Academic literature on the topic 'Too Wear'

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Journal articles on the topic "Too Wear"

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Goldman, Howard H. "Today I Wear a Blue Hat, Too." Psychiatric Services 64, no. 12 (2013): 1183. http://dx.doi.org/10.1176/appi.ps.640124.

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Jiang, Ya Nan, Wei Hua Zhang, and Dong Li Song. "Study on the Law of Wheel Wear Based on Copula." Applied Mechanics and Materials 427-429 (September 2013): 246–51. http://dx.doi.org/10.4028/www.scientific.net/amm.427-429.246.

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The law of wheel wear is the basis for making turning repair cycle, and is one of the most important guarantees for the safe and stable running of train. A statistical analysis of individual wheel wear parameter was carried out based on wheel profile data of CRH2. The change law of individual wear parameter with mileage showed that wear process of wheel could be divided into two periods: the run-in period and the stable wear period. The paper has realized to research on the correlation between nominal wheel diameter abrasion value and wheel flange thickness variation based on Copula, too. Frank Copula was selected to describe correlation of the two wear parameters, the correlation index (α) of Frank Copula was estimated and the joint distribution function considering dependence was given. The value of α indicated that there was a weak positive correlation between the two wears, which can be ignored for calculating the accumulative failure rate of wheel wear. So the two wear parameters can be regarded as independent random variables during failure analysis of wheel wear.
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Wu, Na, and Jing Zeng. "Parameter Studies for Wheel Wear Using a Flexible Wheelset." Advanced Materials Research 712-715 (June 2013): 1230–34. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.1230.

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In order to reduce wheel profile wear of high-speed train and extend the service life of wheels, a high-speed vehicle multi-body dynamic model and wheel profile wear model are established, in which the wheelset is considered as flexible. The influence of wheel profile, track gauge, and rail cant is extensively studied. The simulation results show that the type XP55 wheel has smallest cumulative wear depth, and type LM wheel has largest wear depth. It is known that the equivalent conicity of the wheel should not be too large or too small. The track gauge with 1435-1438mm and rail cant with 1:35-1:40 can have better wheel wear performance.
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Liu, Sheng Rong, Jian Li Wang, Hong Feng Wang, Xiao Le Ge, and Jia Fei Pu. "Analysis of Friction and Wear Properties of 7075 Aluminum Alloy Modified by FSP." Key Engineering Materials 866 (October 2020): 135–42. http://dx.doi.org/10.4028/www.scientific.net/kem.866.135.

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In this paper, the wear resistance of the different parameter (the tool rotation speed and feed speed) modified layer of the hot rolled 7075 aluminum alloy by the friction stir processing (FSP) were studied. The wear mechanism was explored by analyzing the surface morphologies of the modified layer after wear. The results showed that the wear resistance of 7075 aluminum alloy modified by FSP was superior to that of the base metal at different temperatures. The comprehensive wear resistance was better when the tool rotation speed and the feed speed were 500 rpm and 60 mm/min under different temperatures. Furthermore, the FSP parameters had a significant influence on the wear resistance of the modified layer. When the FSP parameters were too high or too low, the wear resistance would be reduced and the adhesive wear would appear. In addition, the modified layers obtained by different parameters received poor wear resistance when the temperature at high values.
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Goralka, Chris, Jake Bridges, Muhammad Jahan, et al. "Friction and Wear Reduction of Tungsten Carbide and Titanium Alloy Contacts via Graphene Nanolubricant." Lubricants 10, no. 10 (2022): 272. http://dx.doi.org/10.3390/lubricants10100272.

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The tribological behavior of graphene as an additive in a water-based nanofluid lubricant was investigated using pin-on-disk tests on titanium alloy (Ti-6Al-4V) and cemented tungsten carbide (WC–Co) contacts. The effect of graphene concentration and surface roughness was investigated. A non-monotonic trend of friction and wear with increasing concentration was observed. An optimal graphene concentration of 0.10 wt.% was found to provide the lowest friction and wear at different surface roughnesses, with the friction, specific wear rate of the sample surface, and tip wear reduced by 29%, 37%, and 95%, respectively. The friction reduction and anti-wear performance of the nanofluids increased as the sample surface roughness increased. The non-monotonic friction and wear trends can be explained by the agglomeration of graphene around the contact zone, where too small a graphene concentration does not provide enough lubrication and too high a concentration prevents sliding owing to a large amount of agglomeration particles at the contact. The superior friction and wear performance of the graphene nanolubricants demonstrate its potential in minimum quantity lubrication (MQL) and other applications.
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Milan, Brožek. "Abrasive wear resistance of selected woods." Research in Agricultural Engineering 63, No. 2 (2017): 91–97. http://dx.doi.org/10.17221/74/2015-rae.

