biblical scholarship has been a non-relationship. Divergent insights into how biblical texts should be interpreted and made fruitful for the current context, cultural differences, colonial past and post-colonial future, radically different social situations – this all made companionship and real interaction difficult. This rich and multilayered volume (result of a Stellenbosch conference 2006) attempts to disclose new modes of dialogue between readers of the Bible from those two worlds. More than twenty theologians from Africa and Europe reflect together on how readers from radically different contexts – professional and ordinary alike –, may become allies in an ethically accountable way of relating the biblical text to their current (global) situations and how a process of mutual learning may be established. This book provides important insights in intercultural hermeneutics, the relationship between classical historico-literary approaches and new forms of interpretation. It also gives examples of new forms of how to read the Bible in the secularised European context and the HIV/Aids stricken Africa. Particularly enriching is that every contribution is followed by a personal letter of response of another contributor to the book, giving impulses for further dialogue and debate. The book is useful for all biblical scholars and students, in particular for those interested in how to do contextual exegesis in a manner that also takes into account the context of the other.
Since the benefit of stress-induced tetragonal to monoclinic phase transformation of confined tetragonal zirconia particles was first recognized in 1975, the phenomenon has been widely studied and exploited in the development of a new class of materials known as transformation toughened ceramics (TTC). In all materials belonging to this class, the microstructure is so controlled that the tetragonal to monoclinic transformation is induced as a result of a high applied stress field rather than as a result of cooling the material below the martensitic start temperature.The significance of microstructure to the enhancement of thermomechanical properties of TTC is now well understood, as are the mechanisms that contribute beneficially to their fracture toughness. The micromechanics of these mechanisms have been extensively studied and are therefore presented here in a cogent manner.The authors also review dislocation formalism for the modelling of cracks and Eshelby's technique. In compiling this monograph the authors present the most up-to-date and complete review of the field and include several topics which have only recently been fully investigated.
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