Search Results

Fatigue design has to account for the scatter of component geometry, material behavior and loading. Scatter of the first two variables is mainly due to manufacturing and material sourcing. Loading on the other hand depends decisively on operating conditions and customer usage. Loading is certainly most difficult to determine. Tests on proving ground or even long-term real time measurements are used to obtain actual load time histories. Because of the costs of measurements and safety measure, real-time measurements are used exceptionally to gain changes in the usage profile. In this paper, an attempt has been made to find the difference in the extrapolated data to the actual data. A comparison has been made between the actual road distance of 2000 km to the extrapolated data of 100 km, 500 km and 1000 km to 2000 km. The front Axle channel is taken for the study.

Weathering is the adverse response of a material or product to climate, often causing unwanted and premature product failure. The research and literature review shows that, in addition to the standard signaling devices, the retro-reflective marking is intended to increase the visibility (recognition) over a wide range of distances and for an easy identification of vehicles. The main characteristics of retro-reflective marking are Type of material, Coefficient of retro-reflection, Efficiency, Colour, Aging, Soiling, Shape and Pattern. Materials used for the retro reflective materials offer an impressive range of attractive properties, however the effect of weathering conditions on the durability and performance of these materials are not fully understood. The initial study conducted to provide degradation effect on retro reflective material due to weathering and its effect on road safety by simulating the weathering conditions in the laboratory as a part of accelerated tests.