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公开(公告)号：US20230120870A1
公开(公告)日：2023-04-20
申请号：US17529697
申请日：2021-11-18
发明人： Liu LIU , Shaojun LI , Quan JIANG , Yaxun XIAO , Guangliang FENG
摘要： Disclosed is a dual channel nondestructive testing method for a rock bolt and related devices. The method includes: determining a target phase difference and an instantaneous phase difference of the first received signal and the second received signal; determining an integral instantaneous phase difference between the first received signal and the second received signal based on the target phase difference and an instantaneous phase difference; determining a length of the exposed section of the rock bolt, a length of the rock bolt and a position of a grouting defect based on the integral instantaneous phase difference, a first velocity of the acoustic signal propagating in an exposed section of the rock bolt and a second velocity of the acoustic signal propagating in an anchor section of the rock bolt.
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公开(公告)号：US11619132B2
公开(公告)日：2023-04-04
申请号：US16326136
申请日：2017-08-16
发明人： Zhigang Sun , Kuo-Ting Wu , Silvio Elton Krüger
摘要： A methods and systems for determining a change in condition of a rock bolt. Some methods may comprise, at a first point in time, propagating shear and longitudinal ultrasonic waves along the rock bolt to measure a first time of flight for each of the shear and longitudinal waves, at a second point in time after the first point in time, propagating shear and longitudinal ultrasonic waves along the rock bolt to measure a second time of flight for each of the shear and longitudinal waves, and using the relative changes of the first and second time of flights, determining the change in condition of the rock bolt section.
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公开(公告)号：US11555796B2
公开(公告)日：2023-01-17
申请号：US16910227
申请日：2020-06-24
申请人： AGC Inc.
发明人： Kazuya Sasaki , Masaaki Takata
摘要： The present invention relates to a method for evaluating the thermal expansion properties of a titania-containing glass body. On the basis of measured values, obtained at a certain temperature, for a physical parameter that changes depending on the titania concentration and a physical parameter that changes depending on the fictive temperature, the thermal expansion coefficient of the titania-containing silica glass body and the slope of the thermal expansion coefficient are calculated using a linear relational expression represented by a plurality of physical properties. The thermal expansion properties of the titania-containing silica glass body are evaluated on the basis of the calculated thermal expansion coefficient and thermal expansion coefficient slope.
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公开(公告)号：US20220412925A1
公开(公告)日：2022-12-29
申请号：US17899224
申请日：2022-08-30
发明人： David A. Jack , John E. Fitch , Theresa Vo
摘要： Embodiments are disclosed for characterizing and quantifying composite laminate structures. The embodiments take a composite laminate of unknown ply stack composition and sequence and determine various information about the individual plies, such as ply stack, orientation, microstructure, and type. The embodiments distinguish between weave types that exhibit similar planar stiffness behaviors, but produce different failure mechanisms. Individual ply information is then used to derive the laminate bulk properties from externally provided constitutive properties of the fiber and matrix, including extensional stiffness, bending-extension coupling stiffness, bending stiffness, and the like. The laminate bulk properties are then used to generate a probabilistic failure envelope for the composite laminate. In some embodiments, ply stack type and sequence are also determined for a curved composite laminate using the disclosed embodiments by adding a rotational stage.
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5.发明授权公开(公告)号：US11536698B2
公开(公告)日：2022-12-27
申请号：US17235463
申请日：2021-04-20
发明人： Muhammad Saleem
摘要： A system for non-destructive testing of a bond condition of concrete beams reinforced by steel rods is described. The system includes a transducing transmitter, a transducing receiver, and an ultrasonic pulse generator configured to generate drive signals for the transducing transmitter and receive a plurality vibrational waves at the transducing receiver. The system further includes a computing device including a measurement circuit configured to record a transit time for each vibrational wave and divide a distance between the transducing transmitter and the transducing receiver by the transit time to determine a pulse velocity of each vibrational wave, a comparison circuit configured to identify a highest pulse velocity of the vibrational waves and compare each highest pulse velocity to a first reference pulse velocity, and a decision circuit including an artificial neural network configured to identify a compromised bond condition around a steel rod.
