Gotowe bibliografie tematyczne / Washboarding

Spis treści

  1. Artykuły w czasopismach
  2. Rozprawy doktorskie
  3. Streszczenia konferencji

Gotowa bibliografia na temat „Washboarding”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 14 lutego 2022

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Artykuły w czasopismach na temat "Washboarding"

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Le-Ngoc, L., i H. McCallion. "Self-induced vibration of bandsaw blades during cutting". Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 213, nr 4 (1.04.1999): 371–80. http://dx.doi.org/10.1243/0954406991522329.

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A new interpretation of the washboarding phenomenon found in bandsawing of wood is given in this paper. A theoretical model of the washboarding pattern was derived by considering the motion of the teeth during cutting. The theory of machine tool chatter was adapted to illustrate the mechanism of self-induced vibration in bandsawing and to provide a criterion for its existence. It was found that the whole cutting span of the band should be used to determine the vibration characteristics instead of the previous practice of using the section between the workpiece and the top wheel. It has been found that the frequencies responsible for washboarding are all torsional frequencies and physical explanation for this is suggested by considering the squeeze film damping effect of the air gaps between the blade and the sawn surfaces.
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Zhu, Nanfeng, Chiaki Tanaka, Tadashi Ohtani i Hiroshi Usuki. "Automatic detection of washboarding in bandsaws". Journal of Wood Science 47, nr 2 (kwiecień 2001): 102–8. http://dx.doi.org/10.1007/bf00780557.

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Netz, Erik. "Washboarding and print quality of corrugated board". Packaging Technology and Science 11, nr 4 (lipiec 1998): 145–67. http://dx.doi.org/10.1002/(sici)1099-1522(199807/08)11:4<145::aid-pts426>3.0.co;2-6.

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Orlowski, Kazimierz, i Roman Wasielewski. "Study washboarding phenomenon in frame sawing machines". Holz als Roh- und Werkstoff 64, nr 1 (2.12.2005): 37–44. http://dx.doi.org/10.1007/s00107-005-0037-0.

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Monlux, Stephen. "Stabilizing Unpaved Roads with Calcium Chloride". Transportation Research Record: Journal of the Transportation Research Board 1819, nr 1 (styczeń 2003): 52–56. http://dx.doi.org/10.3141/1819b-07.

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The U.S. Department of Agriculture Forest Service has stabilized unpaved road surfacing materials with relatively high concentrations of calcium chloride salt. The percentage of calcium chloride is higher than that traditionally used for dust abatement or aggregate base stabilization. Up to 2% pure salt by weight of aggregate was mixed into the top 2 in. (50 mm) of both aggregate and native road surfaces. The results were monitored for 2 to 4 years. The stabilized road surfaces resisted raveling and washboarding for several seasons and significantly reduced road blading and aggregate loss. As a result, calcium chloride stabilization may be a cost-effective treatment for roads with daily traffic volumes less than 200. Other benefits include reduced surface erosion and sedimentation; improved safety from reduced dust, raveling, and washboarding; and less frost penetration. Encouraged by these results, the Forest Service is conducting additional evaluations to determine the cost-effectiveness of surface stabilization with both magnesium chloride and calcium chloride in different environments and with different aggregate materials.
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Orlowski, Kazimierz A., Michal Dobrzynski, Grzegorz Gajowiec, Marcin Lackowski i Tomasz Ochrymiuk. "A Critical Reanalysis of Uncontrollable Washboarding Phenomenon in Metal Band Sawing". Materials 13, nr 20 (9.10.2020): 4472. http://dx.doi.org/10.3390/ma13204472.

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The article analyzes the cutting process of hard bars. Investigations conducted in industrial conditions demonstrated the presence of surface errors in the machined workpieces in the form of washboard patterns. The purpose of this study was to analyze the results of cutting on band sawing machines with different band saw blades. The cutting processes were conducted on three different horizontal band sawing machine types. Analyzed material was an alloy steel Ø40 mm rod with a hardened surface covered with a thin layer of chromium. The hardness of the outer layer was 547 HV with a core hardness of 180 HV. The surface topography measurements of the processed workpieces were carried out with the 3D Optical Profiler, which supplied information on the irregularities of the processed material texture. In each of the analyzed cases, a corrugated surface was obtained after sawing, which is the effect of the occurrence of the washboarding phenomenon, despite the fact that the teeth of each band saw had variable pitches. The washboarding phenomenon when cutting rods with hard surfaces is caused by the phenomenon of wave regeneration. Despite the use of variable pitch saw blades, the cutting process results in rippling of the sawn surface, which is caused by the high hardness of the outer layer of the workpiece, as well as by the type of tool with spring setting of teeth.
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Taulman, James F. "Washboarding in Feral Honey Bees, Apis mellifera: Observations at Natural Hives". Transactions of the Kansas Academy of Science 120, nr 1-2 (kwiecień 2017): 31–38. http://dx.doi.org/10.1660/062.120.0104.

