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Title: Correlations among void shape distributions, dynamic damage mode, and loading kinetics [Correlations among spall void shape distributions, damage mode and shock loading kinetics]

Journal Article · · JOM. Journal of the Minerals, Metals & Materials Society
 [1];  [2];  [2];  [2];  [3];  [1];  [3];  [4];  [3];  [3];  [3];  [5]
  1. Univ. of New South Wales, Canberra (Australia). School of Engineering and Information Technology
  2. Arizona State Univ., Tempe, AZ (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Peac Institute of Multiscale Sciences, Chengdu (People's Republic of China)
  5. Argonne National Lab. (ANL), Lemont, IL (United States)

Here, three-dimensional x-ray tomography (XRT) provides a nondestructive technique to characterize the size, shape, and location of damage in dynamically loaded metals. A shape-fitting method comprising the inertia tensors of individual damage sites was applied to study differences of spall damage development in face-centered-cubic (FCC) and hexagonal-closed-packed (HCP) multicrystals and for a suite of experiments on high-purity copper to examine the influence of loading kinetics on the spall damage process. Applying a volume-weighted average to the best-fit ellipsoidal aspect-ratios allows a quantitative assessment for determining the extent of damage coalescence present in a shocked metal. It was found that incipient transgranular HCP spall damage nucleates in a lenticular shape and is heavily oriented along particular crystallographic slip directions. In polycrystalline materials, shape distributions indicate that a decrease in the tensile loading rate leads to a transition to coalesced damage dominance and that the plastic processes driving void growth are time dependent.

Research Organization:
Arizona State Univ., Tempe, AZ (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
NA0002917; 20060021DR; 20100026; FG52-06NA26169; FG52-10NA29653; NA0002005; 35561; AC52-06NA25396
OSTI ID:
1356662
Alternate ID(s):
OSTI ID: 1459809; OSTI ID: 1885648
Report Number(s):
LA-UR-16-26838; PII: 2178
Journal Information:
JOM. Journal of the Minerals, Metals & Materials Society, Vol. 69, Issue 2; ISSN 1047-4838
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

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Spallation of polycarbonate under plate impact loading journal August 2019

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