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 Status: Withdrawn · Replaced by: ASTM E Buy this standard.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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A-scan—a method of data presentation utilizing a horizontal base line asmt indicates distance, or time, and a vertical de? A superscript epsilon e indicates an editorial change since the last revision or reapproval. S is the percent background? A constant intensity signal, irrespective of the circumferential position of a discontinuity, is indicative of electrical centering. The sources would normally be within the array.
See also halogen leak detector 2. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. However, for the purpose of this standard, this word provides a convenient descriptive term for halogen-containing d1316.
Standard Terminology for Nondestructive Examinations
d1316 The discharge tube is a transparent tube in which the color and form of a ee1316 discharge without the presence of a magnetic? If it has been interpreted as relevant, the necessary subsequent evaluation will result in the decision to accept or reject the material.
Since the ejected electron has short range in most materials, it is not considered part of the scattered radiation. The coherence length is related to the width of the spectral line emitted from the laser: See also comparator coils.
This effect generally results in the masking of discontinuities within the affected region. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. The Bayard-Alpert ionization gauge employs a tube with an electrode structure designed to minimize X-ray-induced electron ast, from the ion collector. Historical Version s – view previous versions of standard.
The coated surface is placed next to the? A line pair test pattern consisting of one or more pairs of equal width, high contrast lines and spaces is utilized to determine the maximum density of lines and spaces that can be successfully imaged.
ASTM E – 18a Standard Terminology for Nondestructive Examinations
In outdoor applications it usually is de? Data may be recorded with a system examination threshold lower than the evaluation threshold. B-scan presentation—a means of ultrasonic data presentation which displays a cross section of the specimen indicating the approximate length as detected per scan of re? Leakage rates are expressed in various units such as pascal cubic metres per second or pascal litres per second see Table 3.
A process control radiograph may be used to determine image quality parameters in circumstances of large or unusual test qstm geometry. One curie is equivalent to 3. Also known as a penetrameter disparaged. Phillips ionization gauge—see ionization vacuum gauge. In this case, any object information contained in the reference beam is cancelled in the object beam by the interference between the astk beam and the reference beam.
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. Radiologic Testing RT is often used to examine material to detect internal discontinuities. There are, however, appropriate exceptions when the term test and its derivatives may be used to describe the application of a nondestructive test, such as measurements which produce a numeric result for example, when using the leak testing method to perform a leak test on a component, or an ultrasonic measurement of velocity.
In the free state outside of the nucleus, the neutron is unstable having a half-life of approximately 10 min. The device generally consists of a nameplate, connector, case, backing, piezoelectric element, wearface, or lens, or wedge. NOTE 24—Dynamic range may be stated as the numerical value of the ratio; however, this is usually expressed in decibels.
This is usually done prior to an examination, but can be carried out anytime there is concern about the examination or instrument response. The term is used to describe single crystal piezoelectrics as well as polycrystalline piezoelectrics, such as ferroceramics. For analysis purposes, dependence of measured data on the system examination sstm must be taken into consideration. Expressed in scale divisions per unit time.
The instrument varies in complexity from spot radiometers to two-dimensional real-time imaging systems. S—effective scattered neutron content. E — 06a Standard Terminology for Nondestructive Examinations1 This standard is issued under the?
Normally expressed in decibel per unit length. Additional radiologic testing terms are found in Section H.