Modeling of Microporosity Evolution During Solidification Processes
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Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.
This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.
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Abstract
The occurrence of porosity during alloy solidification is a significant factor in evaluating the quality of metal castings. In general, porosity forms when there is solidification shrinkage, failure of interdendritic feeding or exsolution of dissolved gas from the melt. The existence of porosity in castings is known to negatively effect mechanical properties, such as tensile strength, and fatigue life [1–4]. Foundry process computer simulations that help determine the location, size, shape and extent of porosity can be used by the casting designer to evaluate the probability of detecting porosity by NDE techniques.