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 specification or addition of any supplemented requirements as deemed necessary for the specific application.

ASTM E – 00_百度文库

Without changing any test parameters, the ultrasonic response from the remaining blocks with both shorter and longer distances are plotted on the response curve. D—Hole diameter tolerance The replica shall indicate that the hole bottom is?

The grain size, heat treat condition, physical and chemical composition, surface? Comparison test at other frequencies or with uncalibrated instruments will not necessarily give the same relationships shown in this practice.

Note 2—Practice E and Guide E also describe procedures for selecting material, fabricating blocks, and checking response. 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.

Additional procedures and controls may be required when fabricating reference blocks from other than carbon or alloy steel material. Checking Ultrasonic Response Characteristics 8. It must be recognized however that there are limitations on the size hole that may be replicated and evaluated. 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.

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Summary of Practice 4. Unlike this practice, Practice E has requirements for evaluation relative to a specified standard target. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Last previous edition E — Additional procedures and controls may be required when fabricating reference blocks from other than carbon or alloy steel material.

Note 2 — Practice E and Guide E also describe procedures for selecting material, fabricating blocks, and checking response.

Note 1 — Use of flat-surface reference blocks may not be suitable for cylindrical materials 3 2. NOTE 2—This practice may be used to produce blocks with? aatm

ASTM E428 – 08(2013)

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Link to Active This link will always route to the current Active version of the standard.

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 This is particularly desirable in the cases of sets containing?

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. For example, the identi? The machined counterbore may be omitted if this plugging technique is used. Where several sets and types of blocks are being used, a serial number identi?

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Generally, nickel plating to a maximum thickness of 0. For record purposes, the replica may be projected on a comparator screen and photographed as shown in Fig. This practice shall in no way preclude the specification or addition of any supplemented requirements as deemed necessary for the specific application.

An adequate air gap must be maintained at the hole bottom.

Checking Physical Characteristics 7. The reference blocks described are suitable for use with either the direct-contact method or immersion pulse-echo ultrasonic methods. In cases zstm materials that are acoustically transparent to the extent that this requirement cannot be satis?

Originally published as E — 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. 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 astn below.

Historical Version s – view previous aztm of f428. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. However, the coating must not signi? Additional procedures and controls may be required when fabricating reference blocks from other than carbon or alloy steel material.