Abstract Conveying raw materials is essential in heavy industries and mostly accompanied by wear. Impinging of materials cause energy transfer, generating elastic waves. In this work, an acoustic emission (AE) measurement system and an accelerometer for vibrations were utilised to assess different wear phenomena. A 3-fold approach was undertaken: i) identification of characteristic acoustic damage features in a model impact-test; ii) impact tests with raw materials on wear plates in lab-scale; iii) field test of the measurement systems in the harsh environment of a steel plant. Results showed clear frequency changes with decreasing plate thickness. Micro-cracking was indicated by high frequencies, showing the first stage of wear. AE and vibration measurements distinguished raw materials clearly in both, close-to-reality and field testing.

中文翻译：

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输送系统中的磨损强度评估——一种声发射和振动测量方法

摘要 输送原材料在重工业中是必不可少的，而且大多伴随着磨损。材料的碰撞引起能量转移，产生弹性波。在这项工作中，利用声发射 (AE) 测量系统和振动加速度计来评估不同的磨损现象。采取了 3 种方法：i) 在模型冲击试验中识别特征声学损伤特征；ii) 实验室规模的耐磨板原材料冲击试验；iii) 在钢铁厂的恶劣环境中对测量系统进行现场测试。结果表明，随着板厚度的减少，频率会发生明显变化。微裂纹由高频表示，表明磨损的第一阶段。AE 和振动测量在接近现实和现场测试中都能清楚地区分原材料。