We inspect inner surfaces of valve body spool bores down to 5 mm diameter for porosity defects, using an optical probe with ~50 ?m lateral resolution. The probe can also distinguish porosity from bump-type defects.
© 2010 The Optical Society
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.4630) Instrumentation, measurement, and metrology : Optical inspection
O. P. Kulkarni, M. N. Islam, and F. L. Terry, Jr., "Optical Technique for Porosity Detection inside Valve Body Spool Bores down to 5 mm Diameter," in Conference on Lasers and Electro-Optics 2010, OSA Technical Digest (CD) (Optical Society of America, 2010), paper AFA2.
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