Measuring Material Properties in Manufacturing and Agricultural Processes

9319128柏克德需要进行理论和实验相结合的研究，以确定液体的某些特性，如表面张力和拉伸粘度，这些特性与制造和材料加工中的快速变化有关。这些动态的、过程相关的特性将从建立在理论模型上的逆方法中提取出来，该模型预测了自由液体射流的形状作为液体特性的函数。这种直接预测模型已由研究人员开发，并将扩展到非牛顿状态和反转。液体性质通常是在平衡条件下以流变学的方式确定的，这通常与快速变化的工艺环境无关。目前的方法克服了这一限制。* * *

9319128 Bechtel A combination of theoretical and experimental research is to be carried out to determine certain properties of liquids, such as surface tension and extensional viscosity, which are relevant to very rapid changes in manufacturing and materials processing. These dynamic, process-dependent properties will be extracted from an inverse method built on a theoretical model which predicts the shape of a free liquid jet as a function of liquid properties. This predictive direct model has been developed by the investigators and is to be extended into the non-Newtonian regime and inverted. Liquid properties are normally determined rheologically under equilibrium conditions, which often are not relevant to a rapidly changing process environment. The present method overcomes this limitation. ***