Grey Literature Includes Master and PhD thesis, technical reports, conferences, patents, standards, etc...
AUB Thesis
To access AUB Thesis, use the library catalog Advanced Search and limit to material type e-Thesis, Thesis and Dissertation:
e.g. Solar Energy
You can check the list of Mechanical Engineering Theses Here
Non-AUB Thesis
Use ProQuest Dissertations & Theses Global to find dissertations and theses from over 1,000 accredited colleges and universities in North America and Europe.
Standards
ASTM Standards and Engineering Digital Library
Patents
United States Patent and Trademark Office
Technical Papers and Reports
SAE Digital Library full-text access to industry-leading technical papers, reports, standards, books, and magazines