Journal
COMPOSITE STRUCTURES
Volume 186, Issue -, Pages 50-61Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2017.11.083
Keywords
Hopkinson bars; Dynamic compression test; Composite materials; Damage; Heat dissipation
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Funding
- DGA (Direction generale de l'armement - Ministry of Defense, France), MRIS project: Study of the thermomechanical behavior of composites under dynamic loading
- DGA, France
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In this investigation, a new experimental technique in which the deformation, damage mode, and the temperature are measured simultaneously during a high strain rate on laminated composites materials. The composites consist of unidirectional E-glass fibers reinforced epoxy polymer composites used in industrial applications. The experimental setup consists of a compression Split Hopkinson Pressure Bar (SHPB), a high-speed infrared camera and a high-speed Fastcam rapid camera. Specimens, with cubic like a shape, are impacted at different strain rates ranging from 200 to 2000 s(-1). During impact test, the specimen surface is controlled and monitored with the infrared camera which provides thermal images in time sequence and with high-speed camera which acquires the damage progressive in specimens. Experimental results show that the damage throughout specimens differs and the temperature change depending on the damage mode and their maximum exceed 219 degrees C.
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