2D C/SiC 复合材料的静压痕力的损伤表征

Abstract

Abstract: In order to examine the mechanical properties of 2D C/SiC composites with invisible damages induced by external forces, this paper employed thermal imaging testing and residual strength testing to characterize the damage of 2D C/SiC composites induced by quasi-static indentation (QSI). The results indicated that when the energy applied reached 0.75 J, damage started to occur inside the composites; above 1.8 J (the contact force was above 1 700 N, and the depth reached 1 mm), the damage mode transformed. With the aggravation of the damage, the decreasing rate of residual compressive strength was nearly 2 times higher than that of the residual tensile strength.

Key words: quasi-static indentation, loaded energy, indentation, damage resistance, damage tolerance

CLC Number:

XU Hongrui, CHENG Laifei, MEI Hui. The Characterization of Indentation of 2D C/SiC Composites Subjected to Quasi-static Indentation[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2012, 33(8): 1547-1553.

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The Characterization of Indentation of 2D C/SiC Composites Subjected to Quasi-static Indentation

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