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 Status: Withdrawn · Replaced by: ASTM E Buy this standard.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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E — 06a Standard Terminology for Nondestructive Examinations1 This standard is issued under the? A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. These nondestructive testing NDT methods include: 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.
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.
ASTM Ea Standard Termninology for Nondestructive Examinations_图文_百度文库
Current edition approved May 1, Originally approved in Last previous edition approved in as E — Radiologic Testing RT is often used to examine material to detect asrm discontinuities.
If it has been interpreted as relevant, the necessary subsequent evaluation will result in the decision to accept or reject the material.
With the exception of accept and reject, which retain the meaning found in most dictionaries, all the words used in the chart are de?
The purpose of this standard is to promote a clear understanding and interpretation of the NDT standards in which they are used. See also standardization, instrument. NOTE 2—Examples include utilization of X-rays or ultrasonic waves for the purpose of determining directly or by calculation?
Nondestructive Evaluation—see Nondestructive Testing.
ASTM E – 04 Standard Terminology for Nondestructive Examinations
Nondestructive Examination—see Nondestructive Testing. Nondestructive Inspection—see Nondestructive Testing. 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?
False indications are non-relevant. This is usually done prior to an examination, but can be carried out anytime there is concern about the examination or instrument response.
See also calibration, instrument. Acoustic Emission The terms de? Acoustic emission is the recommended term for general use. Other terms that have been used in AE literature include 1 stress wave emission, 2 microseismic activity, and 3 emission or acoustic emission with other qualifying modi?
The AU method combines aspects of acoustic emission AE signal analysis with ultrasonic materials characterization techniques. AE activity, n—the presence of acoustic emission during a test. AE rms, n—the recti? AE signal end—the recognized termination e13116 an AE signal, usually de? AE signal generator—a device which can repeatedly induce a speci?
sstm AE signal start—the beginning of an AE signal as recognized by the system processor, usually de? The sources would normally be within the array. V at the preampli? NOTE 3—A channel for examining? Channels may be processed independently or in predetermined groups having similar sensitivity and frequency characteristics.
V at the sensor, before ampli?
V at the sensor before ampli? Acoustic Emission Reference Scale: This is a variant of the differential amplitude distribution, appropriate for logarithmically windowed data.
NOTE 4—Use of the term burst emission is recommended only for describing the qualitative appearance of emission signals.
NOTE 5— Use of the term continuous emission is recommended only for describing the qualitative appearance zstm emission signals. Data may be recorded with a system examination threshold lower than the evaluation threshold.
Standard Terminology for Nondestructive Examinations
For analysis purposes, dependence of measured data on the system examination threshold must be taken into consideration. Felicity effect—the presence of acoustic emission, detectable at a? Felicity effect—the presence of detectable acoustic emission at a? Felicity ratio—the ratio of the stress at which the Felicity effect occurs to the previously applied maximum stress. Kaiser effect—the absence of detectable acoustic emission at a?
NOTE 7—Several r1316 to computed location are used, including linear location, planar location, three dimensional location, and adaptive location. NOTE 8—This type of location is commonly used in leak location due to the presence of axtm emission. Some common types of continuous signal location methods include signal attenuation and correlation analysis methods. 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 time displacement data can be used with conventional hit based location techniques to arrive at a solution for the source site.
ASTM E1316 – 18a
Several approaches to source location are used, including zone asttm, computed location, and continuous location. NOTE 9—Several approaches to zone location are used, including independent channel zone location,? The voltage threshold may be user adjustable,? See also absolute coil. See also harmonic analysis and phase analysis. See also comparator coils. The depth of penetration is an asgm function of the frequency of the signal and the conductivity and permeability of the material.
Synonymous terms are standard depth of penetration and skin depth. See also aztm effect. See also differential coils. This effect generally results in the masking of discontinuities within aatm affected region. This effect is also termed the end effect.
The EDP point is approximately three times the standard depth of penetration. This quantity may be different from the permeability of the particular metal being tested in that it takes ashm account such things as the geometry of the part, the relative position of the encircling coil, asttm characteristics of the magnetic?
A constant intensity signal, irrespective of the circumferential position of a discontinuity, is indicative of electrical centering. The electrical center may be asstm from the physical center of the test coil. Coils of this type are also referred to as annular, circumferential, or feed-through coils. For eddycurrent testing described herein, the frequency is normally 1 to kHz, inclusive. ID coil—a coil or coil assembly used for electromagnetic testing by insertion into the test piece as in the case of an e316 probe for tubing.
Coils of this type are also referred to as inside coils, inserted coils, or bobbin coils. These changes from uniformity affect the electrical characteristic of the tube but may not be detrimental to the end asstm of the product. It should be noted that such noise signals may be generated by inhomogeneities in the inspected part that are not detrimental to the end use of the part.
This would include ee1316 materials and diamagnetic materials. Each property of a given material may have its own optimum frequency. The values of a-c permeability obtained for a given material depend fundamentally upon the excursion limits of dynamic excitation and induction, the method and conditions of measurement, and also upon such factors as resistivity, thickness of laminations, frequency of excitation, and so forth.
NOTE 11—The numerical value for any permeability is meaningless unless the corresponding B or H excitation level is speci? For incremental permeabilities not only must the corresponding d-c B or H excitation level be speci? These relationships are either 1 absolute permeability, which in general is the quotient of a change in magnetic induction divided by the corresponding change in magnetizing force, or 2 relative permeability, which is the ratio of the aetm permeability to the magnetic constant g m.
NOTE 12—The magnetic constant gm is a scalar quantity differing in value and uniquely determined by each electromagnetic system of units. NOTE 13—Relative permeability is a pure number which is the same in all unit systems. The value and dimension of absolute permeability depends on the system of units employed.
NOTE 14—For any ferromagnetic material, permeability is a function of the degree of magnetization. NOTE 15—Except for initial permeability,? NOTE 16—For the incremental permeabilities? D i, a numerical value is meaningless unless both the corresponding values e11316 mean excitation level B or H and the excursion range DB or DH are speci?
See also phase detection. See also standard 1. At very high frequencies, the current? See also depth of penetration. NOTE 17—Sensitivity and threshold settings usually are indicated by arbitrary numbers e316 the control panel of the testing instrument. These xstm settings differ among instruments of different types. It is, therefore, not proper to translate a numerical setting on one instrument to that of another type.
Even among instruments of the same design and from the same manufacturer, sensitivity and threshold settings may vary slightly when detecting the same discontinuity. Therefore, undue emphasis on the numerical value of sensitivity and threshold settings is not justi? Additional radiologic testing terms are found in Section H. These effects include nausea and vomiting, malaise, increased temperature, and blood changes. It consists of two protons and two neutrons, and is identical to the nucleus of a helium atom.