Structural & Non-Structural Repair Techniques Flashcards

What is the primary difference between structural and non-structural repairs?

Answer: Structural repairs restore frame integrity, non-structural repairs are cosmetic

The primary difference lies in the affected components and their function. Structural repairs focus on restoring the integrity of the vehicle's frame or unibody, which is essential for safety and handling. Non-structural repairs, conversely, address cosmetic damage to exterior panels, paint, or interior components, which do not impact the vehicle's core safety or operational structure.

Which tool is commonly used in structural repairs for frame alignment?

Answer: Frame straightening machine

A frame straightening machine is the specialized tool commonly used in structural repairs to correct and realign a vehicle's damaged frame or unibody. These powerful machines apply controlled force to pull and push the frame back into its original factory specifications. This process is crucial for restoring the vehicle's structural integrity, safety, and proper alignment after a significant collision.

Why is MIG welding commonly used in structural repairs?

Answer: Because it provides strong, precise welds

MIG welding is commonly used in structural repairs because it produces strong, precise, and durable welds. This method allows technicians to achieve excellent penetration and fusion, which is critical for restoring the vehicle's structural integrity and ensuring safety after a collision. Its efficiency and control make it ideal for demanding automotive applications.

What is the primary purpose of panel bonding adhesives in non-structural repairs?

Answer: To bond non-structural panels securely

Panel bonding adhesives are primarily used to securely attach non-structural panels, such as door skins or quarter panels, without the heat distortion associated with welding. This method creates a strong, durable bond that helps maintain the vehicle's original corrosion protection and finish. It also contributes to reduced noise and vibration, enhancing overall vehicle quality.

Which method is commonly used for dent repair in non-structural damage?

Answer: Paintless Dent Repair (PDR)

Paintless Dent Repair (PDR) is a specialized technique for removing minor dents and dings without damaging the original paint. Technicians carefully manipulate the metal from behind the panel, restoring its original shape. This method is preferred for non-structural damage because it preserves the factory finish, saving time and cost by avoiding repainting.

Why is corrosion protection important after structural repairs?

Answer: To prevent rust and ensure long-term durability

Corrosion protection is vital after structural repairs because the repair process often exposes bare metal, making it susceptible to rust. Applying protective coatings like primers and sealants prevents rust formation, which can weaken the repaired area over time. This ensures the long-term durability, safety, and structural integrity of the vehicle.