ASTM E428 PDF

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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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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.

F428 several sets and types of blocks are being used, a serial number identi? The replica shall indicate that the hole bottom is? The acoustic noise level from the material is not to xstm confused with inherent electrical instrument noise often observed when the system sensitivity is adjusted to its maximum level range.

Serial numbers are important when comparing sets of blocks to their respective response curves and to other sets of blocks. The reference blocks described are suitable for use with either the direct-contact method or immersion pulse-echo s428 methods. Unlike this practice, Practice E has requirements for evaluation relative to a speci?

Due to possible edge build-up during the plating process, this tolerance applies only to the area exclusive of that within 1? D—Hole diameter tolerance This practice shall in no way preclude the specification or addition of any supplemented requirements as deemed necessary for the specific application.

Additional procedures and controls may be required when fabricating reference blocks aztm other than carbon or alloy steel material. Historical Version s – view previous versions of standard. Additional procedures and controls may be required when fabricating reference blocks from other than carbon or alloy steel material.

This practice shall in no way preclude the speci? Additional supplemental requirements may be needed when using this practice to fabricate reference blocks from other types of materials or with larger diameter holes.

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The curve may vary when the test is performed at d428 frequencies with different diameter search units and different water-path distances or if a contact test method is used.

Careful attention must be given to the squareness of corners of the cutter, the slightest radius reduces the re? Note 1 — Use of flat-surface reference blocks may not be suitable for cylindrical materials 3 2.

The physical characteristics of the hole may be established by evaluating ast, replicas.

Wstm must be recognized however that there are limitations on the size hole that may be replicated and evaluated. Without changing any examination parameters, the ultrasonic response from the remaining blocks with both smaller and larger size re?

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

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. G—Hole bottom aastm be?

Checking Physical Characteristics 7. On samples that are to have FBHs smaller than 3?

ASTM E – 00_百度文库

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. This practice shall in no way preclude the specification or addition of any supplemented requirements as deemed necessary for the specific application. However, the coating must not signi? The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered wstm.

ASTM E428 – 08(2013)

The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. Active view current version of standard.

See Reference 1 for area-amplitude limitations at other frequencies and transducer diameters. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.

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Originally published as E — It is recommended that blocks fabricated as sets be compared with each other asgm determine their relative ultrasonic-response characteristics. The machined counterbore may be omitted if this plugging technique is used. 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.

A superscript epsilon e indicates an editorial change since the last revision or reapproval.

An adequate air gap must be maintained at the hole bottom. For record purposes, the replica may be projected on a comparator screen and photographed as shown in Fig. With the amplitude from the? For asmt, the identi? Note 2 — Practice E and Guide E also describe procedures for selecting material, fabricating blocks, and checking response. Under no circumstances may the FBH be altered to change the ultrasonicresponse characteristics of the reference block. The examination instruments, frequency, and search unit used in the evaluation of the raw material intended for the fabrication of the reference blocks shall be comparable to that used in the examination of the production material.

Active view current version of standard Translated Standard: Note 2—Practice E and Guide E also describe procedures for selecting material, fabricating blocks, and zstm response. Generally, nickel plating to a maximum thickness of 0. Block sets conforming to customary commercial practice are grouped as follows: Your comments will receive careful consideration asttm a meeting of the responsible technical committee, which you may attend.

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

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Also see Reference 2 for cautions regarding use of standard blocks for test standardizations.