公开(公告)号：US20180246034A1

公开(公告)日：2018-08-30

申请号：US15442091

申请日：2017-02-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe Li ,  Martin Kramer ,  Yucong Wang

IPC: G01N21/55 ,  F02F1/00 ,  G01N21/47

Abstract: Methods for profiling a bore of an engine block are provided. Methods can comprise profiling the bore surface with a qualitative optical device (QlOD) to determine a qualitative surface characteristic map of the bore surface, wherein the QlOD comprises a light source configured to emit light toward the bore surface at an emitting angle, and a sensor array configured to sense scattered light reflected from the bore surface, and comparing the qualitative surface characteristic map to a calibration value to determine the suitability of the bore surface for thermal spray deposition. Methods can further include profiling the bore surface with a quantitative optical device (QnOD) to determine a quantitative surface characteristic, and determining a quantitative-qualitative correlation. Methods can further include profiling additional sample areas of the bore surface with the QlOD to determine a qualitative surface characteristic map of the bore surface and applying the correlation to the map.