TY - JOUR A1 - Hille, Falk A1 - Sowietzki, D. A1 - Makris, R. T1 - Luminescence-based early detection of fatigue cracks T2 - Materials Today: Proceedings N2 - Classic non-destructive fatigue crack detection methods reveal the state of the fatigue damage evolution at the moment of application, generally not under operational conditions. The here introduced crack luminescence method realizes a clear visibility of the occurred and growing crack in loaded components during operation. Different established experiments show that due to the sensitive coating a crack Formation can be detected even in early stage under the premise the crack reached the surface. The coating consists of two layers with different properties and functions. The bottom layer emits light as fluorescence under UV radiation. The top layer covers the fluorescing one and prevents the emitting of light in case of no damage at the surface. In case of surface crack occurrence, the luminescent light is clearly noticeable by visual observations and also by standard camera equipment which makes automated crack detection possible as well. It is expected that crack luminescence can increase structural safety as well as reduce costs and time for inspections and preventive maintenance. PB - Elsevier CY - Amsterdam KW - Coating KW - Fatigue KW - Crack damage detection KW - Luminescence PY - 2020 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/51051 AN - OPUS4-51051 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-510517 SN - 2214-7853 SP - 1 EP - 5 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany