To study the types of mechanical damage for castor seeds and their effects on germination, image processing method was applied to detect affecting germination. Two typical varieties were selected test. The type taken as factor, germination rate vigor index indicators one-way analysis variance. analyzed. Different algorithms extract features cracks seed shell missing, corresponding defect parame...

This paper presents the concept and architecture of a fatigue damage control system for mechanical structures. In contrast to the conventional cycle-based approach, fatigue damage is represented via non-linear differential equations with respect to time in the state-variable setting. This damage model is compatible with the dynamic model of the plant, i.e. the process under operation and contro...

The problem of characterizing damage evolution in a generic material is addressed with the aim of tracing it back to existing growth models in other fields of research. Based on energetic considerations, a system evolution equation is derived for a generic damage indicator describing a material system subjected to an increasing external stress. The latter is found to fit into the framework of a...

STUDY DESIGN An in vitro cadaveric study of interbody fusion devices (IFDs) with differing interface geometries. OBJECTIVE To quantify the trabecular damage and mechanical property degradation resulting from mechanical testing of bone-implant constructs and evaluate the dependence on the interface geometry. SUMMARY OF BACKGROUND DATA The success of an orthopedic implant depends, in part, on...

Laboratory experiments investigating syn-eruptive crystallization are fundamental for interpreting crystal and vesicle textures in pyroclasts. Previous have advanced our understanding by varying decompression cooling pathways, volatile components, melt composition. However, they largely failed to produce the high number densities seen many cryptodome dome samples. This is feasibly due relativel...