Patents by Inventor En Chao ZHANG

En Chao ZHANG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Nondestructive testing method and device for detecting and distinguishing internal defect and external defect of wire rope
    Patent number: 11703477
    Abstract: A nondestructive testing method for detecting and distinguishing internal and external defects of a wire rope includes: acquiring a magnetic flux signal and a MFL signal of a detected wire rope; preprocessing the magnetic flux signal and the MFL signal of the detected wire rope; comparing a preprocessed magnetic flux signal and a preprocessed MFL signal with a preset magnetic flux signal threshold and a preset MFL signal threshold respectively, and calculating a defect position; extracting a magnetic flux signal of a defect and an MFL signal of the defect based on the defect position; calculating a defect width of the detected wire rope based on the magnetic flux signal of the defect and the MFL signal of the defect; calculating a defect cross-sectional area loss of the detected wire rope based on the defect width; and determining whether the defect is the internal defect or the external defect.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: July 18, 2023
    Assignee: HARBN INSTITUTE OF TECHNOLOGY (SHENZHEN) (INSTITUTE OF SCIENCE AND TECHNOLOGY INNOVATION)
    Inventors: Dong Lai Zhang, En Chao Zhang, Wei Gao, Xiao Lan Yan, Shi Min Pan
  • NONDESTRUCTIVE TESTING METHOD AND DEVICE FOR DETECTING AND DISTINGUISHING INTERNAL DEFECT AND EXTERNAL DEFECT OF WIRE ROPE
    Publication number: 20220187246
    Abstract: A nondestructive testing method for detecting and distinguishing internal and external defects of a wire rope includes: acquiring a magnetic flux signal and a MFL signal of a detected wire rope; preprocessing the magnetic flux signal and the MFL signal of the detected wire rope; comparing a preprocessed magnetic flux signal and a preprocessed MFL signal with a preset magnetic flux signal threshold and a preset MFL signal threshold respectively, and calculating a defect position; extracting a magnetic flux signal of a defect and an MFL signal of the defect based on the defect position; calculating a defect width of the detected wire rope based on the magnetic flux signal of the defect and the MFL signal of the defect; calculating a defect cross-sectional area loss of the detected wire rope based on the defect width; and determining whether the defect is the internal defect or the external defect.
    Type: Application
    Filed: March 17, 2021
    Publication date: June 16, 2022
    Applicant: HARBIN INSTITUTE OF TECHNOLOGY (SHENZHEN) (INSTITUTE OF SCIENCE AND TECHNOLOGY INNOVATION)
    Inventors: Dong Lai ZHANG, En Chao ZHANG, Wei GAO, Xiao Lan YAN, Shi Min PAN