caa a22 4500 445371838 CHVBK 20180317142949.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s00340-010-4170-z doi (NATIONALLICENCE)springer-10.1007/s00340-010-4170-z Numerical shape optimization of photoacoustic resonators [Elektronische Daten] [B. Kost, B. Baumann, M. Germer, M. Wolff, M. Rosenkranz] The sensitivity of photoacoustic sensors strongly depends on the shape of the acoustical resonator. Up to now, mainly photoacoustic sensors consisting of a number of cylindrical parts have been investigated (cylinder cells, Hcells, Tcells etc.). In this paper, anumerical shape optimization of the resonator cell of photoacoustic sensors is described. The approach considers all shapes that can be represented by a number of axisymmetrical truncated cones which are connected in a continuous way. In addition, the geometry of the cell is subjected to certain constraints, e.g.  the laser beam should not be blocked during its passage through the cell. The purpose is to maximize the sensor's signal strength. The acoustic pressure at the position of the microphone represents the objective function and is calculated using an eigenmode expansion combined with a finite element calculation. The solution of a 17-dimensional nonlinear optimization problem is a resonator shape with a substantial quality improvement with reference to the well-known Hcell. Springer-Verlag, 2010 Photoacoustic nationallicence Gas sensor nationallicence Acoustic resonator nationallicence Shape optimization nationallicence Kost B. Department of Mechanical and Production Engineering, Institute of Physical Sensors, Hamburg University of Applied Sciences, Berliner Tor 21, 20099, Hamburg, Germany aut Baumann B. Department of Mechanical and Production Engineering, Institute of Physical Sensors, Hamburg University of Applied Sciences, Berliner Tor 21, 20099, Hamburg, Germany aut Germer M. Department of Mechanical and Production Engineering, Institute of Physical Sensors, Hamburg University of Applied Sciences, Berliner Tor 21, 20099, Hamburg, Germany aut Wolff M. Department of Mechanical and Production Engineering, Institute of Physical Sensors, Hamburg University of Applied Sciences, Berliner Tor 21, 20099, Hamburg, Germany aut Rosenkranz M. Department of Mechanical and Production Engineering, Institute of Physical Sensors, Hamburg University of Applied Sciences, Berliner Tor 21, 20099, Hamburg, Germany aut Applied Physics B Springer-Verlag 102/1(2011-01-01), 87-93 0946-2171 102:1<87 2011 102 340 https://doi.org/10.1007/s00340-010-4170-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-010-4170-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kost B. Department of Mechanical and Production Engineering, Institute of Physical Sensors, Hamburg University of Applied Sciences, Berliner Tor 21, 20099, Hamburg, Germany aut NATIONALLICENCE 700 1- Baumann B. Department of Mechanical and Production Engineering, Institute of Physical Sensors, Hamburg University of Applied Sciences, Berliner Tor 21, 20099, Hamburg, Germany aut NATIONALLICENCE 700 1- Germer M. Department of Mechanical and Production Engineering, Institute of Physical Sensors, Hamburg University of Applied Sciences, Berliner Tor 21, 20099, Hamburg, Germany aut NATIONALLICENCE 700 1- Wolff M. Department of Mechanical and Production Engineering, Institute of Physical Sensors, Hamburg University of Applied Sciences, Berliner Tor 21, 20099, Hamburg, Germany aut NATIONALLICENCE 700 1- Rosenkranz M. Department of Mechanical and Production Engineering, Institute of Physical Sensors, Hamburg University of Applied Sciences, Berliner Tor 21, 20099, Hamburg, Germany aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 102/1(2011-01-01), 87-93 0946-2171 102:1<87 2011 102 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer