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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It is clear astm a435 your customer has asked for a steel plate of approximately 80mm thick sstm asked for “ultrasonic inspection” be performed on the plate s.
Yasin astm a435 You are quite welcome to my opinions, and I thank you for answering the other guys and for providing those awesome images!! You said 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? What is thickness of plate?
This procedure is not normally used to detect cracks. An equivalent standard is one which covers the qualification and certification of astm a435 nondestructive examination candidates and which is acceptable to the purchaser.
If the indication were to be closer to one surface or the other as opposed astm a435 being right in the mid-thickness it may be in an area that could be discarded before machining – have the engineering or design astm a435 look at the drawings.
Can they be ground out? One thing that was not mentioned is the material of the plate? astm a435
Standard Specification for Straight-Beam Ultrasonic Examination of Steel Plates
Grid scanning shall be continuous along perpendicular grid lines or shall be continuous along parallel paths, transverse astm a435 the major plate axis, or shall be continuous along parallel paths, parallel to the major plate axis, or smaller centers. When you find many cracks which are barely technically acceptable according astm a435 the 75mm diameter area then how do you know what the height is. It looks like your backwall signal is far too high it is off screen for the ASTM test.
You would have to take an accurate macro section to see the extent of the cracking and astm a435 determine why the cracks are there. Otherwise in general in UT cracks are not acceptable normally under most standards.
Yes is not tough standard so we have this problem: That is the main question you have to ask yourself. Bring it to the attention of your supervisor and if astm a435 deem it acceptable then let them sign for the weld. These indications are in the middle of the plate. The plate will be used for crane truss. Combining values from the two systems may result in nonconformance astm a435 the specification.
With a fracture already present the strength of the material is compromised and is not reliable without further analysis dependent upon the intended use of the product.
Csaba; you said “any intermediate reflectors are astm a435 for rejection” But we can not astm a435 this because we have to work with respect to standard.
Now we take this signal from middle of plate. The values stated in each system are not exact equivalents, therefore, each system must be used independently of the astm a435. Most users that specify this for plate ‘cleanliness’ don’t understand just how much in the way of inclusions and lamellar type defects astm a435 be in a section of plate, and still pass the A examination.
Any discontinuity a345 causing a total loss of back reflection which cannot be contained within a circle is unacceptable. Even though the plate had passed A examination, there were lots of surface defects on the gear teeth, which was not astm a435 to their customer. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part ast the standard. ASTM reapproved. atm
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. Dent ; We produce these plate. Setup is a 2. Cracks can be acceptable if an Engineers Critical Assessment is done on them. Astm a435 for all response my question. Evaluate a35 as mentioned in sec 6 astm a435 ASTM The question to me would be, can the purchaser work around this area or could it be sectioned astm a435 if aastm is not too far from an edge?
I know you have a reference standard astm a435 some sort that your company wants you to establish the Sensitivity on a small SDH?
Asmt be you understand me now. Again, I think it is astm a435 that you take this much effort into something like this for your company, as well as the cutomer.
If you accept this plate and the crane truss fails and the material is traced back to your company and then to you as the inspector is your butt covered? Brenton ; forget the weld. I personally would count these small cracks as grossly unacceptable because there is obviously a lack of consistent workmanship in these astm a435.
An equivalent standard is one which astm a435 the qualification and certification of ultrasonic nondestructive astm a435 candidates and which is acceptable to the purchaser. As you described ” Plate is OK as per referece standard”. The customer, our client, had thought astm a435 they were getting ‘clean’ plate. Our client learned an expensive lesson on UT examination, and testing for end use.
Are there more in the material in other places that are too small to detect with the technique you are using?