I-CAR - Inter-Industry Conference on Auto Collision Repair Certified Structural Repair Techniques Questions and Answers

Question 1

A technician is repairing a unibody vehicle with damage to a front rail made of Ultra-High-Strength Steel (UHSS).
The OEM repair procedure does not specify a sectioning location for this part.
According to I-CAR guidelines, what is the correct repair method?

Accepted Answer

Replace the entire front rail at the factory seams.

Answer

Create a sectioning joint in the least-damaged area away from any reinforcements.

Answer

Use controlled heat to straighten the damaged portion of the rail.

Answer

Apply general sectioning guidelines developed for mild steel.

Question 2

When performing a Squeeze-Type Resistance Spot Weld (STRSW), which of the following is a critical step to ensure a quality weld?

Accepted Answer

Ensuring the total metal thickness does not exceed the welder's maximum capacity.

Answer

Applying a thick layer of weld-through primer to the mating surfaces.

Answer

Cooling the electrode tips with water immediately after each weld.

Answer

Using the lowest possible amperage setting to prevent burn-through.

Question 3

A vehicle's upper apron requires a repair that the OEM specifies should be joined using MIG brazing. What is a key characteristic of the MIG brazing process that differs from traditional GMA (MIG) welding?

Accepted Answer

It adheres the panels together using a filler metal with a lower melting point.

Answer

It creates a stronger bond by fusing the base metals together at a high temperature.

Answer

It uses a higher heat input, which can alter the properties of high-strength steel.

Answer

It does not require any pre-weld panel preparation or cleaning.

Question 4

During a structural straightening process on a full-frame vehicle, a technician uses a computerized measuring system. What is the primary purpose of this equipment?

Accepted Answer

To provide real-time, three-dimensional measurements compared to OEM specifications.

Answer

To identify the type of steel used in the vehicle's frame.

Answer

To apply the correct amount of pulling force automatically.

Answer

To document the technician's hours for the repair order.

Question 5

Which of the following is the MOST critical reason for following OEM-specified repair procedures for structural repairs?

Accepted Answer

To restore the vehicle's original crashworthiness and occupant safety.

Answer

To reduce the overall cost of the repair.

Answer

To ensure the vehicle's paint warranty remains valid.

Answer

To speed up the repair process and improve cycle time.

Question 6

A technician needs to perform a sectioning procedure on a rear unibody reinforcement. The OEM procedure calls for an open butt joint. What joining technique is typically specified for this type of joint on modern high-strength steel structures?

Accepted Answer

MIG brazing.

Answer

Oxy-acetylene welding.

Answer

Adhesive bonding only.

Answer

GMA (MIG) welding.