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Sunday, August 2, 2020 | History

3 edition of Development of an optical fiber interferometer for detection of surface flaws in aluminum found in the catalog.

Development of an optical fiber interferometer for detection of surface flaws in aluminum

Development of an optical fiber interferometer for detection of surface flaws in aluminum

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  • 35 Currently reading

Published by George C. Marshall Space Flight Center, National Aeronatics and Space Administration in Huntsville, Ala .
Written in English

    Subjects:
  • Interferometers.,
  • Aluminum -- Testing.

  • Edition Notes

    Statementprepared by John A. Gilbert.
    SeriesNASA contractor report -- NASA CR-186180.
    ContributionsGeorge C. Marshall Space Flight Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15382514M

    Micro-fiber based refractometric sensors are currently in the spotlight of research as basic functional elements for physical 1,2,3, chemical 4,5 and biological 6,7 sensing. Due to the small dimension for Cited by: 7. The strength and static fatigue behavior of glass optical waveguide fibers were investigated. Bimodal distributions of surface flaws were generally observed, and several types of defects were identified. Cited by: 4.

    1. Introduction. Sensors based on surface plasmon have been widely used to detect biological and chemical analytes, environmental control, and biomedical applications, among others [1–6].Their main Cited by: The Indars Interferometer enables both elements, the part to be measured and the reference optical flat, to be kept parallel to each other at a distance on the order of coherence length of a light wave. Indars .

    Development and characterisation of a novel optical surface defect detection system By Mohammad Abu Hana Mustafa Kamal The objective o f this project was to develop and characterise a novel optical . L. Shi et al: Measurement Mechanism and Experimental Research of the all Fiber Michelson Interferometer 29 Figure 5: The deformation testing curve collected by digital Table 1: the wave Author: Lin Shi, Zhen Yue, Yanqun Tong, Dongmin Li, Wei Sun, Jun Huang.


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Development of an optical fiber interferometer for detection of surface flaws in aluminum Download PDF EPUB FB2

Get this from a library. Development of an optical fiber interferometer for detection of surface flaws in aluminum. [John A Gilbert; George C. Marshall Space Flight Center.]. In this effort a single mode optical fiber interferometer (OFI) was used to sense the presence and form of Rayleigh waves traveling along the surface of a steel test bar at a velocity of nearly 3mm/s.

Interferometry has been a time-honored technique for surface topography measurement. Interferometric measurements of surface shape are relative measurement techniques in which the shape of a known Author: Dahi Ghareab Abdelsalam, Baoli Yao. When the first edition of Optical Interferometry was published, interferometry was regarded as a rather esoteric method of making measurements, largely confined to the laboratory.

Today, however, 5/5(1). Advanced Search >. Home > Proceedings > Volume > Article > Proceedings > Volume > ArticleCited by: 1. In this paper, an extrinsic Fabry–Perot interferometer (EFPI) has been demonstrated for strain measurements.

A monochromatic light source with a wavelength of nm is propagated into Cited by: 3. CHAPTER 21 INTERFEROMETERS P. Hariharan Di y ision of Applied Physics CSIRO Sydney, Australia 2 1. 1 GLOSSARY A area C ratio of peaks to valleys d thickness F finesse FSR free File Size: 2MB.

A fiber-optic Fizeau interferometer with active path length stabilization has been developed to monitor broadband ultrasonic displacements. Absolute displacement sepsitivity of 50 pm has been obtained.

Phase Detection Change in length due to mechanical or thermal strain will cause a phase change (Mach-Zehnder interferometer) Provides extremely high resolution Noise issues such as phase noise and. A novel Fiber Optic Sound Sensor (FOSS) for detecting military targets was presented.

The principle of the FOSS was based on Michelson interferer technology and the transducer was made of a plate. George T. Large, M.S.E., “Development of an optical fiber interferometer for detection of surface flaws in aluminum,” Mechanical Engineering, University of Alabama in Huntsville, Wei Su, M.S.E.

The ProView from NorthLab is an interferometer for the measurement and inspection of fiber end surfaces with cladding diameters of µm to µm. Designed specifically for production lines. Interferometers are normally operated in environment-controlled optical laboratories because vibrations will induce errors in measurement results.

In order to extend the application of interferometry to shop Cited by: 1. Optical Surface Quality Determining the surface quality of a critical component, the deviation from the intended shape whether flat, spherical, etc. is crucial to high-precision manufacturing.

Traditional. Introduction. Optical fiber interferometers have long been investigated for highly sensitive detection of a large quantity of physical parameters owing to the extremely high level of sensitivity.The most Author: Shuna Li, Shuna Li, Jiansheng Liu, Zheng Zheng, Xin Li.

In summary, the liquid level sensor based on an optical fiber Michelson interferometer with core-offset structure shows a higher linearity and sensitivity in comparison of other liquid level sensors with Cited by: 2.

The fiber point diffraction technology is applied in interferometer to measure optical surface with high precision. The wavefront diffracted from the single mode fiber with microns core diameter can be Author: Liang Nie, Jun Han, Xu Jiang. A tapered fiber localized surface plasmon resonance (LSPR) sensor is demonstrated for refractive index sensing and label-free biochemical detection.

The sensing strategy relies on the interrogation of the. An example is described in which optical fiber interferometers are used for measurements of heat flux and unsteady temperature in turbomachinery test rigs. Examples of extrinsic systems are those in Cited by: 1. An improved optical inspection system for detecting flaws on a diffractive surface containing surface patterns includes: an ultraviolet illumination means for illuminating a region on the diffractive surface Cited by:.

A highly stabilized multiplexed fibre interferometer for on-line surface metrology was reported by our previous research work 10 Two Michelson fibre interferometers were combined and share most of .The DAISI-MT (Digital Automated Interferometer for Surface Inspection) is a measuring instrument for multifiber connector end face geometry designed based on the same concept as the auto-focus, auto .Various methods of determining surface defects are being used in automated industrial manufacturing environments.

This work presents the design and development of a new high-speed photoelectronic .