ASTM E – “Standard Practice for Contact. Ultrasonic Testing of Welds Using Phased Arrays”. ○. ASME Code Case – “Use of Ultrasonic. ASTM E + REDLINE: STANDARD PRACTICE FOR CONTACT ULTRASONIC TESTING OF WELDS USING PHASED ARRAYS – INCLUDES STANDARD +. ASTM E相控阵操作 – 5/13/ Michael Moles PROPOSED CHANGES TO: APPENDIX IV – PHASED.
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Examination from both sides of the web plate should be used when access permits. Scanning e200 speed at which the probe is manually moved forward and backward will be limited by the system update capabilities.
The lateral movement on each raster step shall not exceed half the element dimension in the lateral direction. This feature will be used only for assessment 7 of data quality as the scan is progressing and may allow for one or more channels to be monitored. Other metallic materials can be examined using this practice provided reference standards can be developed that demonstrate that the particular material and weld can be successfully penetrated by an ultrasonic beam.
Descriptive sketches are usually recommended. This practice is based on experience with ferrous and aluminum alloys. Phased array probes may be used with a removable or integral wedge, delay-line, or in an immersion or localized bubbler system mode.
ASTM E – 09 Standard Practice for Contact Ultrasonic Testing of Welds Using Phased Arrays
Examination procedures recommended for common weld con? Surface notches may be used under some circumstances but are not generally recommended.
For special applications, frequencies up to 20 MHz can be used, atm may require special instrumentation with appropriate digitization, and special approval. If instruments do not inherently store A-scan data, such as some manual instruments, the?
For thick wall sections, e700 probe stand-offs or multiple focal law stand-offs will be required for linear scanning to ensure full asfm coverage. For double Vee welds, angle beam examinations should be carried out from both surfaces when access permits. Apply the correction to all focal laws used for the examination. In most cases, the surface from which the straight beam is used needs no further examination using angle beams. Use is made of all re? The values given in parentheses are for information only.
Alternative welding techniques, such as solid state bonding for example, friction stir welding and fusion welding for example, electron beam welding can be inspected using this practice provided adequate coverage and techniques are documented and approved. Current edition approved Aug. Training programs for phased arrays have been set asstm worldwide.
Satm their distinct features and capabilities, phased arrays require special set-ups and standardization, as addressed by this practice. More than one stand-off position may be required for thicker sections. If w2700 equipment has changed by more than the agreed upon tolerances, it shall be re-standardized. Alternative welding techniques, such as solid state bonding for example, friction stir welding and fusion welding for example, electron beam welding can be inspected using this practice provided adequate coverage and techniques are documented and approved.
This may include the following information: This can be replaced with raster scanning where the stand-offs are continuously varied to the limits required using manual movement of the probes.
Since acceptance criteria are not speci? In manual scanning, the dominant display will be an S-scan with associated A-scans. S-scans have the advantage over E-scans e700 all the speci? Guide mechanisms such as probe holding frames or magnetic strips are asttm to ensure that the probe moves at a?
Data, in the form of A-scans from each focal law used, shall be collected at increments of not greater than 2 mm with at least three increments for the length of the smallest required detectable defect, that is, a defect length of 3 mm would require increments of not greater than 1 mm along the scan axis.
If this is the case, drill another hole at 1? The practice or standard used and its applicable revision shall be identi?
This method can be used only if the instrument is provided with electronic distance amplitude compensation circuitry TCG. Greater and lesser thicknesses may astk tested using this standard practice if the technique can be demonstrated to provide adequate detection on mockups of the same wall thickness and geometry 1. For thin sections, it may be possible to use a single stand-off position with either E-scans or S-scans.
Greater and lesser thicknesses may be tested asmt this standard practice if the technique can be demonstrated to provide adequate detection on mockups of the same wall thickness and geometry 1.
The values given in parentheses are for information only. Codes and code cases have been developed, or are being developed, to cover phased array weld inspection requirements by organizations such w2700 ASME.
The technique used will depend on whether or not the weld reinforcement has been ground?
ASTM E2700 – 14
Where scanning is to be performed along the top or across this weld, the weld reinforcement may be ground to provide a? Typical couplants include water, oil, grease, glycerin, and cellulose gum.
Sample illustrations are shown in Figs. Atm some scan patterns emulate manual technology, other scans for example, S-scans are unique to phased arrays.