HVI tests on CFRP laminates at low temperature

Numata, Daiju; Ohtani, Kiyonobu; Anyoji, Masayuki; Takayama, K.; Togami, Kenji; Sun, Mingyu

doi:10.1016/j.ijimpeng.2008.07.055

Cited by 33 publications

(14 citation statements)

References 10 publications

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“…Numata et al (2008) found that the fracture patterns around penetration holes and debris cloud characteristics were independent of ambient temperature for hypervelocity impact. This is in stark contrast to results obtained for low velocity impact tests where temperature effects do play a prominent role in determining the nature and extent of cracking damage and debris cloud formation and propagation.…”

Section: Hvi Response Characterizationmentioning

confidence: 95%

Protecting Earth-orbiting spacecraft against micro-meteoroid/orbital debris impact damage using composite structural systems and materials: An overview

Schonberg

2010

Advances in Space Research

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Section: Hvi Response Characterizationmentioning

confidence: 95%

Protecting Earth-orbiting spacecraft against micro-meteoroid/orbital debris impact damage using composite structural systems and materials: An overview

Schonberg

2010

Advances in Space Research

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“…Due to their low density and high mechanical properties, composite materials are now more and more used in the aerospace industry. For instance, the behavior of composites with carbon components has been examined under HVI [6][7]. Thus, in order to improve the predictive capabilities of hydrodynamic simulations for such materials, HVI studies on graphite are of particular interest.…”

Section: Introductionmentioning

confidence: 99%

Simulations of Hypervelocity Impacts into Graphite

Hebert

Seisson

Bertron

et al. 2015

Procedia Engineering

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This paper presents numerical simulations of hypervelocity impacts of 0.5-mm steel spheres into graphite, for velocities ranging between 1100 and 4500 m/s. Experiments have evidenced a non-monotonic evolution of the projectile penetration depth, along with the trapping of the projectile below the crater surface. Using numerical simulations and simple constitutive relations, we show how our experimental results can be related to both materials mechanical properties. We take advantage of the succession of physical mechanisms to build a step by step procedure and identify thresholds of yield and spall strength that allow a first restitution of the experimental results. These threshold values for the steel projectile were found to be consistent with the literature. As regards the graphite target, the yield strength has also been identified, and we propose to model its dependence with pressure through a linear relation. Comparisons between experiments and simulations are presented and discussed. Despite some difference at the highest impact velocities, the overall trend is well reproduced, which suggests that our results could be used as a starting point for further studies with more complex models.

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“…Since compressive strength degrades severely after low-velocity impacts like tool-drops (Soutis and Curtis, 1996), an enormous number of experiments (e.g., Hull and Shi, 1993;Schoeppner and Abrate, 2000) and analyses (e.g., Geubelle and Baylor, 1998;Donadon et al, 2008) have been reported on this issue. A number of studies have been reported on the response of composite materials to hypervelocity impact and the generation of a debris cloud, i.e., fragments of a target (e.g., Tennyson and Lamontagne, 2000;Numata et al, 2008;Wicklein et al, 2008;Francesconi et al, 2012). Hypervelocity impact, with a projectile velocity of several kilometers per second, represents the opposite end of impact problems.…”

Section: Introductionmentioning

confidence: 99%