This paper presents an experimental study of the effect of mesoscopic buckles defect and reinforcement shear, which result from forming, on the low velocity impact behavior of a composite laminate. The material studied is a glass/polyester composite with three layers of mat and one layer of taffeta fabric. To assess the properties induced on the final composite, plates with different amplitudes of calibrated defects and deformations were manufactured. First, the healthy material, which serves as a reference, was subjected to three levels of impact energy to observe the evolution of its behavior and damage mechanisms. Results of the impact tests and observations performed on the materials with calibrated defects identified a negative effect of buckling on elastic parameters and revealed greater damage relative to the healthy material. The reinforcement shear had a beneficial effect on the impact properties of the laminate, which was attributed to the increase in local fiber density.

本文提出了一种实验研究，该实验研究了成形过程中介观的屈曲缺陷和增强剪切对复合材料层合板低速冲击行为的影响。研究的材料是具有三层垫子和一层塔夫绸织物的玻璃/聚酯复合材料。为了评估在最终复合材料上引起的性能，制造了具有不同幅度的校准缺陷和变形的板。首先，作为参考的健康材料受到三个级别的冲击能量的观察，以观察其行为和损伤机理的演变。对具有校准缺陷的材料进行的冲击测试和观察结果确定了屈曲对弹性参数的负面影响，并显示出相对于健康材料更大的破坏。