Journal ArticleDOI
A Simple Dual-Beam Time-Multiplexed Photon Doppler Velocimeter for Pressure-Shear Plate Impact Experiments
D. D. Mallick,D. D. Mallick,M. Zhao,Bryan T. Bosworth,Brian E. Schuster,Brian E. Schuster,Mark A. Foster,K.T. Ramesh +7 more
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TLDR
In this paper, the authors demonstrate transverse velocity detection using a modified PDV system where they subtract the measured normal velocity history from a concurrent velocity history measured at a canted angle to the target surface.Abstract:
Pressure-shear plate impact experiments generate normal and transverse particle velocities during high strain rate deformations. Traditionally, freespace lenscoupled tabletop laser interferometry techniques are used together with diffraction gratings to interrogate the evolving velocity vector at the back face of the target plate. Recently, fiberoptic velocimetry (photon Doppler velocimetry or PDV) has become commonplace for measuring normal particle velocities above 200m/sec. In this work, we demonstrate transverse velocity detection using a modified PDV system where we subtract the measured normal velocity history from a concurrent velocity history measured at a canted angle to the target surface to obtain the transverse velocity component. This modified system is time-multiplexed to reduce the number of components, and uses an erbium doped fiber amplifier (EDFA) to boost the angled signal intensity while maintaining low noise. The system operates as a heterodyne interferometer, but features a frequency upshifted reference leg to improve data analysis at the particle velocities expected in the experiment. We demonstrate by direct comparison that this inexpensive and simple approach is as effective as traditional grating methods.read more
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Journal ArticleDOI
Extreme measurements with Photonic Doppler Velocimetry (PDV).
TL;DR: This review discusses the evolution of PDV, its operational details, practical analysis, and outstanding challenges of this conceptually simple application of the optical Doppler effect.
Journal ArticleDOI
High-velocity micro-projectile impact testing
David Veysset,David Veysset,Jae-Hwang Lee,Mostafa Hassani,Steven E. Kooi,Edwin L. Thomas,Keith A. Nelson +6 more
TL;DR: This review aims to present a comprehensive overview of high-velocity microparticle impact techniques to provide a reference for researchers in different materials testing fields and facilitate experimental design in dynamic testing for a wide range of impactor sizes, geometries, and velocities.
Journal ArticleDOI
Laser-Driven Flyers and Nanosecond-Resolved Velocimetry for Spall Studies in Thin Metal Foils
D. D. Mallick,D. D. Mallick,M. Zhao,J. Parker,J. Parker,Vignesh Kannan,Bryan T. Bosworth,Dinakar Sagapuram,Mark A. Foster,K.T. Ramesh +9 more
TL;DR: In this article, a laser-launched micro-flyer was used for spall strength measurement of AZ31B Mg alloy thin foils, a material system with potential applications as a lightweight protection material.
Journal ArticleDOI
High-velocity micro-projectile impact testing
TL;DR: In this article, a comprehensive overview of high-velocity microparticle impact techniques is presented to provide a reference for researchers in different materials testing fields and facilitate experimental design in dynamic testing for a wide range of impactor sizes, geometries, and velocities.
Journal ArticleDOI
Spall strength in alloyed magnesium: A compendium of research efforts from the CMEDE 10-year effort
D. D. Mallick,D. D. Mallick,Suhas Eswarappa Prameela,Deniz Ozturk,C. L. Williams,Minju Kang,Gianna M. Valentino,Jeffrey T. Lloyd,Jeffrey T. Lloyd,Justin Wilkerson,Timothy P. Weihs,K.T. Ramesh +11 more
TL;DR: In this paper, a large number of spall experiments were performed with a laser-driven micro-flyer apparatus on Mg-9Al (wt.%) thin foil specimens with various precipitate morphologies.
References
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MonographDOI
Mechanical Behavior of Materials
TL;DR: A balanced mechanics-materials approach and coverage of the latest developments in biomaterials and electronic materials, the new edition of this popular text is the most thorough and modern book available for upper-level undergraduate courses on the mechanical behavior of materials as discussed by the authors.
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Dynamic Behavior of Materials
TL;DR: In this paper, the authors present a method to produce dynamic deformation at high strain rates by using Shear Bands (Thermoplastic Shear Instabilities) and dynamic fracture.
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Laser-induced periodic surface structure. I. Theory
TL;DR: In this paper, a theory for laser-induced periodic surface structure was developed by associating each Fourier component of induced structure with the corresponding Fourier components of inhomogeneous energy deposition just beneath the surface.
Book
Radar Systems Analysis and Design Using MATLAB
TL;DR: Written for researchers and engineers working in the field, Radar Systems Analysis and Design Using MATLAB provides fundamental radar principles, advanced topics, and rigorous but easy-to-follow mathematical derivations.
Journal ArticleDOI
Compact system for high-speed velocimetry using heterodyne techniques
TL;DR: In this article, a high-speed velocimeter was built using off-the-shelf components developed for the telecommunications industry, including fiber lasers, high-bandwidth high-sample-rate digitizers, and fiber optic circulators.