印刷電路板內部的微米級含銅顆粒可能導致電路短路和信號干擾等嚴重問題，從而影響電子產品的可靠性和壽命。本文針對這一問題基於有限元素分析法設計出適配渦電流檢測系統的最佳微型感測線圈探頭並針對印刷電路板內部含銅導電顆粒進行量測。本研究通過有限元素分析，評估了線圈探頭的匝數、尺寸、量測頻率及檢測樣品中導電顆粒的分佈密度等多種設計參數。模擬分析結果顯示，不同參數對線圈探頭的電磁場分佈特性和感應效率有顯著影響。為了實現最佳的系統檢測靈敏度和分辨率，研究對這些參數進行了調整和優化，並進行了實測實驗。實驗結果證明，所設計的線圈探頭能有效檢測並區分印刷電路板內部是否含有微米級含銅導電顆粒，展示出高靈敏度和高分辨率并進行多次重現性實驗進一步確保了檢測結果的可靠性，證明了本渦電流檢測系統在排除外界干擾的情況下能保持一致性和可靠性。
此外，粉末冶金多孔複合金屬生胚生胚品質不佳，會導致導致製品的硬度和均勻度降低和使產品出現裂紋或破裂。本文同樣針對該問題基於有限元素分析法通過數值模擬來探索檢測不同品質包括不同厚度和不同密度的粉末冶金壓鑄的多孔複合金屬樣品的渦電流檢測效果，並基於此模擬結果進行不同品質的金屬樣品實際量測，並根據實驗結果驗證渦電流檢測系統在多孔複合金屬品質量測中的有效性。

Micron-sized copper particles within printed circuit boards (PCBs) can cause serious issues such as circuit shorting and signal interference, thereby affecting the reliability and lifespan of electronic products. To address this problem, this paper designs an optimal miniature sensor coil probe suitable for eddy current testing systems based on finite element analysis (FEA) and measures the copper conductive particles inside PCBs. This study evaluates various design parameters of the coil probe through FEA, including the number of turns, size, measurement frequency, and the distribution density of conductive particles in the sample. The simulation analysis results indicate that different parameters significantly impact the electromagnetic field distribution characteristics and induction efficiency of the coil probe. To achieve optimal system detection sensitivity and resolution, these parameters were adjusted and optimized, followed by practical experiments. The experimental results demonstrate that the designed coil probe can effectively detect and distinguish whether there are micron-sized copper conductive particles inside PCBs, showing high sensitivity and resolution. Multiple reproducibility tests further ensured the reliability of the detection results, proving that the eddy current detection system can maintain consistency and reliability when external interference is eliminated.
Furthermore, the poor quality of powder metallurgy porous composite metal billets can lead to reduced hardness and uniformity of the products, causing cracks or fractures. This paper also addresses this issue by exploring the eddy current detection effect of porous composite metal samples of different qualities, including varying thicknesses and densities, through numerical simulation based on FEA. Based on these simulation results, actual measurements of metal samples of different qualities were conducted. The experimental results verified the effectiveness of the eddy current detection system in measuring the quality of porous composite metals.

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