Improving performance of defect detection by setting skewed tolerance and joint tolerances in crimp force monitor
Abstract A Crimp Force Monitor (CFM) detects defects by whether the crimp force curve of the force sensor exceeds the set tolerance, with the goal of low defect miss rate and false alarm rate. In this study, typical defects made by hand are crimped with an automatic crimping machine together with go...
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| Language: | English |
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Wiley
2024-11-01
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| Series: | Engineering Reports |
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| Online Access: | https://doi.org/10.1002/eng2.12912 |
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| author | Liancheng Zeng Dali Qin |
| author_facet | Liancheng Zeng Dali Qin |
| author_sort | Liancheng Zeng |
| collection | DOAJ |
| description | Abstract A Crimp Force Monitor (CFM) detects defects by whether the crimp force curve of the force sensor exceeds the set tolerance, with the goal of low defect miss rate and false alarm rate. In this study, typical defects made by hand are crimped with an automatic crimping machine together with good products to obtain continuous data of the crimping force curves and to process the data. For the peak and area deviations of the crimp force curve, the good products show skew‐normal distribution, and the defective samples show outliers and different deviation intensities in the positive and negative directions. Furthermore, by manually intervening in the batch production of multiple groups of defects and comparing the defect miss rate and false alarm rate of CFM with different tolerance settings, the peak skewed tolerance, joint loose tolerance and joint skewed tolerance tree settings can meet a low defect miss rate and low false alarm rate at the same time. The group test results verify the skew‐normal distribution of crimping force curve deviation rate and the characteristics of deviation intensities, providing reference for the tolerance setting of CFM in automated terminal crimping production. |
| format | Article |
| id | doaj-art-d655df5e5a864a78b627b1442492d851 |
| institution | OA Journals |
| issn | 2577-8196 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Engineering Reports |
| spelling | doaj-art-d655df5e5a864a78b627b1442492d8512025-08-20T02:18:35ZengWileyEngineering Reports2577-81962024-11-01611n/an/a10.1002/eng2.12912Improving performance of defect detection by setting skewed tolerance and joint tolerances in crimp force monitorLiancheng Zeng0Dali Qin1College of Information and Intelligence Hunan Agricultural University Changsha ChinaCollege of Information and Intelligence Hunan Agricultural University Changsha ChinaAbstract A Crimp Force Monitor (CFM) detects defects by whether the crimp force curve of the force sensor exceeds the set tolerance, with the goal of low defect miss rate and false alarm rate. In this study, typical defects made by hand are crimped with an automatic crimping machine together with good products to obtain continuous data of the crimping force curves and to process the data. For the peak and area deviations of the crimp force curve, the good products show skew‐normal distribution, and the defective samples show outliers and different deviation intensities in the positive and negative directions. Furthermore, by manually intervening in the batch production of multiple groups of defects and comparing the defect miss rate and false alarm rate of CFM with different tolerance settings, the peak skewed tolerance, joint loose tolerance and joint skewed tolerance tree settings can meet a low defect miss rate and low false alarm rate at the same time. The group test results verify the skew‐normal distribution of crimping force curve deviation rate and the characteristics of deviation intensities, providing reference for the tolerance setting of CFM in automated terminal crimping production.https://doi.org/10.1002/eng2.12912crimp force monitorjoint tolerancequality detectionskewed tolerance |
| spellingShingle | Liancheng Zeng Dali Qin Improving performance of defect detection by setting skewed tolerance and joint tolerances in crimp force monitor Engineering Reports crimp force monitor joint tolerance quality detection skewed tolerance |
| title | Improving performance of defect detection by setting skewed tolerance and joint tolerances in crimp force monitor |
| title_full | Improving performance of defect detection by setting skewed tolerance and joint tolerances in crimp force monitor |
| title_fullStr | Improving performance of defect detection by setting skewed tolerance and joint tolerances in crimp force monitor |
| title_full_unstemmed | Improving performance of defect detection by setting skewed tolerance and joint tolerances in crimp force monitor |
| title_short | Improving performance of defect detection by setting skewed tolerance and joint tolerances in crimp force monitor |
| title_sort | improving performance of defect detection by setting skewed tolerance and joint tolerances in crimp force monitor |
| topic | crimp force monitor joint tolerance quality detection skewed tolerance |
| url | https://doi.org/10.1002/eng2.12912 |
| work_keys_str_mv | AT lianchengzeng improvingperformanceofdefectdetectionbysettingskewedtoleranceandjointtolerancesincrimpforcemonitor AT daliqin improvingperformanceofdefectdetectionbysettingskewedtoleranceandjointtolerancesincrimpforcemonitor |