Mechanical Sciences:  Mixed Mode Fracture at Bimaterial     Interfaces
{'Code': '07030000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CMMI', 'LongName': 'Div Of Civil, Mechanical, & Manufact Inn'}}
{'SignBlockName': 'Barbara Weatherly', 'PO_EMAI': 'bweather@nsf.gov', 'PO_PHON': '7032927384'}
The objective of this research project is to develop the experimental           tools for a direct evaluation of the fracture processes that occur in           the separation of dissimilar materials along their interface, with a            view to understanding the delamination phenomenon of layered solids. In         particular, local fracture mode interactions and the viscoelastic               nature of the adhesive or matrix materials will be examined for their           influence on the propagation rates of cracks that are constrained to            grow along the interface between dissimilar materials.  Interpretation          of thefracture processes will be based on direct observation and                measurement of the crack face displacements normal to and tangential to         the interface in the region of the crack front, using optical                   interferometry.  A specially constructed loading device will be used to         apply displacements normal and tangential to the interface, to the same         degree of accuracy as the measurements of crack flank displacements.            Such direct evaluations will then be used to determine the validity of          linearized stress analyses (for static cracks) and local fracture               criteria that govern the initiation and steady propagation of interface         cracks.
{'FirstName': 'Kenneth', 'LastName': 'Liechti', 'PI_MID_INIT': 'M', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Kenneth M Liechti', 'EmailAddress': 'kml@mail.utexas.edu', 'NSF_ID': '000295221', 'StartDate': '12/01/1984', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of Texas at Austin', 'CityName': 'AUSTIN', 'ZipCode': '787121139', 'PhoneNumber': '5124716424', 'StreetAddress': '110 INNER CAMPUS DR', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Texas', 'StateCode': 'TX', 'CONGRESSDISTRICT': '25', 'CONGRESS_DISTRICT_ORG': 'TX25', 'ORG_UEI_NUM': 'V6AFQPN18437', 'ORG_LGL_BUS_NAME': 'UNIVERSITY OF TEXAS AT AUSTIN', 'ORG_PRNT_UEI_NUM': None}
{'Name': None, 'CityName': None, 'StateCode': None, 'ZipCode': None, 'StreetAddress': None, 'CountryCode': None, 'CountryName': None, 'StateName': None, 'CountryFlag': None, 'CONGRESSDISTRICT': None, 'CONGRESS_DISTRICT_PERF': '""'}
{'Code': '144100', 'Text': 'MECHANICS'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1984&All=true', 'xml': '8402064.xml'}