The synthesis and characterization of advanced green materials for automotive and aerospace applications cover the latest innovative research work on green materials by reinforcing fly ash, natural fibers, industrial wastes, and scraps in the metallic and non-metallic matrix. The fly ash developed during process manufacturing consists of rich silica content that can be used to develop green materials. Green materials can be developed by solid-state processing, liquid-state processing, and vapor deposition methods. The mechanical properties, wear, and corrosive behavior can be explored. In addition, surface treatment methods, joining techniques, and machinability of green materials can be investigated. The additive manufacturing of green materials can be synthesized and characterized.

Waste management is an emerging area where industries are struggling to manage the solid and liquid wastages produced during operations. Several agricultural wastes, aluminum, other metallic chips, fly ash and electronic scraps are disposed of in the land which results in pollution. Waste handling techniques are used by the industry, however, the wastages can be used for developing new products for engineering applications.

In this Special Issue, we invite the researchers and academicians to contribute original research and review articles in the fields of green materials, biomaterials, advanced functional materials, hybrid composites, surface modifications, joining methods, and machinability studies.

Potential topics include but are not limited to the following:

• Green composites
• Metal matrix composites
• Polymer matrix composites
• Natural fiber-reinforced composites
• Ceramic matrix composites
• Hybrid composites
• Nanocomposites
• Biocomposites
• Welding of green materials
• Machinability studies of green materials
• Surface modification and additive manufacturing