Detecting of bonding defects using an SHM fiber-optics distributed sensors system in typical wing spar coupon

2020 ◽  
Author(s):  
L. Pellone ◽  
M. Ciminello ◽  
B. Galasso ◽  
U. Mercurio ◽  
G. Apuleo ◽  
...  
Keyword(s):  
Fiber Optics ◽  
Distributed Sensors ◽  
Wing Spar

Designing high-resolution slow scan CCD-based TEM camera systems

1992 ◽  
Vol 50 (2) ◽  
pp. 946-947
Author(s):  
James F. Mancuso ◽  
William B. Maxwell ◽  
Russell E. Camp ◽  
Mark H. Ellisman
Keyword(s):  
Fiber Optics ◽  
Ccd Camera ◽  
High Energy ◽  
Phosphor Layer ◽  
X Ray ◽  
Light Production ◽  
Camera Systems ◽  
X Ray Imaging ◽  
Electron Image ◽  
Scintillating Fiber

The imaging requirements for 1000 line CCD camera systems include resolution, sensitivity, and field of view. In electronic camera systems these characteristics are determined primarily by the performance of the electro-optic interface. This component converts the electron image into a light image which is ultimately received by a camera sensor.Light production in the interface occurs when high energy electrons strike a phosphor or scintillator. Resolution is limited by electron scattering and absorption. For a constant resolution, more energy deposition occurs in denser phosphors (Figure 1). In this respect, high density x-ray phosphors such as Gd2O2S are better than ZnS based cathode ray tube phosphors. Scintillating fiber optics can be used instead of a discrete phosphor layer. The resolution of scintillating fiber optics that are used in x-ray imaging exceed 20 1p/mm and can be made very large. An example of a digital TEM image using a scintillating fiber optic plate is shown in Figure 2.

Embedded training in the FOG-M (fiber optics guided missile)

1984 ◽  
Author(s):  
Dorothy L. Finley ◽  
Irving N. Alderman ◽  
M. Sue Bogner ◽  
Nancy B. Mitchell
Keyword(s):  
Fiber Optics

Selected Major Issues in Instructional/Communication Technology

1993 ◽  
Vol 10 (3) ◽  
pp. 312-325
Author(s):  
Dilnawaz A. Siddiqui
Keyword(s):  
Instructional Technology ◽  
Fiber Optics ◽  
Communication Technology ◽  
Instructional Communication ◽  
Human Beings ◽  
Media Communication ◽  
Satellite Television ◽  
Powerful Learning ◽  
Global Power ◽  
Physical Limitations

Instructional/Communication Technology has come to mean, in a narrowsense, media hardware or a set of tools enabling human beings toovercome their physical limitations. Etymologically, it means one or moretechniques, both concrete and abstract, that help human beings solveproblems. By extension, instructional technology (IT) means all tools atour disposal for facilitating learning. Tickton (1971) defines the purporeof IT as making "education more productive and more individual, to giveinstruction a more scientific base, and to make instruction more powerful,learning more immediate, and access more equal." While the technologyitself might be neutral as a medium and as a means of instructional communication,it is the natw of its use, in terms of timely and appropriatemessages, that is the key to understanding its consequences. It is this finalfactor upon which society needs to focus.The tecent combination of computer, video, fiber optics, satellite television,and other state-of-the-art technologies has enabled a small groupto control the lives of billions. Instructional technology has also Meritedits own share of this instantaneous global power. As a result traditionalboundaries between IT and mass media communication have blurred somuch that IT sounds like a misnomer.It has now become a platitude to say that the nation that controlledthe sealanes in the nineteenth century, or that controlled the airways inthe twentieth century, controlled the whole world. In the twenty-first century,it appears that whoever controls the airwaves will control the worldand whatever is beyond it. Thus the most explosive confluence of ...

Analog Fiber Optics: Pragmatic Considerations Beyond the Textbook

1983 ◽  
Author(s):  
E. L. Althouse ◽  
D. M. Kopp ◽  
R. G. Trgina
Keyword(s):  
Fiber Optics

DESIGN AND MANUFACTURING PROCESS OF A UAV COMPOSITE WING SPAR

2018 ◽  
Author(s):  
Pablo M. N. Araujo ◽  
Thiago R. Costa ◽  
Eduardo C. Silva
Keyword(s):  
Manufacturing Process ◽  
Design And Manufacturing ◽  
Wing Spar ◽  
Composite Wing
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