... bluegrass ( Poa pratensis L.) or perennial ryegrass ( Lolium perenne L.) with different fertilizer management regimes. reduced light conditions sand-based root zone athletic fields fertility crumb rubber impact absorption traction plant growth regulator turfgrass J. N. Rogers, III, 1 J. C...

... An apparatus was developed and field tested to measure traction. The apparatus consists of a framework that supports a leg and foot assembly that can be used to measure both rotational and linear traction using different footwear under various loading weights. The force required to cause foot...

... to the legal minimum tread depth. tire traction roadhold wet conditions A. R. Williams 1 A Review of Tire Traction REFERENCE: Williams, A. R., "A Review of Tire Traction," Vehicle, Tire, Pavement Interface, A S T M STP 1164, J. J. Henry and J. C. Wambold, Eds., American Societyfor Testing...

... For athletic fields used for soccer (association football), important components of playing quality include: ball rebound resilience, rolling resistance, traction (i.e., grip), and hardness. Other criteria related to, but not direct measures of, playing quality include surface evenness, grass...

... for soccer, it is necessary to consider both ball/surface and player/surface interaction. The principal techniques for testing surfaces used in Britain are ball rebound resilience, rolling resistance, traction/friction, sliding resistance, surface hardness (using Stuttgart and Berlin Artificial Athlete...

... fields impact absorption shock absorption shear resistance traction Kentucky bluegrass Poa pratensis L. tall fescue Festuca arundinacea Schreb. soil compaction aeration core cultivation soil moisture thatch John N. Rogers l i p and Donald V. Waddington2 Effects of Management Practices...

... Several levels of ceramic test devices are recommended for the tribological evaluation of ceramic materials for high thermally and mechanically stressed rolling element bearings. A high temperature traction rig, four-ball rig, and full-scale bearing rig provide a systematic series of tests...

.... A comparison is made of the data and information produced by each of these measurement methods. Attempts to relate the data produced by each of these methods are reviewed, and the reasons for their lack of agreement are discussed. In addition to direct traction measurement methods, texture measurements...

... to the understanding of the general problem of wet traction. A description is given of the mathematical techniques that have recently been developed to assist in the study of hydroplaning (and wet traction). It is shown that these allow a unified theory to be presented for the major forms of hydroplaning — viscous...

... and its attachment system. surface properties texture tires friction treads traction S. K. Clark 1 Interactive Tire Designs REFERENCE: Clark, S. K., "Interactive Tire Designs," Surface Texture Versus Skidding." Measurements, Frictional Aspects, and Safety Features o f Tire-Pavement...