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In this contribution, the results of the wear resistance study of 10 sorts of wood (apple, aspen, beech, hornbeam, horse-chestnut, London plane, mahogany, silver fir, sour cherry and sweet cherry) are published. The laboratory tests were carried out using the pin-on-disk machine when the abrasive clothes of three different grits (240, 120 and 60) were used. The wear intensity was assessed by the volume, weight and length losses of the tested samples. From the results of the carried out tests it follows that the wear resistance of different woods is different. It was proved that the wear resistance of different woods depends on the abrasive particles size, too. Also the technical-economical evaluation was part of the carried out tests. It was univocally proved that at the intensive abrasive wear using the abrasive cloth the best results were shown by hard woods, e.g. apple, beech or mahogany. Soft woods, e.g. horse-chestnut, silver fir or sweet cherry, are cheap, but their wear is bigger compared to hard woods.
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Wang, Yaohui, Yingkai Feng, Xiaohu Sun, Shaoquan Liu, and Guoqiang Chen. "Effect of Process Parameters on the Microstructure and Wear Resistance of Fe3Al/Cr3C2 Composites." Coatings 14, no. 4 (2024): 384. http://dx.doi.org/10.3390/coatings14040384.

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In this paper, a brake cylinder coating comprising a composite material of an Fe3Al and Cr3C2 mixed powder was prepared by adding laser cladding onto carbon structural steel. We studied the influence of process parameters on the microstructure and tribological properties of the cladding materials using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and 3D white light interferometer and wear tests. The influence of different processes on the morphology of the carbide strengthening phase was found to be relatively small with a Cr3C2 content of 15 wt.%. The carbides mainly exhibited a network structure in each group of cladding layers. The area of the network strengthening phase varied under different processes. Of the cladding layers formed with different processes, the scanning speed of the 0.003 m/s cladding layer had the lowest wear rate. When the laser power was too low or the powder feed rate was too high, unmelted Cr3C2 particles could be found in the cladding layer. During the wear process, the particles peeled off, causing severe abrasive wear. When the powder feeding rate was too low, more materials in the base material entered the cladding layer. This made the composition of the cladding layer similar to that of the grinding material, resulting in severe adhesive wear.
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Hrabě, P., R. Chotěborský, and R. Medlín. "Influence of overlay layers on the abrasive wear." Research in Agricultural Engineering 52, No. 3 (2012): 115–22. http://dx.doi.org/10.17221/4887-rae.

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A problem of machine parts wear decrease and in this way of the economical effectiveness of rapid wearable parts interferes with majority of manufacturing processes. Service life and operating reliability of a great number of machine parts is largely influenced by friction and wear, which take a significant part in the power and material losses. Wear affects significantly the maintenance, repair and renewal costs of machine parts, too. Today we can use a row of overlay materials. They differ above all by chemical composition, which determinates the conditions of use. Next conditions are the solidification of the welded-on material and the diffusion ability of main alloying elements, which determine the resultant structure of an overlay. The paper intents on multilayer overlays problem and on the number of overlay layers influence on abrasive wear.
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Yan, Jingang, Zhenming Yang, Limin Zhang, and Jianxin Wang. "Research on the Microstructure and Properties of Arc-Sprayed Austenitic Stainless Steel and Nickel-Based Alloy Composite Coatings with Different Spraying Distances." Crystals 15, no. 2 (2025): 142. https://doi.org/10.3390/cryst15020142.

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1Cr18Ni9Ti and Monel composite metal coatings with five different spraying distances were prepared by arc spraying technology. The density, hardness, friction, and wear properties and acid corrosion rate of the coatings with different spraying distances were studied by X-ray diffraction, scanning electron microscopy, Rockwell hardness test, and friction and wear test. Research shows that the spraying distance has a significant effect on the density, hardness, porosity, friction, and wear properties and corrosion rate of the coating. When the spraying distance is 250 mm, the coating has the maximum density and hardness, the minimum porosity and corrosion rate, and the minimum friction coefficient and wear volume. Cu3.8ni and cr0.19fe0.7ni0.11 compounds in the coating have significant effects on the friction, wear, and hardness of the coating. The results show that too-high or too-low spraying distance will lead to pores and large particle agglomeration in the coating, which will affect the surface physical properties of the coating.
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Xu, Liu Jie, Shi Zhong Wei, Ying Ping Ji, Guo Shang Zhang, Ji Wen Li, and Rui Long. "Effect of Carbon on Frictional Wear Behaviours of High Vanadium High Speed Steel under Dry Sliding Condition." Materials Science Forum 654-656 (June 2010): 370–73. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.370.

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The high vanadium high-speed steel (HVHSS) with about 9wt% vanadium and different carbon contents were prepared using casting process. The effects of carbon on wear properties of HVHSS were studied using pin-on-ring tester, and the failure behaviors were investigated via SEM. Results show the optimal wear resistance is obtained when HVHSS possesses moderate carbon content (2.58wt.%). The cause is that the matrix microstructure of moderate carbon HVHSS is mainly low-carbon lath martensite with good toughness and high hardness, and it can effectively resist micro-cutting and figure wear at the same time, so the role of high-hardness vanadium carbides (VC) can be played enough because of the strong support of matrix. If carbon content is too low, the wear failure of HVHSS is mainly caused by severe micro-cutting and adhesive wear on contact surface because the matrix microstructure of high speed steel is ferrite with very low hardness, which leads to poor wear resistance. While, the matrix microstructure is mainly composed of high carbon martensite with poor toughness when carbon content is too high, therefore, it possesses very poor resistance to cycle fatigue and thermal fatigue, resulting in decrease of wear resistance.
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Dissertations / Theses on the topic "Too Wear"

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Selbee, Amber. "Activated charcoal; too abrasive?" The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1619127299234152.

