Enhanced Environmental Performance for Safety Glass – Phase IV

NCMS Project #: 141009

Problem: Safety glass is used in many applications where transparency is required and some degree of protection from foreign object strike is needed.  Through the prior phases of this effort, we are investigating both the means to mitigate rock strike damage, the root causes of delamination related to environmental factors during manufacturing, material and manufacturing-related sources of delamination, and alternate constructs that are less prone to delamination.

Benefit: The intended solution for this project is to decrease the lifecycle costs to the Army by improving transparent armor reliability without significantly increasing the weight or cost of the product.  The results of this effort will be applicable to commercial and military market segments.

Solution/Approach: Phase I efforts focused on the rock strike problem and investigated the contribution of lamination process parameters to the delamination problem.  Phase II further addressed the delamination problem by more fully understanding the impact of temperature on failure of a range of laminate interlayer materials.  In Phase III, additional focus was made on understanding delamination and alternate safety glass constructs, including cast-interlayer designs.  In Phase IV, a collaborative effort will be used to develop and test an out-of-autoclave (OOA) safety glass materials and manufacturing process.  The team will focus on addressing delamination through radical innovation, replacing the lamination process with an OOA manufacturing method.  

Impact on Warfighter:

  • Reduce lifecycle and maintenance costs
  • Reduce scrap and maintenance time to replace windshields
  • Improve warfighter readiness

DOD Participation:

  • U.S. Army Combat Capabilities Development Command (CCDEVCOM) Ground Vehicle Systems Center (GVSC)

Industry Participation:

  • PPG Industries, Inc.
  • Tool Design and Manufacturer
  • NCMS

Benefit Area(s):

  • Cost savings
  • Safety
  • Improved readiness
  • Survivability
  • Reliability improvement

Focus Area:

  • Reliability improvement