Fatigue Reliability of Structures Sujected to Earthquake    Loading
{'Code': '07030000', 'Directorate': {'Abbreviation': 'ENG', 'LongName': 'Directorate For Engineering'}, 'Division': {'Abbreviation': 'CMMI', 'LongName': 'Div Of Civil, Mechanical, & Manufact Inn'}}
{'SignBlockName': 'Shih-Chi Liu', 'PO_EMAI': None, 'PO_PHON': None}
The design of many engineered structures is governed by considerations          of material fatigue failure.  For example, offshore structures must             withstand continuous oscillatory wind and wave loads.  Under extreme            conditions, the loading may fluctuate significantly over short time             periods.  Substantial damage, and most failures, are caused by these            short-time loads.                                                                                                                                               Existing methodologies for evaluating the probability of fatigue failure        assume that the loading process is stationary (that is, the loading             characteristics do not change with time), which may not be appropriate          for extreme loading conditions.  This study develops a reliability model        for fatigue failure that accommodates nonstationary loading processes.          The model describes the response of the structure to nonstationary loads        as a random process.  The crossing statistics of this response process          are calculated in order to determine the expected number of load                reversals; the accumulated damage resulting from these load reversals is        determined using the methods of fracture mechanics.  Finally, the               estimated damage can be compared to a limiting criteria so as to                calculate the probability of failure.                                                                                                                           This methodology improves upon existing procedures for the design of            structures prone to fatigue failure under nonstationary loads, such as          those caused by an earthquake.  This information can also be used to            specify rational design, inspection, maintenance, and                           repair schemes for many types of structures.
{'FirstName': 'Richard', 'LastName': 'Nielsen', 'PI_MID_INIT': 'J', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Richard J Nielsen', 'EmailAddress': 'rnielsen@uidaho.edu', 'NSF_ID': '000426130', 'StartDate': '08/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Regents of the University of Idaho', 'CityName': 'MOSCOW', 'ZipCode': '838449803', 'PhoneNumber': '2088856651', 'StreetAddress': '875 PERIMETER DR', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Idaho', 'StateCode': 'ID', 'CONGRESSDISTRICT': '01', 'CONGRESS_DISTRICT_ORG': 'ID01', 'ORG_UEI_NUM': 'QWYKRJH5NNJ3', 'ORG_LGL_BUS_NAME': 'REGENTS OF THE UNIVERSITY OF IDAHO', 'ORG_PRNT_UEI_NUM': None}
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{'Code': '149800', 'Text': 'STRUCTURES II'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8707789.xml'}