Uploaded by LennartStrandberg on Aug 17, 2009
Enjoy the funny sliding motions of the female subject and compare them to the guy rushing on the same walking surface but with other shoes. The stainless steel surface was covered with glycerol in both cases.
In my Swedish research group we carried out these and other experiments with walking subjects in the early 1980's (sorry for poor image and sound quality). However, the results are still relevant and have been presented 20 years later in the U.S. as state-of-the-art in biomechanics and tribology.
Force and motion measurements revealed three necessary requirements for slip-resistance on surfaces with viscous contaminants like mud or melting snow:
Drainage, Draping and Damping.
Without DRAINING capacity of the tire tread or sole pattern, the rubber cannot drape itself around the asperities of the solid surface.
And without DRAPING the DAMPING properties of the rubber are useless. Cf. my video clip with two different types of rubber - one high damping hysteresis rubber and one elastic without damping.
For scientific details: see my papers in the literature. Co-authors are e.g. Håkan Lanshammar from University of Uppsala in Sweden, Raoul Grönqvist and others at the Liberty Mutual Research Institute for Safety in the vicinity of Boston, Massachusetts, USA.
To the memory of medical student Lars Hildeskog, who controlled the experiments, maintained the laboratory and operated the computerized equipment - in spite of his painful disease, which took his life a few years later.
Category:
Tags:
- slip and fall
- slip-resistance
- adhesion
- friction
- traction
- tire
- tyre
- walking
- gait
- shoe
- sole
- slippery
- floors
- skidding
- hydroplaning
- aquaplaning
- mud
License:
Standard YouTube License
-
2 likes, 1 dislikes
1:04
ICE TRACTION STRAPSby actiontoolsca2,576 views
0:32
Unbelievable slippery floor!by loonybrain10,362 views
2:26
Frictionby sheellap64,694 views
0:50
Slippery floor?by princesslissa20072,028 views
4:34
Dirty Dancing for the Laboratoryby ksuds013879 views
0:17
Jacky running on ice(2009)by Thjeko3,166 views
2:21
FUNNY STEWARD SOUTHWEST AIRLINES RAPPING SAFETY INFORMATIONby ksdzvdhydsh1,275 views
2:42
"Throwing Strips" - A Diabetic Emergency Parodyby I2est9,795 views
1:42
5.10 Camp Fourby Clintnvilleoutfitter2,292 views
8:25
PETER NANDE BAND - Goodbye Little Girlby AlruneRod28111,189 views
2:56
ATTAR Slip Resistance Testingby ATTARSLIP1,528 views
2:03
A horror bus ride, skidding down the Remarkables ski resort mountain road.by MrRegmombassa1,620,106 views
1:21
Medical Laboratory Technicianby medlabtek69,946 views
0:30
Doctors say you can smoke!by safetyhealthtraining2,391 views
0:25
Golf Swing 300 fps Slow Motion to Fast Musicby LennartStrandberg1,266 views
9:32
Dynamic Walking 2009 Demonstrationsby DynamicWalking428 views
0:30
Skidcar lifting rear axle on front wheel driven carby LennartStrandberg93,027 views
2:08
Leftywtwby TNUkennels938 views
1:31
Dog jump in 600fps slow motion. Biomekaniskt hundhopp i ultrarapid.by LennartStrandberg616 views
0:54
Scared to Death, scare tactics in the laboratory FUNNYby missmelysah610 views
- Loading more suggestions...
Link to this comment:
All Comments (0)