Open Access. Powered by Scholars. Published by Universities.®

Nuclear Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

Review of Progress in Quantitative Nondestructive Evaluation

1989

Articles 1 - 3 of 3

Full-Text Articles in Nuclear Engineering

Application Of Ct Filter Algorithms To Digitized Film Data, James A. Morman Jan 1989

Application Of Ct Filter Algorithms To Digitized Film Data, James A. Morman

Review of Progress in Quantitative Nondestructive Evaluation

The CT studies performed thus far in the RAS division have been based on neutron radiographs of two 7-pin reactor fuel bundles which were subjected to over-power accident simulations in the TREAT reactor. The tests as referenced below were named LO5 and LO6. As a result of the tests, the pins were severely damaged, with molten fuel and steel spreading throughout the fuel assembly. After removal of parts of the test vehicle, the remaining assembly is approximately 2-m long, and about 10-cm diameter.


Improving Ultrasonic Inspection Of Austenitic Steels: A Combined Theoretical And Experimental Approach, J. A. Ogilvy, A. H. Harker, J. P. Charlesworth, B. M. Hawker, M. W. Stringfellow Jan 1989

Improving Ultrasonic Inspection Of Austenitic Steels: A Combined Theoretical And Experimental Approach, J. A. Ogilvy, A. H. Harker, J. P. Charlesworth, B. M. Hawker, M. W. Stringfellow

Review of Progress in Quantitative Nondestructive Evaluation

The ultrasonic inspection of austenitic castings and welds is often complicated by their material structures. These steels are characterized by large grains, sometimes comparable in size with typical ultrasonic wavelengths. Such coarse macrostructure can lead to high ultrasonic attenuation, significant grain noise and to anisotropic properties [1]. Furthermore, austenitic welds may solidify as large columnar grains, with orientations which are slowly varying throughout the weld. These materials are then inhomogeneous as well as anisotropic.


Ultrasonic Examination Of Cast Stainless Steel Component In Nuclear Power Plant, Peter Jeong, Frank Ammirato Jan 1989

Ultrasonic Examination Of Cast Stainless Steel Component In Nuclear Power Plant, Peter Jeong, Frank Ammirato

Review of Progress in Quantitative Nondestructive Evaluation

CSS, used extensively for nuclear power plant components, has complex grain structures that compromise the accuracy of ultrasonic examination. Figure 1 shows a pipe-to-elbow joint that is typically used in many pressurized water reactors (PWRs). The joint has a columnar-dendritic grain structure at one end and an equiaxed grain structure at the other. Ultrasonic wave propagation is significantly different in these two structures.