|
Subject: time-of-flight corrected gain tech. В кратком описании функций ультразвукового дефектоскопа в разделе related software features есть строка- TCG and DAC Я нашла расшифровку: time-of-flight corrected gain и distance-amplitude correction. Как их можно перевести? Спасибо |
|
Есть предположение, что это: TCG - временная регулировка чувствительности Жду подтверждения или опровержения от мэтров |
|
twinned columnar growth (TCG) in aluminum alloys. BACKGROUND ART Twinned columnar growth (TCG) structure in an aluminum alloy is one of the more deleterious internal structures. It is an anisotropic structure formed as a result of a highly oriented growth pattern and it results in variations of strength, ductility and elasticity of an aluminum alloy. TCG consists of many parallel continuous thin lamellae that are approximately 100 micrometers thick and several centimeters long. Each lamella comprises a twinned crystal with the twinned boundary coherent along the <111> plane and non-coherent at the edges. Growth usually occurs in the <112> direction. The variations of strength, ductility and elasticity of an aluminum alloy due to TCG is a function of the orientation of the growth direction with respect to the tensile testing direction. When the growth direction is parallel with the gauge length of the tensile specimen, strength and ductility is high. When the growth direction is oriented normal to the gauge length, strength is reduced and ductility approaches zero. Current methods for testing for the presence of internal structural anisotropies, such as TCG, are quite expensive and time consuming. The most commonly employed methods are to scalp or surface machine the ingot, polish and then etch the exposed surface. However, these methods do not test for TCG at a depth below the scalped surface of the metal. In addition, testing is not performed at multiple levels because multiple transverse section would be needed and there would be less metal for fabrication to a final product. As a result of current testing procedures, TCG may remain undetected until after additional time and capital has been used to work the ingot into a wrought product. Но по русский как это называется пока точно не нашёл |
|
TCG - Временная корректировка усиления DAC - Дистанционно-амплитудная корректировка TCG как twinned columnar growth здесь не в дугу, вариант перевода: рост двойниковых столбчатых кристаллов |
| You need to be logged in to post in the forum |