Patents by Inventor Kaifan DU

Kaifan DU 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).

  • Publication number: 20210056243
    Abstract: A method for establishing a geometrical imperfection database of aerospace thin-walled structures is disclosed. The method comprises the following steps: 1) design the shell quality inspection card that is suitable and convenient to measure the geometrical imperfections for field workers. Obtain the parameters and geometrical imperfections of shells by filling data of measurement points in the shell quality inspection card; 2) perform characteristics combing, mathematical description and component analysis for the geometrical imperfections obtained in the first step; 3) collect and analyze the geometrical imperfection information of multiple aerospace thin-walled shells and establish the geometrical imperfection database based on the first step and second step. The method will effectively serve the development of aerospace equipment, shorten the design cycle and provide guidance and specifications for the design of the thin-walled components carrying main load.
    Type: Application
    Filed: April 17, 2019
    Publication date: February 25, 2021
    Inventors: Bo WANG, Peng HAO, Xiangtao MA, Kaifan DU, Jie GUO, Xi ZHANG
  • Patent number: 9645054
    Abstract: A method for determining a reduction factor of a bearing capacity of an axial load cylindrical shell structure is described. In the method, a depression defect is introduced in a manner of applying a radial disturbance load. Then, an influence rule of a depression defect amplitude of a single point to an axial load bearing capacity is analyzed by using numerical values; then, defect sensitivity analysis is performed on depression defects of multiple points; then, experiment design sampling is performed by using load amplitude values and load position distribution as design variables; and finally, the most disadvantageous disturbance load of the multiple points that limits the defect amplitude is searched for, and a reduction factor of the bearing capacity of the axial load cylindrical shell structure is determined.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: May 9, 2017
    Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Bo Wang, Peng Hao, Gang Li, Kuo Tian, Zeng Meng, Kaifan Du, Yan Zhou, Xi Zhang, Xiaohan Tang, Bin Wang, Hongzhi Luo
  • Publication number: 20160187230
    Abstract: A method for determining a reduction factor of a bearing capacity of an axial load cylindrical shell structure relates to stability checking of main bearing strength thin-walled members of aerospace and architectural structures. Different from experiment experience-based conventional defect sensitivity evaluating method represented by NASA SP-8007, a depression defect is introduced in a manner of applying a radial disturbance load.
    Type: Application
    Filed: February 12, 2014
    Publication date: June 30, 2016
    Inventors: Bo WANG, Peng HAO, Gang LI, Kuo TIAN, Zeng MENG, Kaifan DU, Yan ZHOU, Xi ZHANG, Xiaohan TANG, Bin WANG, Hongzhi LUO