Improvements and applications of non-contacting interferometry /
(FTI/GRIN). The effects of the increased gap between the
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1994.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (FTI/GRIN). The effects of the increased gap between the addition of the GRIN lens was investigated. The applied to the existing interferometric system and tested. between the existing system (FTI) and the modified system Biconical Taper Couplers which act as beamsplitters for damage. detection system, also consisting of two channels. The detector tip and the test surface made possible by the development and application of a two channel, fiber optic, Generation of the ultrasonic signals is usually from a hardness indentor, the FTI/GRIN was able to detect the interferometer from a single laser beam input. These interferometer signals are recorded with a high speed photo- interferometer system was applied to hot pressed silicon interferometer. The existing interferometer system consists measurements of material characteristics with ultrasonic methods. Both ultrasonic velocity and scatter were used to microcracks caused by grinding of a ceramic plate. However, nitride to investigate the potential use of these obtain the properties of the ceramic material. An of an Argon laser, single mode fiber, and an array of Fused often used in the ultrasonic investigation of materials. optical fiber systems and produce a dual channel research reported here, a Graded Index (GRIN) lens was system is well suited to detect the broadband frequencies The research described in this thesis involves the The testing consisted of several comparison experiments thermal pulse created by a Q-switched ND:YAG laser. In the unsuccessful attempt was made to identify and characterize when more severe microcracking was introduced with a Knoop |
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| Item Description: | "Major subject: Mechanical Engineering". Vita. |
| Physical Description: | xiv, 179 leaves : illustrations ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references. |