Boom Time

On Tuesday and Wednesday, Kris and I traveled to Buffalo, NY to visit the HYGE Crash Test Sled Facility at Calspan. The company very generously offered to test Mechanek in a Frontal Crash Test. 

Tuesday was setup day. We designed the test to be as close to SFI 38.1 as possible - the standard developed for the HANS device. 

                                                                                      Crash Test Dummy no. 366 awaiting his fate

We conducted two tests - one with an off-the-shelf HANS device and another with the Mechanek device. In both tests, the gas piston was charged to 2600PSI, resulting in a sled acceleration of around 40g's, reaching ~35mph in less than 50ms. 

The Anthropomorphic Test Device (ATD) was fully instrumented with a 3-axis head accelerometer, a 3-axis thorax accelerometer, and neck load cells, all collecting data at 2kHz. Calspan trained four IDT high-speed cameras on the sled for both crashes, each shooting at 1000fps. 

The three videos above show our first test with the HANS device. 

Results from the tests were overwhelmingly positive. We had hoped to prove similar performance between the HANS and Mechanek devices. We ended up showing that Mechanek, in proper usage and operating conditions, can show a ~30g decrease in the resultant head acceleration for the specific crash pulse tested. 

                                                      Test 1 - HANS Device : Notice the ATD Head Resultant Acceleration Max = 122.70 [g's]

                                                      Test 1 - HANS Device : Notice the ATD Head Resultant Acceleration Max = 122.70 [g's]

                                                    Test 2 - Mechanek Device : ATD Head Resultant Acceleration decreased to 94.58 [g's]

                                                    Test 2 - Mechanek Device : ATD Head Resultant Acceleration decreased to 94.58 [g's]