Measurement of real-time gigacycle fatigue through real-time interferometry

0449278 - ÚPT 2016 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Lazar, Josef - Holá, Miroslava - Hrabina, Jan - Číp, Ondřej
Measurement of real-time gigacycle fatigue through real-time interferometry.
Sborník příspěvků multioborové konference LASER 55. Brno: Ústav přístrojové techniky AV ČR, 2015, s. 38-39. ISBN 978-80-87441-16-9.
[LASER 55. Třešť (CZ), 21.10.2015-23.10.2015]
Grant CEP: GA ČR GB14-36681G; GA TA ČR TA02010711; GA TA ČR TA01010995; GA TA ČR TE01020233; GA MŠMT(CZ) LO1212; GA MŠMT ED0017/01/01
Institucionální podpora: RVO:68081731
Klíčová slova: optical metrology * metallurgy
Kód oboru RIV: BH - Optika, masery a lasery

We present an interferometric method for measurement of strain induced deformation of metal samples in experiments inducing high-cycle fatigue. The motivation is to get real-time information about the deformation of a metal sample under test, its elongation imposed by fast vibrating actuator. Fatigue of materials is a process of degradation of a material due to repeated application of forces which includes nucleation and propagation of cracks and leads to the failure of the component. It may appear in all parts of machines or structures which rotate, vibrate, are repeatedly loaded, are subjected to temperature gradients etc., so statistically, fatigue is implied in about 80% of all industrial failures.
Trvalý link: http://hdl.handle.net/11104/0251291