Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Frederick Seng"'
Autor:
Greyson Hodges, Alexander Noevere, Ivann Velasco, Drew Hackney, Frederick Seng, Stephen Schultz, Kara Peters, Mark Pankow
Publikováno v:
Optical Fiber Technology. 73:103043
Autor:
Ivann Velasco, Christina Hurlbut, Alec M. Hammond, LeGrand Shumway, Frederick Seng, Jonathan D. Blotter, Stephen M. Schultz
Publikováno v:
Applied Acoustics. 136:29-35
A new, low-cost modal analysis method, capable of extracting the structural modes, verifying numeric simulations, and fine-tuning musical instruments is presented. This method uses fiber Bragg gratings and is demonstrated by reconstructing the mode s
Autor:
Alec M. Hammond, Frederick Seng, Stephen M. Schultz, LeGrand Shumway, Helaman Johnston, Chad Josephson, Rex King, Nikola Stan, Ivann Velasco
Publikováno v:
Journal of Lightwave Technology. 35:669-676
Fiber optic electric field sensors are ideal for characterizing the electric field in many different systems. Unfortunately, many of these systems produce one or more noise types, like vibrational noise which contribute to a harsh sensing environment
Autor:
Frederick Seng, Stephen M. Schultz, Alec M. Hammond, Kara Peters, Tyler Goode, Ivann Velasco, Mark Pankow, Alexander Noevere, Drew Hackney
Publikováno v:
International Journal of Impact Engineering. 150:103800
A single optical fibre sensor is used to measure the dynamics of an impact. The method consists of sewing the optical fibre onto a woven Kevlar layer and placing it between the shoot pack and backing material. The measurement is accomplished by using
Publikováno v:
Optical Fiber Technology. 60:102356
This research demonstrates that fiber Bragg grating (FBG) strain sensors can survive and provide useful strain information when integrated into a woven fabric subjected to ballistic impact testing. In this work, FBGs were integrated into a single-lay
Publikováno v:
Optical Fiber Technology. 59:102334
In previous experiments, the authors demonstrated that strain values collected from fiber Bragg gratings (FBG) integrated into a single layer of Kevlar fabric, placed between a soft armor test specimen and backing material, could be related to the ti
Autor:
Kara Peters, Steven Schultz, Drew Hackney, Frederick Seng, Tyler Goode, Mark Pankow, George Shoemaker
Publikováno v:
26th International Conference on Optical Fiber Sensors.
The strain on a single FBG sensor, integrated into a single layer of Kevlar mounted behind a Kevlar soft body armor coupon, is measured throughout a ballistic impact event. The strain is collected through high-speed, full-spectral interrogation of th
Autor:
Zhenchao Yang, Rex King, Karl F. Warnick, Frederick Seng, Stephen M. Schultz, Alec M. Hammond, Nikola Stan, LeGrand Shumway
Publikováno v:
Applied optics. 56(17)
This work introduces a passive dipole antenna integrated into the packaging of a slab-coupled optical sensor to enhance the directional sensitivity of electro-optic electric field measurements parallel to the fiber axis. Using the passive integrated
Autor:
LeGrand Shumway, Drew Hackney, Frederick Seng, Alec M. Hammond, Stephen M. Schultz, George Shoemaker, Mark Pankow, Kara Peters, Tyler Goode
Publikováno v:
Applied optics. 55(25)
The development and validation of a high-speed, full-spectrum measurement technique is described for fiber Bragg grating (FBG) sensors. A FBG is surface-mounted to a split-Hopkinson tensile bar specimen to induce high strain rates. The high strain gr
Autor:
Frederick Seng, Rex King, Reid Worthen, Nikola Stan, LeGrand Shumway, Stephen M. Schultz, Richard H. Selfridge
Publikováno v:
OFC
This paper shows a method allowing electric field sensing in high vibration environments. The vibration sensitivity is reduced using a push-pull configuration and external phase modulation. This paper provides both theoretical description and experim