[1][2] Brassard worked as a metallographic technician at Allegheny Ludlum Steel Corporation, and at General Electric in Schenectady, New York.

[3] At Watervliet, she was director of the metallography laboratory,[4] and used metallographic analysis to study "white layer", an erosion phenomenon that affected gunmetal.

[7][8] In 1975 she received the Metallurgical Engineering Assistant's Award from the Eastern New York chapter of the American Society of Metals.

[9] She published her research in academic journals including Composites[10] and Metals Engineering Quarterly.

[9] Vandecar married World War II veteran Raymond Earl Brassard.