{"@type": "dcat:Dataset", "accessLevel": "public", "accrualPeriodicity": "irregular", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "Chetan Kulkarni", "hasEmail": "mailto:chetan.s.kulkarni@nasa.gov"}, "description": "Prognostics technologies determine the health state of a system and predict its remaining useful life. With this information, operators are able to make maintenance-related decisions, thus effectively streamlining operational and mission level activities. Experimentation on testbeds representative of\r\ncritical systems is very useful for the maturation of prognostics technology; precise emulation of actual fault conditions on such a testbed further validates these technologies. In this paper we\r\npresent the development of a pneumatic valve testbed, initial experimental results and progress towards the maturation and validation of component-level prognostic methods in the context\r\nof cryogenic refueling operations. The pneumatic valve testbed allows for the injection of time-varying leaks with specified damage progression profiles in order to emulate common valve faults. The pneumatic valve testbed also contains a battery used to power some pneumatic components, enabling the study of the effects of battery degradation on the operation of the valves.", "distribution": [{"@type": "dcat:Distribution", "description": "KulkarniEtAl-ValveTestbed-Autotestcon2014", "downloadURL": "https://c3.nasa.gov/dashlink/static/media/publication/KulkarniEtAl-ValveTestbed-Autotestcon2014.pdf", "format": "PDF", "mediaType": "application/pdf", "title": "KulkarniEtAl-ValveTestbed-Autotestcon2014.pdf"}], "identifier": "DASHLINK_948", "issued": "2016-02-23", "keyword": ["ames", "dashlink", "nasa"], "landingPage": "https://c3.nasa.gov/dashlink/resources/948/", "modified": "2025-03-31", "programCode": ["026:029"], "publisher": {"@type": "org:Organization", "name": "Dashlink"}, "title": "A Testbed for Implementing Prognostic Methodologies on Cryogenic Propellant Loading Systems"}