M.I.T. Students Reinvent Running Shoe Lab Testing
23 February 2009
Science and innovation are cornerstones of our business at Newton Running. Over ten years ago, when Newton Running co-founder Danny Abshire first started testing radically different running shoe prototypes, he recognized the importance of a quantitative, scientific results to prove Newton technology designs worked.
However, Danny soon learned that current lab testing is antiquated and frustrating ‘science’ at best. For years now, the standardized running shoe lab test has consisted of a piston that hammers down on the heel of a shoe to test cushioning. There are numerous problems with this testing method, but first and most obviously, it only evaluates the heel – not very useful for Newton shoes, which focus technology in the forefoot of the shoe.
Enter: MIT graduate students.
For their 200 level engineering class, a team of MIT engineering students spent the last semester developing a new running shoe lab test. Here’s the abstract from their presentation:
“Current ASTM tests on running shoes are insufficient because they do not reliably capture the loads and displacements applied to shoes during running. This team will discuss a 3-axis machine that can be used to test running shoes that mimic’s natural running more accurately than conventional tests.
The design is comprised of a phantom foot that replicates the passive properties of a human foot and an actuated base that can impose the relevant kinematics to the running shoe. The shoe is mounted on motor to give a rotational degree of freedom. The shoe and the base are instrumented to measure force and displacement dynamically during the running cycle.
The machine can be calibrated to emulate different types of runners by adjusting the trajectories of the base. As a proof of concept we have collected force, displacement and energy data from the machine.”