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Odelros, Stina. "Tool wear in titanium machining." Thesis, Uppsala universitet, Institutionen för kemi - Ångström, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-176944.

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The present work was performed at AB Sandvik Coromant as a part in improving the knowledge and understanding about wear of uncoated WC/Co cutting tools during turning of titanium alloy Ti-6Al-4V. When machining titanium alloys, or any other material, wear of the cutting tools has a huge impact on the ability to shape the material as well as the manufacturing cost of the finished product. Due to the low thermal conductivity of titanium, high cutting temperatures will occur in narrow regions near the cutting edge during machining. This will result in high reaction and diffusion rates, resulting in high cutting tool wear rates. To be able to improve titanium machining, better knowledge and understanding about wear during these tough conditions are needed. Wear tests were performed during orthogonal turning of titanium alloy and the cutting tool inserts were analysed by SEM, EDS and optical imaging in Alicona InfiniteFocus. Simulations in AdvantEdge provided calculated values for cutting temperatures, cutting forces and contact stresses for the same conditions as used during wear tests. It was found that turning titanium alloy with WC/Co cutting tools at cutting speeds 30-60 m/min causes chamfering of the cutting tool edge and adhesion of a build-up layer (BUL) of workpiece material on top of the rake face wear land. The wear rate for these low cutting speeds was found to be almost unchanging during cutting times up to 3 minutes. During cutting speeds of 90-115 m/min, crater wear was found to be the dominating wear mechanism and the wear rate was found to have a linear dependence of cutting speed. An Arrhenius-type temperature dependent wear mechanism was found for high cutting speeds, between 90 and 115 m/min.
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Mussa, Abdulbaset. "Wear characterization and wear mapping of a coated cutting tool : Development of cutting tool test fixture and wear testing." Thesis, Karlstads universitet, Science, Mathematics and Engineering Education Research (SMEER), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-37790.

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Wear mechanisms of the cutting tools are well investigated worldwide. Usually researchers use the cutting process itself, turning by single point cutting, as their investigation method, which includes turning a metal cylinder with a pre-selected work-material and predetermined cutting conditions. Thereafter the tool worn surface is examined by scanning electron microscopy in order to characterize the tool wear mechanisms and tool failure. However, this may be the most appropriate way to investigate the wear mechanisms which occur during machining since it simulates the real operation. Metal cutting involves extreme conditions such as high temperature and high-pressure and the different condition results in different wear modes on the insert’s surface. The wear modes are overlapping and the transition boarder between them are not sharp making it difficult to obtain a detailed information of wear mechanisms. Because of these reasons many researchers try to refine the machining to a single condition e.g; high pressure, at the laboratory level in order to characterize the wear mechanisms and to get a more detailed information. In this thesis the wear tests of the cutting tool are performed by using a slider-on-flat-surface (SOFS) wear tester. SOFS involves a normal load, which applies to the sample and a tangential force that enables the sliding of the sample against a counterface. To enable conducting the wear tests in SOFS a newly design of tool holder was prepared. The wear tests were performed at different contact conditions and the stainless steel EN 1.4310 was used as the counterface material. After the tools were tested, the worn surface of the tool was examined by optical light microscopy and scanning electron microscopy in order to identify the wear rate and wear mechanisms. At low load the dominating wear mechanism was adhesive wear. The adhesive wear was induced by material pick-up during sliding i.e. material from the counterface was transferred to the insert’s surface. Further sliding results in delamination of the insert surface and removal of a part of the coatings material. At high load the dominating wear mechanism was a combination of severe adhesive wear and fracture of the coating material. The fracture of the coating material occurred because of overloading. Coating defects promote crack formation under high load and these cracks propagate through the coating during sliding movement and result in microchipping of the coating material. This procedure does not simulate the metal cutting but it still gives an understanding of the behavior of the coating material when it is exposed to a high mechanical stress.
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Hosepyan, Yetvart. "Tool wear monitoring in face milling." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/29973.

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The purpose of this thesis is to investigate tool wear monitoring using Fourier Series simulation of steady state cutting forces. These simulations show that mean and fundamental values are all that is required to accurately predict immersion and tool wear (high frequency terms are ignored). It is found that the ratio of the magnitude of the fundamental values of force over the quasi-mean resultant force are insensitive to wear, while the same ratio is found to change markedly with immersion. Due to the nature of wear and different cutting conditions, two different wear identification methods are proposed. The first type of wear is chipping of the primary edge; the ratio of quasi-mean resultant force over mean torque gives the necessary indication without being affected by normal wear. The second type of wear studied is the normal wear band, where the axial force, F[formula omitted], (which was modelled using equivalent chip thickness, h[formula omitted], and equivalent approach angle,[formula omitted]) is found to be useful in the identification of this type of wear. The mean value of F[formula omitted] over the mean value of torque gives information about the state of normal wear while being insensitive to chipping. Work on an insitu sensor is also reported. Preliminary investigation shows that a deposit comprising a hybrid resistor on the flank face of a throw-away insert has the potential to monitor wear due to the permanent increase in resistance of the deposit as cutting proceeds. A U.S. patent has been obtained for this idea.<br>Applied Science, Faculty of<br>Mechanical Engineering, Department of<br>Graduate
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Lister, Paul Martyn. "On-line monitoring of tool wear." Thesis, University of Manchester, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296379.

