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首页> 外文期刊>Composite Structures >Evaluation of the matrix crack number in carbon fiber reinforced plastics using linear and nonlinear acousto-ultrasonic detections
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Evaluation of the matrix crack number in carbon fiber reinforced plastics using linear and nonlinear acousto-ultrasonic detections

机译：使用线性和非线性声学 - 超声检测评价碳纤维增强塑料中的基质裂缝数

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摘要

The evaluation of matrix cracks in carbon fiber reinforced plastics that influence the performance of the composite structure is important. This study evaluated the number of matrix cracks generated from a three-point bending test using linear and nonlinear acousto-ultrasonic detections and subsequently conducted a comparative investigation. Matrix cracks with typical width of approximately 2 m were generated with an increase in the applied load, as confirmed by the acoustic emission detection. Three repetitions of the experiment demonstrated that the ultrasonic amplitude linearly decreased, and the second- and third-order relative nonlinearity increased in proportion to the number of matrix cracks. Subsequently, the effects of cycle number and center frequency on the ultrasonic sensitivities were discussed. The results indicated that linear detection is preferable because of its reliability and simplicity although both linear and nonlinear ultrasonic detections can be used to evaluate the matrix cracks.
机译：碳纤维增强塑料中基质裂缝的评价重要性是重要的。该研究评估了使用线性和非线性声学 - 超声波检测从三点弯曲试验中产生的基质裂缝的数量，随后进行了比较研究。通过施加的负载的增加，产生具有约2米的典型宽度的矩阵裂缝，通过声发射检测证实。实验的三次重复证明了超声波幅度线性降低，第二和三阶相对非线性与矩阵裂缝的数量成比例地增加。随后，讨论了循环数和中心频率对超声敏感性的影响。结果表明，线性检测是优选的，因为其可靠性和简单性，尽管可以使用线性和非线性超声波检测来评估矩阵裂缝。

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  • 来源
    《Composite Structures》 |2021年第1期|112962.1-112962.10|共10页
  • 作者

    Wang Rong; Wu Qi; Xiong Ke; Zhang Hanqi; Okabe Yoji;

  • 作者单位

    Nanjing Univ Aeronaut & Astronaut State Key Lab Mech & Control Mech Struct Nanjing 210016 Peoples R China;

    Nanjing Univ Aeronaut & Astronaut State Key Lab Mech & Control Mech Struct Nanjing 210016 Peoples R China|Univ Tokyo Inst Ind Sci Meguro Ku 4-6-1 Komaba Tokyo 1538505 Japan;

    Nanjing Univ Aeronaut & Astronaut State Key Lab Mech & Control Mech Struct Nanjing 210016 Peoples R China;

    Nanjing Univ Aeronaut & Astronaut State Key Lab Mech & Control Mech Struct Nanjing 210016 Peoples R China;

    Univ Tokyo Inst Ind Sci Meguro Ku 4-6-1 Komaba Tokyo 1538505 Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Matrix crack; Composites; Lamb wave; Acousto-ultrasonics; Nonlinearity; Nondestructive testing;

    机译：矩阵裂缝;复合材料;羊浪;声学 - 超声波;非线性;无损检测;

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