2 edition of Effects of pavement grooving on friction, braking, and vehicle control found in the catalog.
Effects of pavement grooving on friction, braking, and vehicle control
J. E. Martinez
by Dept. of Transportation, Federal Highway Administration, Offices of Reearch and Development, for sale by the National Technical Information Service in Washington, Springfield, Va
Written in English
|Statement||J. E. Martinez, R. D. Young, W. C. Faatz.|
|Series||Report - Federal Highway Administration ; no. FHWA-RD-76-166|
|Contributions||Young, R. D., Faatz, Wayne C., United States. Federal Highway Administration. Office of Research., United States. Federal Highway Administration. Office of Development.|
|The Physical Object|
|Pagination||xii, 179 p. :|
|Number of Pages||179|
1. Introduction. The skid resistance of airport runway pavement as it pertains to airplane landing and take-off serviceability is one of the major safety measures in a pavement management te runway conditions not only ensure the proper braking distance for airplanes but also provide better maneuvering during high winds and other unexpected by: 2. Kinetic or Sliding Friction Kinetic or Sliding Friction is created when two objects are touching and sliding against each other. For example, if you drive on a slippery road, or stop suddenly, your tires may slide against the pavement. When your tires slide against the pavement, you will be more likely to lose control of your vehicle.
Skidding happens when the friction of your brakes is stronger than the friction between your tires and the road; this causes you to lose traction. The kinetic energy of your vehicle can't be converted into friction in your brakes (heat energy) when your brakes are locked, because they're in . of Friction. wIncreased Braking wIntermittent wsliding. Pavement Friction versus Tire Slip (Henry, ) Friction increases rapidly with increasing slip Peak value between 10 and 20 percent slip (critical slip) Friction decreases to coefficient of sliding friction at percent slip Difference between the peak and sliding coefficients mayFile Size: 1MB.
Outcomes Understand vehicle, tire, geometric, and environmental factors in braking and control Learn what pavement surface properties control “available friction” Greater understanding of tire/pavement interface Understand how we measure “available friction” and use the data Questions/commentsFile Size: KB. 3) Little Book of Friction Principles of Friction Measurement Equipment: 2. Longitudinal Friction Coefficient (LFC) in line with the direction of travel. i. Fixed gear, or braking system, the ratio of vertical and drag forces is calculated ii. Wide range of slip ratios iii. The slip ratio is governed by the control system determines the slip.
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Effects of Pavement Grooving on Friction, Braking, and Vehicle Control J. Martinez, Texas Transportation Institute, Texas A&M University Pavement grooving is a technique by which longitudinal or transverse cuts are introduced on a surface to increase skid resistance and reduce the number of wet-weather Size: 4MB.
Get this from a library. Effects of pavement grooving on friction, braking, and vehicle control. [J E Martinez; R D Young; W C Faatz; United States. Federal Highway Administration.; Texas Transportation Institute.] -- A comprehensive literature review and laboratory and full-scale tests were performed to develop mathematical models that would predict the effects of pavement grooving on.
Full text of "Effects of pavement grooving on friction, braking, and vehicle control" See other formats. Effects of pavement grooving on friction, braking, and vehicle control.
Final report. Components of Tire Pavement Friction Tire pavement friction is the result of two main forces, adhesion and hysteresis. Adhesion is due to the molecular bonding between the tire and the pavement surface while hysteresis is the result of energy loss due to tire deformation.
As the tire comes into contact with the pavement, theFile Size: KB. Abstract. Topics of discussion are: (1) technique for evaluating hydroplaning potential of pavements; (2) effects of pavement grooving on friction, braking, and vehicle control; (3) photographic technique for estimating skid number and speed gradients of pavements; (4) relation of accidents and pavement friction on rural, two-lane roads; (5) critique of tentative skid-resistance guidelines; (6 Author: S.
Agrawal, J. Henry, J. Martinez, B. McDonald, R. Blackburn. The effects of grooving on motorcycle handling can be particularly serious due to the motorcycle's lack of inherent roll stabili ty in comparison with four-whee led vehicles. The intent of this study was to determine whether the negative effects of grooved pavement.
