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公开(公告)号：US12129621B2
公开(公告)日：2024-10-29
申请号：US17638298
申请日：2020-07-10
申请人： SHANDONG UNIVERSITY
发明人： Shucai Li , Liping Li , Hongliang Liu , Zongqing Zhou , Shaoshuai Shi , Zizheng Sun , Shen Zhou , Jie Hu , Chengshuai Qin , Hongyun Fan
摘要： A platform, system, and method for simulating critical rock collapse of surrounding rock in underground engineering includes: four vertically arranged reaction walls defining a square reaction space, and a base mounted at a lower end opening of the wall; and a row of horizontally arranged stress loading plates at a side of each wall close to the reaction space, and a reaction beam above this space, where the reaction beam, the stress loading plate, and the base define a loading space, and the loading space is configured for placement of a surrounding rock simulation block to be tested; the stress loading plate capable of moving horizontally in a direction of the reaction wall, and the reaction beam capable of moving in a vertical direction, so as to load the surrounding rock simulation block; and the stress loading plate and the reaction beam being driven by linear motion units for movement.
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公开(公告)号：US12085541B2
公开(公告)日：2024-09-10
申请号：US17835881
申请日：2022-06-08
发明人： Mao-Wei Lin
摘要： A device to intercept a falling ball and prevent a second impact in a hardness or other test of a product and a falling ball impact tester including the device are disclosed. The device includes a sensor for detecting a position of the falling ball, an interception plate defining a catching groove, and a driving member connected to the interception plate and the sensor and providing motion. The driving member can move the interception plate to a position where the catching groove is in a falling path of the falling ball or is just outside such path, according to detection by the sensor.
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公开(公告)号：US12031003B2
公开(公告)日：2024-07-09
申请号：US17076448
申请日：2020-10-21
发明人： Byron J. Knight , David Opalsky
CPC分类号： C08J7/048 , B01L3/5085 , C08J7/043 , C08J7/065 , C08J7/123 , C08J7/18 , C12Q1/686 , B01L2200/12 , B01L2200/16 , B01L2300/161 , C08J2345/00 , G01N3/303
摘要： The disclosure provides solid compositions such as lyophilisates adhered to surfaces such as plasma-treated surfaces and related methods, uses, kits, intermediates, starting materials, and downstream products.
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公开(公告)号：US20240085292A1
公开(公告)日：2024-03-14
申请号：US17942356
申请日：2022-09-12
CPC分类号： G01N3/303 , G01N3/02 , G01N2203/04
摘要： A test fixture is provided for dropping an article from a height to a floor, with the article oriented in relation to the floor at a select angle. The fixture includes a column frame, an overhead beam, a carriage, first and second guy wires, first and second spools, and first and second chains. The frame supports first and second guide arms on opposing sides. The overhead beam has a distance span substantially parallel to the floor. The carriage is disposed substantially parallel to the floor and has first and second opposing guides separated by the span. The guy wires attach to the beam separated the span and pass through the guide arms. The first and second spools to receive the corresponding guy wires. The first and second chains suspend the article from the carriage above the floor. Upon release of the guy wires, the carriage falls until contact with the guide arms while the article contacts the floor. Additionally, rods connected at the ends of article and suspended from the carriage to further ensure the article's angle.
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公开(公告)号：US20230341306A1
公开(公告)日：2023-10-26
申请号：US18135420
申请日：2023-04-17
发明人： Mike Zettel , Yubiao Liu , James Hicks , Kay Bernhard , Pooja Bajaj , Mark Lamont , Ellen Turner
CPC分类号： G01N3/303 , G01N33/442 , G01N3/04 , G01N2203/0039 , G01N2203/0252 , G01N2203/0476 , G01N2203/0264 , G01N2203/024 , G01N2203/001
摘要： The present invention provides a standard testing methodology for making quantitative determinations as to the chemical resistance of thermoplastics commonly used for non-disposable medical devices by evaluating the retention of tensile and/or impact properties of the thermoplastic materials after exposure to chemicals associated with healthcare grade disinfectants. Versions of the test methods may be used with any of a variety of different thermoplastic materials, each having a different stiffness or elastic modulus; and versions of the test methods may be used with any of a variety of different hospital grade cleaning agents or disinfectants. Using the methodology of embodiments of the present invention, different thermoplastic materials may be tested against different cleaners or disinfectants to provide a uniform basis for comparison. This allows those who make chemicals, polymers and medical equipment to have a uniform way of evaluating those materials for compatibility with various cleaners and disinfectants used in the medical industry to make objective comparisons, and to allow end users to make the same evaluations and comparisons.