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Wilcox, Anthony John. "The condition monitoring of press-working systems using ultrasonic Lamb waves." Thesis, Birmingham City University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386941.

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Yeomans, J. A. "Ceramic tool materials : structure and properties relevant to wear." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233360.

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This thesis is concerned with the microstructures and wear characteristics of eight ceramic tool materials which have been, or are currently, commercially available as indexable inserts for lathe tools. Two of the materials are alumina-based and the other six are derived from silicon nitride. The opening chapters of the thesis outline the essential features of metal cutting, the properties required of a good tool material, the development of ceramic tools and possible wear behaviour as discussed in the literature. Subsequent chapters describe the experimental procedures adopted in this work and both present and discuss the results obtained. The eight ceramics have been microstructurally characterised by the use of X-ray diffractometry, scanning electron microscopy and transmission electron microscopy. Machining tests have been performed using five common workpiece materials, spanning a range of nickel and iron contents: mild steel, stainless steel, two nickel-based superalloys and commercial purity nickel. The two alumina-based materials were found to wear in a different, less severe manner to the silicon nitride-based tools. The mechanical response to surface contacts was established using identation techniques to give hardness (as a function of contact size and temperature) and fracture toughness (as a function of temperature) to test the correlation between these properties and wear behaviour, but this proved to be unfruitful. Since other classes of tools can be subject to dissolution/diffusion wear and little is known about the compatability of these ceramics with molten metals, a second type of investigation was instigated. The involved immersing pieces of ceramic in samples of molten workpiece materials, followed by cooling, sectioning and examining in the scanning electron microscope. Vast differences in the behaviour of the materials were observed and results from these tests correlated well with machining data, indicating the importance of high temperature stability with respect to the hot workpiece. Drawing on the experimental observations made during the project, the thesis concludes with suggestions for improving and optimising ceramic tool materials for turning purposes.
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Cerniway, Matthew Allen. "Elliptical Diamond Milling: Kinematics, Force and Tool Wear." NCSU, 2002. http://www.lib.ncsu.edu/theses/available/etd-20020104-082326.

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<p>Machining with diamond tools, whether turning or milling has proven itself as themanufacturing process that produces the highest quality surface finish, with the leastamount of form error in the minimum amount of time. However, due to tool wear and theamount of force generated during conventional machining, diamond tools cannot be usedon carbon containing materials such as steel and brittle materials such as silicates. In anattempt to by-pass the material limitations of diamond machining, a new machiningprocess called vibration assisted machining (VAM) has been developed. VAM involvesoscillating the diamond tool, bringing it into and out of contact with the material in rapidsuccession. VAM can either be 1-dimentional (1D), oscillation in a single direction, or 2-dimensional (2D), a summation of two independent tools motions. Currently, researchefforts are focused on 2D vibration machining, 2D tool motion haven been shown to besuperior to 1D tool motion. Over the past 10 years, 2D VAM with diamond tools hasbeen demonstrated to reduce the amount of machining force and increase tool life whenmachining carbon-containing materials over that of conventional machining processes.However the mechanisms of this improvement have yet to be discovered. This researcheffort is focus on: 1) discovering the fundamental mechanical principals behind theimprovement, force reduction and tool wear, 2) developing a model that predicts thecutting forces and tool contact times, 3) establishes guidelines for the use of vibrationassisted machining and 4) developing an industrial grade 2D VAM servo. The reductionsin tool wear and machining forces are related to the path geometry of the diamond tooland the speed and the depth at which it engages the workpiece. A model has beendeveloped and experimentally verified for 2D VAM which predicts the machining forcesand workpiece / tool contact time if the material properties are known. Along with themodel, a set of charts has been developed for both 1D and 2D VAM that relate the keymachining variables to one another. Lastly, a robust 2D VAM diamond tool servo hasbeen designed.<P>
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Jisheng, E. "Sliding wear of materials for machine tool elements." Thesis, Brunel University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295201.

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Shaikh, Qadeer Ahmed. "Wear studies of sintered high speed tool steels." Thesis, Loughborough University, 1988. https://dspace.lboro.ac.uk/2134/10826.

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The wear behaviour of wear resistant alloy steels has been studied using a crossed-cylinder wear test. The wear results have been related to current theories of friction and wear established in the published literature. Wear tests have been carried out on a wide range of alloy steels sintered in vacuum to full density; in particular the following have been studied in depth: M2, M42, T15, ASP30, D2 and EN24. These alloy steels were made by the process of powder metallurgy where alloy steel powders of the co=ect =mposi tion are pressed and sintered into wear resistant engineering ccmponents . A wear test method involving a crossed cylinder abrasion test has been developed to measure the wear rates of materials with hardnesses ranging from 100-1000 VHN. The test variables studied were: time (or distance travelled), load,abrasive grit size, sliding speed and hardness of test specimens ...
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Books on the topic "Too Wear"

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LaRoche, Loretta. Juicy living, juicy aging: Kick up your heels-- before you're too short to wear them. 2nd ed. Hay House, Inc., 2009.