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6.发明授权公开(公告)号：US11529122B2
公开(公告)日：2022-12-20
申请号：US16726089
申请日：2019-12-23
申请人： University of Pittsburgh—Of the Commonwealth System of Higher Education , The Regents of the University of Michigan
发明人： Kang Kim , Jingping Xu , Jonathan M Rubin
摘要： A method of evaluating tissue stiffness of a target area includes positioning an ultrasound elasticity imaging apparatus adjacent a surface of an area of tissue where the target area is located and applying a dynamic range of force to the tissue. A plurality of ultrasound beams can be directed at the tissue and a plurality of ultrasound echoes can be acquired from the strained tissue in the target area to calculate an amount of developed strain within the target area.
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公开(公告)号：US20220365035A1
公开(公告)日：2022-11-17
申请号：US17688436
申请日：2022-03-07
发明人： James BARSHINGER , Mark FEYDO , Jeffrey ANDERSON
摘要： A sensor for ultrasonically measuring a portion of a structure having a temperature significantly above room-temperature, the sensor comprising: a high-temperature portion for intimate contact with the structure, the high-temperature portion comprising at least: at least one transducer for converting a first signal to an ultrasonic transmit signal, and for converting an ultrasonic reflected signal to a second signal; a low-temperature portion comprising at least: at least one digital sensor interface (DSI) to which the transducer is electrically connected, the DSI being configured to transmit the first electrical signal and receive the second electrical signal, and to generate an A-scan signal based on the first and second electrical signals; a wireless interface for transmitting a digital signal based directly or indirectly on at least said A-scan signal; and a battery for powering the DSI and the wireless interface; and an elongated member containing one or more electrical conductors for conducting the first and second signals between the transducer and the DSI, the elongated member being configured to offset the low-temperature portion a sufficient distance away from the high-temperature portion such that the low-temperature portion is subjected to significantly less heat from the structure compared to the high-temperature portion.
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8.发明申请公开(公告)号：US20220334083A1
公开(公告)日：2022-10-20
申请号：US17235463
申请日：2021-04-20
发明人： Muhammad SALEEM
摘要： A system for non-destructive testing of a bond condition of concrete beams reinforced by steel rods is described. The system includes a transducing transmitter, a transducing receiver, and an ultrasonic pulse generator configured to generate drive signals for the transducing transmitter and receive a plurality vibrational waves at the transducing receiver. The system further includes a computing device including a measurement circuit configured to record a transit time for each vibrational wave and divide a distance between the transducing transmitter and the transducing receiver by the transit time to determine a pulse velocity of each vibrational wave, a comparison circuit configured to identify a highest pulse velocity of the vibrational waves and compare each highest pulse velocity to a first reference pulse velocity, and a decision circuit including an artificial neural network configured to identify a compromised bond condition around a steel rod.
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公开(公告)号：US11473981B2
公开(公告)日：2022-10-18
申请号：US16604431
申请日：2018-04-10
摘要： A sensor with a mechanical waveguide may be characterized using test ultrasonic signals to generate a baseline signature, and the baseline signature may later be used to detect faults in the sensor.
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公开(公告)号：US11445914B2
公开(公告)日：2022-09-20
申请号：US16301085
申请日：2017-05-15
发明人： Caterina M. Gallippi , Christopher Joseph Moore , Md Murad Hossain , Tomasz Joseph Czernuszewicz
IPC分类号： A61B5/00 , A61B5/055 , G01N29/07 , G01N29/22 , G01S15/89 , G01S7/52 , A61B8/08 , G01N29/11 , A61B5/107 , G01B15/06 , G01N11/00 , G01N29/04
摘要： Methods, systems, and computer readable media for taking measurements of a material, including determining material anisotropy, are provided. According to one aspect, a method for determining tissue anisotropy comprises: applying, to a tissue sample, a first force having a direction and having a coronal plane normal to the direction of the force, the first force having an oval or other profile with long and short axes within the coronal plane, the long axis being oriented in a first direction within the coronal plane, and measuring a first displacement of the tissue; applying, to the tissue sample, a second force, and measuring a second displacement of the tissue; and calculating a tissue elasticity anisotropy based on the measured first and second displacements. Furthermore, by applying the first and second forces multiple times, tissue viscosity, elasticity, or other anisotropy may be calculated from the multiple displacement measurements.
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