ASTM A LEVEL B, Ali Asghari, 2/2/15 AM. Dear All. In lamination check by straight probe, some lamination and inclusion detected but they have a. All production processes are Level II automated which ensures ASTM A ( Level A – max mm;. Level B – max 60 mm; Level C – 20 mm). • BS Please make the clarification the Acceptance level between ASTM A Level II and Level B. Because i got the requirement from client that Ultrasonic for steel.
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Maintain this instrument setting during evaluation of the discontinuity condition. Measure the lines from the center or one corner of the plate with an additional path within 2 in.
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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. The material shall be held for metallurgical review by the purchaser and manufacturer.
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The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Thickness, grain size or microstructure of the material and nature of the equipment or method may require a higher or lower test frequency. Current edition approved Sept. A qstm epsilon e indicates an editorial change since the last revision or reapproval.
NOTE 1—Indications occurring midway between the initial pulse and the? The American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in lebel standard.
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By joining you are opting in to receive e-mail. A clean, easily interpreted trace pattern should be produced during the examination.
Mark the plate at a point equivalent to the center of the transducer. Minor sensitivity adjustments may be made to accommodate for surface roughness. Where parallel path scanning is performed and recordable conditions as in 6.
A curve is then plotted showing the deviations from the above established 2: Additionally, prior approval must be obtained if the weld repaired surface exceeds 1. Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
Repeat the operation to establish the boundary. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors. Join your peers on the Internet’s largest technical engineering professional community.
SA, UT Acceptance criteria – Boiler and Pressure Vessel engineering – Eng-Tips
When details of these requirements are not covered herein, they are subject to agreement between the manufacturer and the purchaser.
If the drop in back re? Originally published as A — 67 T. Use the transducers at their rated frequency. Close this window and log in. The holes may be drilled in the plate to be examined if they can be located without interfering with the use of the plate, in a prolongation of the plate to be examined, or in a reference block of the same nominal composition and thermal treatment as the plate to be examined.
Three levels of acceptance standards levvel provided. Supplementary requirements are provided for examination of clad plate and for alternative procedures. An equivalent standard is one which covers the quali?
Use a lwvel couplant such as water, soluble oil, or glycerin. At each increment the ratio of the two signals is determined. Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden. Condition local rough surfaces by grinding. The ratios are plotted on the graph at the position corresponding to the larger signal.
As a result of the test by this method, the surface of plates may be expected to have a residue of oil or rust or both. Acceptance Standards—Level B 8. When this condition is observed it shall be investigated additionally by use of multiple back re? Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phone astk, faxor service astm.
The Eng-Tips staff will check this out and take appropriate action. A number in parentheses indicates the year of last reapproval. Acoustical similarity is presumed when, without a change in instrument setting, comparison of the back re? Red Flag This Post Please let us know here why this post is inappropriate. Acceptance Standard—Level A 7. The surface of the reference block shall be no better to the unaided eye than the plate surface to be examined.
Acceptance Level B shall apply unless otherwise agreed to by purchaser and manufacturer.