Who ever dreamed this could happen in aerospace…

Aerospace applications are included in some of the cutting-edge technological developments that are made possible by advanced ceramics. For example in 2020 NASA is planning a mission to Mars which will include a device in which Advanced ceramics could prove
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The role of crack formation in Chevron-Notched four-point bend specimens

From NASA’s technical reports server on chevron-notched specimens The chevron notched four-point bend specimen provides a convenient method for measuring fracture resistance of very brittle materials which are difficult to precrack. Read the full memorandum http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19950005452.pdf