What is the consequence of excessive tightening of the frame to acrylic plastics?

When frame assemblies are tightened excessively against acrylic plastics, the primary consequence is the potential for cracking or damage to the material. Acrylic plastics, known for their clarity and lightweight properties, are also sensitive to stress and pressure. Excessive tightening generates stress concentrations at the points of contact, which can cause the acrylic to crack or break.

Acrylic does not have the same flexibility as some other materials, so it has a lower tolerance for stress. Over-tightening can compromise its physical integrity, leading to failures that can be critical, especially in applications where structural integrity is vital, such as in aircraft windows or displays. Therefore, it's essential to follow specified torque values and recommendations for fastening and assembly to avoid such damage.

This understanding of material properties and their responses to environmental and mechanical forces is fundamental in ensuring the longevity and safety of structures involving acrylic plastics.