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The purpose is to study the vertical linear uncertainty of ultrasonic flaw detectors. Firstly, introduce the specific instrument models and technical parameters, analyze the basis and methods for evaluating the vertical linear uncertainty of ultrasonic flaw detectors, and conduct uncertainty evaluation through modeling. Finally, issue a vertical linear uncertainty report and propose the key points for calibrating the ultrasonic flaw detector calibration device. Intended to provide reference for ultrasonic detection personnel, master the exploration skills of vertical linear uncertainty of ultrasonic flaw detectors, truly optimize the quality and performance of ultrasonic flaw detectors, and truly play its functional role.
, correspAuthors=Si-Yang HUANG, authorNote=null, correspAuthorsNote=
*HUANG Si-Yang, Master, Engineer, Jiangxi Provincial Inspection, Testing and Certification Institute, Nanchang 330052, China. E-mail:
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以研究超声探伤仪垂直线性不确定度为目的。先介绍围绕具体的仪器型号及技术参数,具体分析超声探伤仪垂直线性不确定度评定依据及方法,并以建模方式进行不确定度评定,最后出具垂直线性不确定度报告,提出超声探伤仪检定装置校准的要点。旨在为超声探测人员提供借鉴,掌握超声探伤仪垂直线性不确定度的探究技巧,真正优化超声探伤仪的质量与性能,真正发挥其功能作用。
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Working principle of ultrasonic flaw detector, figureFileSmall=7ltObzkm2iNoXfzdjsDxcg==, figureFileBig=n2811D8xjCFrXIdiZqDUTA==, tableContent=null), ArticleFig(id=1156967604976967877, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967533111762949, language=CN, label=图 1, caption=
超声探伤仪工作原理, figureFileSmall=7ltObzkm2iNoXfzdjsDxcg==, figureFileBig=n2811D8xjCFrXIdiZqDUTA==, tableContent=null), ArticleFig(id=1156967605044076743, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967533111762949, language=EN, label=Fig. 2, caption=
Calibration device for CTJ-5A ultrasonic flaw detector, figureFileSmall=X+lDc6wXMgyniKof9ydW0g==, figureFileBig=6b7IEphOeUthZDCD63oNoA==, tableContent=null), ArticleFig(id=1156967605098602697, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967533111762949, language=CN, label=图 2, caption=
CTJ-5A 型超声探伤仪检定装置, figureFileSmall=X+lDc6wXMgyniKof9ydW0g==, figureFileBig=6b7IEphOeUthZDCD63oNoA==, tableContent=null), ArticleFig(id=1156967605161517259, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967533111762949, language=EN, label=Fig. 3, caption=
Test connection between CTJ-5A ultrasonic flaw detector and calibration device, figureFileSmall=dVrKenb8EJPN/lagPBRuwg==, figureFileBig=Um48mo2TQJtnPf7Og3SSRQ==, tableContent=null), ArticleFig(id=1156967605228626124, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967533111762949, language=CN, label=图 3, caption=
CTJ-5A 型超声探伤仪与检定装置测试连接, figureFileSmall=dVrKenb8EJPN/lagPBRuwg==, figureFileBig=Um48mo2TQJtnPf7Og3SSRQ==, tableContent=null), ArticleFig(id=1156967605308317901, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967533111762949, language=EN, label=Table 1, caption=
Technical parameters of the calibration device for CTJ-5A ultrasonic flaw detector, figureFileSmall=null, figureFileBig=null, tableContent=
| 类别 | 参数 |
| 频率范围 | 0.01~20 MHz |
| 信号幅值范围 | $-{55}\sim +{23}\mathrm{\;{dB}}$ |
| 衰减器误差 | 0.5%*A (衰减量)$\pm {0.02}\mathrm{\;{dB}}$ |
| 声程范围 | 50~6000 mm |
| 声速范围 | 1000~9999 m/s |
), ArticleFig(id=1156967605371232462, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967533111762949, language=CN, label=表 1, caption=
CTJ-5A 型超声探伤仪检定装置技术参数, figureFileSmall=null, figureFileBig=null, tableContent=
| 类别 | 参数 |
| 频率范围 | 0.01~20 MHz |
| 信号幅值范围 | $-{55}\sim +{23}\mathrm{\;{dB}}$ |
| 衰减器误差 | 0.5%*A (衰减量)$\pm {0.02}\mathrm{\;{dB}}$ |
| 声程范围 | 50~6000 mm |
| 声速范围 | 1000~9999 m/s |
), ArticleFig(id=1156967605425758415, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967533111762949, language=EN, label=Table 2, caption=
