Article(id=1210590157581980479, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1210590152548807015, articleNumber=null, orderNo=null, doi=10.16790/j.cnki.1009-9239.im.2024.09.014, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1694188800000, receivedDateStr=2023-09-09, revisedDate=1700668800000, revisedDateStr=2023-11-23, acceptedDate=null, acceptedDateStr=null, onlineDate=1766556785244, onlineDateStr=2025-12-24, pubDate=1726761600000, pubDateStr=2024-09-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1766556785244, onlineIssueDateStr=2025-12-24, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1766556785244, creator=13701087609, updateTime=1766556785244, updator=13701087609, issue=Issue{id=1210590152548807015, tenantId=1146029695717560320, journalId=1149653034449285133, year='2024', volume='57', issue='9', pageStart='1', pageEnd='165', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1766556784044, creator=13701087609, updateTime=1766563998200, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1210620410958312217, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1210590152548807015, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1210620410958312218, tenantId=1146029695717560320, journalId=1149653034449285133, issueId=1210590152548807015, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=131, endPage=139, ext={EN=ArticleExt(id=1210590157875581768, articleId=1210590157581980479, tenantId=1146029695717560320, journalId=1149653034449285133, language=EN, title=Research on internal defect detection and spectrum characteristics of epoxy resin composites based on ultrasonic reflection method, columnId=1192878364340924664, journalTitle=Insulating Materials, columnName=Test and Analysis, runingTitle=null, highlight=null, articleAbstract=
Fiber reinforced epoxy resin composites are widely used in electrical power equipment. However, due to their complex preparation process and multi-layered structure, internal defects are prone to be introduced during manufacture, which may lead to partial discharge and even breakdown under long-term high voltage operating condition. Early detection of these defects can significantly reduce the occurrence of failures. In this paper, an ultrasonic testing system for composite was established on the basis of ultrasonic reflection method, and various plate samples of glass fiber reinforced epoxy resin composites containing artificial crack, delamination, and metal impurity defect were prepared on the basis of vacuum assisted resin infusion molding method. Ultrasonic testing and spectral analysis were then conducted on these defect-containing plate samples. The results indicate that there are significant differences in the ultrasonic reflection waveforms for different defects of samples. By transforming the ultrasonic echoes into frequency spectra, the normalized spectral characteristic curves are obtained, and different types of defects can be identified by calculating the characteristic values from these curves. The characteristic value of the sample with crack defect is the smallest, and the characteristic value of the sample with delamination defect is the largest.
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纤维增强树脂基复合材料被广泛地应用在电力设备中,其涉及多层介质,结构复杂,内部易产生缺陷,在长期电场作用下会引发局部放电甚至绝缘击穿。对绝缘内部缺陷进行早期检测,可以有效减少事故的发生。本文基于超声反射法搭建了复合材料超声检测系统,基于真空树脂传递模塑法人工制备了含裂纹、分层和金属杂质缺陷的玻璃纤维增强环氧树脂复合材料平板试样,然后分别对含缺陷的平板试样进行超声检测与频谱分析。结果表明:不同种类缺陷试样的超声反射波形存在明显差异。通过对超声回波进行频谱变换,得出归一化频谱特性曲线,根据曲线计算特征值可以实现对不同形态缺陷的识别。其中裂纹缺陷试样的特征值最小,分层缺陷试样的特征值最大。
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杨卓然(1990-),男(汉族),江苏徐州人,高级工程师,主要从事电缆绝缘研究、新材料研发,故障试验及检测、电缆智能设备及本体运行维护等工作。
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吕立翔(1983-),男(汉族),江苏南京人,高级工程师,主要从事电缆绝缘研究、故障试验、运行维护等工作。
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吕立翔(1983-),男(汉族),江苏南京人,高级工程师,主要从事电缆绝缘研究、故障试验、运行维护等工作。
