scholarly journals Low-Cost Interrogation Technique for Dynamic Measurements with FBG-Based Devices

Sensors ◽  
2017 ◽  
Vol 17 (10) ◽  
pp. 2414 ◽  
Author(s):  
Camilo Díaz ◽  
Cátia Leitão ◽  
Carlos Marques ◽  
M. Domingues ◽  
Nélia Alberto ◽  
...  
Keyword(s):  
Low Cost ◽  
Dynamic Measurements ◽  
Interrogation Technique

Low cost interrogation technique for a FBG sensor for combined transverse and longitudinal strain measurement

2008 ◽  
Author(s):  
Z. Brodzeli ◽  
G. W. Baxter ◽  
S. F. Collins ◽  
J. Canning ◽  
M. Stevenson ◽  
...  
Keyword(s):  
Strain Measurement ◽  
Longitudinal Strain ◽  
Low Cost ◽  
Fbg Sensor ◽  
Interrogation Technique

Low-cost multiple FBG interrogation technique for static applications

2020 ◽  
Vol 45 (5) ◽  
pp. 1116 ◽  
Author(s):  
Dia Darwich ◽  
Ayman Youssef ◽  
Haitham Zaraket
Keyword(s):  
Low Cost ◽  
Interrogation Technique

A Novel Low Cost Slope Transducer for Static and Dynamic Measurements

2014 ◽  
Vol 984-985 ◽  
pp. 1023-1030
Author(s):  
B.S. Sathish ◽  
Pakkiri Thirusakthimurugan
Keyword(s):  
Inclination Angle ◽  
Strain Gauge ◽  
Low Cost ◽  
Industrial Applications ◽  
Measured Signal ◽  
Angular Deviation ◽  
Dynamic Measurements ◽  
Basic Approach ◽  
Unbalanced Voltage ◽  
Deviation Measurement

This paper presents the design and fabrication of a novel low cost transducer for angular deviation measurement, which replaces gyroscope in some of the Industrial applications where the gyroscope is found to be incompatible because of their size, weight, cost & complexity. This could be used to measure slope or an angular deviation under static and dynamic conditions. The basic approach of this work is to derive measured signal from a proposed transducer, proportional to the inclination of the platform with respect to ground. In this work, change in resistance of strain gauge due to the weight of a steel ball acting over it, produces an unbalanced voltage. This voltage is amplified and calibrated in terms of inclination angle. In this paper, a slope transducer has been designed and developed for measuring various inclinations with respect to horizontal earth’s surface.

Investigation of Low-Cost Interrogation Technique Based on Modulated Distributed Feedback Laser

2020 ◽  
Vol 20 (5) ◽  
pp. 2460-2466 ◽  
Author(s):  
Dia Darwich ◽  
Ayman Youssef ◽  
Marco Pisco ◽  
Haitham Zaraket
Keyword(s):  
Low Cost ◽  
Distributed Feedback ◽  
Distributed Feedback Laser ◽  
Interrogation Technique

Decomposition of the metastable beta titanium alloy Ti-15-3

1983 ◽  
Vol 41 ◽  
pp. 264-265
Author(s):  
Y. L. Chen ◽  
S. Fujlshiro
Keyword(s):  
Low Cost ◽  
High Strength ◽  
Alpha Phase ◽  
Thick Sheet ◽  
Omega Phase ◽  
Beta Titanium Alloy ◽  
Beta Titanium ◽  
Beta Matrix ◽  
Metastable Beta ◽  
Very High

Metastable beta titanium alloys have been known to have numerous advantages such as cold formability, high strength, good fracture resistance, deep hardenability, and cost effectiveness. Very high strength is obtainable by precipitation of the hexagonal alpha phase in a bcc beta matrix in these alloys. Precipitation hardening in the metastable beta alloys may also result from the formation of transition phases such as omega phase. Ti-15-3 (Ti-15V- 3Cr-3Al-3Sn) has been developed recently by TIMET and USAF for low cost sheet metal applications. The purpose of the present study was to examine the aging characteristics in this alloy.The composition of the as-received material is: 14.7 V, 3.14 Cr, 3.05 Al, 2.26 Sn, and 0.145 Fe. The beta transus temperature as determined by optical metallographic method was about 770°C. Specimen coupons were prepared from a mill-annealed 1.2 mm thick sheet, and solution treated at 827°C for 2 hr in argon, then water quenched. Aging was also done in argon at temperatures ranging from 316 to 616°C for various times.

Chromic Acid Etching of Polyethylene

1973 ◽  
Vol 31 ◽  
pp. 72-73
Author(s):  
J. D. Muzzy ◽  
R. D. Hester ◽  
J. L. Hubbard
Keyword(s):  
Chromic Acid ◽  
Low Cost ◽  
Acid Etching ◽  
Crystalline Morphology ◽  
Bulk Specimen ◽  
Morphological Studies ◽  
Perfect Form ◽  
Molecular Length ◽  
Lamellar Texture ◽  
Cost Studies

Polyethylene is one of the most important plastics produced today because of its good physical properties, ease of fabrication and low cost. Studies to improve the properties of polyethylene are leading to an understanding of its crystalline morphology. Polyethylene crystallized by evaporation from dilute solutions consists of thin crystals called lamellae. The polyethylene molecules are parallel to the thickness of the lamellae and are folded since the thickness of the lamellae is much less than the molecular length. This lamellar texture persists in less perfect form in polyethylene crystallized from the melt.Morphological studies of melt crystallized polyethylene have been limited due to the difficulty of isolating the microstructure from the bulk specimen without destroying or deforming it.

Glass Knife Geometry as Seen by the SEM

1971 ◽  
Vol 29 ◽  
pp. 454-455
Author(s):  
J. Temple Black
Keyword(s):  
Low Cost ◽  
Amorphous Material ◽  
Stress Concentrations ◽  
Basic Tool ◽  
Tool Materials ◽  
Optical Inspection ◽  
Surface Flaws ◽  
Slip Planes ◽  
Glass Knife ◽  
Diamond Knife

In ultramicrotomy, the two basic tool materials are glass and diamond. Glass because of its low cost and ease of manufacture of the knife itself is still widely used despite the superiority of diamond knives in many applications. Both kinds of knives produce plastic deformation in the microtomed section due to the nature of the cutting process and microscopic chips in the edge of the knife. Because glass has no well defined slip planes in its structure (it's an amorphous material), it is very strong and essentially never fails in compression. However, surface flaws produce stress concentrations which reduce the strength of glass to 10,000 to 20,000 psi from its theoretical or flaw free values of 1 to 2 million psi. While the microchips in the edge of the glass or diamond knife are generally too small to be observed in the SEM, the second common type of defect can be identified. This is the striations (also termed the check marks or feathers) which are always present over the entire edge of a glass knife regardless of whether or not they are visable under optical inspection. These steps in the cutting edge can be observed in the SEM by proper preparation of carefully broken knives and orientation of the knife, with respect to the scanning beam.

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