Forming Potential of Steel/Polymer/Steel Sandwich Composites with Local Plate Inserts
Forming Potential of Steel/Polymer/Steel Sandwich Composites with Local Plate Inserts
复制标题
具有局部板插入的钢/聚合物/钢夹层复合材料的成型潜力
DOI：
10.4028/www.scientific.net/msf.706-709.681
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
A. Carradó
中科院分区：
文献类型：
--
作者：
H. Palkowski;O. Sokolova;A. Carradó
高性能金属/聚合物/金属混合夹层复合材料是全球汽车、航空航天和造船工程轻质结构中极具吸引力的材料。由于机械、热和弹性性能的出色结合，以及高成型潜力，它们可用于高振动领域，这些领域需要聚合物具有高阻尼性能，同时金属具有高强度和刚度。由于聚合物的弹性行为以及低熔融温度，这些基于聚合物的夹层结构在机械或热连接的情况下可能存在缺点。在软芯连接处局部插入金属板可以解决此类问题。但有或没有局部镶嵌的夹层材料的成形行为有很大不同。这种类型的夹层复合材料是通过辊压粘合生产的。它们的质量和位置由 Lockin 热成像技术控制。通过深拉和弯曲测试具有不同几何形状、尺寸、类型和嵌体位置的三明治的成形行为，并借助数字摄影测量进行分析，并与实验获得的机械性能进行比较。因此，局部嵌体及其几何形状、尺寸和类型强烈影响成形极限条件。将展示深冲和弯曲后非增强和增强夹层区域流动行为的差异，以及嵌体位置的影响。
High-performance metal/polymer/metal hybrid sandwich composites are attractive materials for lightweight constructions in automotive, aerospace and naval engineering world-wide. Due to the excellent combination of mechanical, thermal and elastic properties and, as a result of high forming potential, they can be used in areas of high vibration, where high damping properties of the polymer are demanded and at the same time high strength and stiffness are given by the metal. Disadvantages can be given in case of mechanical or thermal joining of these polymer-based sandwiches because of the elastic behaviour as well as low melting temperature of the polymer. Local metal plate insertions in the soft core at the place of joining can be a solution for such kind of problems. But forming behaviour of sandwich materials with and without local inlays differs strongly. Sandwich composites of that type were produced by roll-bonding. Their quality and their position were controlled by Lockin thermography. The forming behaviour of sandwiches with different geometry, size, type and the position of the inlays was tested by deep drawing and bending and analysed with the help of digital photogrammetry and compared to experimentally obtained mechanical properties. As a result, the local inlays, as well as their geometry, size and type strongly influence the forming limit conditions. The differences in flow behaviour of non-reinforced and reinforced sandwich regions after deep drawing and bending will be presented, as well as the influence of the position of the inlays.