Which type of material can modern repair techniques utilize for welding and bonding?

Modern repair techniques have evolved significantly, allowing for the use of a variety of materials in welding and bonding processes. Thermoplastics are particularly notable among these materials. They can be melted and reformed multiple times without significant degradation, which makes them ideal for repair applications. This versatility allows technicians to achieve strong, durable bonds and repairs that can withstand the stresses encountered in various environments.

Thermoplastics have advantageous properties, such as resistance to chemicals and moisture, which enhance the longevity and effectiveness of repairs. They can be fused together using techniques such as heat welding or adhesive bonding, providing a solid bond that is necessary for effective repairs.

In contrast, while metals and plastics can also be repaired, the term "only" in the other options implies a limitation that does not reflect modern capabilities. Advances in bonding methods like adhesives have expanded the types of materials that can be effectively bonded, making thermoplastics a suitable choice for effective repairs in various applications.