Fatigue and fracture of ultrasonically welded aluminum alloys to carbon fiber reinforced thermoplastics

Fatigue and fracture of ultrasonically welded aluminum alloys to carbon fiber reinforced thermoplastics
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超声波焊接铝合金与碳纤维增强热塑性塑料的疲劳和断裂

DOI:
10.1111/ffe.13622
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发表时间:
2022
影响因子:
3.7
通讯作者:
F. Balle
F. Balle
中科院分区:
材料科学2区
文献类型:
--
作者:
F. Staab;F. Balle

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本文研究了在应力比R> 0时,铝合金(AA 5024)与纤维增强热塑性塑料(PEEK)超声焊接接头的疲劳性能。进行了初始载荷增加试验,并根据检测到的疲劳损伤引起的材料反应,推导出后续恒幅试验的载荷范围。在确定特征应力水平后,对混合断裂表面进行了微观研究。与单调拉伸试验相比,损伤行为和失效机制进行了详细的研究和讨论。对于2·106次循环的疲劳极限,所施加的最大力相当于单调测试中最大搭接剪切力的35%。观察到刚度下降至接近失效的88%。
This work evaluates the fatigue behavior of ultrasonically welded aluminum AA5024) to fiber reinforced thermoplastic (PEEK) joints at a stress ratio ofR> 0. Initial load increase tests were carried out and, based on a detected material reaction caused by fatigue damage, the load horizon for subsequent constant amplitude tests was derived. After identifying characteristic stress level, microscopic investigations of hybrid fracture surfaces were carried out. Damage behavior and failure mechanisms in comparison to monotonic tensile tests were investigated and discussed in detail. For a fatigue limit of 2·106cycles, the applied maximum force corresponds to 35% of the maximum lap shear force for monotonic testing. A drop in stiffness to 88% close to failure was observed.
DOI: 10.1007/s40194-020-00927-x
发表时间: 2020-05-27
影响因子: 2.1
作者:
Feistauer, E. E.;dos Santos, J. F.;Amancio-Filho, S. T.
通讯作者: Amancio-Filho, S. T.
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发表时间: 2018-05-11
期刊: Materials (Basel, Switzerland)
影响因子: --
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通讯作者: Maffezzoli A
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发表时间: 2018
影响因子: 3.7
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发表时间: 2019-03-17
期刊: MATERIALS
影响因子: 3.4
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发表时间: 2019-01-01
影响因子: 3.7
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通讯作者: Breuer, U. P.