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LaRoche, Loretta. Juicy living, juicy aging: Kick up your heels-- before you're too short to wear them. 2nd ed. Hay House, Inc., 2009.

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LaRoche, Loretta. Kick up your heels-- before you're too short to wear them: How to live a long, healthy, juicy life. Hay House, Inc., 2007.

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Joe, Kelly. Never wear black socks or a plain white t-shirt while running: And 501 other truths too simple not to know. Good Times Pub., 1997.

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author, Parry Richard 1956, ed. Too black to wear whites: The remarkable story of Krom Hendricks, a cricket hero who was rejected by Cecil John Rhodes's empire. Penguin Books, 2020.

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Cader, Lisa Lebowitz. When I wear my crown. Chronicle Books, 2002.

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Stiles, Dan. Today I'm going to wear--. Pow!, 2014.

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Carlstrom, Nancy White. Jesse Bear, what will you wear? Aladdin Paperbacks, 1996.

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ill, Degen Bruce, ed. Jesse Bear, what will you wear? Simon & Schuster Books for Young Readers, 2011.

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ill, Degen Bruce, ed. Jesse Bear, what will you wear? Aladdin Paperbacks, 1996.

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Book chapters on the topic "Too Wear"

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Klocke, F., C. Zeppenfeld, P. Mattfeld, and M. Zimmermann. "Manufacturing Tool-Coating-Compatible Stamping and Fine Blanking Tool Surfaces." In Friction, Wear and Wear Protection. Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527628513.ch68.

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Bobzin, K., N. Bagcivan, P. Immich, M. Ewering, and C. Warnke. "High Performance PVD Tool Coatings." In Friction, Wear and Wear Protection. Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527628513.ch67.

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Csanády, Etele, and Endre Magoss. "Tool Wear." In Mechanics of Wood Machining. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-51481-5_7.

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Csanády, Etele, and Endre Magoss. "Tool Wear." In Mechanics of Wood Machining. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29955-1_7.

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Biermann, D., J. F. Felderhoff, and M. Heilmann. "The Correlation of Thermo-Mechanical Stresses on Cutting Tool Wear." In Friction, Wear and Wear Protection. Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527628513.ch95.

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Hernández, Ricardo, Marlon R. Cruz, Ingrid Picas, Maria Dolors Riera, and Daniel Casellas. "Tribological Approach of Forming Tool Performance Based on Finite Element Modelling (FEM)." In Friction, Wear and Wear Protection. Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527628513.ch40.

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Olsson, D. D., and N. Bay. "Simulative Wear Testing of Tool Materials for Comminution of Hard Ore Material." In Friction, Wear and Wear Protection. Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527628513.ch55.

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Thuvander, A., and O. Sandberg. "Computation of Die Loads in Sheet Forming Using Dies of Tool Steel with Improved Anti-galling Properties." In Friction, Wear and Wear Protection. Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527628513.ch41.

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Sheikh-Ahmad, Jamal Y. "Tool Materials and Tool Wear." In Machining of Polymer Composites. Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-68619-6_4.

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Murrenhoff, Hubertus. "Introduction and Survey of the Research within the Collaborative Research Center 442 ‘Environmentally Friendly Tribosystems by Suitable Coatings and Fluids with Respect to the Machine Tool’." In Friction, Wear and Wear Protection. Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527628513.ch63.

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Conference papers on the topic "Too Wear"

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Schumacher, W. J. "Corrosive Wear Principles." In CORROSION 1992. NACE International, 1992. https://doi.org/10.5006/c1992-92316.

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Abstract The dual effects of corrosion and wear operate together in such industries as paper and pulp, coal handling, mining, and sugar beet extraction. There is a synergistic effect that causes far greater wastage to carbon steels, alloy steels, and even much more abrasion resistant cast irons. Several laboratory and in situ studies have been conducted to better understand the contributions of corrosion and wear to the wastage process. The environmental conditions are usually set by the process. However, there are a few instances where inhibitors such as sodium nitrite, sodium chromate, and sodium metasilicate have been successfully used to reduce metal wastage of carbon steels. Hardness has been found to be an unreliable guide to performance under wet sliding conditions. Heat treated alloy steels and cast irons are inferior to stainless steels. Even distilled water is too severe a corrodent for steels. While the austenitic stainlesses perform the best, cold rolling to increase hardness does not further improve their performance. The surface roughness of stainless steels gets smoother during corrosive wear testing while it gets rougher for the alloy steels. This observation substantiated the reputation of improved slideability for stainless alloys over alloy steels.
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Naik, Bharat. "Alphatic Thick Film Coatings – How You Can Have Your Cake and Eat It Too!!" In Paint and Coatings Expo (PACE) 2006. SSPC, 2006. https://doi.org/10.5006/s2006-00054.

