Optimization Design of Ultrasonic Nondestructive Testing Accuracy Based on a Dual-Probe Cooperative Detection System
基于双探头协同检测系统的超声波无损探伤精度优化设计

摘要

超声波无损探伤技术在工业检测领域占据重点地位，其检测精度直接决定了结构安全评估的可靠性。传统单探头 检测模式在复杂几何形貌及微小缺陷识别上存在固有局限，难以满足高精度检测需求。双探头协同检测系统通过发射 与接收探头的空间安排优化及信号融合方法，明显提升了声场包含范围与信噪比。本文专注于于双探头协同机制下的 声场干涉规律、波束合成算法及多源数据融合方法，深入剖析影响检测精度的关键物理因素。通过打造理论模型与优 化设计流程，提出一套能够自适应调整探头间距与角度的协同检测架构，主要是为了从物理层到算法层实现探测精度 的系统性跃升，为高端装备制造提供坚实的无损检测技术支撑。

Abstract

Ultrasonic non-destructive testing (NDT) plays a pivotal role in industrial inspection, and its detection accuracy directly determines the reliability of structural safety assessment. The conventional single-probe detection method has inherent limitations in identifying micro-defects and inspecting components with complex geometric profiles, which makes it unable to meet high-precision detection requirements. By optimizing the spatial layout of transmitting and receiving probes and adopting signal fusion methods, the dual-probe cooperative detection system effectively expands the sound field coverage and improves the signal-to-noise ratio. This paper focuses on the sound field interference rules, beamforming algorithms and multi-source data fusion methods under the dual-probe cooperation mechanism, and thoroughly analyzes the key physical factors affecting detection accuracy. By establishing theoretical models and optimal design procedures, a cooperative detection framework capable of adaptively adjusting probe spacing and angles is proposed. It aims to achieve a systematic improvement in detection accuracy from the physical layer to the algorithm layer, and provide a solid technical support for non-destructive testing in the manufacturing of high-end equipment.