Constipation Gastric Cancer Gastritis and Duodenitis Infectious Liver Disease Liver Cancer
Languages:
Chinese English Spanish
Description:
Dr. Wong graduated from the New York University School of Medicine in 1999. He works in New York, NY and specializes in Gastroenterology. Dr. Wong is affiliated with New York Presbyterian Lower Manhattan Hospital.
Weidong Zhu - Elkridge MD, US Guangyao Xu - Baltimore MD, US Nengan Zheng - Baltimore MD, US Benjamin Emory - Baltimore MD, US Chun Wong - Lubbock TX, US
International Classification:
G01H001/14 G01M007/08
US Classification:
073579000, 073012010, 702056000
Abstract:
A system and method for detecting structural damage is provided that utilizes a general order perturbation methodology involving multiple perturbation parameters. The perturbation methodology is used iteratively in conjunction with an optimization method to identify the stiffness parameters of structures using natural frequencies and/or mode shape information. The stiffness parameters are then used to determine the location and extent of damage in a structure. A novel stochastic model is developed to model the random impact series produced manually or to generate a random impact series in a random impact device. The random impact series method or the random impact device can be used to excite a structure and generate vibration information used to obtain the stiffness parameters of the structure. The method or the device can also just be used for modal testing purposes. The random impact device is a high energy, random, and high signal-to-noise ratio system.
Weidong Zhu - Elkridge MD, US Guangyao Xu - Baltimore MD, US Nengan Zheng - Baltimore MD, US Benjamin Haynes Emory - Baltimore MD, US Chun Nam Wong - Lubbock TX, US
International Classification:
G01N 29/12 G01N 29/46
US Classification:
702 39, 702 56
Abstract:
A system and method for detecting structural damage is provided that utilizes a general order perturbation methodology involving multiple perturbation parameters. The perturbation methodology is used iteratively in conjunction with an optimization method to identify the stiffness parameters of structures using natural frequencies and/or mode shape information. The stiffness parameters are then used to determine the location and extent of damage in a structure. A novel stochastic model is developed to model the random impact series produced manually or to generate a random impact series in a random impact device. The random impact series method or the random impact device can be used to excite a structure and generate vibration information used to obtain the stiffness parameters of the structure. The method or the device can also just be used for modal testing purposes. The random impact device is a high energy, random, and high signal-to-noise ratio system.
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