3 results about "Fracture load" patented technology

A device for manipulating threaded joints, the device including a set of tongs (32), a threaded rod (72), and a break-away member (96a) configured to fracture at a predetermined fracture load to prevent tension in the threaded rod beyond a predetermined tension limit. The set of tongs is formed by a first wrench (36) configured to engage a first member of a threaded joint and a second wrench (40) configured to engage a second member of the threaded joint. The first wrench includes a first lever arm (46) and the second wrench includes a second lever arm (48). The threaded rod is engaged with the first lever arm and the second lever arm to urge the first and second lever arms toward each other through tension in the threaded rod. The threaded rod is configured to maintain tension at the predetermined tension limit upon fracture of the break-away member.

The present invention relates to the technical field of dental materials, and provides an antibacterial resin mixture, and a preparation method therefor and the use thereof. A resin-infiltrated ceramic composite material prepared by infiltrating the antibacterial resin mixture provided in the present invention into a porous ceramic framework and a dental material prepared from the antibacterial resin mixture with a component (2) can kill oral pathogenic bacteria around a prosthesis and effectively prevent secondary caries. Moreover, compared with existing resin-infiltrated ceramic composite materials, the materials have significantly improved mechanical properties, especially significantly improved fracture load, thereby improving the fracture resistance of the existing resin-infiltrated ceramic composite materials, and have good esthetic properties, thereby prolonging the service life of a prosthesis and enabling a prosthesis material to better utilize the excellent properties thereof during service.

The application discloses an experimental device for simulating fracture failure of anti-slide piles and a use method thereof, belongs to the technical field of geotechnical engineering reinforcement, adopts modular design, and comprises a pile top module, at least one pile middle module, a pile bottom module and a plurality of variable cross-section ultimate load limiting modules; the pile middle module is an upper and lower plate structure hinged by a flat hinge, the modules are slidably connected through convex and concave guide rails, the ultimate load limiting modules are inserted into aligned wedge-shaped holes, fracture occurs at the middle weak part when the ultimate load is reached, and shear failure and bending failure of the anti-slide pile can be simulated respectively. The fracture load can be accurately controlled by adjusting the thickness of the limiting module, the application has the advantages of simple structure, convenient disassembly and assembly, reusability, high test precision and suitability for research on the fracture failure mechanism of the anti-slide pile under different working conditions.