Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"helium bubbles"”.
-
Multi-scale investigations of the Resistance to helium embrittlement with Direct Energy Deposited Inconel 718
To address the high levels of helium production in advanced fission and fusion reactors, in an economical manner, Direct Energy Deposition (DED) was utilized with the existing alloy, Inconel 718. Based on previous works with DED and laser welding, it was hypothesized that nano-sized pores could be …
-
Design and Testing of a Bubble Generator for Molten Salt Surrogate Fluid
… Morton number defined by the properties of the helium bubbles in the pump bowl of the Molten Salt Reactor Experiment (MSRE). The injector, constructed from polydimethylsiloxane (PDMS) and acrylic, was tested to generate bubbles within a precise size range suitable for simulating conditions in …
-
KMC modeling of helium bubble clustering and evolution in BCC iron
The effect of helium in iron is an important issue in nuclear systems, as iron and iron alloys (steels) are the primary materials used for structural elements. Helium is known to cause embrittlement and decrease fatigue life, as well as aid creep and promote swelling. These effects can …
-
Design and Development of Damage-Tolerant Active Materials
… neutron radiation, which produces transmutation helium (He) that embrittles grain boundaries. The strategy pro-posed is to incorporate nano-phases that can absorb and store helium in their bulk lattice, forming a “helide” compound. To identify potential helide formers, this thesis first defines …
-
Analysis of Sans Transmission Data from Highly Absorbing Samples with Thickness Non-Uniformity and Pinhole Defects
Made available in DSpace on 2017-07-06T18:42:23Z (GMT). No. of bitstreams: 3 Barber_Nathan_R_MS.pdf: 32484155 bytes, checksum: c0e4681232f1c1f64f9d779adf81a73e (MD5) Barber_Nathan_R_MS_ABS.pdf: 611841 bytes, checksum: 2a58b6037413e2eb8a47b78e4ea8431b (MD5) license.txt: 4813 bytes, checksum: …