High speed synchrotron x-ray phase contrast imaging of dynamic material response to split Hopkinson bar loading

Hudspeth, Matthew; Claus, Benjamin; Dubelman, Steven; Black, John T.; Mondal, Alex B.; Parab, Niranjan D.; Funnell, C.; Fang, Hai; Qi, Mei; Fezzaa, Kamel; Luo, S. N.; Chen, W.

doi:10.1063/1.4789780

Cited by 86 publications

(54 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The particles were compressed dynamically using a modified Kolsky bar setup and failure mechanisms were captured using a high speed synchrotron X-ray Phase Contrast Imaging (PCI) at Advanced Photon Source (APS) beam line 32-ID-B at Argonne National Laboratory, Argonne, IL. This experimental method has been used to study the failure mechanisms in various materials including bone-tissue interfaces, polymer fibers, concrete and rocks, and glass plates (11)(12)(13). The schematic of the experimental setup is presented in Fig.…”

Section: Experimental Methodsmentioning

confidence: 99%

Real-time visualization of dynamic particle contact failures

Parab¹,

Hudspeth²,

Claus³

et al. 2017

AIP Conference Proceedings

View full text Add to dashboard Cite

Section: Experimental Methodsmentioning

confidence: 99%

Real-time visualization of dynamic particle contact failures

Parab¹,

Hudspeth²,

Claus³

et al. 2017

AIP Conference Proceedings

View full text Add to dashboard Cite

“…2016) are described previously. 30,31 The schematic of the experimental setup is presented in Figure 1.…”

Section: 12mentioning

confidence: 99%

High speed X-ray phase contrast imaging of energetic composites under dynamic compression

Parab

Roberts

Harr

et al. 2016

Applied Physics Letters

View full text Add to dashboard Cite

Fracture of crystals and frictional heating are associated with the formation of “hot spots” (localized heating) in energetic composites such as polymer bonded explosives (PBXs). Traditional high speed optical imaging methods cannot be used to study the dynamic sub-surface deformation and the fracture behavior of such materials due to their opaque nature. In this study, high speed synchrotron X-ray experiments are conducted to visualize the in situ deformation and the fracture mechanisms in PBXs composed of octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) crystals and hydroxyl-terminated polybutadiene binder doped with iron (III) oxide. A modified Kolsky bar apparatus was used to apply controlled dynamic compression on the PBX specimens, and a high speed synchrotron X-ray phase contrast imaging (PCI) setup was used to record the in situ deformation and failure in the specimens. The experiments show that synchrotron X-ray PCI provides a sufficient contrast between the HMX crystals and the doped binder, even at ultrafast recording rates. Under dynamic compression, most of the cracking in the crystals was observed to be due to the tensile stress generated by the diametral compression applied from the contacts between the crystals. Tensile stress driven cracking was also observed for some of the crystals due to the transverse deformation of the binder and superior bonding between the crystal and the binder. The obtained results are vital to develop improved understanding and to validate the macroscopic and mesoscopic numerical models for energetic composites so that eventually hot spot formation can be predicted.

show abstract

“…We integrated the dynamic loading capability from Kolsky bars with the high-speed, highintensity X-ray imaging capability from synchrotron X-ray PCI to reveal dynamic damage evolution inside a specimen deforming at high rates, which was briefly reported earlier [28]. The experimental technique has further evolved.…”

Section: Introductionmentioning

confidence: 99%

In situ damage assessment using synchrotron X-rays in materials loaded by a Hopkinson bar

Chen

Hudspeth

Claus

et al. 2014

Phil. Trans. R. Soc. A.

Self Cite

View full text Add to dashboard Cite

Split Hopkinson or Kolsky bars are common high-rate characterization tools for dynamic mechanical behaviour of materials. Stress–strain responses averaged over specimen volume are obtained as a function of strain rate. Specimen deformation histories can be monitored by high-speed imaging on the surface. It has not been possible to track the damage initiation and evolution during the dynamic deformation inside specimens except for a few transparent materials. In this study, we integrated Hopkinson compression/tension bars with high-speed X-ray imaging capabilities. The damage history in a dynamically deforming specimen was monitored in situ using synchrotron radiation via X-ray phase contrast imaging. The effectiveness of the novel union between these two powerful techniques, which opens a new angle for data acquisition in dynamic experiments, is demonstrated by a series of dynamic experiments on a variety of material systems, including particle interaction in granular materials, glass impact cracking, single crystal silicon tensile failure and ligament–bone junction damage.

show abstract

High speed synchrotron x-ray phase contrast imaging of dynamic material response to split Hopkinson bar loading

Cited by 86 publications

References 19 publications

Real-time visualization of dynamic particle contact failures

Real-time visualization of dynamic particle contact failures

High speed X-ray phase contrast imaging of energetic composites under dynamic compression

In situ damage assessment using synchrotron X-rays in materials loaded by a Hopkinson bar

Contact Info

Product

Resources

About