Mechanics of Biological Systems and Materials and the Mechanics of Composite, Hybrid & Multifunctional Materials, Volume 3 of the Proceedings of the 2025 SEM Annual Conference & Exposition on Experimental and Applied Mechanics, the third volume of five from the Conference, brings together contributions to important areas of research and engineering. The collection presents early findings and case studies on a wide range of topics, including:

• Biomechanics of Tissue
• High-rate Behavior of Biological and Biorelevant Materials
• Mechanics and Morphogenesis of Multicellular Systems
• Cellular Biomechanics
• Mechanics of Functional Bioarchitectures
• Novel Techniques in Biomechanics and Mechanobiology
• Recycled Constituent Composites
• Damage Detection
• Advanced Imaging of Composites
• Multifunctional Materials
• Composite Interfaces
• Tunable Composites
• Time Dependent Materials