If you have a specific article you're searching for, Summon is a good place to start. Summon lets you simultaneously search the Library's book collection and many full text journal articles.
If you're searching for articles on a topic, you'll probably want to search a database which is more focused on engineering than Summon. Here are some starting points for finding engineering journal articles or conference proceedings. Look for the UBC eLink icons to check for full text articles.
Can't find an article? Contact your librarian. UBC Library Interlibrary Loan service allows you to request the article from another library (usually quickly and in PDF format).
You may also want to search the following databases, most of which only show results from a single publisher. Please note that not all of the articles you find in these databases will be available full text. If UBC does not have an article, you can request it through Interlibrary Loan at no charge.