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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Under no circumstances may the FBH be altered to change the ultrasonicresponse characteristics of the reference block. Active view current version of standard Translated Standard: Due to possible edge build-up during the plating process, this tolerance applies only to the area exclusive of that within 1?

ASTM E428 – 08(2013)

Unlike this practice, Practice E has requirements for evaluation relative to a specified standard target. 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.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. An adequate d428 gap astmm be maintained at the hole bottom.

ASTM E – 00_百度文库

The following machining sequence is recommended: Without changing any test parameters, the ultrasonic response from the remaining blocks with both shorter and longer distances are plotted on the response curve.

Comparison test at other frequencies or with uncalibrated instruments will not necessarily give the same relationships shown in this practice. Where several sets and types of blocks are being used, a serial number identi? 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.

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

For record purposes, the replica may be projected on a comparator screen and photographed as shown in Fig. This practice, however, must not be confused with, nor does it supersede Practice Especi? The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. At frequencies such as 5.

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 e42 Subcommittee E The grain size, asgm treat condition, physical and chemical composition, surface? D—Hole diameter tolerance NOTE 2—This practice may be used to produce blocks with?

Checking Physical Characteristics 7. Generally, nickel plating to a maximum thickness of 0. Therefore, consideration should be given to the e48 characteristics of the search unit and instrument generally available from the equipment manufacturer when evaluating the response curves from the reference blocks.

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

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. For example, the identi?

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

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R428 procedures and controls may be required when fabricating reference blocks from other than carbon or alloy steel material. It is recommended that blocks fabricated as sets be compared with each other to determine their relative ultrasonic-response characteristics.

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 adtm production material.

Last previous edition E — The reference blocks described are suitable for use with either the direct-contact method or immersion pulse-echo ultrasonic methods. See Reference 1 for area-amplitude limitations at other frequencies and transducer diameters. This practice shall in no way preclude the speci? Checking Ultrasonic Response Characteristics 8.

G—Hole bottom must be? Originally published as E — Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. With the amplitude from the?

The machined counterbore may be omitted if this plugging technique is used. Link to Active This link will always route to the current Active version astn the standard. Block sets conforming to customary commercial practice are grouped as follows: The replica shall indicate that the hole bottom is?

Also see Reference 2 for cautions regarding use of standard blocks for test standardizations. It must be recognized however that there are limitations on the size hole that may be replicated and evaluated.