Abstract:
Рассматривается возможность ультразвукового контроля литых деталей тележки грузового вагона сложной конфигурации на примере боковой рамы тележки модели 18-100. Представлены выбранные параметры контроля и схемы сканирования для различных зон контроля. Для реализации контроля с литых поверхностей, имеющих высокую шероховатость, спроектированы и произведены специальные призмы из Аквалена. В статье приведены результаты контроля образцов с искусственными и естественными дефектами. The article describes possibilities of phased array flaw detectors application for testing of railway transport units, such as cast parts of bogies of freight cars. The task was to reproduce the standard testing procedures using phased array flaw detectors and demonstrate their advantages in visibility, efficiency, repeatability, results validity. Sector scanning technique with the phased array flaw detectors OmniScan in the minimum configuration was used for the research. In the all cases acoustical images of the following reflectors were obtained within the range of selected angles: side drilled holes and natural defects in solebars. Solebar testing has been more complicated because of a form and irregularity of scanning surface and a complex profile of back surface. Application of phased arrays substantially increases testing efficiency and improves visibility of obtained results.
