JOBR: “2121_c052” — 2006/2/6 — 19:55 — page 9 — #9
Mechanics of Head/Neck
52-9
240
220
200
180
160
140
120
100
80
60
40
20
0
5
10
15
20
25
30
35
40
45
Time (msec)
Acceler
ation-0
FIGURE 52.6
The Wayne State Tolerance Curve for head injury.
TABLE 52.2
Tolerance Estimates for MTBI
Tolerance estimate
Variable
(Probability of injury)
25%
50%
75%
HIC
136
235
333
Linear acceleration (m/sec
2
)
559
778
965
Angular acceleration (rad/sec
2
)
4384
5757
7130
Max. principal strain,
ε
(%)
25
37
49
Max. principal strain rate, d
ε/
d
t (sec
−
1
)
46
60
79
ε
·
d
ε/
d
t (sec
−
1
)
14
20
25
Source: King, A.I., Yang, K.H., Zhang, L. et al. 2003. Is head
injury caused by linear or angular acceleration? In
Bertil Aldman
Lecture, Proceedings of the 2003 International IRCOBI Conference on
the Biomechanics of Impact, pp. 1–12.
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