Results 151 to 160 of about 189,979 (289)

Fiber-optic projected-fringe digital interferometry [PDF]

open access: yes
A phase-stepped projected-fringe interferometer was developed which uses a closed-loop fiber-optic phase-control system to make very accurate surface profile measurements.
Beheim, Glenn, Mercer, Carolyn R.
core   +1 more source

Optical measurement methods in thermogasdynamics [PDF]

open access: yes
A review is presented of a number of optical methods of flow measurements. Consideration is given to such spectroscopic methods as emission and absorption techniques, electron beam-stimulated fluorescence, and light scattering - Rayleigh, Raman and Mie -
Becker, M.   +3 more
core   +1 more source

Holographic nondestructive tests performed on composite samples of ceramic-epoxy-fiberglass sandwich structure [PDF]

open access: yes
When a hologram storing more than one wave is illuminated with coherent light, the reconstructed wave fronts interfere with each other or with any other phase-related wave front derived from the illuminating source. This multiple wave front comparison is
Kurtz, R. L., Liu, H. K.
core   +1 more source

Evaluation and application of a new interferometry technique for compressible flow research [PDF]

open access: yes
A new method for obtaining large scale interferograms of flow fields in real time was investigated. The method was based on the point diffraction interferometry technique.
Bachalo, William D., Houser, Michael C.
core   +1 more source

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