缝合复合材料层板低速冲击及冲击后压缩实验研究  

Experimental investigation of stitched laminates subjected to low-velocity impact and compression after impact

作　　者：毛春见[1] 许希武[1] 郑达[2] 

机构地区：[1]南京航空航天大学结构与强度研究所飞行器结构力学与控制教育部重点实验室,南京210016 [2]沈阳飞机设计研究所,沈阳110035

出　　处：《复合材料学报》2012年第2期160-166,共7页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(10672075);南京航空航天大学青年科技创新基金项目(NS2011004)

摘　　要：通过对缝合复合材料层板进行低速冲击和冲击后压缩实验,研究了不同类型的缝合复合材料层板的冲击损伤特性及冲击后压缩的剩余强度。实验研究表明:基体损伤和分层是缝合层板与未缝合层板低速冲击的主要损伤模式,缝合层板具有更好的抗冲击性能,更高的冲击后压缩强度。缝合密度越大的层板其抗冲击性能越好,冲击后压缩强度越高。缝合方向为0°的缝合层板较缝合方向为90°的缝合层板具有更好的抗冲击性能和更高的冲击后压缩强度。增加0°方向铺层,减少45°、-45°方向铺层,可以提高缝合层板的抗冲击性能和冲击后压缩强度。Both impact and compression after impact tests were carried out to research the impact damage and post-impact residual strength of stitched laminates in various types.The results indicate that the matrix damage and delamination are the main damage mode of stitched and unstitched laminates after impact.Compared with the unstitched laminates,stitching improves the damage resistance of impact and the compressive strength of after impact.The impact damage and the post-impact residual strength increase with the stitch density increasing.The stitch laminates with 0°direction have better damage resistance and higher compressive strength of after impact.Adding ply 0°while reducing the ply 45°,-45°can improve the damage resistance of impact and the compressive strength of after impact.

关 键 词：缝合复合材料层板 低速冲击 损伤探测 冲击后压缩 压缩强度 

分 类 号：TB330.1[一般工业技术—材料科学与工程]