Patents by Inventor Shitao DOU

Shitao DOU 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).

  • Patent number: 12099025
    Abstract: A device for measuring short-wavelength characteristic X-ray diffraction based on array detection, and a measurement and analysis method based on the device are provided. An array detector of the device only detects and receives a diffraction ray which is diffracted by a material of a to-be-measured part inside a sample and passes through a through hole of a receiving collimator, and rays passing through a positioning hole. The to-be-measured part inside the sample is placed at the center of the diffractometer circle of the device. The method is performed with the device. With the present disclosure, a diffraction pattern of a part inside the sample with a centimeter thickness, i.e. Debye rings, can be rapidly and non-destructively measured, thereby rapidly and non-destructively measuring and analyzing crystal structures, and its crystal structural change of the part inside the sample, such as phase, texture, and stress.
    Type: Grant
    Filed: June 25, 2022
    Date of Patent: September 24, 2024
    Assignee: THE 59TH INSTITUTE OF CHINA ORDNANCE INDUSTRY
    Inventors: Lin Zheng, Shitao Dou, Xin Chen, Lunwu Zhang, Jin Zhang, Taibin Wu, Luchang Che, Chengzhang Wang, Kun Zhou, Fangchao Zhao, Changguang He, Xianhe Feng
  • Patent number: 11846595
    Abstract: A diffraction apparatus and a method for non-destructively testing internal crystal orientation uniformity of a workpiece are provided. The apparatus includes: an X-ray irradiation system for irradiating an X-ray to a measured part of a sample under testing, and an X-ray detection system for simultaneously detecting a plurality of diffracted X-rays formed by diffraction of a plurality of parts of the sample under testing, to measure an X-ray diffraction intensity distribution of the sample under testing, where the detected diffracted X-rays are short-wavelength characteristic X-rays, and the X-ray detection system is an array detection system. By the apparatus and the method, the detection efficiency is greatly improved.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: December 19, 2023
    Assignee: THE 59TH INSTITUTE OF CHINA ORDNANCE INDUSTRY
    Inventors: Lin Zheng, Shitao Dou, Changguang He, Zhengkun Peng, Yong Xiao, Lunwu Zhang, Jin Zhang, Xianhe Feng
  • Publication number: 20220412901
    Abstract: A device for measuring short-wavelength characteristic X-ray diffraction based on array detection, and a measurement and analysis method based on the device are provided. An array detector of the device only detects and receives a diffraction ray which is diffracted by a material of a to-be-measured part inside a sample and passes through a through hole of a receiving collimator, and rays passing through a positioning hole. The to-be-measured part inside the sample is placed at the center of the diffractometer circle of the device. The method is performed with the device. With the present disclosure, a diffraction pattern of a part inside the sample with a centimeter thickness, i.e. Debye rings, can be rapidly and non-destructively measured, thereby rapidly and non-destructively measuring and analyzing crystal structures, and its crystal structural change of the part inside the sample, such as phase, texture, and stress.
    Type: Application
    Filed: June 25, 2022
    Publication date: December 29, 2022
    Applicant: THE 59TH INSTITUTE OF CHINA ORDNANCE INDUSTRY
    Inventors: Lin ZHENG, Shitao DOU, Xin CHEN, Lunwu ZHANG, Jin ZHANG, Taibin WU, Luchang CHE, Chengzhang WANG, Kun ZHOU, Fangchao ZHAO, Changguang HE, Xianhe FENG
  • Publication number: 20220074877
    Abstract: A diffraction device and a method for non-destructive testing of internal crystal orientation uniformity of a workpiece. The diffraction device comprises: an X-ray irradiation system used for irradiating X-ray to a measuring part of a measured sample (4); an X-ray detection system used for detecting a plurality of diffraction X-rays formed by diffracting the X-ray with a plurality of parts of the measured sample (4), to measure X-ray diffraction intensity distribution of the measured sample (4). The detected X-ray is short-wavelength feature X-ray, and the X-ray detection system is an array detection system (5). The method comprises steps of selecting the short-wavelength feature X-ray, performing texture analysis on the measured sample (4), and determining a diffraction vector Q to be measured; and obtaining the X-ray diffraction intensity of the corresponding part of the measured sample (4).
    Type: Application
    Filed: December 6, 2019
    Publication date: March 10, 2022
    Applicant: THE 59TH INSTITUTE OF CHINA ORDNANCE INDUSTRY
    Inventors: Lin ZHENG, Shitao DOU, Changguang HE, Zhengkun PENG, Yong XIAO, Lunwu ZHANG, Jin ZHANG, Xianhe FENG