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Title: On compression and damage evolution in two thermoplastics

Journal Article · · Proceedings of the Royal Society. A. Mathematical, Physical and Engineering Sciences
ORCiD logo [1];  [1];  [1];  [2];  [3];  [1];  [1];  [4]
  1. Univ. of Manchester (United Kingdom)
  2. Univ. of Manchester (United Kingdom); Defence Science and Technology Organisation, Adelaide (Australia)
  3. Science and Technology Facilities Council (STFC), Harwell Campus, Oxford (United Kingdom). Diamond Light Source, Ltd.
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
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The well-known Taylor cylinder impact test, which follows the impact of a flat-ended cylindrical rod onto a rigid stationary anvil, is conducted over a range of impact speeds for two polymers, polytetrafluoroethylene (PTFE) and polyetheretherketone (PEEK). In previous work, experiments and a model were developed to capture the deformation behaviour of the cylinder after impact. These works showed a region in which spatial and temporal variation of both longitudinal and radial deformation provided evidence of changes in phase within the material. In this further series of experiments, this region is imaged in a range of impacted targets at the Diamond synchrotron. Further techniques were fielded to resolve compressed regions within the recovered polymer cylinders that showed a fracture zone in the impact region. The combination of macroscopic high-speed photography and three-dimensional X-ray imaging has identified the development of failure with these polymers and shown that there is no abrupt transition in behaviours but rather a continuous range of responses to competing operating mechanisms. The behaviours noted in PEEK in these polymers show critical gaps in understanding of polymer high strain-rate response.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1414106
Report Number(s):
LA-UR-17-22185; TRN: US1800636
Journal Information:
Proceedings of the Royal Society. A. Mathematical, Physical and Engineering Sciences, Vol. 473, Issue 2197; ISSN 1364-5021
Publisher:
The Royal Society PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

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Cited By (1)

PEEK surface modification by fast ambient-temperature sulfonation for bone implant applications journal March 2019

Linked Research (4)

Figures / Tables (11)

Figure 1.(p. 4)figure Figure 1.
Figure 2.(p. 5)figure Figure 2.
Table 1.(p. 5)table Table 1.
Figure 3.(p. 6)figure Figure 3.
Figure 4.(p. 7)figure Figure 4.
Figure 5.(p. 7)figure Figure 5.
Figure 6.(p. 9)figure Figure 6.
Figure 7.(p. 9)figure Figure 7.
Figure 8.(p. 10)figure Figure 8.
Table 2.(p. 11)table Table 2.
Figure 9.(p. 13)figure Figure 9.

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36 MATERIALS SCIENCE