The Experts below are selected from a list of 9093 Experts worldwide ranked by ideXlab platform
In-ju Kim - One of the best experts on this subject based on the ideXlab platform.
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Investigation of Floor Surface Finishes for Optimal Slip Resistance Performance
Safety and health at work, 2017Co-Authors: In-ju KimAbstract:Background Increasing the Slip Resistance of floor surfaces would be desirable, but there is a lack of evidence on whether traction properties are linearly correlated with the topographic features of the floor surfaces or what scales of surface roughness are required to effectively control the Slipperiness of floors.
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Investigation and Interpretation of Flooring Wear Development for Pedestrian Slip Resistance Assessments
Tribology Transactions, 2017Co-Authors: In-ju KimAbstract:ABSTRACTSurface conditions of pedestrian footpaths and walkways continually change throughout their services. Many causes may contribute to the variation of surface qualities, but a decline of Slip Resistance functioning is a critical problem for the pedestrian safety of walkway surfaces. Despite the importance of flooring wear issue, their ensured operations and influences on Slip Resistance performance against pedestrian falls have not been systematically investigated. The present study aims to understand wear progress of floor surfaces, investigate the mechanism of surface changes due to wear advances, and recognize their impacts on Slip Resistance operations. To measure traction properties and characterize wear behaviors of walkway surfaces, Slip Resistance tests were operated among three different types of floor specimens with a similar range of topographic characteristics and two dissimilar shoes. Wear formations and developments of the floor specimens were comprehensively assessed by a combination ...
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A study on wear development of floor surfaces: Impact on pedestrian walkway Slip-Resistance performance
Tribology International, 2016Co-Authors: In-ju KimAbstract:Abstract This study aimed to understand wear development of floor surfaces and uncover its impacts on pedestrian walkway Slip-Resistance performance. To characterize wear behaviors of floor surfaces, dynamic friction tests were conducted between specifically prepared four metal specimens and three shoes. Wear behaviors of the metal specimens were quantitatively and qualitatively investigated by surface analyses and microscopic observations. The test results showed that changes of the floor surface finishes were caused by direct- and indirect-wear modes and significantly affected Slip-Resistance functioning. This study suggested an integrated wear concept to recognize wear mechanisms of the floor surface and identify flooring wear impacts on Slip-Resistance functioning. This study may have potential applications for design improvements of floors/walkways to prevent Slip and fall incidents.
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Research on Slip Resistance measurements--a new challenge.
Industrial Health, 2008Co-Authors: In-ju Kim, Hisao NagataAbstract:Slips, trips and falls are one of the most common causes of injuries and fatalities in the general community and industry. The control of such incidents involves a complex array of factors including the characteristics of each individual's footwear and gait dynamics, walking and working surfaces, and environmental conditions. Notwithstanding this complexity, Slip Resistance properties have been widely measured as a form of coefficient of friction (COF) index at the sliding interface between the shoes and floors. Since the COF measurements were commonly adopted to evaluate Slip potentials, it has been found that there were controversies in the interpretation of COF measurement results. This study, therefore, was principally focused on broadening the knowledge base and developing new ideas on which improvements in the validity and reliability of Slip Resistance measurements might be made. To achieve this goal, crucial problems on the current concept of Slip Resistance measurement were extensively analysed by a tribological point of view where principle understanding of the shoe-floor friction and wear phenomena could be made. Based on this approach, new theoretical models were suggested.
