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基于零频波的SAFT成像用于具有不规则表面的高密度聚乙烯.

Gonglin Wang1, Caibin Xu1, Quanqing Lai1

  • 1College of Aerospace Engineering, Chongqing University, Chongqing 400044, China.

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概括
此摘要是机器生成的。

一种新的水浸合成光圈聚焦技术 (SAFT) 成像方法可以有效地检测具有不规则表面的高密度聚乙烯 (HDPE) 的缺陷. 这种零频波 (ZFW) 方法克服了先前在具有挑战性的材料中进行非破坏性测试的限制.

关键词:
损坏成像成像 损坏成像具有高度减弱功能的材料.不规则的表面不规则的表面.合成光圈聚焦技术 合成光圈聚焦技术零频波浪是一种零频波浪.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 非破坏性测试是指非破坏性测试.
  • 声学 声学 在声学方面

背景情况:

  • 超声波在非线性弹性固体中的传播会产生低声衰减的零频波 (ZFW).
  • ZFW适用于检测高衰减材料的缺陷,例如高密度聚乙烯 (HDPE).
  • 之前的ZFW方法面临着HDPE不规则的表面,复杂的路径和低合效率的挑战.

研究的目的:

  • 提出并验证一种水浸式SAFT成像方法,用于基于ZFW的HDPE有不规则表面的缺陷检测.
  • 为了解决复杂的传播路径和在实际工程应用中遇到的低合效率的局限性.

主要方法:

  • 一种水浸式SAFT成像方法,使用来自高频超声波产生的ZFW.
  • 应用斯内尔定律来确定基于已知的水-HDPE接口几何学的ZFW传播路径.
  • 在水和HDPE中计算ZFW飞行时间,以计算像素强度并通过代计算生成规范化图像.

主要成果:

  • 成功检测了直径为1毫米的侧孔钻孔缺陷,在HDPE样品中,直径约为100毫米,表面不规则 (倾斜,凸起,凸).
  • 证明该方法克服几何复杂性的能力,并实现有效的缺陷定位.
  • 验证拟议技术对具有复杂表面几何形状的高衰减材料进行非破坏性测试的有效性.

结论:

  • 拟议的水浸式SAFT成像方法有效地检测HDPE使用ZFWs的不规则表面的缺陷.
  • 这种技术为在具有挑战性的工业应用中进行非破坏性测试提供了宝贵的进步.
  • 该研究强调了ZFW和SAFT成像在具有复杂几何形状和高衰减的材料中增强缺陷特征的潜力.