Generation and validation of failure assessment diagram for notched strength prediction of solid propellant tensile specimens

Failure assessment diagrams are generated utilising the well known inherent flaw model and stress fracture models for accurate prediction of notched tensile strength of different cracked configurations of a solid propellant material. The notched strength estimates from the fracture models are found to be close to the test results. This study indicates that any one of the above fracture models may be used for the generation of a failure assessment diagram used to predict the notched strength of cracked configurations made of solid propellant materials.