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THE EFFECT OF SLAMMING IMPACT ON OUT-OF-AUTOCLAVE CURED PREPREGS OF GFRP COMPOSITE PANELS FOR HULLS

机译:撞击影响对船体GFRP复合板外的高压釜固化预浸料的影响

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This paper proposes a methodology that employs an experimental apparatus that reproduces, in pre-impregnated and cured out-of-autoclave Glass Fiber Reinforced Polymer (GFRP) panels, the phenomenon of slamming or impact on the bottom of a highspeed boat during planing. The pressure limits in the simulation are defined by employing a finite element model (FEM) that evaluates the forces applied by the cam that hits the panels in the apparatus via microdeformations obtained in the simulation. The methodology requires that various impact series be performed at different energies and that the evolution of the damage be followed via immersion ultrasound inspection to quantify how the material behaves, in addition to evaluating the delamination process via penetrating dyes using UV radiation. Slamming impacts were performed on the order of 10~5, and the micromechanisms of interlaminar and intralaminar damage propagation were observed with scanning electron microscopy (SEM). The results were analyzed by correlating them with pressure, deformation, impact energy, and applied cycles, in addition to conducting compression experiments after impact to relate the material damage with the residual strength of the impacted panels.
机译:本文提出了采用的实验装置,其再现,在预浸渍和固化的方法外的高压釜玻璃纤维增​​强聚合物(GFRP)面板,砰击或刨期间高速船底影响的现象。在仿真中的压力限制通过使用用于评估的力通过施加击中经由模拟获得microdeformations在装置中的面板上的凸轮的有限元模型(FEM)中所定义。该方法要求各冲击系列以不同的能量和使损伤的演进通过浸没超声检查之后进行量化来执行如何材料表现中,除了评估通过使用UV辐射穿透染料层离过程。砰击的影响进行了10〜5的顺序执行,并且观察到与扫描电子显微镜(SEM)的层间和层内损伤扩展的微机构。通过将它们与压力,变形,冲击能量,以及应用的循环,除了冲击后压缩进行实验,以涉及与冲击板的剩余强度的材料损坏的相关结果进行分析。

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