-
1.发明公开公开(公告)号：US20240238856A1
公开(公告)日：2024-07-18
申请号：US18413893
申请日：2024-01-16
摘要： A method of characterizing at least one rotational and at least one linear eccentricity modes of a wall thickness of a seamless pipe induced during a manufacturing process of the seamless pipe. The method comprises the steps of measuring a wall thickness profile along and around a length of the seamless pipe using a ultrasound-based measurement tool; applying a Fourier transform to the wall thickness profile to obtain a frequency spectrum; identifying one or more amplitude peaks in the frequency spectrum; associating each amplitude peak to a corresponding one of the at least one rotational eccentricity modes; filtering the one or more amplitude peaks out of the frequency spectrum; applying an inverse Fourier transform to the frequency spectrum to obtain a filtered wall thickness profile; and modeling the filtered wall thickness profile into a radial profile of the seamless pipe representative of the at least one linear eccentricity modes.
-
公开(公告)号：US20230160856A1
公开(公告)日：2023-05-25
申请号：US17996838
申请日：2021-06-22
发明人： Morgan James HIRAIWA , Thomas GARCIN , Vincent MARTEL CARBONNEAU , Marc CHOQUET , Alexandre NADEAU
CPC分类号： G01N29/12 , G01N29/11 , G01N29/2418 , G01N29/46 , G01N29/4427 , G01N2291/267 , G01N2291/0289
摘要： Methods and systems for inspecting a weld area between a first and a second metallic sheet are provided an acoustic wave is generated in the first metallic sheet for propagation towards the second metallic sheet, across the weld area. A weld quality indicator is obtained. In some variants, the weld quality indicator is obtained from a comparison of first and second sheet time-varying signals representative of a surface motion in the first and second metallic sheets. In some variants, the weld quality indicator is based on the frequency-dependent attenuation of the acoustic wave in the second metallic sheet.
-
搜索结果
2 条记录 (耗时 0.01 秒)
