Notes

Slide Show

Outline

1	Identification and Interpretation of Directional Indicators in Contact-Damaged Paint Films Applications in Motor Vehicle Accident Reconstruction Neil Clark, Roger E. Clark ROGER CLARK ASSOCIATES
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3	Paint Film on Metallic Panel.
4	Paint Film on Non-metallic Panel.
5	Stellate (Burst) Fractures in Resilient Finish Produced by Hammer-blow Behind Panel.
6	Tracing of Stellate Fracture in Rigid Finish on Metallic Panel Struck from Behind.
7	Stellate Fracture in Rigid Finish on Metallic Panel Struck from Behind.
8	Found Stellate Fracture from Internal Contact to Sheet Metal Panel.
9	Ring Fractures in Resilient Paint Film Produced by Hammer-blow to Surface.
10	Ring Fractures Found in Resilient Paint Film of Bumper Cover.
11	Idealized Chain of Ring Fractures Produced by Sliding Contact.
12	Found Chain of Ring Fractures Caused by Indenting Contact – Note Multiple, Straight “Linking” Fractures Between Rings.
13	Ripples Generated in Rigid Paint Film by Sliding Contact in Direction of Arrow.
14	Chips Detached from Rippled Paint Film - Note Alternating Straight- and Curved Edges.
15	Tracing of Chips Detached from Rippled Paint Film – Note Alternating Straight- and Curved Edge Fractures.
16	Side Fractures Diverge at 45 Degrees to Each Side of Contact Line Isolate “Fan-shaped” Chip.
17	Conical Ballistic Hole in Glass – 3-Dimensional Fan Chip?
18	Chain of “Fan” Chips Produced by Moving Scratch.
19	Chain of Fan Chips Produced in Pendulum Impact Test.
20	Tears- and Ripples Found in Resilient Paint Film.
21	Overlapping Fan Chips from Parallel Contact Furrows.
22	Overlapped Chains of Fan Chips Produced in Pendulum Test.
23	Curved “Outlines” of Face Fractures still Adhere Within Scrapes.
24	Idealized “Adhesions” Within Chain of Nested Fan Chips.
25	Multiple, Curved Adhesions Within “Found” Gouge Mark.
26	Eccentric, Stepped “Conchoidal” Chip Hole From Contact Exiting Paint Film.
27	Stepped, Conchoidal Chip Hole from Contact Exiting Paint Film.
28	Conchoidal Chip from Contact Exiting Contoured Paint Film (side view).
29	Conchoidal Chips from Test Scrape Across Wheel Arch.
30	Conchoidal Chips from Test Scrape Across Panel Ridge.
31	Found Conchoidal Chip in Panel Edge Produced by Contact with Adjacent Panel.
32	Alleged Hit & Run
33	Barely-Visible Side- & Face Fractures.
34	Dent & Scrapes from Broadside Collision.
35	Curved Faces of Nested Fan Chips Distinct.
36	Inconclusive Component Displacement.
37	Small Scratch Exposed Primer,
38	Bronco Swerved on Dirt Road, Tumbled into Dry Wash.
39	Heavy Damage with Inconclusive Displacement…
40	Scratch Shapes Appear Contradictory.…
41	Scratches & Scrapes Travel “Inward” – A Right-Side-Leading Over-turn.
42	Knife-Edge Burrs Confirm Inward Motion from Right-Side-Leading Over-turn.
43	Our thanks to H.H. ”Harry” Hurt Jr., Prof. Emeritus, USC, and founder of the Head Protection Research Laboratory, for his ceaseless encouragement toward the completion- and publication of this project.