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Development of a new analyzing model for quantifying pedestrian Slip Resistance characteristics: Part I–Basic concepts and theories
International Journal of Industrial Ergonomics, 2004Co-Authors: In-ju KimAbstract:Abstract This paper suggests new theoretical foundations for characterizing friction and wear phenomena observed at the sliding interfaces between the footwear and underfoot surfaces. Among many factors, geometrical arguments (surface roughness and asperity interlocking) are mainly explored to identify tribological features of the shoes and floors and analyze their effects on Slip Resistance properties. Because surface topography of the shoes and floors could be largely changed throughout the course of sliding friction, this may affect the overall friction behavior and be one of the most important factors to influence the Slip Resistance properties. As a result, both the surfaces that may have initially statistically uniform topography could exhibit non-uniform surfaces. Based on these hypotheses, a new tribology model is proposed to characterize friction and wear behaviors and quantitatively measure the geometrical interactions between the shoes and floors during the Slip Resistance assessments. To quantify the geometric modifications between the two wear surfaces, a new concept, comparative surface harmony (CSH), is developed and a mating index, comparative surface harmony index (CSHI), is formulated to characterize the surface interlocking and wear evolution of the shearing interfaces formed at contact areas between the shoes and floors. A companion paper [Development of a new analyzing model for quantifying pedestrian Slip Resistance characteristics: Part II—Experimental investigations] presents a study of the model application in a set of Slip Resistance tests, surface profile analyses and microscopic investigations to verify the outcomes between the theoretical and experimental results. Relevance to industry This paper suggests a sound theoretical foundation for the understanding of frictional and wear mechanisms between the shoe and floor surfaces. On a broader scale, this paper may also assist the improvement of design aspects of both the footwear and floor surfaces that consequently lead to reduction in the Slip hazards.
Anita Terjék - One of the best experts on this subject based on the ideXlab platform.
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Ceramic Floor Slipperiness Classification – A new approach for assessing Slip Resistance of ceramic tiles
Construction and Building Materials, 2018Co-Authors: Anita Terjék, Annamária DudásAbstract:Abstract Regarding the application of ceramic tiles there is a great importance of defining and measuring Slip Resistance of floor coverings. The objective of this study was to determine Slipperiness of ceramic tiles and to make a comparative analysis on the different measurement methods. Laboratory Slip Resistance tests were conducted on 28 different ceramic tiles by three different methods providing the average angle of inclination, the pendulum test value and the coefficient of friction. By comparing the obtained test results, relationship between individual methods was determined. Based on this information Ceramic Floor Slipperiness Classification (CFSC), a new system was prepared concerning the selection and application of tiles.
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Multiple Aspects of Comparing Surface Properties of Ceramic Tiles Regarding Slip Resistance
Applied Mechanics and Materials, 2016Co-Authors: Anita TerjékAbstract:The objective of this study was to determine the affecting factors that can possibly change Slipperiness of flooring. Laboratory Slip Resistance tests were conducted under different surface conditions. Two different methods were used to measure 6 different ceramic tiles. This article has its focus mainly on the required security and its quantification during the service life of floor coverings. Slip Resistance of ceramic tiling can change with use. It is worth to investigate the effect of cleaning agents on Slipperiness of floors, because it could be more dangerous when the cleaning process is in progress, so the surface is still in wet state or partly covered by liquid. This paper makes a comparative analysis on the different measurement methods and sliders that rub against the surface. In case of public and residential buildings Slip Resistance and surface roughness associated with cleanability, all have influence on safety in use and durability. The results showed that the perceived surface roughness parameters could be used as indicator of Slipperiness and supplement objective measurement of this performance.
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Analysis of Surface Properties Determining Slip Resistance of Ceramic Tiles
Periodica Polytechnica-civil Engineering, 2015Co-Authors: Anita Terjék, Zsuzsanna JózsaAbstract:Slip Resistance tests of pavements form an important part of Construction Products Regulation (CPR) in the EU. Measuring Slipperiness is a complex problem. This property is often incomplete or inaccurate. The paper presents new test results of glazed and unglazed ceramic tiles with natural, polished and textured surfaces tested in dry, wet and oily conditions. In the research 3 dierent methods of Slip Resistance tests were used providing the average angle of inclination, skid-Resistance value and coecient of friction. The results show that surface roughness was also a significant factor aecting Slipperiness. It is necessary to examine the structure of materials that is why measuring cleanability, as an important contributor to Slip Resistance and surface roughness, is fundamental in this research. Based on the experiments, it was found out that multiple cycles of sodium hypochlorite treatment could modify the surface of ceramic tiles.
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Analysis of Surface Properties Determining Slip Resistance of Ceramic Tiles
Periodica Polytechnica-civil Engineering, 2015Co-Authors: Anita Terjék, Zsuzsanna JózsaAbstract:Slip Resistance tests of pavements form an important part of Construction Products Regulation (CPR) in the EU. Measuring Slipperiness is a complex problem. This property is often incomplete or inaccurate. The paper presents new test results of glazed and unglazed ceramic tiles with natural, polished and textured surfaces tested in dry, wet and oily conditions. In the research 3 dierent methods of Slip Resistance tests were used providing the average angle of inclination, skid-Resistance value and coecient of friction. The results show that surface roughness was also a significant factor aecting Slipperiness. It is necessary to examine the structure of materials that is why measuring cleanability, as an important contributor to Slip Resistance and surface roughness, is fundamental in this research. Based on the experiments, it was found out that multiple cycles of sodium hypochlorite treatment could modify the surface of ceramic tiles.
