Investigation of damaged fibre-reinforced high speed rotors using in-situ measurement systems
In contrast to classical monolithic materials, fibre-reinforced composites offer excellent
properties such as very high specific strength and stiffness as well as high
freedom of design due to their anisotropy and gradual damage behaviour. Therefore,
they are predestined for new high-performance rotors, for example in turbomachinery
or centrifuges. Currently, problem-oriented design tools for the reliable
prediction on durability, reliability and energy efficiency of the rotor are still
lacking, however. The aim of the project is to find the fundamental relationship
between damage state and dynamic behaviour of fast rotating fibre-reinforced
rotors. This requires the development of novel measurement systems that allow
the simultaneous and in-situ measurement of damage state and dynamic behaviour.
For this purpose our unique Multipoint-Laser-Doppler-Distance measurement
system is to be extended to allow for a simultaneous measurement of the
global, damage-induced expansion of the rotor and the Eigen frequencies during
rotation at our partner “Institut für Leichtbau und Kunstofftechnik”. Furthermore,
measurement techniques for the volumetric measurement of local deformations
and damages will be qualified and applied for the first time at fast rotating structures
together with our partner “Klinisches Sensoring und Monitoring”.
Staff: J. Lich
Period: 08/16 - 07/19
01/22 - 06/24
Partner: Institut für Leichtbau und Kunstofftechnik - TU Dresden, Prof. Gude
Arbeitsgruppe Klinisches Sensoring und Monitoring – TU Dresden, Prof. Koch
LDD Sensor measuring the in-plane FRP rotor defor.m ation at 300 m/s with submicron uncertainty
K. Philipp, A. Filippatos, R. Kuschmierz, A. Langkamp, M. Gude, A. Fischer, J. Czarske, “Multi-sensor system
for in situ shape monitoring and damage identification of high-speed composite rotors”, Mechanical
Systems and Signal Processing, Volumes 76–77, August 2016, Pages 187-200
OCT images of internal FRP rotor structure, showing delamination (b) and cracks (e) (right) due to overload.
M. Gude, A. Filippatos, A. Langkamp, W. Hufenbach, R. Kuschmierz, A. Fischer, J. Czarske, “Model assessment
of a composite mock-up bladed rotor based on its vibration response and radial expansion”, Composite Structures 124:394-401, 2015.
K. Philipp, N. Koukourakis, R. Kuschmierz, C. Leithold, A. Fischer, J. Czarske, “Optical dynamic deformation
measurements at translucent materials”, Optics Letters 40(3):514 - 517, 2015, (DOI:
10.1364/OL.40.000514)
R. Kuschmierz, A. Filippatos, P. Günther, A. Langkamp, W. Hufenbach, J. Czarske, A. Fischer , “In-process, non-destructive, dynamic testing of high-speed polymer composite rotors”, Mechanical Systems andSignal Processing 54–55:325-335, 2015.