Table 10. Summary of SIDH3 data (continued). |
||
| Left upper rib acceleration(P) | 8.7 |
-70.9 |
| Left upper rib acceleration(R) | 8.9 |
-69.3 |
| Left lower rib acceleration(P) | 17.7 |
-87.1 |
| Left lower rib acceleration(R) | 18.8 |
-83.8 |
| Spine T12 Y acceleration (P) | 13.8 |
-58.0 |
| Spine T12 Y acceleration (R) | 13.8 |
-55.6 |
| Pelvis Y acceleration | 25.7 |
-126.7 |
| Shaded entries are from FIR100 filter output, all other data are Class 1000. | ||
Data plots from the SIDH3 transducers are presented in appendix B. All data plots are of
class 1000 data.
Slip away lighting standard . Each of the three slip base strain gage
bolts were tightened as close to 44,500 N as possible prior to the test. The actual total
clamping load was 133,890 N. The pickup truck struck the light pole at the intended
location. The force pressing on the struck side of the pole began to build. The left side
of the truck was pushed inward until the C-section frame rail was reached. The frame rail
imparted the force necessary to activate the slip base. The slip base began to slip 0.022
s after initial contact. The tension in each bolt increased before the slip base
activated. The tension increase in each bolt occurred just prior to base activation.
Initially, bolt #1 recorded a decrease in tension before climbing back to a net increase
in bolt tension just before base activation. Bolt #2 and bolt #3 show a gradual increase
in tension before base activation. The pole base exited the foundation base plate by 0.056
s. The pole remained in contact with the truck until the truck came to rest. Bolt #1
remained within the notch on the slip base foundation base plate. Bolt #2 fell 1500 mm to
the right side of the foundation base plate. Bolt #3 was launched downstream by the pole
base during base activation. The bolt landed 22 m from its original installed location.
Table 11 summarizes the strain gage bolt data. Data plots from the strain gage bolts are
presented in appendix D. The pole and mast arm remained bolted together throughout the
test. The simulated light fixture dislodged from the mast arm upon impact with the ground.
A torn bolt-keeper plate was the only damage observed.
