Theoretical and Experimental Investigation of the Inelasti- city and Failure of Ceramics
{'Code': '07030000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CMMI', 'LongName': 'Div Of Civil, Mechanical, & Manufact Inn'}}
{'SignBlockName': 'Devendra P. Garg', 'PO_EMAI': None, 'PO_PHON': None}
Research will be conducted into the inelastic deformation and failure           of ceramics in a combined theoretical and experimental investigation.           The research will address improved understanding of the development of          microcrack structures and corresponding reduction in stiffness of               materials.  Constitutive equations will be developed for the evolution          of damage due to microcrack initiation, growth, and coalescence.  Sub-          microsecond duration plane-wave experiments will be conducted to verify         the theoretical models.  The impacted ceramics specimens will be                recovered and examined after impact to characterize the development of          microcracks.  An improved understanding of microcrack development in            ceramics and the subsequent effect on stiffness will be applicable to a         wide variety of strength/stiffness problems in ceramics.
[{'FirstName': 'Michael', 'LastName': 'Ortiz', 'PI_MID_INIT': None, 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Michael Ortiz', 'EmailAddress': 'ortiz@aero.caltech.edu', 'NSF_ID': '000440432', 'StartDate': '03/15/1987', 'EndDate': None, 'RoleCode': 'Co-Principal Investigator'}, {'FirstName': 'Rodney', 'LastName': 'Clifton', 'PI_MID_INIT': 'J', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Rodney J Clifton', 'EmailAddress': 'clifton@engin.brown.edu', 'NSF_ID': '000403504', 'StartDate': '03/15/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}]
{'Name': 'Brown University', 'CityName': 'PROVIDENCE', 'ZipCode': '029129100', 'PhoneNumber': '4018632777', 'StreetAddress': '1 PROSPECT ST', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Rhode Island', 'StateCode': 'RI', 'CONGRESSDISTRICT': '01', 'CONGRESS_DISTRICT_ORG': 'RI01', 'ORG_UEI_NUM': 'E3FDXZ6TBHW3', 'ORG_LGL_BUS_NAME': 'BROWN UNIVERSITY', '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': '1441', 'Text': 'MECHANICS'}, {'Code': '9120', 'Text': 'CROSS-DIRECTORATE PROGRAMS'}]
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1986&All=true', 'xml': '8617453.xml'}