Dynamic Tear and ?-integral specimens having four levels of porosity were prepared from weldable aluminum alloy welds (5083/5183, 6061/5356, and 5455/5556). All specimens were fatigue pre-cracked before testing. The amount of porosity was measured directly on the fracture surfaces using quantative metallographic methods and was divided into macro- and micro-porosity (pores equal to or larger than and smaller than 0.01-in., respectively). Radiography indicates only the macro-porosity as discrete pores. In general, there were 5 to 10 times more micro-porosity than macro-porosity found on the fracture surfaces. Total porosity was the sum of the macro- and the micro-porosity.
| File Size : | 1
file
, 680 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 20 |
| Published : | 1980 |
