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Assessment of damage detection methods in GRID-LOCK~® structures

机译：评估GRID-LOCK〜®结构中的损坏检测方法

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摘要

Bonded metallic GRID-LOCK~® structures are being adopted for a variety of aerospace applications due to their structural efficiency and damage tolerance. However, effective damage detection in these structures is complicated by a lack of interior access. In this paper, the feasibility of various non-destructive evaluation (NDE) techniques for detecting the presence, location, and magnitude of damage in GRID-LOCK~® is investigated. Experiments conducted on a GRIDLOCK~® test structure reveal that vibration-based damage detection and optical nde methods are superior to ultrasonic C-scans in detecting disbond defects. Finite-element analysis (FEA) is used to interpret experimental results and highlight the advantages of alternate NDE approaches.
机译：粘合金属GRID-LOCK〜®结构由于其结构效率和破坏耐受性而被广泛用于航空航天应用。然而，由于缺乏内部通道，这些结构中的有效损坏检测变得复杂。在本文中，研究了各种无损评估（NDE）技术用于检测GRID-LOCK〜®中损坏的存在，位置和大小的可行性。在GRIDLOCK〜®测试结构上进行的实验表明，基于振动的损伤检测和光学nde方法在检测剥离缺陷方面优于超声C扫描。有限元分析（FEA）用于解释实验结果并强调替代NDE方法的优势。

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