Arizona State University's Ira A. Fulton Schools of Engineering offers an online PhD in mechanical engineering, accredited by the Higher Learning Commission.
U.S. News & World Report provides a list of accredited online mechanical engineering PhD programs in the USA, including University of Michigan and University of California, Berkeley.
Stanford University's School of Engineering offers a PhD in mechanical engineering with online and on-campus options, accredited by the Western Association of Schools and Colleges.
This research paper reviews online PhD programs in mechanical engineering, including those offered by universities in the USA, and discusses accreditation and quality assurance.
The Accreditation Board for Engineering and Technology (ABET) provides a list of accredited online mechanical engineering PhD programs in the USA, including those offered by universities and colleges.
Coursera offers online courses and degree programs in mechanical engineering from top universities, including University of Pennsylvania and University of California, Irvine.
edX provides an overview of online PhD programs in mechanical engineering, including pros and cons, and discusses accreditation and career outcomes.
NASA provides a guide to accredited online PhD programs in mechanical engineering, including those offered by universities in the USA, and discusses career opportunities in the field.