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LOW-VELOCITY IMPACT BEHAVIOR OF ALUMINUM-FIBER/EPOXY LAMINATES: A COMPREHENSIVE EXPERIMENTAL STUDY

机译:铝纤维/环氧树脂层压板的低速冲击行为:一项综合实验研究

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摘要

Considering many potential applications of fiber reinforcEd metal laminates (FMLs) in sensitive structures, it is necessary to understand their mechanical behavior under impact loads. In this study, low velocity impact tests based on ASTM D7136 have been conducted on FMLs made of 1050 aluminum sheEts and various types of fiber reinforced polymer (FrP) layers; namely E-GLass, kevlar 49, and carbon T300 plain woven in the epoxy resin. Projectile energy, fiber type and the number of successive impacts are selected among important parameters that can affect the performance of FMLs. In particular, the effects of these parameters on the absorbed energy, contact force, front and rear face damage areas, central deflection and permanent deformation of FMLs have been investigated. For determining the damage area and central deflection of the specimens, an image processing method is adapted.
机译:考虑到纤维增强金属层压板(FML)在敏感结构中的许多潜在应用,有必要了解其在冲击载荷下的机械性能。在这项研究中,基于ASTM D7136的低速冲击试验已在由1050铝板和各种类型的纤维增强聚合物(FrP)层制成的FML上进行;即E-GLass,凯夫拉尔49和碳T300平纹编织在环氧树脂中。从会影响FML性能的重要参数中选择射弹能量,纤维类型和连续撞击的次数。特别是,已经研究了这些参数对FML的吸收能量,接触力,正面和背面损坏区域,中心挠度和永久变形的影响。为了确定样品的损伤区域和中心挠度,采用了图像处理方法。

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