Flash X-ray radiography technique to study the high velocity impact of soft projectile on E-glass/epoxy composite material

Ramudu, B. Venkata; Reddy, Chetan; Madhu, V.

doi:10.1016/j.dt.2018.08.014

Cited by 13 publications

(3 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…X-ray high-speed photography technology is applicable to high-speed reaction processes that tend to produce intense incandescent light, dispersed material particles, dense smoke, dust, or particle clouds that prevent the visible light from capturing the ontology of the substance under test. As an important experimental technology in the fields of terminal ballistics and explosion research, X-rays are also applicable to photographing metallic and non-metallic shields and have been widely used in the study of ballistics, explosion mechanics, high-speed collisions, plasma, and other action processes [16].…”

Section: Design Of High-speed Pulse X-ray Static Explosion Experimentsmentioning

confidence: 99%

Dispersion Properties of Fragments of Square Metal Shells Driven by Explosive Loading

Huang,

Zhang,

Liu

et al. 2023

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

The fragment dispersion properties of metal shells under internal explosive loading are important topics in the fields of public safety and defence technology. The internal explosion driving phenomenon of square charge structures is common in the design of innovative warheads, the protection of improvised explosive devices (IEDs), the storage of hazardous materials, etc., and it is essential to investigate their fragment dispersion characteristics. In this study, the effect of the eccentric initiation on the circumferential fragment speed of the square charge structure was investigated via high-speed impulse X-ray experimental technique and numerical simulating methods. Furthermore, a high-order polynomial calculation formula for the circumferential fragment dispersion speed of the square charge structure under different eccentric coefficients for initiation was established based on the numerical and experimental data. The results of this study would provide references for the disposal of IEDs and the design of warheads.

show abstract

Section: Design Of High-speed Pulse X-ray Static Explosion Experimentsmentioning

confidence: 99%

Dispersion Properties of Fragments of Square Metal Shells Driven by Explosive Loading

Huang,

Zhang,

Liu

et al. 2023

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

show abstract

“…4a). [31][32][33] For example, as a result of relying on the time of ight (TOF) technique, fast scintillators are critical for PET and CT to get better temporal resolution. [34.35] Moreover, scintillators with ultrafast decay time have the capability to distinguish almost simultaneous events and mitigate the pile-up effect (Fig.…”

Section: Introductionmentioning

confidence: 99%

Efficient and ultrafast organic scintillators by hot exciton manipulation

Du,

Zhao,

Wang

et al. 2024

Nat. Photon.

View full text Add to dashboard Cite

E cient and fast scintillators are in high demand for a variety of elds, such as medical diagnostics, scienti c instruments, and high-energy physics. However, the trade-off between high scintillation e ciency and fast timing properties is a common challenge faced by almost all scintillators. To overcome this limitation, we have developed a new strategy for organic scintillators by directing all hot excitons into fast singlet emission states without involving the lowest triplet states. Our scintillator 1,1,2,2-tetraphenylethylene (4-bromophenyl) (TPE-4Br) shows an ultrafast radiative lifetime of 1.79 ns and ~ 72600 photons MeV − 1 light yield, exhibiting an unprecedented combination of high light yield and short decay time. Our work provides a paradigm-shifting method to design e cient and ultrafast scintillators and paves the way towards exciting applications toward ultrafast detection and imaging.

show abstract

“…IMGs are the most advanced pulsed-power drivers and are being considered for the NGPP facilities 1,2 , pulsed-power accelerators 23 , flash x-ray and gamma-ray sources [23][24][25][26] , high-energy lasers (HEL) 27 , high-power microwaves (HPM) 28,29 , excimer lasers 27 , materials under extreme conditions 30,31 , high-energy density plasmas 9,[32][33][34] , radiation and nuclear effects 23,35 , national security research, and inertial confinement fusion 8,32,36 .…”

Section: Introductionmentioning

confidence: 99%

Experimental results of a 330 GW impedance-matched Marx generator

Damideh,

Btaiche,

et al. 2024

Preprint

View full text Add to dashboard Cite

Impedance-Matched Marx Generators (IMGs) are considered next generation pulsed-power drivers because of their long lifetime (> 10,000 shots), repeatability (> 0.1-Hz), fast rise time (~ 100-ns), and high-energy-delivery efficiency (~ 90%). “TITAN” is a 14-stage IMG designed to deliver 1-TW to a 2-Ω matched load. In this paper, design, simulation, and experimental results for six stages of TITAN including its triggering system, air delivery system, and pulse shaping are presented. To achieve efficiency over 85% and maximize the capability of an IMG, synchronized triggering, reduced pre-fire rate, and pulse shaping ability are crucial. In this paper, novel engineering solutions are introduced, tested, and proven to overcome those challenges. 6-stage TITAN, powered by 102 identical bricks and 102 field-distortion-triggered gas switches, could generate ~ 600-kA and ~ 700-kV across a ~ 0.9-Ω matched load when fully charged to +/- 100-kV. In these experiments, 6-stage TITAN is tested up to +/- 70-kV charge voltage which delivers a peak power of 330-GW to a 1.2-Ω resistive load.

show abstract

Flash X-ray radiography technique to study the high velocity impact of soft projectile on E-glass/epoxy composite material

Cited by 13 publications

References 11 publications

Dispersion Properties of Fragments of Square Metal Shells Driven by Explosive Loading

Dispersion Properties of Fragments of Square Metal Shells Driven by Explosive Loading

Efficient and ultrafast organic scintillators by hot exciton manipulation

Experimental results of a 330 GW impedance-matched Marx generator

Contact Info

Product

Resources

About