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Abstract Recently, the advantages of thick film coatings and linings have led to uses in many different applications in the industrial, commercial and automotive markets. Although these polyurethane and polyurea materials have excellent physical properties, they are based on aromatic chemistry which is susceptible to damage from UV radiation and is not light stable. These aromatic-based materials discolor with sunshine and UV exposure. This presentation discusses a new type of thick film coating that utilizes aliphatic polyurethane chemistry. This material is relatively unaffected by UV radiation and is thus light stable. At the same time, they have been specially formulated to have excellent physical properties and wear performance. They exhibit excellent abrasion resistance, toughness and slip resistance while providing exceptional protection from detrimental effects of UV light. This paper presents the physical properties and performance characteristics of this new class of material. Weathering data comparing standard aromatic products versus the new aliphatic lining is provided. Potential applications for such protective linings are also discussed.
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Richerson, David W., and D. A. Haught. "Advanced Ceramics for High-Temperature Service." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99273.

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Abstract Extensive development of advanced ceramics during the past 30 years has resulted in major improvements in strength, fracture toughness, and high-temperature stability. Aluminum oxide, silicon carbide, silicon nitride, and transformation-toughened ceramics all have become well established in a wide range of industrial applications. Coatings have continued to grow in importance, and ceramic matrix composites are just beginning to enter field testing. In parallel to the materials improvements, advances in analysis and design methods have helped advanced ceramics to fit into applications previously thought too challenging for ceramics. The risk of catastrophic brittle failure of ceramics has now been reduced to a manageable level, so that engineers can take advantage of the favorable corrosion resistance, wear resistance, and high-temperature stability.
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Primeaux, Dudley J., Joseph Haydu, and Jonathan Haydu. "Into the Future: Advanced Thick-Film Spray Applied Liquid Waterproofing Membrane Systems for Bridge Deck Applications." In SSPC 2015 Greencoat. SSPC, 2015. https://doi.org/10.5006/s2015-00048.

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Abstract It does not take one with too much intelligence to note that our infrastructure is in dire shape. Not only does this include our water &amp; wastewater areas, but our road and bridge systems need substantial help. Deterioration due to environmental issues, water and chemicals that are used which cause for serious corrosion and erosion concerns. Over the years, a variety of methods have been employed to help with these issues, but all have individual characteristics and problems. As populations have grown in centralized areas, so does the abuse on the roads, scheduling repairs and time for those repairs, can create nightmares for local traffic. Thick-film spray applied waterproofing systems are not new to the coatings industry and have been successfully used to combat these corrosion and erosion activities. By following coating and lining industry standards; quality inspection techniques during installation; and, advancements in the product technology, these systems will provide for a high performance waterproofing membrane system for road and bridge application areas. This is a very fast set and cure technology which minimizes road work delays and offers the ability for complete wear-course applications; and, offers many advantages to waterproofing work in bridge applications. This presentation will focus on these advancements and performance properties; application and use techniques; as well as potential for robotic type installation that will carry us into the future.
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Şahin, Yusuf. "Mechanical and Thermal Property of Carbon Fiber Reinforced Composites." In The 12th International Conference on Fracture Fatigue and Wear. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-zoau9m.

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Thermal property of carbon fiber-reinforced polymer composites (CRFPs) fabricated through vacuum assisted resin transfer molding method (VARTM) is investigated using Thermo Gravimetric Analysis/Differential Scanning Calorimetry tool. These analysis on laminate composites with three different orientations are carried out at room temperature up to 800°C. Also, mechanical and water absorption behavior of polymeric composites are determined. Among the orientation effect, a longitudinal direction sample including 39 vol. % carbon fiber in epoxy resin indicated that the mass loss in percentage was lower while decomposition temperature was higher than those of others due to higher mechanical strength. These composites revealed the most thermally stable among the others. Further, lower amounts of water absorption rates were obtained at 0o-orientation, followed by 0/90o-orientation composites, but no significant variations occurred with these orientations while some variations occurred for 30o-orientation with increasing the soaking times.
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Liu, Kailun, and ZhiBin Miao. "Overview of Tool Wear Condition Monitoring Technology." In 2024 IEEE International Conference on Cognitive Computing and Complex Data (ICCD). IEEE, 2024. https://doi.org/10.1109/iccd62811.2024.10843454.

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Kadin, Yuri, Gerrit Jan Dop, Richard Schaake, Gijs de Kort, and Marcus Boehm. "Modeling of Fatigue/Creep in Polymer Cage of Large Size Bearing." In The 12th International Conference on Fracture Fatigue and Wear. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-lmja4i.

