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概括
此摘要是机器生成的。

在高压树脂转移成型 (HP-RTM) 中使用阶段式阵列超声波测试进行流前监测,可以改善工艺控制. 这种非破坏性方法可将仿真精度提高约70%,以减少缺陷.

关键词:
这是一个HP-RTM.流量前部监控 流量前部监控模拟流动的模拟流动.在线测量在线测量过程优化优化过程优化厚墙复合材料的厚墙复合材料超声波测试 超声波测试 超声波测试

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科学领域:

  • 材料科学与工程 材料科学与工程
  • 制造过程 制造过程 制造过程
  • 非破坏性测试是指非破坏性测试.

背景情况:

  • 通过树脂转移成型 (RTM) 进行纤维增强塑料的生产可能会遭受纤维错位等缺陷,特别是在高压RTM (HP-RTM) 中.
  • 这些缺陷显著降低机械性能,需要精确控制制造过程.
  • 目前的模拟方法提供了基本的模具填充设计,但由于众多变量,很难复制现实世界的行为.

研究的目的:

  • 为了研究在HP-RTM模具中应用相位阵列超声波测试来监测流面.
  • 减少监控工具在制造过程中的整合力度.
  • 通过将实验数据与模拟结果进行比较,提高工艺模拟的准确性.

主要方法:

  • 利用阶段式阵列超声波测试来监测玻璃纤维增强聚氨树脂试样的生产期间的流向前线.
  • 用分相阵列超声波探头记录单个线路扫描,分析数据的空间分辨率为0.85毫米,平均在6.8毫米的窗口上.
  • 通过改变探头方向和线扫描方向来确定局部流速.
  • 进行了过程模拟研究,包括局部变化的纤维体积含量.

主要成果:

  • 成功监控HP-RTM模具中的流量前部,使用相位阵列超声波.
  • 建立了一种方法来确定模具填充过程中的局部矩阵系统流速.
  • 在实验测量和工艺模拟之间达成约70%的一致性.

结论:

  • 阶段式阵列超声波测试是一种可行的非破坏性方法,用于HP-RTM中的流域前部监测.
  • 这种技术使得即使在局部有限的测量范围内,也可以得出关于全球流动行为的结论.
  • 改进模拟和实验之间的相关性有助于最大限度地减少缺陷并优化HP-RTM过程.