Reliability is a broad topic with applications in a number of different subject areas - not only in general mathematics or statistics but also in engineering, actuarial science, biostatistics, economics, operations management, and more - whether talking about planes, bodies, or recessions, the mathematical models often remain the same. Therefore, the literature on reliability will be found in databases across a number of different subject areas. General, interdisciplinary resources will be great starting points, and then move to more subject-specific resources; think about who is interested in your topic and where they might publish.
You may notice that the database doesn't always provide you with a PDF of the article -- sometimes it will just give you an abstract. In that situation look for the "Find it @ W&M' button, which will take you back through our library website to get you access to the article. If it's something that we don't have, you can request it by interlibrary loan. They'll send a PDF of the article straight to your inbox, typically within a few days!