Investigation of the damage evolution of metal inserts embedded in carbon fiber reinforced plastic by means of computed tomography and acoustic emission
Investigation of the damage evolution of metal inserts embedded in carbon fiber reinforced plastic by means of computed tomography and acoustic emission
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通过计算机断层扫描和声发射研究嵌入碳纤维增强塑料中的金属嵌件的损伤演变
DOI：
10.1002/mawe.201800002
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发表时间：
2018
影响因子：
1.1
通讯作者：
Weidenmann
中科院分区：
文献类型：
--
作者：
Pottmeyer;Merzkirch;Schlegel;Weidenmann
碳纤维增强塑料由于其出色的特定机械性能而成为轻质结构的有前途的材料，例如在汽车应用中。然而，通过可拆卸连接在结构碳纤维增强塑料部件中的载荷传递对复合材料提出了挑战。传统上，必须为此目的对部件进行钻孔，由此纤维连续性被中断，因此相关的局部应力积累降低了复合材料的承载能力。这可以通过使用嵌入式金属元件（即所谓的插入件）来连接结构中的部件来防止。刀片拉伸载荷下的损伤行为是非常复杂的，是基于不同的机制。为了了解拉伸载荷下的损伤演化，需要详细了解插入件的变形、层合板中的裂纹扩展以及金属插入件与碳纤维增强塑料之间的脱粘。本文旨在通过声发射和计算机断层扫描分析，研究复合材料板在拉伸载荷作用下的原位破坏行为。 在进行声发射分析监测的拉伸试验时，在层压板下面额外安装了一个感应应变计。
Carbon fiber reinforced plastics are promising materials for lightweight structures, for instance in automotive applications due to their outstanding specific mechanical properties. However, the load transfer in structural carbon fiber reinforced plastics parts via a detachable connection poses a challenge for the composite. Conventionally, the parts have to be drilled for this purpose whereby the fiber continuity is interrupted and hence the associated local stress accumulation decreases the load bearing capacity of the composite. This can be prevented by using embedded metal elements, so‐called inserts, for joining parts in structures. The damage behavior under tensile loading of inserts turned out to be extremely complex and is based on different mechanisms. In order to understand the damage evolution under tensile loading detailed knowledge about the deformation of the insert, crack growth in the laminate and debonding between metal insert and carbon fiber reinforced plastics is necessary. This paper aims for an investigation of the in situ failure behavior during tensile loading of composite sheets equipped with two different types of inserts by means of acoustic emission and computed tomography analysis. An inductive strain gauge was additionally installed underneath the laminate when performing the tensile tests monitored by acoustic emission analysis.
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DOI：
--
发表时间：
1983
期刊：
影响因子：
--
作者：
D. Valentin;P. Bonniau;A. Bunsell
通讯作者：
A. Bunsell
应用声发射研究复合材料粘接搭接剪切接头蠕变行为
DOI：
--
发表时间：
2005
期刊：
影响因子：
--
作者：
A. Magalhães;M. Moura
通讯作者：
M. Moura
夹层结构的 3D 断层扫描表征
影响因子：
4.2
作者：
S. Dietrich;K. Weidenmann;P. Elsner
通讯作者：
P. Elsner
影响因子：
9.1
作者：
Scott, A. E.;Mavrogordato, M.;Spearing, S. M.
通讯作者：
Spearing, S. M.