The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 21, 2023
Filed:
Apr. 21, 2021
Shandong University of Science and Technology, Shandong, CN;
Qiang Feng, Shandong, CN;
Zedong Yang, Shandong, CN;
Shuang Zhang, Shandong, CN;
Jichao Jin, Shandong, CN;
Weiwei Liu, Shandong, CN;
Zhe Qin, Shandong, CN;
Tingchun Li, Shandong, CN;
Shandong University of Science and Technology, Shandong, CN;
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 () fracture frost heaving experiment box (), pressurizing by a pressurizing apparatus () balloons on either side of the frost heaving experiment box (), shutting a valve and removing a pipe, placing the frost heaving experiment box () 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 () holding the specimen together into a high-low temperature alternating experiment box () to start a freeze-thaw cycle experiment.