在低速度硬体冲击下对透裂曲层玻璃元件的损坏评估
Chiara Bedon1, Nicola Cella1, Riccardo Del Bello1
1Department of Engineering and Architecture, University of Trieste, 34127 Trieste, Italy.
Materials (Basel, Switzerland)
|October 16, 2025
概括
这项研究研究了用乙烯-乙酸乙烯 (EVA) 和SentryGlas® (SG) 间层进行重复冲击的层状玻璃 (LG). 与EVA介层相比,SG介层表现出优越的抗损伤能力.
科学领域:
- 材料科学 材料科学 材料科学
- 结构工程 结构工程
- 玻璃技术 玻璃技术 玻璃技术
背景情况:
- 由于多种影响因素,评估层状玻璃 (LG) 的断裂后机械性能是复杂的.
- 损坏的LG元件的行为,特别是关于损坏严重程度的行为,尚未得到充分的探索.
- 这项研究的重点是小规模的,具有不同间层的先前破裂的LG元素.
研究的目的:
- 在重复的硬体冲击后,用乙烯-乙酸乙烯 (EVA) 和SentryGlas® (SG) 间层实验分析层状玻璃的机械性能.
- 根据层间类型量化和比较LG元素中的损伤进展.
- 评估不同间层在减轻撞击损伤方面的有效性.
主要方法:
- 使用了两层,小尺寸的多层玻璃样品 (200毫米×50毫米),采用化 (AN) 玻璃和EVA或SG间层.
- 在三点曲 (3PB) 设置中,样品接受了n = 10次重复的硬体撞击试验.
- 在每次撞击之前和之后 (n=0到n=10) 在14个控制点使用漫游子测试进行实验模式分析,以监测基本振动频率 (f1) 的变化.
主要成果:
- 在EVA样本中观察到基本振动频率的显著降低,这表明在重复冲击后损伤的传播很大.
- SentryGlas® (SG) 样品表现出明显不同的机械反应,显示硬体冲击的严重影响较小.
- 该研究量化了在冲击负载下EVA和SG中间层之间明显的损伤进展.
结论:
- SentryGlas® (SG) 间层与层状玻璃中的乙烯基乙 (EVA) 间层相比,在重复的硬体冲击中对损伤提供了更好的抵抗力.
- 基本振动频率是评估层状玻璃元件损坏严重程度和传播的敏感指标.
- 研究结果强调了层间选择在提高层玻璃在冲击条件下的耐用性和安全性方面的关键作用.
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