Abstract: Disclosed is a non-transitory computer readable medium storing a computer program, in which when the computer program is executed by one or more processors of a computing device, the computer program performs operations to provide methods for detecting flaws, and the operations may include: extracting a flaw patch from a flaw image including a flaw; preprocessing at least one of the flaw image or non-flaw image not including a flaw; extracting a non-flaw patch from at least one of the preprocessed flaw image or non-flaw image; and training a neural network model for classifying patches to flaw or non-flaw with a training data set including the flaw patch and the non-flaw patch.

Abstract: There is disclosed a method of treating a metal article which tapers towards an edge. A compressive force is applied to a treatment region of the article to generate an edge region of compressive residual stress adjacent the edge, and the treatment region is spaced apart from the edge region by an intermediate region.