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 Status: Withdrawn · Replaced by: ASTM E Buy this standard.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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NOTE 8—This type of location is commonly used in leak location due to the presence of continuous emission. AE signal end—the recognized termination of an AE signal, usually de? NOTE 5— Use of the term continuous emission is recommended only for describing the qualitative appearance of emission signals.

One candela produces 1 lumen of luminous? By monitoring the AE signal magnitudes of the continuous signal at various points along the object, the source can be determined based on the highest magnitude or by interpolation or extrapolation of multiple readings. The common types are as follows: Also called halogen-sensitive leak detector or halide leak detector.


ASTM E – 18a Standard Terminology for Nondestructive Examinations

C-scan—an ultrasonic data presentation which provides a plan view of the test object, and discontinuities therein. For incremental permeabilities not only must the corresponding d-c B or H excitation level be speci? NC is the percent background? This is a variant of the differential amplitude distribution, appropriate for logarithmically windowed data.

ASTM Ea Standard Termninology for Nondestructive Examinations_图文_百度文库

The instrument may consist of mirrors, prisms, lenses, optic-? Penning gauge—see ionization vacuum gauge.

The coated surface is placed next to the? The time displacement data can be used with conventional hit based location techniques to arrive at a solution for the source site.

Sometimes called exhaust tubulation. Bayard-Alpert ionization gauge—see ionization vacuum gauge.

Historical Version s – view previous versions of standard. S is the percent background? Typical recording media used in holography are silver halide? Current edition approved May 1, In many outdoor applications, visibility is de? AE activity, n—the presence of acoustic emission during a test.

At the end of the test period the chamber is opened to a leak detector which is sensitive to the gas. The mass spectrometer may be used as a vacuum gauge that relates an output which is proportioned to the partial pressure of a speci? AE signal start—the beginning of an AE signal as recognized by the system processor, usually de?


Last previous edition approved in as E — Three kinds of screens in common use are: The discharge tube is a transparent tube in which the color and form of a cold-cathode discharge without the presence of a magnetic?

A constant intensity signal, irrespective of the circumferential position of a discontinuity, is indicative of electrical centering. IQI sensitivity—in radiography, the minimum discernible image and the designated hole in the plaque-type, or the designated wire image in the wire type image quality indicator.

ASTM E1316 – 18a

It is, therefore, not proper to translate a numerical setting on one instrument to that of another type. At very high frequencies, the current?

sstm P is the percent background exposure caused by pair production in 2 mm of lead. The value and dimension of absolute permeability depends on the system of units employed.

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