An improved friction model that considers the effect of sliding speed on friction coefficients was implemented to analyze the effects of pavement surface friction on contact stresses, friction forces, and cornering forces. The results showed that the magnitudes and nonuniformity of contact stresses are affected by vehicle-maneuvering conditions.
Worn Tire, Grooved Pavement Worn Tire, Porous Friction Course Hydroplaning 41 Braking on an Asphalt Pavement Under a Heavy Downpour 0 10 20 30 40 50 60 30 50 70 90 Braking Coefficient Speed (knots) Worn Tire, Grooved Pavement, Puddled Worn Tire, Porous Friction Course, Wet Hydroplaning The braking functions in the target vehicle are realized with electro-hydraulic decoupled friction brake system and electric motors operating in a braking mode.
Abstract. Grooves are frequently used on airport runways to address safety concerns by improving frictional properties and drainage capacity during wet weather. Groove performance deteriorates over time mostly due to traffic loading, accordingly periodic measurement and evaluation of groove dimensions are important for runway to maintain adequate Cited by: 7.
Effects of pavement grooving on friction, braking, and vehicle control. Published Date: [PDF MB] Viewer; Pavement surface texture plays important roles in roadway safety and noise issues.
More t deaths and million injuries occurred in more than 6 million vehicle crashes in the U.S. in (NHTSA ) and Cited by: 9. EFFECTS OF PAVEMENT TEXTURE ON WET-RUNWAY BRAKING PERFORMANCE By Trafford J. Leland, Thomas J. Yager, and Upshur T. Joyner Langley Research Center SUMMARY An extensive test program was conducted at the Langley landing-loads track to investigate the effect on braking of tire tread pattern and tread materials for a variety of runway Size: 1MB.
performance of conventional heavy vehicle brakes. The local Electronic Control Units (ECUs), included with the new FABV design, have additional computing capacity that can be used to carry out other wheel-based braking functions.
These are expected to include: tyre-road friction coe cient estimation, brake torque control,Cited by: 1. Session 9: Diamond Grinding and Grooving.
Learning Outcomes 1. Differentiate between diamond grinding and Diamond Grooving Effect on Friction Grooving Fig. on p. Diamond Grooving Project Selection – Significant braking traction – Difficult to conduct under traffic – Noise may be an issue 9‐ Diamond Grooving.
Hydroplaning on a pavement surface with a film of water occurs when a vehicle reaches a critical speed and results in a loss of contact between its tires and the pavement surface.
various designs of longitudinal grooving against hydroplaning. The analysis covers groove widths of 2 to 10 mm, grove depths of 1 to 10 mm, and groove center-to-center spacing of 5 to 25 mm.
Groove dimensions are found to have significant effects on the effectiveness of a grooving. Pavement grooving is a technique by which longitudinal or transverse cuts are introduced on a surface to increase skid resistance and to reduce the number of wet-weather crashes.
The grooves increase skid resistance by improving the drainage characteristics of the pavement and by providing a rougher pavement surface.
Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit to get more information about this book, to buy it in print, or to download it as a free PDF. Below is the uncorrected machine-read text. Effects of pavement grooving on friction, braking, and vehicle control [PDF - MB] Effect of friction on rolling tire-pavement interaction.
Published Date: distribution of contact tractions at theinterface) plays an important role in the analysis of pavement performance and vehicle driving tire‐pavement Cited by: 5.
Larson, R.M., â Consideration of Tire/Pavement Friction/Texture Effects on Pavement Structural Design and Materials Mix Design,â Federal Highway Administration, Office of Pavement Technology, Washington, D.C. ().Technique for evaluating hydroplaning potential of pavements / S.K.
Agrawal, J.J. Henry --Effects of pavement grooving on friction, braking, and vehicle control / J.E. Martinez --Photographic technique for estimating skid numbers and speed gradients of pavements / L. Bruce McDonald, Robert S. Blackburn, Donald R.
Kobett --Relation of accidents.This paper aims to simulate the effects of different friction models on tire braking. A truck radial tire (/80R) was modeled and the model was validated with tire deflection.
An exponential decay friction model that considers the effect of sliding velocity on friction coefficients was adopted for analyzing braking performance. The result shows that the exponential decay friction model Cited by: 7.