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Schematic diagram of the detection system based on ultrasonic reflection method, figureFileSmall=R4dFcup5IXGL0oaKq4YuKg==, figureFileBig=mhC7V/94H8LPVHppux6+MQ==, tableContent=null), ArticleFig(id=1218262752557187170, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=CN, label=图2, caption=
基于超声反射法的检测系统示意图, figureFileSmall=R4dFcup5IXGL0oaKq4YuKg==, figureFileBig=mhC7V/94H8LPVHppux6+MQ==, tableContent=null), ArticleFig(id=1218262752657850473, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=EN, label=Fig.3, caption=
Double crystal probe principle diagram, figureFileSmall=GIrCcFbAJI6Cf/6a9LT0/g==, figureFileBig=PumzTIdgD0iyqoJ3npcEFw==, tableContent=null), ArticleFig(id=1218262752750125166, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=CN, label=图3, caption=
双晶探头原理示意图, figureFileSmall=GIrCcFbAJI6Cf/6a9LT0/g==, figureFileBig=PumzTIdgD0iyqoJ3npcEFw==, tableContent=null), ArticleFig(id=1218262752838205556, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=EN, label=Fig.4, caption=
Cross section diagram of sample 1, figureFileSmall=o4m6zZG2dbX8tVBrEg1j2g==, figureFileBig=baLIPYLgkVnbsCXQLJfqkQ==, tableContent=null), ArticleFig(id=1218262753001783423, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=CN, label=图4, caption=
1号试样截面示意图, figureFileSmall=o4m6zZG2dbX8tVBrEg1j2g==, figureFileBig=baLIPYLgkVnbsCXQLJfqkQ==, tableContent=null), ArticleFig(id=1218262753148584068, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=EN, label=Fig.5, caption=
Cross section diagram of sample 2, figureFileSmall=DtR+86HqS/wuDvFy/tb+5g==, figureFileBig=TS1iFdA5qfz88GcRdVtpjQ==, tableContent=null), ArticleFig(id=1218262753236664460, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=CN, label=图5, caption=
2号试样截面示意图, figureFileSmall=DtR+86HqS/wuDvFy/tb+5g==, figureFileBig=TS1iFdA5qfz88GcRdVtpjQ==, tableContent=null), ArticleFig(id=1218262753391853717, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=EN, label=Fig.6, caption=
Cross section diagram of sample 3, figureFileSmall=opx+3f3ZlW5eEr0KhyGIWQ==, figureFileBig=IWe86zEm9yJfNXjbDJmAOg==, tableContent=null), ArticleFig(id=1218262753509294238, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=CN, label=图6, caption=
3号试样截面示意图, figureFileSmall=opx+3f3ZlW5eEr0KhyGIWQ==, figureFileBig=IWe86zEm9yJfNXjbDJmAOg==, tableContent=null), ArticleFig(id=1218262753647706278, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=EN, label=Fig.7, caption=
Ultrasonic testing waveform of sample without defects, figureFileSmall=flHjUagujXv8/1UydOt4lg==, figureFileBig=BqDQ0ol6kyiRKBXrq5PNpQ==, tableContent=null), ArticleFig(id=1218262753748369580, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=CN, label=图7, caption=
试样无缺陷处超声检测波形图, figureFileSmall=flHjUagujXv8/1UydOt4lg==, figureFileBig=BqDQ0ol6kyiRKBXrq5PNpQ==, tableContent=null), ArticleFig(id=1218262753840644276, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=EN, label=Fig.8, caption=
Ultrasonic testing waveform of sample 1, figureFileSmall=0FyOGwWXpom4965yOEwA4Q==, figureFileBig=zZ2b0VLVxzARL6coQ5VReA==, tableContent=null), ArticleFig(id=1218262753966473407, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=CN, label=图8, caption=
1号试样超声检测波形图, figureFileSmall=0FyOGwWXpom4965yOEwA4Q==, figureFileBig=zZ2b0VLVxzARL6coQ5VReA==, tableContent=null), ArticleFig(id=1218262754067136711, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=EN, label=Fig.9, caption=
Ultrasonic testing waveform of sample 2, figureFileSmall=S0IIiKbafE79eww+YWO9OQ==, figureFileBig=vhMd4jn095YhmnaeI1GwYg==, tableContent=null), ArticleFig(id=1218262754167800013, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=CN, label=图9, caption=
2号试样超声检测波形图, figureFileSmall=S0IIiKbafE79eww+YWO9OQ==, figureFileBig=vhMd4jn095YhmnaeI1GwYg==, tableContent=null), ArticleFig(id=1218262754390098131, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=EN, label=Fig.10, caption=
