Standard

 

ACR 121 - Unibody Identification and Damage Analysis

Course Description

Provides instruction in the identification and analysis of various forms of unibody damage. Topics include: collapse or buckle damage identification, sag damage identification, sideways damage identification, twist damage identification, secondary damage identification, and lift equipment usage and safety.

 

 

Competency Areas

Hours

 

Collapse or Buckle Damage Identification

Class

1

Sag Damage Identification

D. Lab

2

Sideways Damage Identification

P. Lab/O.B.I.

2

Twist Damage Identification

Credit

2

Secondary Damage Identification 

 

 

Lift Equipment Usage and Safety

 

 

 

 

 

Prerequisite:

ACR 109

Corequisite:

 

 

Course Guide

 

Competency

After completing this section, the student will:

Hours

Class

D.Lab

P.Lab/

O.B.I.

COLLAPSE OR BUCKLE DAMAGE IDENTIFICATION

                                                                       

1

2 

4

Location and measurement

Explain why location of buckles identifies the type of damage.

 

 

 

 

Demonstrate ability to properly locate collapse damage by visual inspection, and tape or tram measurement.

 

 

 

SAG DAMAGE IDENTIFICATION                                                                                  

1

2 

4

Location and measurement       

Analyze sag damage by visual, tape or tram measurement, and by visual inspection of body panels, bumpers, etc.

 

 

 

SIDEWAYS DAMAGE IDENTIFICATION         

1

4 

2

Location and measurement

Analyze sideways damage by tape or tram measurements, and visual inspection of body components.

 

 

 

TWIST DAMAGE IDENTIFICATION     

1

4 

2

Location and measurement

Analyze twist damage using tape or tram measurements, leveling vehicle on stands, and/or datum line measurements.

 

 

 

SECONDARY DAMAGE IDENTIFICATION

4

6 

6

Unibody construction

Explain how impact forces are transmitted through unibody construction.

 

 

 

Types of misalignment

Explain the different type of unibody misalignments.

 

 

 

Location and measurement

Demonstrate ability to analyze secondary damage by: visual inspection, tape or tram measurements, and use of zone concept.

 

 

 

 LIFT EQUIPMENT USAGE AND SAFETY

2

2 

2

Procedures

Explain procedures to properly and safely use all types of lift equipment blocks, and supports.

 

 

 

 

Explain the safe procedures to use in performing all operations.

 

 

 

 

Suggested Resources

 

Books

 

Author. (1982). Blackhawk: Science of unibody. Norcross, GA: Applied Power, Inc. (Also slide series.)

Chudy, H. T. (1988). The complete guide to automotive refinishing (2nd ed.). Englewood Cliffs, NJ: Prentice Hall.

Deroche, A. G. (1988). Automotive collision estimating and repair. Englewood Cliffs, NJ: Prentice Hall.

Deroche, A. G. (1988). Automotive refinishing handbook. Englewood Cliffs, NJ: Prentice Hall.

Duenk, L. G., et al. (1984). Auto body repair. Encino, CA: Bennett & McKnight.

I-CAR. (1984). Unibody auto collision repair (Series 1-9). Des Plaines, IL: Author.