Abstract
The strength resistance of brittle materials to penetration was studied experimentally in a wide range of penetration velocities from 10 - 5 to 10 4 m/s. The penetration into brittle materials is characterized by a progressive decrease in the strength resistance due to growing fracture ahead of a penetrator. The averaged strength resistance is about 0.2 - 0.5 hardness of the target material. The brittle behavior was observed within a definite velocity range dependent on the failure propagation rate inherent in the target. Beyond this velocity range, a transition to the plastic behavior of brittle materials occurs. This penetration mode is realized when an effect of the growing fracture is eliminated, and strength resistance of an intact material is determined by its fundamental properties rather than by the fracture kinetics. Then the strength resistance is close to the material hardness. Of special importance is the penetration with velocities exceeding the failure propagation rate. Taking into account the found transition, a criterion for hypervelocity impact for brittle targets was suggested.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