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A single pocket cage is the SKF product, which is used in Large Size Bearings for wind industry. The function of a bearing cage is to hold, guide and separate rolling elements, and differently from the conventional cage, the current one consists of segments, which eases the bearing assembly and reduces its weight. The long life challenge (25 years!) requires considering fatigue, and since the single pocket cage is made of PEEK polymer, it is also susceptible to creep (in near room temperature), which enhances fatigue damage. The current work proposes the numerical model capturing non-linear viscoelasticity of PEEK. The mechanical behavior of this material is identified in uniaxial tension test and is modeled in Finite Elements (FE) by means of the Parallel Rheological Framework (this numerical tool has been recently implemented in the commercial software ABAQUS). The current FE model enables to apply cyclic loading, simulating the material response of cage when it operates in running bearing. By applying sub-modeling technique only a small domain is modeled which improves the computational time efficiency. The sub-model domain corresponds to the cage region, where the stress is high resulting to the material yielding, fatigue/creep degradation (due to inelastic cyclic deformation) and initiation of fatigue crack. The FE results were combined with the test data, in attempt to relate the numerically predicted damage to the cage life. The development of irreversible deformation during cyclic loading, shakedown analysis and the stress volume effect, are the main focuses of the current work.
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Kim, W., T. Wong, and P. Kwon. "A Model-Based Prediction Approach to Understanding Tool Wear." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/med-23322.

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Abstract Since the development of Taylor’s wear equation in the early 1900s, empirical approaches to tool wear have been extensively used by industries. However, as many types of work materials and cutting tools have emerged, developing the empirical equation for each combination of work material and cutting tool is too costly and time-consuming. In this paper, we present a promising new model-based approach, where the developed model can be directly extended to other work materials and cutting tools. However, when machining pearlitic steels at high cutting speed, phase transformation restricts the model’s applicability. With phase transformation, the associated flank wear does not follow the model’s predictions. Evidently, the abrasive action of cementite is suppressed as the cementite phase in pearlitic microstructure transforms into austenite. This paper summarizes and reevaluates our previous experimental results in order to develop a model-based approach to understanding and predicting tool wear.
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Bagepalli, B. S., S. Dinc, B. Jlidi, I. Imam, J. Barnes, and C. Slocum. "Simulation of Large and Complex Structures With Multiple Contacts and Wear." In ASME 1992 International Computers in Engineering Conference and Exposition. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/cie1992-0025.

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Abstract This paper deals with the simulation methodology of large and complex structures with multiple contacts and wear. The methodology developed is used to evaluate the dynamics and wear of gas turbine combustors. A unified approach of representing multiple rigid/elastic bodies with numerous contacts is developed. Representation is made, too, of the changing nature of these contacts — both geometric and material. The entire methodology is implemented in a generic and easy-to-use simulation code which serves as a useful generic design/analysis evaluation tool MAP (Mechanism Analysis Program). Appropriate analytical models for inter-material constitutive laws — both incremental (contact friction, pressure, damping, etc.) and cumulative (wear theories) — are incorporated in the tool. As applications of this approach, dynamic simulations of two different gas turbine combustor designs are run, and comparisons are made with real systems. Excellent correlations have been obtained, both with respect to laboratory test (accelerometer) data, and wear patterns at various contacts and junctions on field samples.
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Bagepalli, B., S. Dinc, I. Imam, J. Barnes, and C. Slocum. "A System Dynamics Approach to Modeling Gas Turbine Combustor Wear." In ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/92-gt-047.

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This paper deals with the development of the basic understanding of dynamic and wear problems of combustor systems. A system dynamic modeling approach has been developed using a general purpose dynamic/wear analysis program (Mechanism Analysis Program, MAP), and excellent validation has been achieved via laboratory tests. The objective is to develop a generic design/analysis tool, both, for quick evaluation of preliminary designs, and for detailed design studies to create improved/optimized combustor designs from a wear/life perspective. Dynamic simulations of two different designs are run: Many worn field samples are available for one design, and laboratory test results for the other. The wear patterns on the former are matched very well by the analytical model. Excellent correlation, too, is obtained with the dynamic (accelerometer) measurements on the latter. It is, now, possible to isolate system dynamic causes (such as resonance) from material related ones (such as hardness) when designing for long life.
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Reports on the topic "Too Wear"

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Schwalb, J. A. Wear mechanism and wear prevention in coal-fueled diesel engines. Task 3, Traditional approaches to wear prevention. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/10123538.

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Rosato-Scott, Claire, Dani J. Barrington, Amita Bhakta, Sarah J. House, Islay Mactaggart, and Jane Wilbur. Incontinence: We Need to Talk About Leaks. Institute of Development Studies (IDS), 2020. http://dx.doi.org/10.19088/slh.2020.005.

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Anyone, of any gender, at any age, can leak urine or faeces. What would you do if it happened to you? Imagine if you’d woken up this morning and you’d wet the bed. What would you do? Have a wash, put on clean clothes, change the bedding and put it in a washing machine? You may go to the shop and buy an incontinence pad. And perhaps if you knew that there was help available for leaking urine you’d make an appointment to see a doctor next week and then just carry on with the rest of your day, dignity intact. Now imagine if you’d woken up this morning and you’d wet the bed. But to have a wash, or clean your clothes and bedding, you’d have to walk for an hour to collect water. Imagine you are frightened to walk there alone, the path is steep and you struggle to use the hand pump. Even if you did get water, you don’t have enough soap so the smells would linger anyway. And after all that effort, you have nothing to wear to soak up urine if it happens again. What if you didn’t know that leaking urine was common, and you spent the rest of the day worried about your health and too embarrassed to go to work in case people could tell? What if you were worried that your partner would hit you again for making a mess so you had very little to drink all day for fear of it happening again? What can you do to support people living with incontinence? To start, we need to talk about leaks.
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Rosato-Scott, Claire, Dani J. Barrington, Amita Bhakta, Sarah J. House, Islay Mactaggart, and Jane Wilbur. Incontinence: We Need to Talk About Leaks. Institute of Development Studies (IDS), 2020. http://dx.doi.org/10.19088/slh.2020.011.

