Patents by Inventor Gongtian SHEN
Gongtian SHEN 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).
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Publication number: 20230274866Abstract: The present disclosure provides methods for preparing magnetostrictive powder and magnetostrictive coating, and relates to the field of magnetic functional materials and preparation thereof. The method for preparing magnetostrictive powder includes putting metals for preparing magnetostrictive powder into a vacuum melting furnace to be melted into a solution; and atomizing the solution into fine droplets by ultrasonic atomization, so that the fine droplets are cooled and solidified into magnetostrictive powder. In the method for preparing magnetostrictive powder according to the embodiments of the present disclosure, the sizes of the prepared powder are relatively uniform, the powder yield exceeds 90%, the ultrasonic atomization energy consumption is low, and energy is saved by about ΒΌ compared with conventional atomization.Type: ApplicationFiled: January 13, 2023Publication date: August 31, 2023Inventors: Gongtian SHEN, Qingli QI, Yang ZHENG, Yilin YUAN, Qingchuan PAN
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Publication number: 20230251229Abstract: The present disclosure provides a magnetostrictive guided wave sensor and a method for preparing magnetostrictive coating, relating to the field of magnetic functional materials and preparations thereof. The method includes: pretreating a surface of a test piece; and spraying magnetostrictive alloy powder on the pretreated surface of the test piece to form a magnetostrictive coating attached to the pretreated surface. In the magnetostrictive guided wave sensor and the method for preparing magnetostrictive coating according to the embodiments of the present disclosure, by spraying the magnetostrictive coating on the test piece, no coupling agent is required between the probe of the magnetostrictive coating sensor and the test piece, and the magnetostrictive coating can be formed on test pieces of any shape. In addition, the coating has a high bonding strength with the test piece, and has good tissue characteristics and magnetostrictive performance.Type: ApplicationFiled: January 10, 2023Publication date: August 10, 2023Inventors: Gongtian SHEN, Qingli QI, Yang ZHENG, Yilin YUAN, Qingchuan PAN, Zongjian ZHANG
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Patent number: 11674926Abstract: A magneto acoustic emission detection method for fatigue damage of ferromagnetic metal components: First, generating an excitation magnetic field by using a sine wave voltage signal, gradually increasing a loading voltage until a magneto acoustic emission signal of a bimodal envelope with an obvious tail peak is acquired, and taking a corresponding voltage peak value as a reference voltage; second, generating an excitation magnetic field by using a square wave voltage signal equal to or higher than a reference voltage, and acquiring a magneto acoustic emission signal with a T-shaped envelope; and third, calculating the average value of peak-to-peak values of the magneto acoustic emission signal in multiple periods to serve as a characteristic parameter, and enabling the characteristic parameter to have inflection point change along with the development of the initiation and expansion of the fatigue crack, and giving a timely early warning for the failure of the component.Type: GrantFiled: May 28, 2021Date of Patent: June 13, 2023Assignee: China Special Equipment Inspection and Research InstituteInventors: Gongtian Shen, Yongna Shen, Wenjun Zhang
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Patent number: 11421986Abstract: The disclosure discloses a method, apparatus and system for detecting multi-mode electromagnetic acoustic and magnetic flux leakage and a sensor. The method comprises: S102, receiving an operation instruction for detecting an object to be detected, the operation instruction is used for controlling a detection sensor to enter into any one or more of working modes as follows: magnetic flux leakage detection, ultrasonic bulk wave detection, ultrasonic guided wave detection and surface wave detection; S104, controlling the detection sensor to output a corresponding detection signal according to the operation instruction; and S106, detecting the object to be detected on the basis of the detection signal. The technical solution achieves a purpose of using one sensor to realize various detection modes, such as magnetic flux leakage and electromagnetic acoustic modes, reduces complexity and cost of a detection system, and improves detection efficiency.Type: GrantFiled: March 6, 2017Date of Patent: August 23, 2022Assignees: China Special Equipment Inspection Group Co., Ltd., CHINA SPECIAL EQUIPMENT INSPECTION AND RESEARCH INSTITUTEInventors: Gongtian Shen, Yang Zheng, Zongjian Zhang, Jidong Tan, Sujun Li
