The reason I am asking about phased array is I would like to expand the capabilities of inspection at our company to include phased array. We do inspection of structural steel in the Seattle area and I would like to see what the intrest would be for PA in the steel industry. I would also like to...
I would like to know if there is anyone who is familiar with phased array ultrasonic testing. I would like to know if there is an interest in using this test method and what industry it will be most applicable.
I am currently involved with a project where welding was performed over the zinc coating. The contractor attempted a belated procedure qualification. Each attempt failed. The pull tests failed at 50% to 70% of yield in the weld. The failures generated from cracks in the root caused by zinc.
A...
I am trying to find an etchant that will reveal zinc or galvanized material in a weld. The condition is for when welding over galvanized steel the zinc effects the weld. I would like to use an etchant that will show the zinc or any problems that arise from welding over galvanized steel.
Once again the manufacturers specifications for the specific filler metal will be your best resource. I highly recommend a visit to Linclon electrics website. Brouse around the filler metal specifications and see how the parameters are detailed. This is the bread and butter of WPS parameters...
The inspector should have known that the arbitration method described in the ASTM for A325 and A490 bolts. This basically involves determining a torque from 5 bolts brougnt to full tension in the skidmore. This is a simple procedure, and is described in detail in the ASTM. This can be found on...
The best place to compare filler metal properties is the manufacturers specification for the material. Lincoln electric has a website that posts all of their material specicications. The short route is to contact a local supplier, or representative. They will give you exactly what you are loking...
As an welding inspector the welder qualification process serves to weed out the imposters. Even qualified welders can produce some questionable welds at the least, and total trash at the worst. I wish I could post some pictures of the bad welding I have encountered in my travels.
The ASD manual pg. 5-272 details the requirements for washer application. Typically an A325 -A490 bolt when fully tensioned will destroy a lock washer. The washers are not needed in a fully tensioned connection. When bolts are place in a connection that is required to slip the threads are...