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Slipping properties of ceramic tiles / Quantification of Slip Resistance
IOP Conference Series: Materials Science and Engineering, 2013Co-Authors: Anita TerjékAbstract:Regarding the research and application of ceramic tiles there is a great importance of defining precisely the interaction and friction between surfaces. Measuring Slip Resistance of floor coverings is a complex problem; Slipperiness is always interpreted relatively. In the lack of a consistent and clear EU standard, it is practical to use more method in combination. It is necessary to examine the structure of materials in order to get adequate correlation. That is why measuring techniques of surface roughness, an important contributor to Slip Resistance and cleaning, is fundamental in the research. By comparing the obtained test results, relationship between individual methods of analysis and values may be determined and based on these information recommendations shall be prepared concerning the selection and application of tiles.
D. P. Manning - One of the best experts on this subject based on the ideXlab platform.
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Surface roughness of footwear soling materials : Relevance to Slip Resistance
Journal of Testing and Evaluation, 1996Co-Authors: Fj Rowland, C Jones, D. P. ManningAbstract:The Slip Resistance of commercial safety boot and experimental footwear solings has been studied over a period of 15 years. Shoes, with experimental solings, were worn in a factory, and the coefficient of friction (CoF) measured at intervals, using a walking traction test. These measurements have shown that a microcellular polyurethane, AP66033 (formerly T66/103) gives the greatest Slip Resistance of any soling material on wet or oily factory floors and laboratory test surfaces. This performance is attributed to the statistically significant relationship between CoF and mean peak to trough roughness (Rtm). The surface structure of soling materials was examined using Scanning Electron Microscopy, and images compared with Rtm measurements. There is now sufficient experimental evidence to confirm that surface roughness is one of the determinants of CoF on lubricated floors. The wear characteristics of the floor/sole combination must be considered: some soling materials may become polished on certain floors. However, AP66033 cannot be polished.
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The superior Slip-Resistance of footwear soling compound T66/103
Safety Science, 1994Co-Authors: D. P. Manning, Craig JonesAbstract:Research over a period of fifteen years consistently revealed that a microcellular polyurethane soling known as T66/103 (T66) is the most Slip-resistant soling for use on oily floor surfaces. Many experiments have indicated that T66 is also the most Slip-resistant soling available for water contaminated (wet) floors. The walking traction test and a new mobile version of the rig were used in eight new experiments designed to obtain further evidence for the superior Slip-Resistance of T66 especially on wet floors. The surface roughness of T66 after abrasion is believed to be an important contributor to Slip-Resistance and this hypothesis led to the examination of some microcellular rubbers (MR) which also become rough when abraded. The T66 soling was compared with five MR samples, a dense Polyurethane (PU) and two dense rubbers and in all the experiments the mean coefficient of friction (cof) of the T66 soling was ranked higher than all other solings on surfaces lubricated with water, or by water and a wetting agent (p less than 0.001) and the authors believe that the trend in footwear design towards an outer layer of dense PU is retrograde. It is concluded that T66 is the safest commercial soling found for both oily and wet floors and that the more general use of this soling would reduce the enormous number of injuries caused by Slipping accidents. Compound T66 should be used as a standard for the assessment of other solings.
