<p>A
previously designed lens system is constructed and characterized for possible
application to engine diagnostics and 3D reconstructions of combusting flows. Since
optical engines cannot be operated at the same conditions as a production
engine, optical access to a production engine, with minimum changes in the
engine geometry is necessary for developing a better understanding of the
in-cylinder processes. The application of a probe designed to fit in the
pressure transducer port of a diesel engine was demonstrated in this work. Measurement
of various optical parameters established the ability of the lens system to
have a good resolution over the entire stroke length of the cylinder. The
temperature analysis of the probe and lens system confirmed its ability to
withstand the high-temperature conditions in the engine cylinder head. The lens
system design was coupled with imaging fibers to transmit images from the image
plane of the probe to a high-speed camera located at a safe distance from the
combusting environment. Due to the robust design of the probe and its
compatibility with an imaging fiber, the probe was identified to be a good
alternative as an inexpensive lens system for tomography in challenging
environments. To validate its use, 3D reconstruction of a sewing pin using a
range of views was demonstrated. Parameters affecting the reconstructions were
identified and optimized to obtain high-quality reconstructions. </p>
| Identifer | oai:union.ndltd.org:purdue.edu/oai:figshare.com:article/9867215 |
| Date | 16 October 2019 |
| Creators | Vaishnavi Anand Radkar (7392908) |
| Source Sets | Purdue University |
| Detected Language | English |
| Type | Text, Thesis |
| Rights | CC BY 4.0 |
| Relation | https://figshare.com/articles/Characterization_and_Application_of_a_Lens_System_Design_for_Engine_Diagnostics_and_3D_Reconstructions/9867215 |
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