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.
|Published (Last):||21 August 2015|
|PDF File Size:||9.26 Mb|
|ePub File Size:||15.63 Mb|
|Price:||Free* [*Free Regsitration Required]|
The lateral movement on each raster step shall not exceed half the element dimension in the lateral direction. Link to Active This link will always route to the current Active version of the standard. 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.
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Probe placement will be de? atsm
ASTM E Standard Practice for Contact Ultrasonic Testing of Welds Using Phased Arrays
The method for the system used is best described for each instrument in the operating manual for that instrument. Link to Active This link will always route to the current Active version of the standard. For additional pertinent information, see Practices EEand E A number in parentheses indicates the year of last reapproval. 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.
Volume coverage afforded by multiple stand-off positions of probes are illustrated for encoded linear scans.
ASTM E2700 – 14
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. Generally using more focal laws requires more processing time so update rates of the B-scan or S-scan displays are slower as more focal laws are used. Guide mechanisms such as probe holding frames or magnetic strips are used to ensure that the probe moves at a?
Examination from both sides of the web plate should be used when access permits. This technique is not generally considered to be as effective as the technique described in Fig.
Basis of Application 6. Typical couplants include water, oil, grease, glycerin, and cellulose gum. This practice is based on experience with ferrous and aluminum alloys. The practice is intended to be used on thicknesses of 9 to mm 0. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
Range standardization shall include correction for wedge travel time so that the zero-depth position in the test piece is accurately indicated for each focal law. The couplant used should not be injurious to the material to be examined, should form a thin? Commercial software permits the operator to easily make set ups without detailed knowledge of the phasing requirements.
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. A remote portable PC connected to the instrument may also be used for this purpose. Additionally, there should also be training or knowledge and experience related to phased array equipment and techniques. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
Practice E covers setting up of phased arrays for weld inspections. Current edition approved Aug. When water is used, it should be clean and de-aerated if possible. 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: Greater and lesser thicknesses may be tested using this standard practice if the technique can be demonstrated to provide adequate detection on mockups of the same wall thickness and geometry.
This can be replaced with raster scanning where the stand-offs are continuously varied to the limits required using manual movement of the probes.
NOTE 1—This practice is based on experience with ferrous and aluminum alloys. For double Vee welds, angle beam examinations should be carried out e270 both surfaces when access permits. For thin wall sections, a single probe stand-off may be possible for linear scanning if the probe parameters are adequate for full volume coverage.
For thick wall sections, multiple probe stand-offs or multiple focal law stand-offs will be required for linear scanning to ensure full volume coverage.
ASTM E2700-14 Standard Practice for Contact Ultrasonic Testing of Welds Using Phased Arrays
The couplant should wet the surfaces of the search unit and the test piece, and eliminate any air space between the two. This method can be used only if the instrument adtm provided with electronic distance amplitude compensation circuitry TCG. The applicable edition of Practice E shall be speci?
Note that this interval should be reduced when length sizing of? 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.
When glycerin is used, a small amount of wetting agent is often added, to improve the coupling properties. The practice or standard used and its applicable revision shall be identi?
Only 1D arrays or dual arrays con? The values given in parentheses are for information only. S-scans have the advantage over E-scans that all the speci? Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Practices for specific geometries such as spot welds are not included.