A radial section morphology reconstruction method for high-temperature forgings based on mirror mapping of non-view domain

In forging process, reconstructing the radial section morphology (RSM) of high-temperature forgings is essential to ensuring their quality. However, it is usually achieved by introducing multiple devices or rotating forgings, making measurements complicated and inaccurate. To address these problems, we propose a method for reconstructing the radial section morphology of forgings by combining point clouds collected from the direct-view domain and non-view domain. Firstly, the point clouds are captured by one laser scanner combined with mirror mapping. We introduce statistical filtering and regression analysis that enable removal of discrete points and outlier clusters. Next, the cubic B-spline interpolation filtering algorithm is used to fill in missing data. Our experiments demonstrate accurate reconstruction of RSM of ring forgings having diameters of 299.2 mm with an error of less than 1.5 mm. We also demonstrate the feasibility for reconstructing the profile of non-circular forgings.