斜缝与Z-pin混合增强泡沫夹层复合材料力学性能实验研究  

Experimental study on the mechanical properties of sandwich composite reinforced by bias stitching and Z-pin inserting

作　　者：季苏东[1] 李敏[1] 孙志杰[1] 张佐光[1] 王旭 

机构地区：[1]北京航空航天大学材料科学与工程学院,空天材料与服役教育部重点实验室,北京100191 [2]上海飞机制造有限公司航空制造技术研究所复合材料中心,上海200436

出　　处：《复合材料学报》2010年第4期87-93,共7页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(50803002)

摘　　要：结合斜缝合增强和Z-pin增强2种方法,采用混合增强方法制备泡沫夹层结构,并对这种结构材料的平压、平拉和剪切力学性能进行了实验研究,考察了不同混合比例对其力学性能和破坏模式的影响。结果表明,夹层结构中,随着Z-pin比例的增加,压缩强度和模量增大;随着斜缝合比例的增加,拉伸强度、模量以及剪切强度增大;但不同混合增强试样的剪切模量差别不大。The mixed reinforcement combining bias stitching and Z-pin inserting was used to prepare foam core sandwich structures. The prepared sandwich structures were tested under flatwise compressive, flatwise tensile and shear loads, and the mechanical properties and damage modes were also studied. The results indicate that the compressive strength and modulus are improved with increasing Z-pin inserting, while the tensile strength, modulus and shear strength are improved with increasing bias stitching. However, there is no significant distinction in the shear modulus between different specimens.

关 键 词：复合材料 夹层结构 力学性能 混合增强 Z-PIN 斜缝合 

分 类 号：TB332[一般工业技术—材料科学与工程]