ASTM E428 PDF

January 1, 2020 By:

Designation: E – 00 An American National Standard. Standard This practice covers a procedure for fabrication and ASTM Standards: control of. ASTM Distance-Amplitude #3, #5, #8 FBH Blocks (set of. 19). 9. EDM Notches . amplitude. Specifications: ASTM E, ASTM. E Calibration. Application. ASTM E – 00 – Standard Practice for Fabrication and Control of Steel Reference Blocks Used in.

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e248 D—Hole diameter tolerance At frequencies such as 5. Where several sets and types of blocks are being used, a serial number identi? Your comments are 4e28 either for revision of this satm or for additional standards and should be addressed to ASTM International Headquarters.

Note 2 — Practice E and Guide E also describe procedures for selecting material, fabricating blocks, and checking response. The curve may vary when the examination is performed at other frequencies with different diameter search units and different water path distances or if a contact test method is used.

Additional supplemental requirements astmm be needed when using this practice to fabricate reference blocks from other types of materials or with larger diameter holes. Checking Physical Characteristics 7. Serial numbers are important when comparing sets of blocks to their respective response curves and to other sets of blocks. Last previous edition E — The reference blocks described are suitable for use with either the direct-contact method or immersion pulse-echo ultrasonic methods.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Link to Active This link will always route to the current Wstm version of the standard. On samples that are to have FBHs smaller than 3? Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Current edition approved July 10, However, the coating must not signi?

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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NOTE 2—This practice may be used to produce blocks with? Unlike this practice, Practice E has requirements for evaluation relative to a speci? Careful attention must be given to the squareness of corners of the cutter, the slightest radius reduces the re?

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Summary of Practice 4. It is the responsibility of the user of this standard to establish appro- 1 This practice is under the jurisdiction of ASTM Committee E07 on Nondestructive Testing and is the direct responsibility of Subcommittee E Comparison asm at other frequencies or with uncalibrated instruments will not necessarily give the same relationships shown in this practice. This practice, however, must not be confused with, nor does it supersede Practice Especi?

Active view current version of standard.

ASTM E428 – 08(2013)

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? A superscript epsilon e indicates an editorial change since the last revision or reapproval.

This practice shall in no way preclude the specification or addition of any supplemented requirements as deemed necessary for the specific application. Note 1 — Use of flat-surface reference blocks may not be suitable for cylindrical materials 3 2. An adequate air gap must be maintained at the hole bottom. The values given in parentheses are mathematical conversions to SI units that are provided for information astmm and are not considered standard.

The grain size, heat treat condition, physical and chemical composition, surface? It must be recognized however that there are limitations on the size hole that may be replicated and f428. This practice shall in no way preclude the specification asgm addition of any supplemented requirements as deemed necessary for the specific application.

ASTM E – 00_百度文库

The machined counterbore may be omitted if this plugging technique is used. Without changing any examination parameters, the ultrasonic response from the remaining blocks with both smaller and larger size re? The examination instruments, frequency, and search unit used in the evaluation of the raw material intended for aztm fabrication of the reference blocks shall be comparable to that used in 4e28 examination of the production material.

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Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. The acoustic noise awtm from the material is not to be confused with inherent electrical instrument noise often observed when the system sensitivity is adjusted to its maximum level range. The astmm machining sequence is recommended: This practice, however, must not be confused with, nor does it supersede Practice Especifically governing the fabrication and evaluation of T6 aluminum alloy ultrasonic standard reference blocks.

The replica shall indicate that the hole bottom is? This practice shall in no way preclude the speci? Under no circumstances may the E248 be altered to change the ultrasonicresponse characteristics of the reference block. In asfm of materials that are acoustically transparent to the extent that this requirement cannot be satis?

Active view current version of standard Translated Standard: If the ultrasonic-response characteristics are to be established by immersion techniques, the drilled? The reference blocks described are suitable for use with either the direct-contact method or immersion satm ultrasonic methods.

Additional procedures and controls may be required when fabricating reference blocks from other than carbon or alloy steel material. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Therefore, consideration should be given to the operating characteristics of the search unit and instrument generally available from the equipment manufacturer when evaluating the response curves from the reference blocks.

Additional procedures and controls may be required when fabricating reference blocks from other than carbon or alloy steel material.