The setup of CTJ-5A ultrasonic flaw detector, figureFileSmall=null, figureFileBig=null, tableContent=
| 内容 | 设置 |
| 工作方式 | 双 |
| 抑制 | 0% |
| 宽带 | 0.5~4 MHz |
| 调节频率 | ${2.5}\mathrm{{MHz}}$ |
| 调节按钮 | 衰减按钮 |
), ArticleFig(id=1156967605471895760, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967533111762949, language=CN, label=表 2, caption=
CTJ-5A 型超声探伤仪的设置, figureFileSmall=null, figureFileBig=null, tableContent=
| 内容 | 设置 |
| 工作方式 | 双 |
| 抑制 | 0% |
| 宽带 | 0.5~4 MHz |
| 调节频率 | ${2.5}\mathrm{{MHz}}$ |
| 调节按钮 | 衰减按钮 |
), ArticleFig(id=1156967605543198929, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967533111762949, language=EN, label=Table 3, caption=
Comparison between actual measured values and theoretical values of vertical linearity, figureFileSmall=null, figureFileBig=null, tableContent=
| 衰减量 (dB) | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 |
| 理论值 (%) | 100 | 81.5 | 66.2 | 50.2 | 39.7 | 31.8 | 19.0 | 15.4 |
| 实测值 (%) | 100 | 80.5 | 66.5 | 50.1 | 39.9 | 32.0 | 19.0 | 15.2 |
| 差值 | 0 | 0.5 | -0.3 | -0.1 | 0.2 | -0.2 | 0 | 0.2 |
), ArticleFig(id=1156967605606113490, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967533111762949, language=CN, label=表 3, caption=
垂直线性实际测量值与理论值比较, figureFileSmall=null, figureFileBig=null, tableContent=
| 衰减量 (dB) | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 |
| 理论值 (%) | 100 | 81.5 | 66.2 | 50.2 | 39.7 | 31.8 | 19.0 | 15.4 |
| 实测值 (%) | 100 | 80.5 | 66.5 | 50.1 | 39.9 | 32.0 | 19.0 | 15.2 |
| 差值 | 0 | 0.5 | -0.3 | -0.1 | 0.2 | -0.2 | 0 | 0.2 |
), ArticleFig(id=1156967605660639443, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967533111762949, language=EN, label=Table 4, caption=
Induction of standard uncertainty of input quantity, figureFileSmall=null, figureFileBig=null, tableContent=
| 标准不确定度 分量 $\mathrm{u}\left({\mathrm{x}}_{\mathrm{i}}\right)$ | 不确定度来源 | 标准 不确定度 | ${\mathrm{C}}_{\mathrm{i}}$ | $\left|{\mathrm{c}}_{\mathrm{i}}\right|\cdot \mathrm{u}\left({\mathrm{x}}_{\mathrm{i}}\right)$ | ${\mathrm{V}}_{\mathrm{i}}$ |
| $\mathrm{u}\left({\Delta }_{+ }\right)$ | 测量重复 视差 标准衰减器的 不确定度 | 0.65% | 1 | 0.65% | 50 |
| $\mathrm{u}\left(\Delta \right)$ | 测量重复 视差 标准衰减器的 不确定度 | 0.65% | -1 | 0.65 | 50 |
), ArticleFig(id=1156967605719359703, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967533111762949, language=CN, label=表 4, caption=
输入量的标准不确定度归纳, figureFileSmall=null, figureFileBig=null, tableContent=
| 标准不确定度 分量 $\mathrm{u}\left({\mathrm{x}}_{\mathrm{i}}\right)$ | 不确定度来源 | 标准 不确定度 | ${\mathrm{C}}_{\mathrm{i}}$ | $\left|{\mathrm{c}}_{\mathrm{i}}\right|\cdot \mathrm{u}\left({\mathrm{x}}_{\mathrm{i}}\right)$ | ${\mathrm{V}}_{\mathrm{i}}$ |
| $\mathrm{u}\left({\Delta }_{+ }\right)$ | 测量重复 视差 标准衰减器的 不确定度 | 0.65% | 1 | 0.65% | 50 |
| $\mathrm{u}\left(\Delta \right)$ | 测量重复 视差 标准衰减器的 不确定度 | 0.65% | -1 | 0.65 | 50 |
), ArticleFig(id=1156967605878743261, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967533111762949, language=EN, label=Table 5, caption=
Joint testing results, figureFileSmall=null, figureFileBig=null, tableContent=
| 分类 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 垂直 (%) | 31.8 | 31.7 | 31.5 | 31.4 | 31.5 | 31.6 | 31.3 | 31.2 | 31.4 | 31.3 |
| 测量值 x (dB) | 9.97 | 10.05 | 10.04 | 10.04 | 10.08 | 10.05 | 10.06 | 10.05 | 10.07 | 10.09 |
), ArticleFig(id=1156967605950046431, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1156967533111762949, language=CN, label=表 5, caption=
联测结果, figureFileSmall=null, figureFileBig=null, tableContent=
| 分类 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 垂直 (%) | 31.8 | 31.7 | 31.5 | 31.4 | 31.5 | 31.6 | 31.3 | 31.2 | 31.4 | 31.3 |
| 测量值 x (dB) | 9.97 | 10.05 | 10.04 | 10.04 | 10.08 | 10.05 | 10.06 | 10.05 | 10.07 | 10.09 |
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