This standard is issued under the fixed designation E ; the number .. 3 The designations in parentheses following the terms indicate the ASTM standards. Standard Terminology for Nondestructive Examinations. Status: Withdrawn · Replaced by: ASTM E Buy this standard. Price: SEK. PDF. Add to cart. ASTM Ea Standard Terminology for Nondestructive – Free download as PDF File .pdf) or read online for free.

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For small detectors, the detector angular subtenses or projections, a and b, are de? Kaiser effect—the absence of detectable acoustic emission at a? For uniformity and consistency in E07 nondestructive testing standards, Committee E07 encourages the use of the term examination and its derivatives when describing the application of nondestructive test methods.

This type of equipment usually operates at energies between 10 and 31 MEV. A constant intensity signal, irrespective of the circumferential position of a discontinuity, is indicative of electrical centering. NOTE 5— Use of the term continuous emission is recommended only for describing the qualitative appearance of emission signals. See also differential coils. It does not necessarily coincide with the geometrical cross-sectional area pr 2.

AE signal end—the recognized termination of an AE signal, usually de? NC—effective thermal neutron content or neutron radiographic contrast. SI unit of luminous?

In some tests, the reference beam may be re? The velocity of the wave is dependent on the mode of propagation and the product of the material thickness and the examination frequency. These changes from uniformity affect the electrical characteristic of the tube but may not be detrimental to the end use of the product.

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Nondestructive Testing NDTn—the development and application of technical methods to examine materials or components in ways that do not impair future usefulness and serviceability in order to detect, locate, measure and evaluate? The response of mixture of a tracer and nonhalogen gases will be the response factor of the tracer divided by the fraction of tracer gas in the test gas.

The Bayard-Alpert ionization gauge employs a tube with an electrode structure designed to minimize X-ray-induced electron emission from the ion collector. UV fading—the reduction of brightness of a? Acoustic emission is the recommended term for general use. Additional radiologic testing terms are found in Section H.

NOTE 12—The magnetic constant gm is a scalar quantity differing in value and uniquely determined by each electromagnetic system of units.

The coherence length is related to the width of the spectral line emitted from the laser: These nondestructive testing NDT methods include: Measured in the SI system by lux. NOTE 19—In the case where the recording medium is placed directly in contact with the object being examined, the distance is equal to the thickness of the object.

D i, a numerical value is meaningless unless both the corresponding values of mean excitation level B or H and the excursion range DB or DH are speci? The path is usually shaped like the letter V.

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The mass spectrometer may be used as a vacuum gauge that relates an output which is proportioned to the partial pressure of a speci? Also called a sniffing probe. Sometimes called the back pressure, backing pressure, outlet pressure, exhaust pressure, or discharge pressure.

ASTM E – 18a – Standard Terminology for Nondestructive Examinations

In practice, sources that are not extended sources are considered to be point sources; see point source. DAC distance amplitude correction swept ast, time corrected gain, time variable gain, and so forth — electronic change of ampli?

See minimum detectable leakage rate. Measurement of travel times for the forward re?

ASTM E1316 – 18a

The purpose of this standard is to promote a clear understanding and interpretation of the NDT standards in which they are used.

Typical recording media used in holography are silver halide? Radiologic Testing RT is often used to examine material to detect internal discontinuities.

For analysis purposes, dependence of measured data on the system examination threshold must be taken into consideration. Sometimes called the backing pump.

The instrument may consist of mirrors, prisms, lenses, optic-? NOTE 21—It xstm also be used to evaluate liquid penetrant techniques, liquid penetrant systems, or test conditions. A number in parentheses indicates the year of last reapproval.

S is the percent background?