Научные статьи \ Прикладные науки. Медицина. Технология \ Инженерное дело. Техника в целом \ Испытания материалов. Товароведение. Силовые станции. Общая энергетика

Ультразвуковой контроль соединения металл - пластик

Ультразвуковой контроль соединения металл - пластик

Автор: Мильцев Г.Д.

Журнал: Теория и практика современной науки @modern-j

Рубрика: Основной раздел

Статья в выпуске: 4 (94), 2023 года.

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Клеевые разнородные материалы вызывают большой интерес в аэрокосмической и автомобильной промышленности из-за их способности обеспечивать превосходные конструкционные характеристики и уменьшать вес для экономии энергии. Несмотря на обширную работу, проделанную для исследования, по-прежнему сложно обнаружить такие дефекты в соединениях разнородных материалов из-за больших различий в свойствах металлов и композитов, а также многослойной структуры компонента. Целью данной работы является улучшение обнаруживаемости дефектов в адгезионно скрепленном алюминии и пластике, армированном углеродным волокном (углепластик), путем разработки усовершенствованного алгоритма последующей обработки. Было определено, что анализ множественных отражений имеет высокий потенциал для улучшения обнаруживаемости в соответствии с результатами, полученными в результате инспекционного моделирования и оценки граничных характеристик. Влияние такого очень важного параметра, как кривизна образца, может быть устранено путем выравнивания времени прихода сигналов, отраженных от образца. В случае клеевого соединения устраняется высокая концентрация напряжений и обеспечивается равномерное распределение напряжений. Другими преимуществами клеевого соединения являются его устойчивость к усталости, а также способность сохранять структурную целостность соединяемых материалов, соединять разнородные материалы и уменьшать вес конструкции.

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Короткий адрес: https://sciup.org/140300699

IDR: 140300699

Ultrasonic inspection of metal plastic connection

Adhesive heterogeneous materials are of great interest in the aerospace and automotive industries because of their ability to provide excellent structural characteristics and reduce weight to save energy. Despite the extensive work done for the study, it is still difficult to detect such defects in compounds of dissimilar materials due to the large differences in the properties of metals and composites, as well as the multilayer structure of the component. The aim of this work is to improve the detectability of defects in adhesive bonded aluminum and plastic reinforced with carbon fiber (carbon fiber) by developing an improved algorithm for subsequent processing. It was determined that the analysis of multiple reflections has a high potential for improving detectability in accordance with the results obtained as a result of inspection modeling and evaluation of boundary characteristics. The influence of such a very important parameter as the curvature of the sample can be eliminated by equalizing the arrival time of the signals reflected from the sample. In the case of an adhesive joint, a high stress concentration is eliminated and a uniform stress distribution is ensured. Other advantages of the adhesive joint are its resistance to fatigue, as well as the ability to maintain the structural integrity of the materials being joined, connect dissimilar materials and reduce the weight of the structure.

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