Patents by Inventor Qiongqi WANG

Qiongqi WANG 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).

  • Method of measurement and determination on fracture toughness of structural materials at high temperature
    Patent number: 9939359
    Abstract: Disclosed is a method of measurement and determination on fracture toughness of structural materials at high temperature, comprising: preliminary assessing the ductility of a material based on a high-temperature uniaxial tensile test and the fracture characteristic; designing and manufacturing a CT specimen; conducting a monotonic loading fracture test on the CT specimen at high temperature; modifying a load-displacement curve output by a testing machine; determining a passivation coefficient M for the crack of the structural material; reversely recursing instant load-displacement data pairs corresponding to the instant crack length; calculating a J_R crack extension resistance curve of the tensile test; examining the validity of the J_R crack extension resistance curve and the fracture toughness JIC; calculating the fracture toughness per equivalent of the structural material KIC. The present invention overcomes the difficulty of placing an extensometer inside a high-temperature furnace.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: April 10, 2018
    Assignees: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY, SHANGHAI ELECTRIC POWER EQUIPMENT CO., LTD. SHANGHAI STEAM TURBINE FACTORY
    Inventors: Fuzhen Xuan, Haitao Wang, Qiongqi Wang, Linbo Mei, Xia Liu, Yuhui Huang
  • A METHOD OF MEASUREMENT AND DETERMINATION ON FRACTURE TOUGHNESS OF STRUCTURAL MATERIALS AT HIGH TEMPERATURE
    Publication number: 20160299046
    Abstract: Disclosed is a method of measurement and determination on fracture toughness of structural materials at high temperature, comprising: preliminary assessing the ductility of a material based on a high-temperature uniaxial tensile test and the fracture characteristic; designing and manufacturing a CT specimen; conducting a monotonic loading fracture test on the CT specimen at high temperature; modifying a load-displacement curve output by a testing machine; determining a passivation coefficient M for the crack of the structural material; reversely recursing instant load-displacement data pairs corresponding to the instant crack length; calculating a J_R crack extension resistance curve of the tensile test; examining the validity of the J_R crack extension resistance curve and the fracture toughness JIC; calculating the fracture toughness per equivalent of the structural material KIC. The present invention overcomes the difficulty of placing an extensometer inside a high-temperature furnace.
    Type: Application
    Filed: September 25, 2014
    Publication date: October 13, 2016
    Applicants: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY, SHANGHAI ELECTRIC POWER EQUIPMENT CO., LTD. SHANGH AI STEAM TURBINE FACTORY
    Inventors: Fuzhen XUAN, Haitao WANG, Qiongqi WANG, Linbo MEI, Xia LIU, Yuhui HUANG