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ASTM E2297-04
Standard Guide for Use of UV-A and Visible Light Sources and Meters used in the Liquid Penetrant and Magnetic Particle Methods
5 стр.
Заменен
Печатное изданиеЭлектронный (pdf)
93.60 $ (включая НДС 20%)
Разработчик:
Зарубежные/ASTM
ICS:
17.180.20 Colours and measurement of light / Цветовые и световые измерение
Сборник (ASTM):
03.03 Nondestructive Testing (I): C1331 – E2373 / Неразрушающий контроль (I): C1331 – E2373
Тематика:
Nondestructive Testing
Описание
Значение и использование

UV-A and Visible light sources are used to provide adequate light levels for liquid penetrant and magnetic particle examination. Light meters are used to verify that specified light levels are available.

Fluorescence is produced by irradiating the fluorescent dyes/pigments       with UV-A radiation. The fluorescent dyes/pigments absorb the energy from the UV-A radiation and re-emit light energy in the visible spectrum. This energy transfer allows fluorescence to be observed by the human eye.

High Intensity UV-A light sources produce light intensity greater than 10,000 µW/cm2 at 38.1 cm [15 in.].

Область применения

1.1 This guide describes the use of UV-A/Visible light sources and meters used for the examination of materials by the liquid penetrant and magnetic particle processes. This guide may be used to help support the needs for appropriate light intensities and light measurement.

1.2 This guide also provides a reference:

1.2.1 To assist in the selection of light sources and meters that meet the applicable specifications or standards.

1.2.2 For use in the preparation of internal documentation dealing with liquid penetrant or magnetic particle examination of materials and parts.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Ключевые слова:
electromagnetic spectrum; UV-A exposure limits; UV-A light sources; UV-A measurement; UV-A meters; visible light contamination; visible light measurement; visible light meters; visible light sources