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Anyone, of any gender, at any age, can leak urine or faeces. What would you do if it happened to you? Imagine if you’d woken up this morning and you’d wet the bed. What would you do? Have a wash, put on clean clothes, change the bedding and put it in a washing machine? You may go to the shop and buy an incontinence pad. And perhaps if you knew that there was help available for leaking urine you’d make an appointment to see a doctor next week and then just carry on with the rest of your day, dignity intact. Now imagine if you’d woken up this morning and you’d wet the bed. But to have a wash, or clean your clothes and bedding, you’d have to walk for an hour to collect water. Imagine you are frightened to walk there alone, the path is steep and you struggle to use the hand pump. Even if you did get water, you don’t have enough soap so the smells would linger anyway. And after all that effort, you have nothing to wear to soak up urine if it happens again. What if you didn’t know that leaking urine was common, and you spent the rest of the day worried about your health and too embarrassed to go to work in case people could tell? What if you were worried that your partner would hit you again for making a mess so you had very little to drink all day for fear of it happening again? What can you do to support people living with incontinence? To start, we need to talk about leaks.
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Ives, L. K., M. Peterson, A. W. Ruff, J. S. Harris, and P. A. Boyer. Wear due to printing inks. National Bureau of Standards, 1987. http://dx.doi.org/10.6028/nbs.ir.87-3574.

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Fenske, George, and Oyelayo Ajayi. Application of an Erosion Wear Model to Predict Wear of Hammer Milling Components. Office of Scientific and Technical Information (OSTI), 2020. http://dx.doi.org/10.2172/1763729.

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Lazarus, L. J. Feasibility of using acoustic emission to determine in-process tool wear. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/233286.

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Forman, Mark R. Too Fat To Fight-Too Weak To Win, Soldier Fitness In The Future? Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada324407.

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Gravante, Steve, George Fenske, Nicholas Demas, and Robert Erck. Methods to Measure, Predict and Relate Friction, Wear and Fuel Economy. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1427029.

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Kudin, Roman, Niranjan Singh, Prabhat Chand, Anura Bakmeedeniya, and Jone Tawaketini. Estimating Emissions from Tyre Tread Wear of Motor Vehicles. Unitec ePress, 2024. http://dx.doi.org/10.34074/ocds.108.

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Over 5.6 million road vehicles are registered in New Zealand, with a wide range of contaminants released as a result of their operation. The material wearing out from tyre tread has previously been identified as a contaminant of potential concern (COPC) in New Zealand, but its amount has not been quantified. Numerous studies confirm that the wear rate of a tyre depends on multiple factors and can vary significantly, even for the same type of vehicle with the same tyres installed. Such factors have already been classified and weighted; therefore, they were not the subject of the current research. The aim of this study is to estimate the total amount of material released into the environment in New Zealand due to the tread wear of tyres. In this research, the New Zealand motor vehicle fleet was divided into categories according to the available statistical data. The estimation of the amount of the tyre material released into the environment was done separately in each category of vehicle, using the three-point method (Low, Medium and High). The calculation was performed using the statistical average annual distances driven by vehicles, and the tyre abrasion rates, also called emission factors (mg/km). The emission factors were adopted through a thorough review of the available studies of tyre abrasion rates in different countries. The three-point estimate shows that every year roughly 6.5 to 15.5 thousand tonnes of material from tyre tread wear is released into the environment in New Zealand, which gives between 1.26 and 2.97 kg when converted per capita. Such quantification is an important step in understanding the impacts of this contaminant on New Zealand ecosystems. Further research of tyre tread wear material is needed with regard to its emission factors; deposition, migration and concentrations in environmental compartments; accumulation and degradation paths; effects on living organisms and human health.
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Murray, Matthew, and Daniel Harder. Performance of Army Corps of Engineers mat system using anchorless connections : a follow-on study of site stabilization for the Improved Ribbon Bridge Bridge Supplemental Set. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/48592.

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The US Army Engineer Research and Development Center conducted testing of the Army Corps of Engineers mat system with improved anchorage and connection hardware. Low-profile screw anchors replaced the ground anchorage of the existing system to reduce wear to tracks and wheels of vehicles while trafficking the system. Anchorless connections allowed the system to be placed over soils where the use of screw anchorage would be obstructed or would cause hazards to trafficking vehicles. Test tracks were constructed to evaluate the matting system with new anchorage and connection hardware over three different soils of weak sand and clay. Channelized traffic was applied to the test tracks using a loaded common bridge transporter. Performance of the updated system was evaluated with respect to results from previous testing, indicating that the improved anchorage and connection hardware increased the versatility of the matting system without sacrificing system performance.
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