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the superior Slip Resistance of footwear soling compound t66 103
Safety Science, 1994Co-Authors: D. P. Manning, Craig JonesAbstract:Research over a period of fifteen years consistently revealed that a microcellular polyurethane soling known as T66/103 (T66) is the most Slip-resistant soling for use on oily floor surfaces. Many experiments have indicated that T66 is also the most Slip-resistant soling available for water contaminated (wet) floors. The walking traction test and a new mobile version of the rig were used in eight new experiments designed to obtain further evidence for the superior Slip-Resistance of T66 especially on wet floors. The surface roughness of T66 after abrasion is believed to be an important contributor to Slip-Resistance and this hypothesis led to the examination of some microcellular rubbers (MR) which also become rough when abraded. The T66 soling was compared with five MR samples, a dense Polyurethane (PU) and two dense rubbers and in all the experiments the mean coefficient of friction (cof) of the T66 soling was ranked higher than all other solings on surfaces lubricated with water, or by water and a wetting agent (p less than 0.001) and the authors believe that the trend in footwear design towards an outer layer of dense PU is retrograde. It is concluded that T66 is the safest commercial soling found for both oily and wet floors and that the more general use of this soling would reduce the enormous number of injuries caused by Slipping accidents. Compound T66 should be used as a standard for the assessment of other solings.
Craig Jones - One of the best experts on this subject based on the ideXlab platform.
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The superior Slip-Resistance of footwear soling compound T66/103
Safety Science, 1994Co-Authors: D. P. Manning, Craig JonesAbstract:Research over a period of fifteen years consistently revealed that a microcellular polyurethane soling known as T66/103 (T66) is the most Slip-resistant soling for use on oily floor surfaces. Many experiments have indicated that T66 is also the most Slip-resistant soling available for water contaminated (wet) floors. The walking traction test and a new mobile version of the rig were used in eight new experiments designed to obtain further evidence for the superior Slip-Resistance of T66 especially on wet floors. The surface roughness of T66 after abrasion is believed to be an important contributor to Slip-Resistance and this hypothesis led to the examination of some microcellular rubbers (MR) which also become rough when abraded. The T66 soling was compared with five MR samples, a dense Polyurethane (PU) and two dense rubbers and in all the experiments the mean coefficient of friction (cof) of the T66 soling was ranked higher than all other solings on surfaces lubricated with water, or by water and a wetting agent (p less than 0.001) and the authors believe that the trend in footwear design towards an outer layer of dense PU is retrograde. It is concluded that T66 is the safest commercial soling found for both oily and wet floors and that the more general use of this soling would reduce the enormous number of injuries caused by Slipping accidents. Compound T66 should be used as a standard for the assessment of other solings.
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the superior Slip Resistance of footwear soling compound t66 103
Safety Science, 1994Co-Authors: D. P. Manning, Craig JonesAbstract:Research over a period of fifteen years consistently revealed that a microcellular polyurethane soling known as T66/103 (T66) is the most Slip-resistant soling for use on oily floor surfaces. Many experiments have indicated that T66 is also the most Slip-resistant soling available for water contaminated (wet) floors. The walking traction test and a new mobile version of the rig were used in eight new experiments designed to obtain further evidence for the superior Slip-Resistance of T66 especially on wet floors. The surface roughness of T66 after abrasion is believed to be an important contributor to Slip-Resistance and this hypothesis led to the examination of some microcellular rubbers (MR) which also become rough when abraded. The T66 soling was compared with five MR samples, a dense Polyurethane (PU) and two dense rubbers and in all the experiments the mean coefficient of friction (cof) of the T66 soling was ranked higher than all other solings on surfaces lubricated with water, or by water and a wetting agent (p less than 0.001) and the authors believe that the trend in footwear design towards an outer layer of dense PU is retrograde. It is concluded that T66 is the safest commercial soling found for both oily and wet floors and that the more general use of this soling would reduce the enormous number of injuries caused by Slipping accidents. Compound T66 should be used as a standard for the assessment of other solings.
M J Carre - One of the best experts on this subject based on the ideXlab platform.
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development of a new shoe floor Slip Resistance test rig
Tribology International, 2020Co-Authors: S.r. Lewis, K. Hallas, B. Keen, G. Hunwin, R. Shaw, M J CarreAbstract:Abstract A critical appraisal of the Shoe Slip Tester, SST, is discussed the paper. The SST is designed to be a portable and practical alternative to the Ramp tester which is currently considered the Gold Standard in Slip Resistance testing. Tests identical safety shoe samples were carried out using the SST and RAMP in parallel and the data yielded compared. Data showed that the Shoe Slip Tester yielded higher coefficients of friction. Controlling the data for force applied at shoe impact gave good correlation between the two devices. Recommendations are made to the design of the SST from data in this paper. Recommendations will improve correlation between the two devices. The SST can be said to be a suitable alternative.