2 results about "Microphotograph" patented technology

The invention relates to a method and a device for preparing a grinding pattern for a metallurgical sample (1), wherein, after preparing the sample (1), a thermal contrasting of the surface is carried out by laser equipment, wherein, using a UKP laser (2), at least the following processing steps are carried out: cleaning (R) the surface of the sample (1) with an ablation depth between 1 and 50 µm to reveal joining gap structures (300); contrasting (K) the cleaned surface of the sample (1) with an ablation depth between 0.5 and 20 µm to make joining structures (400) visible; laser etching (A) the contrasted surface of the sample (1) via the ablation-free creation of a thermal annealing colour structure (500) and / or surface oxidation.

A computer-implemented method, when executed on data processing hardware, causes the data processing hardware to perform operations. The operations include i) via application of a machine learning algorithm to a micrograph representative of a metallic material, detecting clusters of dendrite arms in the metallic material and generating an image frame based on the micrograph and representative of the clusters of dendrite arms, ii) detecting, via application of a watershed algorithm to the image frame, individual dendrite arms within the clusters of dendrite arms, iii) applying at least one filter to the image frame, iv) identifying at least one cluster of dendrite arms in the image frame that satisfies the at least one filter, and v) generating, for the at least one cluster of dendrite arms, a cluster profile including at least an average dendrite arm spacing (DAS) value for the at least one cluster of dendrite arms.