Ultrasonic testing waveform of sample 3, figureFileSmall=rcuk6IykY5B7q59qZsKW1Q==, figureFileBig=XC/40mm5lO1tDzdUd7O4NQ==, tableContent=null), ArticleFig(id=1218262754503344347, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=CN, label=图10, caption=
3号试样超声检测波形图, figureFileSmall=rcuk6IykY5B7q59qZsKW1Q==, figureFileBig=XC/40mm5lO1tDzdUd7O4NQ==, tableContent=null), ArticleFig(id=1218262754616590564, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=EN, label=Fig.11, caption=
Normalized spectrogram of sample 1, figureFileSmall=bw7WuC5/6nNsu0pnzXyGvg==, figureFileBig=omCNv6CoqqYnqZV714voBA==, tableContent=null), ArticleFig(id=1218262754708865260, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=CN, label=图11, caption=
1号试样归一化频谱图, figureFileSmall=bw7WuC5/6nNsu0pnzXyGvg==, figureFileBig=omCNv6CoqqYnqZV714voBA==, tableContent=null), ArticleFig(id=1218262754805334263, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=EN, label=Fig.12, caption=
Normalized spectrogram of sample 2, figureFileSmall=OHMA7DX2aVc581L4FlDMqw==, figureFileBig=ko6rMZAEgbMuUb8Tuk+yZQ==, tableContent=null), ArticleFig(id=1218262754893414655, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=CN, label=图12, caption=
2号试样归一化频谱图, figureFileSmall=OHMA7DX2aVc581L4FlDMqw==, figureFileBig=ko6rMZAEgbMuUb8Tuk+yZQ==, tableContent=null), ArticleFig(id=1218262754998272260, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=EN, label=Fig.13, caption=
Normalized spectrogram of sample 3, figureFileSmall=WqwjeUaVPcavQwWtTB2oig==, figureFileBig=kmScdr4Bgwy3s+Sa+opUng==, tableContent=null), ArticleFig(id=1218262755178627338, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=CN, label=图13, caption=
3号试样归一化频谱图, figureFileSmall=WqwjeUaVPcavQwWtTB2oig==, figureFileBig=kmScdr4Bgwy3s+Sa+opUng==, tableContent=null), ArticleFig(id=1218262755258319123, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=EN, label=Table 1, caption=
Acoustic parameters of different materials, figureFileSmall=null, figureFileBig=null, tableContent=
| 材料 | 密度/(kg/m3) | 声速/(m/s) | 波长/mm | 声阻抗/(×106 kg/(m2·s)) |
|---|
| 环氧复合材料 | 2 540 | 3 618 | 1.447 2 | 9.189 72 |
| 铜 | 8 900 | 4 700 | 1.88 | 41.83 |
| 空气 | 1.29 | 330 | 1.32 | 0.000 425 7 |
), ArticleFig(id=1218262755342205206, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=CN, label=表1, caption=
不同材料的声学参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 材料 | 密度/(kg/m3) | 声速/(m/s) | 波长/mm | 声阻抗/(×106 kg/(m2·s)) |
|---|
| 环氧复合材料 | 2 540 | 3 618 | 1.447 2 | 9.189 72 |
| 铜 | 8 900 | 4 700 | 1.88 | 41.83 |
| 空气 | 1.29 | 330 | 1.32 | 0.000 425 7 |
), ArticleFig(id=1218262755426091295, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=EN, label=Table 2, caption=
Sample number and summary of its basic information, figureFileSmall=null, figureFileBig=null, tableContent=
| 试样编号 | 缺陷类型 | 引入物质 | 尺寸/mm | 试样厚度/mm |
|---|
| 1 | 裂纹 | 气孔 | 直径0.8、1.0 | 5 |
| 2 | 分层 | 中空双层聚四氟乙烯薄膜 | 20×20 | 5 |
| 3 | 金属杂质 | 铜颗粒 | 1×1×1 | 5 |
), ArticleFig(id=1218262755509977380, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=CN, label=表2, caption=
试样编号及其基本信息总结
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试样编号 | 缺陷类型 | 引入物质 | 尺寸/mm | 试样厚度/mm |
|---|
| 1 | 裂纹 | 气孔 | 直径0.8、1.0 | 5 |
| 2 | 分层 | 中空双层聚四氟乙烯薄膜 | 20×20 | 5 |
| 3 | 金属杂质 | 铜颗粒 | 1×1×1 | 5 |
), ArticleFig(id=1218262755640000813, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=EN, label=Table 3, caption=
Eigenvalues of different defects, figureFileSmall=null, figureFileBig=null, tableContent=
| 试样编号 | 缺陷类型 | 缺陷处特征值 |
|---|
| 1 | 裂纹 | 0.631 0 |
| 2 | 分层 | 1.304 8 |
| 3 | 金属杂质 | 1.129 1 |
), ArticleFig(id=1218262755723886898, tenantId=1146029695717560320, journalId=1149653034449285133, articleId=1210590157581980479, language=CN, label=表3, caption=
不同缺陷的特征值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试样编号 | 缺陷类型 | 缺陷处特征值 |
|---|
| 1 | 裂纹 | 0.631 0 |
| 2 | 分层 | 1.304 8 |
| 3 | 金属杂质 | 1.129 1 |
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