ASTM E428 PDF

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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This practice shall in no way preclude the speci?

The reference blocks described are suitable for use with either the direct-contact method or immersion pulse-echo ultrasonic methods. It is recommended that blocks fabricated as sets be compared with each other to determine their relative ultrasonic-response characteristics. Link to Active This link will always route to the current Active version of the standard.

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. Originally published as E — For example, the identi? At frequencies such as 5.

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. The following machining sequence is recommended: This practice shall in no way preclude the specification or addition of any supplemented requirements as deemed necessary for the specific application.

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. Generally, nickel plating to a maximum thickness of 0.

ASTM E – 00_百度文库

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

Without changing any test parameters, the ultrasonic response from the remaining blocks with both shorter and longer distances are plotted on the response curve. Active view current version of standard. The machined counterbore may be omitted if this plugging technique is used.

Checking Physical Characteristics 7. For record purposes, the replica may be projected on a comparator screen and photographed as shown in Fig.

Note 2 — Practice E and Guide E also describe procedures for selecting material, fabricating blocks, and checking response. Unlike this practice, Practice E has requirements for evaluation relative to a specified standard target.

Without changing any examination parameters, the ultrasonic response from the remaining blocks with both smaller and larger size re? D—Hole diameter tolerance Due to possible edge build-up during the plating process, this tolerance applies only to the area exclusive of that within 1?

The replica shall indicate that the hole bottom asrm 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 axtm method is used. Checking Ultrasonic Response Characteristics 8. The physical characteristics of the hole may be established by evaluating plastic replicas. Active view current version of standard Translated Standard: Comparison test at other frequencies or with uncalibrated instruments will qstm necessarily give the same relationships shown in this practice.

With the amplitude from the? Note 1 — Use of flat-surface reference blocks astmm not be suitable for cylindrical materials 3 2.

ASTM E428 – 08(2013)

Historical Version s – view previous versions of standard. 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.

G—Hole bottom must be? The acoustic noise level 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. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Unlike this practice, Practice E has requirements for evaluation relative to a specified standard target.

In w428 of materials that are acoustically transparent to the extent that this requirement cannot be satis? Additional procedures and controls may be required when fabricating reference blocks from other than carbon or alloy steel material. This practice, however, must not be confused with, nor does it supersede Practice Especi?

The curve may vary when the test is performed at other frequencies with different diameter search units and different water-path distances or if a contact test method is used. If you feel that your comments have not received a fair hearing you should make your views astj to the ASTM Committee on Standards, at the address shown below.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. On samples that are to have FBHs smaller than 3? This practice shall in no way preclude the specification or addition of any supplemented requirements as deemed necessary for the specific application. Where several sets and types of blocks are being used, a serial number identi? 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.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. NOTE 2—This practice may be used to produce blocks with?