In many applications in metallography and analysis, many regions need to be considered and not only the current region. In cases where there are analyses with multiple images, the specialist should also evaluate neighboring areas. For example, in metallurgy, welding technology is derived from conventional testing and metallographic analysis. In welding, these tests allow us to know the features...

The porosity of die-cast aluminum alloys is a determining factor for the quality product. In this paper, we studied selected part AlSi9Cu3(Fe) compressor by computer tomography and metallography. case part, achievable resolution CT, non-destructive testing method, was 30 μm—this method could not detect smaller cavities. Based on metallographic analysis, percentage defects larger than μm ranges ...

Abstract The drawn arc stud welding is widely applied in steel construction, and its procedure can be qualified according to different standards by visual examinations practical destructive tests of the resulting joint. An evaluation material properties usually not requested particularly considering locally limited weld region. Nevertheless, there a need knowledge regarding complex press proces...

in the present investigation attempts were made for the first time to use the fundamental color stimulus as the input for a fixed optimized neural network match prediction system. four sets of data having different origins (i.e. different substrate, different colorant sets and different dyeing procedures) were used to train and test the performance of the network. the results showed that the us...

In digital color imaging, it is of interest to transform the color scene of an image to the other. Some attempts have been done in this case using, for example, lαβ color space, principal component analysis and recently histogram rescaling method. In this research, a novel method is proposed based on the Resenfeld and Kak histogram matching algorithm. It is suggested that to transform the color...

image retrieval is an important research field which has received great attention in the last decades. in this paper, we present an approach for the image retrieval based on the combination of text-based and content-based features. for text-based features, keywords and for content-based features, color and texture features have been used. query in this system contains some keywords and an input...

The National Transportation Safety Board coordinated with the Pipeline and Hazardous Materials to investigate November 16, 2017, rupture of Keystone Mainline number 1 crude oil pipeline operated by TransCanada Oil Operations, Incorporated. resulted from a fatigue crack that initiated near-surface cracks associated sliding contact damage at top pipe propagated failure within 7.4 years operation....