Effects of Surface Treatment and Interfacial Strength on the Damage Propagation in Layered Transparent Armor under Impact
Abstract
This research program is to develop a fundamental understanding of the damage propagation through layered transparent armors under impact loading conditions. The effects of surface quality and interfacial bonding strength on the damage propagation or arrest will also be examined. During the funded period of the program, a gas gun has been developed and used to impact layered glass targets. Notched glass specimens having adhesive interfaces are impacted with plastic projectiles. It is found that, an impact-induced crack arrests at an interface perpendocular to the crack path if the interface is not bonded. When the interface is bonded tightly, the crack passes through the interface in its propagation without being affected by the interface. When the bonded interface has a finite thickness, the crack slows down at the interface and then branches to many cracks that form a fan shape. Besides the crack experiments, the effects of surface quality on bending strength of glass are also investigated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 20, 2011
- Accession Number
- ADA546249
Entities
People
- Weinong W. Chen
Organizations
- Purdue University