| 1. |
- Glaeser, Klaus-Peter
(författare)
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Active safety of trucks and road trains with wide base single tyres instead of twin tyres
- 2001
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Ingår i: Traffic Safety on Three Continents : International conference in Moscow, Russia, 19-21 September, 2001. - Linköping : Statens väg- och transportforskningsinstitut. ; , s. 63-71
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Konferensbidrag (populärvet., debatt m.m.)abstract
- In 1996 the European Commission started COST Action 334, "Effects of Wide Single Tyres and Dual Tyres" for trucks. The main objective of the action was to establish the relative effects of wide base single tyres and dual tyre assemblies in respect of road pavement damage, vehicle operating costs, vehicle safety, vehicle comfort and environmental aspects (e.g. tyre/road noise). This paper only describes the vehicle safety aspects.
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| 2. |
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| 3. |
- Glaeser, Klaus-Peter
(författare)
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Safety of retreaded tyres
- 1998
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Ingår i: Proceedings of Road safety in Europe. Conference in Bergisch Gladbach, Germany, September 21-23, 1998. - Linköping : Statens väg- och transportforskningsinstitut. ; , s. 19-31
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 4. |
- Sandberg, Ulf, et al.
(författare)
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Effect of tyre wear on noise emission and rolling resistance
- 2009
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Ingår i: Noise Control Engineering. International Congress And Exhibition.. - : Curran Associates, Inc.. - 9781605609898 ; , s. 5241-5260
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Konferensbidrag (refereegranskat)abstract
- During a lifecycle a tyre undergoes degradations due to mechanical wear and chemical ageing which affect not only durability and safety but also tyre/road noise emission and rolling resistance. This paper presents a study with the purpose to study how much tyre/road noise and rolling resistance change when car tyres are worn down from the original 8 mm tread depth to 2 mm, and when chemical ageing of the tyre rubber is simulated by exposure to heat. Six car tyres of different types were selected for the study which were worn on a wear machine in steps of 2 mm tread depth. Before, between and after these wear sessions tyre/road noise and rolling resistance were measured on two drum facilities with different surface textures, including replicas of ISO surfaces. Additionally, coast-by and CPX measurements were made on outdoor ISO test tracks. The results show that the wear and age effect was low on ISO surfaces but dramatic (noise increased with wear) on the rough-textured surface and high but opposite on an extremely smooth surface.
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| 5. |
- Sandberg, Ulf, 1946-, et al.
(författare)
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Rolling resistance : basic information and state-of-the-art on measurement methods. Final version
- 2011
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- MIRIAM has established a sub-project (SP), designated SP 1, to deal with measurement methods for rolling resistance and related issues. This subject forms the most fundamental basis for the MIRIAM ambition to consider rolling resistance in pavement management or other types of infrastructure systems. Without robust measurement methods and equipment that can use them there will be no reliable data as input to such systems and the end result will be most uncertain, if useful at all.In order to develop and study measurement methods, there must be a basic understanding of the influencing parameters as well as what energy losses that should be included in the concept of rolling resistance. These issues are, therefore, important parts of the work in SP 1.This report is intended to provide basic knowledge about the part of the tyre and road interaction which relates to rolling resistance; for example, the mechanisms that create rolling resistance, and the influence on rolling resistance of various tyre and road parameters. The intention is also to suggest a definition of rolling resistance for the purposes of this project, as well as to provide some detailed state-of-the-art knowledge about the measurement methods and equipment that are useful for collecting rolling resistance data.
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| 6. |
- Sandberg, Ulf, et al.
(författare)
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The influence of tyre wear and ageing on tyre/road noise emission and rolling resistance
- 2008
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Most published tyre/road noise tests have been made on new or nearly new tyres. Tyre testing with reference to the EU Directive 2001/43/EC or the ECE Regulation 117 is always made on brand new, albeit run-in, tyres. Reference tyres for road surface testing must be in new or almost new condition. Yet, substantially worn tyres are more frequent on our roads and streets than new or almost new tyres. Only a few investigations have addressed the basic problem of how and to what extent tyre wear influences tyre/road noise. It is quite obvious that a tyre in new condition is different from a tyre in old, worn condition. Although the carcass may be essentially unchanged, the tread pattern will look and perform very differently in new and old condition, and the rubber material has changed its properties (e.g. hardness) with tyre storage and due to exposure to sunshine and wear, etc. The primary aim of the experiments was to study how much tyre wear and ageing influence noise emission of tyres running on smooth and rough surfaces. The secondary aim was to study how much tyre wear and ageing affect rolling resistance of tyres run on smooth and on rough surfaces.Alternative URL: http://www.fehrl.org/index.php?m=32&mode=download&id_file=6134
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