Vehicle in Motion – 18 Days
Vibration / Shock
Shock was measured for three different sensor positions : ( a ) sitting on the vehicle dashboard , ( b ) sitting inside a tray that is sitting inside a rigid container on an unpadded shelf , and ( c ) sitting inside a tray which is inside a rigid container sitting on a padded shelf .
The dashboard sensor experienced the highest degree of shock . For the four different vehicles in our study the dashboard sensor experienced an average of 425 shock events greater than 1g for the timeframe in our experiment .
This compares with an average of 240 events greater than 1g for the same sensor positioned inside a tray . And finally , the single sensor in a tray and its container sitting on a padded shelf , produced just 63 shock events greater than 1g during the time period .
We see similar results when we increase the cut-off from 1g to 4g . The dashboard sensor experienced an average of 16 shock events exceeding 4g during the timeframe . This compares with an average of seven greater-than-4g shock events for the tray inside a container , and just 4 shock events of this magnitude for the single tray on a padded shelf .
Conclusion
As indicated earlier , this was not started to prove a point , validate a theory , or produce conclusions that dictate new norms for transportation . Our objective was to conduct a very simple study which helps us right-size the new logistics challenge at hand . We showed up to our first experiment with no real expectations or pre-game predictions . We didn ’ t know if we ’ d find instruments “ getting hot faster because it ’ s hotter inside a container ,” or “ instruments taking longer to get hot because the container is a physical barrier to heat transfer just like any other container .”
22 • www . healthcarehygienemagazine . com • april 2024