碳纤维复合材料涡流检测方法研究.pdf
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- 碳纤维 复合材料 涡流 检测 方法 研究
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1、XX 大学毕业毕业设计(设计(论文论文)题题目目:碳纤维复合材料碳纤维复合材料涡流涡流检测方法研究检测方法研究学学院:院:测试与光电工程学院测试与光电工程学院专业名称:专业名称:测控技术与仪器测控技术与仪器班级学号:班级学号:学生姓名:学生姓名:指导教师:指导教师:二二 Oxx 年年六六 月月碳纤维复合材料碳纤维复合材料涡流涡流检测方法研究检测方法研究摘要:摘要:碳纤维复合材料由于其诸多的优越性能尤其是高比模量、高比强度在各个的领域受到越来越多的关注,特别是航空航天领域。然而,在生产制造和投入使用过程中不可避免地会产生缺陷。现阶段,碳纤维复合材料应用较多的无损检测方法为射线检测、超声检测、红外
2、热成像检测等,取得了一定的效果但又各自存在着不足。传统的涡流检测较之有一定的优势,不仅可靠性高,且在探测时不需清除零件表面,可在不分解飞机的前提下,在外场对飞机进行原位探伤。然而,碳纤维复合材料涡流检测的研究还很少。本文基于这一现实情况,对碳纤维复合材料的涡流检测进行研究。本设计以含有疏松自然缺陷的碳纤维复合材料板材为样品进行涡流检测实验研究。实验在 40K-200KHz 的检测频率范围内对样品进行检测,研究合适的检测频率以及不同频率对缺陷信号的大小以及提离效应的影响。实验结果表明:涡流检测可用于对样品工件疏松自然缺陷的探伤;在实验探究范围内较为合适的检测频率为 110K-150KHz;在探究
3、频率范围内,缺陷信号和提离效应均随着检测频率增大而增大。关键词:关键词:碳纤维复合材料;无损检测;涡流检测。StudyStudy ofof EddyEddy currentcurrent testingtesting methodsmethods ofof c carbonarbonf fiberiber c compositesompositesAbstract:Due to its many advantages particularly high specific modulus andhigh strength,carbon fiber composite material get m
4、ore attention in variousfields,especially in aerospace.However,investment in the manufacturing and use ofthe process will inevitably produce flaws.At this stage,the carbon fiber compositematerial application of more NDT method-ray inspection,ultrasonic testing,infraredthermalimagingdetection,andachi
5、evedsomeresultsbuttheirlackofexistence.Comparedwiththose,conventionaleddycurrenttesting hassomeadvantages,not only high reliability,and upon detection without clearing parts of thesurface,it can outfield testing of aircraft under the premise of the plane does notdecompose.However studies of carbon f
6、iber composite material is also very little eddycurrent testing.Based on this reality,eddy current testing of carbon fiber compositeswere studied.In this study,carbon fiber composite panels that containing loose natural defecteddy current testing samples studied.Experiments in the 40K-200KHz frequen
7、cyrange testing samples for studying suitable detection frequency,the change of defectdetection signal and lift-off effect at different frequencies.The results indicate:Eddy current testing can be used to detect the natural loosedefect of the sample;more appropriate detection frequency is 110k-150KH
8、z withinthe experimental range inquiry;the defect signal and the lift-off effect increased withincreasing frequency of testing in exploring the range of frequencies.Keyword:Keyword:Carbon fiber composite materials;NDT;Eddy Current Testing.目录目录1绪论.11.1 选题的依据及意义.11.2 碳纤维复合材料概述.21.2.1 复合材料概述.21.2.2 碳纤维
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