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Publication number: 20210372967Abstract: A magneto acoustic emission detection method for fatigue damage of ferromagnetic metal components: First, generating an excitation magnetic field by using a sine wave voltage signal, gradually increasing a loading voltage until a magneto acoustic emission signal of a bimodal envelope with an obvious tail peak is acquired, and taking a corresponding voltage peak value as a reference voltage; second, generating an excitation magnetic field by using a square wave voltage signal equal to or higher than a reference voltage, and acquiring a magneto acoustic emission signal with a T-shaped envelope; and third, calculating the average value of peak-to-peak values of the magneto acoustic emission signal in multiple periods to serve as a characteristic parameter, and enabling the characteristic parameter to have inflection point change along with the development of the initiation and expansion of the fatigue crack, and giving a timely early warning for the failure of the component.Type: ApplicationFiled: May 28, 2021Publication date: December 2, 2021Applicant: China Special Equipment Inspection and Research InstituteInventors: Gongtian Shen, Yongna Shen, Wenjun Zhang
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Patent number: 10962504Abstract: Disclosed are a method and device for compressing and reconstructing data. The method includes: disposing a transmitting EMAT array and a receiving EMAT array; exciting a Lamb wave, receiving the Lamb wave, subjecting the Lamb wave to narrowband filtering with the narrowband frequency, to form detecting data x(n); analysing the detecting data with a DFT; reconstructing original detecting data and calculating a reconstruction error according to the measurement vector and the recovery matrix by using a TLBO algorithm; optimizing measurement vector and recovery matrix; transmitting the measurement vector to a supervisory device.Type: GrantFiled: December 1, 2017Date of Patent: March 30, 2021Assignees: HUBEI UNIVERSITY OF TECHNOLOGY, TSINGHUA UNIVERSITY, CHINA SPECIAL EQUIPMENT INSPECTION AND RESEARCH INSTITUTE, EDDYSUN (XIAMEN) ELECTRONIC CO., LTD., HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Songling Huang, Xiaochun Song, Gongtian Shen, Wei Zhao, Junming Lin, Yihua Kang, Yu Zhang, Shen Wang
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Patent number: 10620163Abstract: A method for detecting a defect of a metal plate includes selecting N controllable emitting electromagnetic acoustic transducers EMATs as excitation transducers, and selecting M omnidirectionally receiving EMATs as receiving transducers, exciting an ultrasonic guided wave in a metal plate by a nth controllable emitting EMAT with a predetermined emission angle; determining whether each of M1 omnidirectionally receiving EMATs and the nth controllable emitting EMAT form a scattering group; for the scattering group, solving a position of a scattering point and a direction of a scattering side according to a distance between Tn and Rml, the emission angle and a travel time of the ultrasonic guided wave; performing a curve fitting on all the scattering points in directions of respective scattering sides to obtain a contour image of the defect.Type: GrantFiled: November 1, 2017Date of Patent: April 14, 2020Assignees: HUBEI UNIVERSITY OF TECHNOLOGY, TSINGHUA UNIVERSITY, CHINA SPECIAL EQUIPMENT INSPECTION AND RESEARCH INSTITUTE, EDDYSUN (XIAMEN) ELECTRONIC CO., LTD., HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Songling Huang, Xiaochun Song, Gongtian Shen, Wei Zhao, Junming Lin, Yihua Kang, Yu Zhang, Shen Wang
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Publication number: 20190376785Abstract: The disclosure discloses a method, apparatus and system for detecting multi-mode electromagnetic acoustic and magnetic flux leakage and a sensor. The method comprises: S102, receiving an operation instruction for detecting an object to be detected, the operation instruction is used for controlling a detection sensor to enter into any one or more of working modes as follows: magnetic flux leakage detection, ultrasonic bulk wave detection, ultrasonic guided wave detection and surface wave detection; S104, controlling the detection sensor to output a corresponding detection signal according to the operation instruction; and S106, detecting the object to be detected on the basis of the detection signal. The technical solution achieves a purpose of using one sensor to realize various detection modes, such as magnetic flux leakage and electromagnetic acoustic modes, reduces complexity and cost of a detection system, and improves detection efficiency.Type: ApplicationFiled: March 6, 2017Publication date: December 12, 2019Inventors: Gongtian SHEN, Yang ZHENG, Zongjian ZHANG, Jidong TAN, Sujun LI
