Designation: A/AM – 90 (Reapproved ) Standard Specification for. 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。. Standard Specification for Straight-Beam Ultrasonic Examination of Steel Plates – ASTM A/AM1.
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As the NDT technician that found the cracks I would only sign astm a435 report that stated “non relevant intermittent astm a435 cracking indications found and acceptable astm a435 per ASTM as instructed by management” or something astm a435.
The equipment shall be of the pulse-echo straight beam type. Document your query by email because you never know when cases can come back to haunt you. Are there more in the material in other places that are too small to detect with the technique you are using? Bottom line is that ASTM is a workmanship based criteria and when dealing with cracks you need to use an ECA based on fracture mechanics.
The question to me would be, can the purchaser work around this area or could it be sectioned out if it is not too far from an edge? Yasin Fullfil all astm a435 requirements of Reference standard. Again, I think it is great that you take this much effort into something like this for your company, as well as the cutomer.
Material is normal carbon steel and very low alloy element Niobyum and Titanium. Your photo did not show astm a435 the post.
It is clear that your customer has asked for a steel plate of approximately 80mm thick and asked for astm a435 inspection” be performed on the plate s. Many times customers really don’t know what ASTM they ‘need’ to call out astm a435 really understand the in-depth NDT side of things — that’s where buying from a company that has excellent inspectors like you might save them big trouble down the road!
Now astm a435 take this signal from middle of plate. The values stated in each system are astm a435 exact equivalents, therefore, each system must be used independently of the other. That is the main question you have to ask yourself. Even though the plate had passed A examination, there were lots of surface defects on the gear teeth, which was not acceptable to their customer. What size and frequency probe are you using?
You say these ast are only mm astm a435. Any discontinuity indication causing a astm a435 loss of back reflection which cannot be contained within a circle is unacceptable. 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.
I a345 applaud you for persuing astm a435 crack and sharing it with us here on the Forums Its future usefulness has to be decided by designer or client not by UT man. ASTM reapproved.
Standard Specification for Straight-Beam Ultrasonic Examination of Steel Plates
The values stated in each system are not exact equivalents, therefore, each system must be used independently of the other. 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. I again agree with Dent: S435 examination shall be made on either major surface of the plate. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but astm a435 not provided as part of the standard.
If you accept this wstm and the crane truss fails and the material is traced back to your company asm then to you as the inspector is your butt covered? There is small astm a435 crack in material. It was developed to assure delivery of zstm plates free of gross internal discontinuities such as pipe, ruptures, or laminations and is to astm a435 used whenever the inquiry, contract, order, or specification states that the plates are to be subjected to ultrasonic examination. Cracks can be acceptable if an Engineers Critical Assessment is done on them.
Hope that helps you It was developed to assure delivery of steel plates astm a435 of gross internal discontinuities such as pipe, ruptures, or laminations and is to be used whenever the inquiry, contract, order, aa435 specification states that the plates are to be subjected to ultrasonic examination.
I believe requires grid scanning only and is not a very tough test to pass. Setup is a 2. The plate will be used for crane truss.
I personally would not accept the welds unless I had it in writing that the small cracks astm a435 saw under macro section were astm a435. Do you have total loss of back reflection?
Yes is not tough standard so we have this problem: How deep are the cracks? This specification covers the standard procedure and acceptance for straight-beam, pulse-echo, ultrasonic examination of astm a435 fully killed carbon and alloy steel plates.
I want to reject this material but it must be astm a435 on standard. Ashm hard to just guess, but I read ASTM-A to be a Specification used to evaluate steel plates such that they can be delivered to a machining phase with good confidence that there are atm 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. I would print a copy astm a435 that to include in the final report packge that would be delivered to the customer.
May astm a435 you understand me now. Needless to say, there was a lot of a43 with the supplier, who had the plate tested, and sold it as such.
I personally would astm a435 these small cracks as grossly unacceptable because there is obviously a lack of consistent workmanship in these welds. What is plate to be used asym The customer, our client, had thought that they were getting ‘clean’ plate. What is thickness of plate?
Otherwise in general astm a435 UT cracks are not acceptable normally under most standards.
You would have to take an accurate macro section to see the extent of the cracking and then determine why the cracks are there. You astm a435 the plate is not going to be machined either – I suppose this plate that goes to the crane would not be a load-bearing plate and might attach with rivots or something?
Can astm a435 be ground out?
Yasin – I cannot view your photo either