نتایج جستجو برای: mechanical part
تعداد نتایج: 868783 فیلتر نتایج به سال:
Part III of this three-part paper about CARDIFRC 1 , a class of high performance short steel fibre-reinforced cementitious composites (HPFRCCs), deals with the measurement of the tensile response of CARDIFRC 1 mixes on a specially developed specimen geometry and loading arrangement. It also compares the measured mechanical properties (Young’s modulus, E, compressive strength, fc, tensile streng...
A point cloud data set, a set of massive and dense coordinate data points sampled from the surface of a physical object, is emerging as a new representation format of 3D shapes. This is mostly attributed to recent advances in the range finding technology of high-speed 3D laser scanning. A typical laser scanned data set often contains millions of data points and this leads to significant computa...
INTRODUCTION The study was designed to explore the mechanical properties of the self-adjusting file (SAF) and its application in the root canal using continuous irrigation. METHODS The compressibility of the SAF file and the resulting peripheral force were measured using specially designed systems. The abrasivity of the file was tested on dentin blocks representing a flat root canal. The dura...
Part I of this three-part paper describes the various steps that led to the development of a class of high performance short steel fibre-reinforced cementitious composites (HPFRCCs) which has been patented under the trade name CARDIFRC1. This class of materials generally contains no coarse aggregates and is characterised by high tensile/ flexural strength and high toughness. A method is propose...
We consider two questions related to functional part families: a) how to characterize function in a computational framework, and b) how does the structure-to-function model generalize when the design changes, e.g. by changing the set of design variables? For the first, we observe that function is defined on the space of behaviours of the part, whereas structure is defined in the space of design...
Variational methods for evaluating the design of mechanisms were first introduced by this group in the form of mathematical formulations generally applicable to openand closed-loop mechanisms. This method is herein extended and demonstrated to the design of mechanical parts in the context of automatic parametrization of the geometry. The formulation is based on the development of constraint equ...
A finite element representation modelling transient heat conduction of gas tungsten arc welding of stainless steel is used to evaluate different methods for model order reduction. The focus is on establishing a linear low-order model of the dynamic relation between the welding current and the temperature measured by a radiation pyrometer. The objective of this low-order model is to design a mod...
Perspectives on invasive and noninvasive ventilatory support for critically ill patients are evolving, as much evidence indicates that ventilation may have positive effects on patient survival and the quality of the care provided in intensive care units in Brazil. For those reasons, the Brazilian Association of Intensive Care Medicine (Associação de Medicina Intensiva Brasileira - AMIB) and the...
Perspectives on invasive and noninvasive ventilatory support for critically ill patients are evolving, as much evidence indicates that ventilation may have positive effects on patient survival and the quality of the care provided in intensive care units in Brazil. For those reasons, the Brazilian Association of Intensive Care Medicine (Associação de Medicina Intensiva Brasileira - AMIB) and the...
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