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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Unlike this practice, Practice E has requirements for evaluation relative to a specified standard target. Checking Ultrasonic Response Characteristics 8.

At frequencies such as 5. Note 2—Practice E and Guide E also describe procedures for selecting material, fabricating blocks, and checking response.

ASTM E – 00_百度文库

For example, the identi? Generally, nickel plating to a maximum thickness of 0. This practice, however, must not be confused with, nor does it supersede Practice Especi? Asrm values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

The reference blocks described are suitable for use with either the direct-contact method or immersion pulse-echo ultrasonic methods.

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.

Unlike this practice, Practice E has requirements for evaluation relative to a specified standard target. The following machining sequence is recommended: This practice shall in no way preclude the specification or asstm of any supplemented requirements as deemed necessary for the specific application. This is particularly desirable in the cases of sets containing?

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Link to Active This link will always route to the current Active version of the standard. Checking Physical Characteristics 7.

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

Originally published as E — On samples that are to have FBHs smaller than 3? 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.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

ASTM E428 – 08(2013)

A superscript epsilon e indicates an editorial change since the last revision or reapproval. Careful attention must be given to the squareness of corners of the cutter, the slightest radius reduces the re?

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. Due to possible edge build-up during the plating process, this tolerance applies only to the area exclusive of that within 1? G—Hole bottom must be? Under no circumstances may the FBH be altered to change the ultrasonicresponse characteristics of the reference block. The reference blocks described are suitable for use with either the direct-contact method or immersion pulse-echo ultrasonic methods.

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Current edition approved July 10, 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.

It is recommended that blocks fabricated as sets be compared with each other to determine their relative ultrasonic-response characteristics. In cases of materials that are acoustically transparent to the extent that this requirement cannot be satis?

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Also see Reference 2 for cautions regarding use of standard blocks for test standardizations. The grain size, heat treat condition, physical and chemical composition, surface?

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 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 practice shall in no way preclude the specification or addition of any supplemented requirements as deemed necessary for the specific application.