ASE Structural Analysis & Damage Repair 2 — Questions and Answers
Question 1: When measuring a unibody vehicle for structural damage, which point on the body is used as the reference for all dimensional measurements?
- The closest undamaged datum point (Correct answer)
- The front bumper mounting bolt
- The roof centerline only
- The rear license plate bracket
Correct answer: The closest undamaged datum point
Datum points are established undamaged reference points used to verify correct dimensional measurements.
Question 2: A vehicle pulled in for repair shows a buckle in the rocker panel and a misaligned door. This indicates damage in which structural area?
- Cosmetic only
- The lower body / side structure (Correct answer)
- The exhaust system
- The interior trim
Correct answer: The lower body / side structure
Rocker panel buckling and door misalignment indicate collapsed or shifted lower side structure.
Question 3: What term describes the condition where the centerline of the vehicle is bent into a banana-like shape?
- Sag
- Mash
- Sidesway (Correct answer)
- Twist
Correct answer: Sidesway
Sidesway damage bends the structure sideways off the centerline.
Question 4: Which gauge is hung from reference points beneath a unibody to visually check for vertical and horizontal misalignment?
- Feeler gauge
- Centering (self-centering) gauges (Correct answer)
- Bore gauge
- Wire gauge
Correct answer: Centering (self-centering) gauges
Self-centering gauges hang under the body and reveal misalignment by their visual relationship.
Question 5: Before pulling on a damaged unibody, why must the vehicle be properly anchored?
- To charge the battery
- To prevent the whole vehicle from moving instead of straightening (Correct answer)
- To align the headlights
- To bleed the brakes
Correct answer: To prevent the whole vehicle from moving instead of straightening
Anchoring holds the vehicle so pulling force straightens the structure rather than dragging the car.
Question 6: Kink damage in high-strength steel structural members should generally be:
- Heated and straightened repeatedly
- Sectioned or the part replaced (Correct answer)
- Ignored if cosmetic
- Filled with body filler
Correct answer: Sectioned or the part replaced
Kinks in high-strength steel are usually replaced or sectioned because the metal cannot be safely restraightened.
Question 7: A 'bend' versus a 'kink' in a structural rail differs primarily in:
- Color of the metal
- The sharpness of the radius of deformation (Correct answer)
- The paint type used
- The length of the rail
Correct answer: The sharpness of the radius of deformation
A bend has a gradual radius and may be straightened, while a kink has a sharp, abrupt radius requiring replacement.
ASE Structural Analysis & Damage Repair 2
When measuring a unibody vehicle for structural damage, which point on the body is used as the reference for all dimensional measurements?