Study guides, Class notes & Summaries

low voltage x-ray tubes are generally fitted with windows made of: - beryllium a monochromatic x-ray beam is: - a beam consisting of a single wavelength the general method of producing x-rays involves the sudden deceleration of high velocity electrons in a solid body called a: - target if it were necessary to radiograph a 7" thick steel product, which gamma ray source would most likely be used? - co-60 a co-60 gamma source has an approximate practical thickness limit of: - 9" of steel ...

Although there may be other reasons for using calcium tungstate screens in industrial radiography, they are most usually used to: - Decrease exposure time In film radiography, pentrameters are usually placed: - on the source side of the test object The penetrating ability of an x-ray beam is governed by: - Kilovoltage Co-60 used in nondestructive testing emits: - Gamma rays A densitometer is an instrument for measuring: - film density Three liquids which are essential to process an expo...

Acoustic Emission Testing.. Acoustic Emission (AE) refers to the generation of transient elastic waves produced by a sudden redistribution of stress in a material. When a structure is subjected to an external stimulus (change in pressure, load, or temperature), localized sources trigger the release of energy, in the form of stress waves, which propagate to the surface and are recorded by sensors. With the right equipment and setup, motions on the order of picometers (10 -12 m) can be ...

SNT-TC-1A is not intended to be used as a strict specification. - Which of the following statements is true concerning the usage of SNT-TC-1A? Written and stated in general terms - The SNT-TC-1A Interpretation Panel will respond to inquiries about SNT-TC-1A. The inquiry must be: May engage an outside service but is, nevertheless, responsible for the certification of the company's NDT personnel - With regard to the training of NDT personnel, the employer: To establish their own writte...

7.12 Liquid penetrant testing used for maintenance testing of cracks on aircraft must have the highest sensitivity. Which of the following penetrant techniques is the most sensitive? - Answer-Type I, Method B, level 3 penetrant, solvent removed, solvent suspended developer 7.13 The first step in evaluating the use of penetrant on a plastic material is to: - Answer-check the compatibility of the penetrant test materials with the plastic 7.14 Which of the following nonmetallic items can be t...

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