Pull-out testing of multiscale structured metallic z-reinforcements for CFRP laminates

详细信息    查看全文

• 作者：Michael Juergens^a ; ^{michael.m.juergens@airbus.com} ; ^m.jue@web.de ; Manuel Tiago von Hafe Pé ; rez Ferreira da Silva^a ; Sebastian Heimbs^a ; Holger Lang^b ; Elisabeth Ladstaetter^c ; Elke Hombergsmeier^a
• 关键词：z-Reinforcements ; Surface properties ; Mechanical properties ; Polymer-matrix composites (PMC)
• 刊名：Composite Structures
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：161
• 期：Complete
• 页码：384-392
• 全文大小：2001 K
• 卷排序：161

文摘

A testing method is presented to determine the pull-out behavior of interleaving metallic z-reinforcements for carbon fiber reinforced polymer (CFRP) laminates and joints. Energy absorbing mechanisms are described with respect to the metallic materials and means of surface pretreatment applied. Mechanical, wet-chemical and physical pretreatments result in milli-, micro- and nanoscaled oxide morphologies of titanium and stainless steel surfaces. Both, a high macro roughness of the reinforcement surface and a low difference in thermal expansion with regard to the surrounding CFRP is clearly proven to feature the highest level of energy absorption during pull-out tests. Surface analyses through scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) indicate laser-induced nanostructure’s scale and morphology to provide good adhesion properties but not to allow macroscopic friction between metal surface and epoxy resin.