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Patent number: 10175202Abstract: Provided is a test sensor using a magnetostrictively induced guided wave based on an open magnetic circuit, comprising an excitation coil, a receiving coil and a magnetic device, the magnetic device comprises multiple test modules circumferentially and uniformly disposed thereon so as to be absorbed to the outer side of a to-be-tested slender component, each test module comprises a housing, a permanent magnet and a magnetic plate, two adjacent housings are connected to each other via an adjusting device, the excitation coil and the receiving coil are disposed in the vicinity of the test module, and are coaxially fit on the outer side of the to-be-tested slender component, the excitation coil operates to generate induced voltage in the receiving coil after the sinusoidal alternating current is input, and a computer can determine whether a defect occurs in the to-be-tested slender component after receiving the induced voltage.Type: GrantFiled: April 7, 2016Date of Patent: January 8, 2019Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Xinjun Wu, Ming Cong, Gongtian Shen, Jie Chen
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Publication number: 20180172641Abstract: A method for detecting a defect of a metal plate includes selecting N controllable emitting electromagnetic acoustic transducers EMATs as excitation transducers, and selecting M omnidirectionally receiving EMATs as receiving transducers, exciting an ultrasonic guided wave in a metal plate by a nth controllable emitting EMAT with a predetermined emission angle; determining whether each of M1 omnidirectionally receiving EMATs and the nth controllable emitting EMAT form a scattering group; for the scattering group, solving a position of a scattering point and a direction of a scattering side according to a distance between Tn and Rm1, the emission angle and a travel time of the ultrasonic guided wave; performing a curve fitting on all the scattering points in directions of respective scattering sides to obtain a contour image of the defect.Type: ApplicationFiled: November 1, 2017Publication date: June 21, 2018Inventors: Songling HUANG, Xiaochun SONG, Gongtian SHEN, Wei ZHAO, Junming LIN, Yihua KANG, Yu ZHANG, Shen WANG
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Publication number: 20180164253Abstract: Disclosed are a method and device for compressing and reconstructing data. The method includes: disposing a transmitting EMAT array and a receiving EMAT array; exciting a Lamb wave, receiving the Lamb wave, subjecting the Lamb wave to narrowband filtering with the narrowband frequency, to form detecting data x(n); analysing the detecting data with a DFT; reconstructing original detecting data and calculating a reconstruction error according to the measurement vector and the recovery matrix by using a TLBO algorithm; optimizing measurement vector and recovery matrix; transmitting the measurement vector to a supervisory device.Type: ApplicationFiled: December 1, 2017Publication date: June 14, 2018Inventors: Songling HUANG, Xiaochun SONG, Gongtian SHEN, Wei ZHAO, Junming LIN, Yihua KANG, Yu ZHANG, Shen WANG
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Publication number: 20170269037Abstract: Provided is a test sensor using a magnetostrictively induced guided wave based on an open magnetic circuit, comprising an excitation coil, a receiving coil and a magnetic device, the magnetic device comprises multiple test modules circumferentially and uniformly disposed thereon so as to be absorbed to the outer side of a to-be-tested slender component, each test module comprises a housing, a permanent magnet and a magnetic plate, two adjacent housings are connected to each other via an adjusting device, the excitation coil and the receiving coil are disposed in the vicinity of the test module, and are coaxially fit on the outer side of the to-be-tested slender component, the excitation coil operates to generate induced voltage in the receiving coil after the sinusoidal alternating current is input, and a computer can determine whether a defect occurs in the to-be-tested slender component after receiving the induced voltage.Type: ApplicationFiled: April 7, 2016Publication date: September 21, 2017Inventors: Xinjun WU, Ming CONG, Gongtian SHEN, Jie CHEN