ASTM A pdf – Download as PDF File .pdf), Text File .txt) or read online. 3 Oct ASTM AM Standard Specification for Straight-Beam Ultrasonic Examination of Steel Plates_建筑/土木_工程科技_专业资料。. ASTM-A, ASTM-A, BS-EN and others). Reports. A test report documenting inspection and analysis results can be automatically produced at the.
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You would have to take an accurate macro section to see the extent of the cracking and then determine why the cracks are there. It was developed to assure delivery of steel plates free of gross internal discontinuities such as pipe, ruptures, or laminations and is to be used whenever the inquiry, contract, order, or specification states that the plates are to be subjected to ultrasonic examination.
What size and frequency probe are you using? There is a photo of these cracks in atttachment and these crack length is about mm long but there is lots of where in plate. Brenton ; forget the weld. One thing that was not mentioned is the material of the plate?
However if these plates are not subject to high stress or fatigue conditions they could very well be acceptable. I personally would count these small cracks as grossly unacceptable because there is obviously a lack of consistent workmanship in these welds. Thickness of plate are 40 mm50 mm and rarely 80 mm.
Link to Active This link will always route to the current Active version of the standard. Needless to say, q435 was a lot of arguments with the asfm, who had the plate tested, and sold it as such. What is plate to be used for? ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
What is thickness of plate? Ultrasonic examination shall be made on either major surface of the plate.
Standard Specification for Straight-Beam Ultrasonic Examination of Steel Plates
As you described ” Plate is OK as per referece standard”. The values stated in each system are not exact equivalents, therefore, each system must be used independently of the other. If you s435 manufacturing the plates and you are getting these small cracks all the time then you need to change your welding process.
This procedure is not normally used to detect cracks. It’s hard to just guess, asrm I read ASTM-A to be a Specification used to evaluate steel plates such aastm they can be delivered to a machining phase with good confidence that there are no GROSS internal defects not the same as discontinuity free and that if any indications are noted, they are not larger in AREA than a 3.
Yasin Fullfil all the requirements of Reference standard.
Materials fail when a fracture grows until it passes its yield point. At the proper sensitivity you may not asfm see them. Nondestructive examination of the material shall be conducted in an area free of operations that interfere with proper functioning of the equipment. Yasin – I cannot view your photo either Technically the product is acceptable to the ASTM standard.
Within the text, the SI units are shown in brackets. When you find many cracks which are barely technically acceptable according to the 75mm diameter area then how do you know what the height is. Active view a35 version of standard. You say that you get a asrm from the middle of the plate thickness This standard is often employed for plate asttm may be specified for various different uses.
Review the drawings with them and determine if this is located in an area closer to one edge or the other where it may be sectioned away before delivery or something.
May be you understand me now. Combining values from the two systems may result in nonconformance with the specification.
Active view current version of standard Translated Standard: No customer wants products that have cracks in them and no manufacturer wants to redo material that is acceptable to the standard they are working to. Hope that helps you An equivalent standard is one which covers the qualification and certification of ultrasonic nondestructive examination candidates and which is acceptable to the purchaser. How deep are the cracks? Do you have total loss of back reflection?
What type of material is this Yasin? When we take signal we cut the plate and adtm with microscope. As the NDT technician that found the cracks I would only sign a report that stated “non relevant intermittent stepwise cracking indications found and acceptable as per ASTM as instructed by management” or something similar.