T300级碳纤维复合材料层压板边缘冲击性能研究  

Research on Edge-impact Mechanical Properties of T300 Carbon Fiber Composite Laminates

作　　者：张强[1] 谢佳卉[1] 宋贵宾 李磊[1] ZHANG Qiang;XIE Jiahui;SONG Guibin;LI Lei(Key Laboratory of Strength and Structural Integrity,of Aircraft Strength Research Institute of China,Xi'an 710065,Shaanxi,China)

机构地区：[1]中国飞机强度研究所强度与结构完整性全国重点实验室,西安710065

出　　处：《高科技纤维与应用》2024年第6期32-36,共5页Hi-Tech Fiber and Application

摘　　要：复合材料作为一种轻质高强材料,在航空航天、汽车工业等领域被广泛应用。本文对T300级碳纤维复合材料层压板边缘冲击和冲击后压缩进行了试验研究,首先采用洛氏冲击引入冲击损伤,发现损伤沿厚度方向基本呈对称分布,小能量便会造成大长度劈裂和大范围层间开裂,通过超声C扫检测发现损伤形态呈现不规则椭圆形;进行了边缘冲击后压缩测试,通过多处粘贴应变片观察损伤扩展情况,绘制了相应的载荷-应变曲线,发现在达到最终破坏载荷之前,部分试样存在损伤扩展,最终主要失效模式为过损伤区的横向压缩破坏。As a lightweight and high-strength material,composite materials are widely used in aerospace,automobile industry and other fields.This article conducted an experimental study on the edge-impact and compression after edge-impact of T300 carbon fiber composites.First,Rockwell impact was used to introduce impact damage.It was found that the damage was basically symmetrically distributed along the thickness direction,and small energy would cause long-length splitting and large-scale interlaminar cracking.Through ultrasonic C-scan inspection,it was found that the damage was in an irregular elliptical shape;a compression test after edge impact was conducted,and the damage expansion was observed by pasting strain gauges in multiple places,and the corresponding load-strain curve was drawn.It was found that before reaching the final failure load,there is damage expansion in thepart of specimen,and ultimately compression failure across the damaged area is the main failure mode.

关 键 词：T300级碳纤维复合材料 层压板 边缘冲击 试验研究 

分 类 号：TB332[一般工业技术—材料科学与工程]