31. This is commonly seen in asphalt roads subject to shear stress imposed by aseismic fault creep. 32. Fluid shear stress is also a potential problem if the glycocalyx is degraded for any reason. 33. Another similar experiment was carried out to determine what kinds of stimuli cause fluid shear stress . 34. The equation can be applied either to the shear stress or normal stress of a material. 35. This dimensionless shear stress , \ tau *, is called the Shields parameter and is defined as: 36. A notable aspect of this model is that shear stress is constant throughout the flow domain. 37. The other is the resistance of the liquid to shear stress , as measured by its viscosity. 38. Starch can also be injected into the blood stream in order to increase viscosity and shear stress . 39. He is the discoverer of the Tresca ( or maximal shear stress ) criterion of material failure. 40. Where \ tau is the shear stress , and \ dot { \ gamma } the shear rate.