The researchers examined how different materials between glass layers affect how glass responds to being hit by something hard traveling slowly. They tested large glass plates with two kinds of interlayers and glass types. The glass and the hitting thing were suspended to lessen outside influences. They increased the impactor’s speed until the glass broke to see how hard it could get hit. Testing also helped fine-tune computer simulations that correctly predicted impact speeds and forces for both types of interlayers, confirming earlier research on polymer properties. The simulations showed that the type of material between glass layers impacts how glass reacts when hit, especially considering temperature, impactor weight, and speed. They also found that modeling materials as either elastic or viscoelastic worked well for predicting how the glass would behave depending on the situation.