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公开(公告)号：US11624689B2
公开(公告)日：2023-04-11
申请号：US17288389
申请日：2019-10-22
发明人： Vincenzo Perrone , Andrea Soffritti
摘要： A falling-object protective structures (FOPS) test assembly for carrying a FOPS test of a wall of cab of a heavy vehicle is configured to releasably carry a test ball for the FOPS test above a predefined distance above wall. The FOPS test assembly defines a closed path for test ball from its housing position to wall, and includes a handling means configured to assume a first condition in which they do not interfere with the passage of test ball through the closed path when ball passes through closed path in a first direction and a second condition in which handling means lock and hold test ball within the closed path once test ball passes again through the closed path in a second direction opposite to the first direction.
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公开(公告)号：US20220317005A1
公开(公告)日：2022-10-06
申请号：US17541654
申请日：2021-12-03
发明人： GABTAE KIM
IPC分类号： G01N3/303
摘要： A drop test device includes a clamp that grips a falling body and that drops the falling body by releasing, by a predetermined operation, a gripping force applied to the falling body and an impact plate having an impact surface with which the falling body collides. The falling body includes a display module that operates in a first mode and a second mode and a jig to which the display module is coupled. The jig includes a first jig to which the display module in the first mode is coupled and a second jig to which the display module in the second mode is coupled.
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公开(公告)号：US11435272B1
公开(公告)日：2022-09-06
申请号：US17578995
申请日：2022-01-19
发明人： Mohammed Alghamdi
IPC分类号： G01N3/303
摘要： A method of determining shear strength of soil using a fall cone apparatus is provided. The method includes generating a first plot having graph lines defined for penetration depth values ranging from 4 to 20 mm on a first logarithmic paper, deducing a first mathematical model based on the first plot, and generating a second plot having the graph lines extended for a predefined penetration depth range based on the first mathematical model. The method further includes generating a third plot having graph lines corresponding to the extended penetration depth values defined for the W/A ratio values ranging from 0.17 to 13.3 on a second logarithmic paper, deducing a second mathematical model based on the third plot, generating a fourth plot having the graph lines extended for a predefined W/A ratio range based on the second mathematical model, and determining shear strength based on the fourth plot.
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公开(公告)号：US20210293679A1
公开(公告)日：2021-09-23
申请号：US16959895
申请日：2020-01-03
发明人： Weimin LIANG , Jian GONG , Yu ZHAO , Fengbin CHEN, , Liping WANG , Minmin LI , Gaowei YUE , Haixiao LIN
摘要： The disclosure relates to a vertical Hopkinson pressure bar test device and a test method. The device comprises a guide cylinder, an incident bar, a transmission bar, a buffer bar and a striker, and further comprises a base; side support plates arranged vertically and upwards are provided symmetrically on two sides of the base, a horizontal first lateral support plate is provided at the top between the side support plates on the two sides, three groups of horizontal second lateral support plates are provided below the first lateral support plate sequentially between the side support plates on the two sides, and each group is provided with a clamping mechanism clamping a corresponding incident bar, transmission bar or buffer bar; the surfaces of the incident bar is pasted with a first strain gauge pad and the transmission bar is pasted with a second strain gauge pad. According to the disclosure, the striking velocity is accurately controlled to render a medium or low velocity for analyzing the dynamic mechanical properties of low-wave impedance materials such as coal and light concrete, satisfying the requirements of dynamic tests on high, medium and low velocities.
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公开(公告)号：US11073454B2
公开(公告)日：2021-07-27
申请号：US16246548
申请日：2019-01-14
申请人： Oren Petel
发明人： Oren Petel , Stephane Magnan , Scott Dutrisac , Karen Taylor , Ashley Mazurkiewicz , Sheng Xu , MacKenzie Brannen
摘要： A method and apparatus for testing the response of protective headgear 104 to impact forces. A high-speed cineradiography imaging system 100 is used to obtain full-field, time-resolved internal monitoring and measurement of headgear component (pads 140 and liners 142) deformation and interaction with a head surrogate (headform 102), deformation of headform components, and stress and strain transfer into the headform. Radiopaque contrast materials (144 & 148) and integration techniques are used to highlight specific regions of interest within the headgear and headform components during the impact loading events.
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