Patents by Inventor Tingchun LI

Tingchun LI 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).

  • Experimental method of type I stress intensity factor test considering periodic changes of frost-heave forces
    Patent number: 11609195
    Abstract: An experimentation method for a type I stress intensity factor test considering frost heaving force periodic changes, steps being 1: preparing a specimen, waterjet cutting on the specimen to simulate a non-penetrating rock mass fracture; step 2: vacuum saturating the specimen; step 3: affixing a strain gauge in a non-elastic area at a tip of the specimen; step 4: placing the specimen into a rock mass (1) fracture frost heaving experiment box (5), pressurizing by a pressurizing apparatus (4) balloons on either side of the frost heaving experiment box (5), shutting a valve and removing a pipe, placing the frost heaving experiment box (5) holding the specimen into a water tank, allowing water to immerse the specimen; and step 5: placing the water tank and the frost heaving experiment box (5) holding the specimen together into a high-low temperature alternating experiment box (7) to start a freeze-thaw cycle experiment.
    Type: Grant
    Filed: April 21, 2021
    Date of Patent: March 21, 2023
    Assignee: Shandong University of Science and Technology
    Inventors: Qiang Feng, Zedong Yang, Shuang Zhang, Jichao Jin, Weiwei Liu, Zhe Qin, Tingchun Li
  • Experimental method of type I stress intensity factor test considering periodic changes of frost-heave forces
    Publication number: 20220381715
    Abstract: An experimentation method for a type I stress intensity factor test considering frost heaving force periodic changes, steps being 1: preparing a specimen, waterjet cutting on the specimen to simulate a non-penetrating rock mass fracture; step 2: vacuum saturating the specimen; step 3: affixing a strain gauge in a non-elastic area at a tip of the specimen; step 4: placing the specimen into a rock mass (1) fracture frost heaving experiment box (5), pressurizing by a pressurizing apparatus (4) balloons on either side of the frost heaving experiment box (5), shutting a valve and removing a pipe, placing the frost heaving experiment box (5) holding the specimen into a water tank, allowing water to immerse the specimen; and step 5: placing the water tank and the frost heaving experiment box (5) holding the specimen together into a high-low temperature alternating experiment box (7) to start a freeze-thaw cycle experiment.
    Type: Application
    Filed: April 21, 2021
    Publication date: December 1, 2022
    Inventors: Qiang FENG, Zedong YANG, Shuang ZHANG, Jichao JIN, Weiwei LIU, Zhe QIN, Tingchun LI