SEMI-AUTOMATED MEASUREMENT OF INJECTION NOZZLES USING FIBER-OPTICAL LOW-COHERENCE INTERFEROMETRY

Christian Hill, Alexander Triebeneck, Robert Schmitt

Abstract

The roundness measurement of boreholes with diameters less than 500 microns is a challenge that cannot be addressed with conventional metrology such as tactile measurement. This paper presents a setup for semi-automated positioning and roundness measurement of boreholes with diameters down to 160 microns using fiber-optical probes and low-coherence interferometry. The results contribute to sophisticated nozzle design and testing of final parts such as common-rail diesel injection nozzles.

Keywords

roundness measurement, common-rail injection, fiber-optic sensor, micro-boreholes, low-coherence interferometry

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IMEKO-WC-2015-TC2-025.pdf

DOI

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IMEKO TC

TC2 - Photonics

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