Recreating racetrack surfaces in labs possible

A together with B exhibit a Clegg Hammer, which is used to assess surface compaction. C shows a sheer vane tester, which is used to assess surface horizontal properties. The shear Vane is rotated slow until the sample fails to guess the shear strength.

You tin bathroom accept the scientist to the racetrack, precisely is it possible to accept the racetrack to the scientist?

A query article, published inwards the open-access journal, PLoS ONE, suggests you lot can.

The Track Testing Device (TTD) was attached to a portable frame that was placed on overstep of the surface at the racetracks together with to a fixed frame inwards the laboratory. The TTD dropped a 27.8 kg, 12.7 cm diameter volume from 20.3, 30.5, together with 40.6 cm to simulate the effective mass, surface area, together with impact velocity of the hoof during fast trot together with tiresome gallop. Forces together with linear displacement were collected at two kHz using custom software .

Racetrack surfaces acquaint a lead a opportunity inwards price of racehorse injuries together with fatalities.

Current query indicates that race surface mechanical properties may live on influenced past times cloth composition, wet content, temperature, together with maintenance.

Mechanical testing of race surfaces inwards a controlled laboratory setting would permit for objective evaluation of dynamic properties of surface together with factors that impact surface behavior.

American researchers begin to prepare a method for reconstruction of race surfaces inwards the laboratory together with and hence validate the method past times comparison its functioning amongst the actual racetrack surface.

Track-testing device (TTD) impact tests were conducted to simulate equine hoof impact on dirt together with synthetic race surfaces; tests were performed both at the racetrack together with using laboratory reconstructions of harvested surface materials.

Clegg Hammer measurements were used to guide surface reconstruction inwards the laboratory.

Dynamic surface properties were compared betwixt the existent rails together with recreated surface inwards the laboratory. The researchers flora the differences were small.

“Most dynamic surface belongings setting differences (racetrack-laboratory) were small-scale relative to surface cloth type differences (dirt-synthetic),” they found.

The conical spikes (92) of the custom crunch device were 1.9 cm wide, 2.5 cm high, together with spaced 3.5 cm apart.

“Clegg Hammer measurements were to a greater extent than strongly correlated amongst TTD measurements on the synthetic surface than the dirt surface. On the dirt surface, Clegg Hammer decelerations were negatively correlated amongst TTD forces.

“Laboratory reconstruction of racetrack surfaces guided past times Clegg Hammer measurements yielded TTD impact measurements like to inwards situ values. The negative correlation betwixt TTD together with Clegg Hammer measurements confirms the importance of musical instrument volume when drawing conclusions from testing results.

“Lighter impact devices may live on less appropriate for assessing dynamic surface properties compared to testing equipment designed to simulate hoof impact (TTD).”

The researchers said their query showed that dynamic impact properties of race surfaces could live on evaluated inwards a laboratory setting, allowing for farther written report of factors affecting surface deportment nether controlled conditions.

 

Setterbo JJ, Chau A, Fyhrie PB, Hubbard M, Upadhyaya SK, et al. (2012) Validation of a Laboratory Method for Evaluating Dynamic Properties of Reconstructed Equine Racetrack Surfaces. PLoS ONE 7(12): e50534. doi:10.1371/journal.pone.0050534

 

 

 

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