Ultrasonic NDE of Nonlinear Viscoelastic Media
{'Code': '07030000', 'Directorate': {'LongName': 'Directorate For Engineering'}, 'Division': {'LongName': 'Div Of Civil, Mechanical, & Manufact Inn'}}
{'SignBlockName': 'Jina Reed'}
The purpose of this Expedited Award for Novel Research (EANR) is to             explore the use of the ultrasonic nondestructive evaluation (NDE)               technique for determining the nonlinear viscoelastic properties of              thermoplastics.  This seemingly obvious application of ultrasonic NDE           to nonlinear viscoelastic materials has never been attempted in the             past due to the nonuniqueness of the ultrasonic parameters which are            obtained through solving the inverse problem.  Recent advances in the           modeling of nonlinear viscoelastic materials as well as the advances            in numerical analysis of nonlinear problems now provide the                     opportunity, possibly prematurely, for the proposed research.  Should           this exploratory study demonstrate the feasibility of using                     ultrasonic NDE techniques on nonlinear viscoelastic materials, it               will open a new research field in  process control, inspection and              reliability assessment of commercially popular thermoplastics.
{'FirstName': 'James', 'LastName': 'Williams, Jr.', 'EmailAddress': 'jhwill@mit.edu', 'StartDate': '09/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Massachusetts Institute of Technology', 'CityName': 'Cambridge', 'ZipCode': '021394301', 'PhoneNumber': '6172531000', 'StreetAddress': '77 MASSACHUSETTS AVE', 'CountryName': 'United States', 'StateName': 'Massachusetts', 'StateCode': 'MA'}
{'Code': '1441', 'Text': 'MECHANICS'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1988&All=true', 'xml': '8819529.xml'}