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Lee, Seoungjun, i Junyoung Park. "Effects on the Washboarding Phenomenon Based on the Size of the Rotating Body Using a Discrete Element Method". Korean Society of Manufacturing Process Engineers 20, nr 8 (30.08.2021): 25–32. http://dx.doi.org/10.14775/ksmpe.2021.20.08.0025.

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Lee, Seoungjun, i Junyoung Park. "A Numerical Analysis for the Washboarding Phenomenon on the Top Surface of Fine Powders Using the Discrete Element Method". Korean Society of Manufacturing Process Engineers 19, nr 4 (30.04.2020): 93–98. http://dx.doi.org/10.14775/ksmpe.2020.19.04.093.

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Rozprawy doktorskie na temat "Washboarding"

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Wendler, Sven Dieter, i not supplied. "Washboarding of Corrugated Cardboard". RMIT University. Applied Physics, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080107.112118.

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The aims of the thesis were to study how washboarding (the undulations present on the surface of corrugated cardboard used to manufacture boxes) relates to the mechanical properties of paper and the board manufacturing conditions and to examine the impact of washboarding upon the structural integrity and printability of corrugated cardboard packaging. A digital image profilometry technique was developed to measure the washboarding profiles of corrugated board. This technique was used to measure the washboarding depth and profiles for a range of corrugated boards, some constructed manually and some machine manufactured. This enabled a study into how a change in the mechanical properties of paper and glue affect washboarding depth. The effect that the speed of machine manufacturing had upon the degree of washboarding was also determined. A study of how environmental conditions affect washboarding geometry was undertaken. The effects of the extent of washboarding upon a range of board performance measures were tested empirically and modelled using Finite Element Analysis. These were edgewise compression testing (ECT), three-point bend, and MD-Shear (an Amcor Ltd. proprietary test). A method was developed to measure full-tone print coverage of corrugated board and was used to study how washboarding affects the printing quality of corrugated board.
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Dalziel, Michael. "Parametric excitations of a traveling beam and the washboarding problem in bandsawing". Thesis, 2003. http://hdl.handle.net/2429/14522.

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This thesis is investigates the effect of primary cutting parameters and simple bandsaw blade geometry on the occurrence and severity of Type I washboarding in bandsaws. The mechanisms causing Type I washboarding are not currently well understood. To achieve a better understanding of the problem, both an analytical approach dealing with parametric axial excitations of a traveling beam, and an experimental approach are undertaken and the results of both studies are compared. The effect of in plane axial blade loading on a simple traveling beam model is examined. The governing differential equations of motion contain parametric stiffness terms that require the use of a perturbation method for an approximate solution. The perturbation method used in this work is the method of multiple scales. In one blade model, the effect of axial tension fluctuations at the tooth passing frequency due to fluctuations in the total axial cutting load is studied. In the second model, the effect of low frequency axial tension fluctuations in combination with a lateral excitation at the tooth passing frequency is studied. The second model gives response characteristics very similar to those seen in experimental cutting tests including a response at the tooth passing frequency and a response below the tooth passing frequency by an amount equal to the low frequency axial tension fluctuation. Cutting test data is examined to determine the pertinent response characteristics during Type I washboarding. It is found that two main components of response lead to Type I washboarding; a response at the tooth passing frequency and one at a frequency slightly lower than the tooth passing frequency. The behavior of these two responses with changes in primary cutting parameters is very similar to what is predicted by the second traveling beam model
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Luo, Zhusan. "Parametric vibrations of traveling plates and the mechanics of washboarding in bandsaws". Thesis, 2001. http://hdl.handle.net/2429/13767.

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This thesis presents a study on the high frequency dynamic behavior of traveling plates subjected to in-plane stresses. The effects of damping, parametric and modulated excitations on the vibration characteristics of the plates are considered. The application of this work to the explanation of the mechanisms responsible for washboarding in bandsaws is presented. A high frequency mode of a traveling plate is defined using the envelope of its mode shapes. Modal analysis of a traveling plate is conducted theoretically and experimentally. The effects of the traveling speed, the in-plane stresses and the plate geometry on the natural frequencies are examined. The self-excited vibration of a smooth band subjected to lateral regenerative forces is studied and the instability regions are determined. In order to model the tooth profiles and the moving lateral cutting forces applied at the teeth of a bandsaw blade, a finite element model is built and three moving plate elements are developed. The stability of the blade is investigated based on this model. The analytical results based on the smooth band model and the finite element model are consistent with the experimental results from modal testing. The vibration responses and stability of a damped spring-mass system and a damped smooth band subjected to both parametric and modulated excitations are investigated. The maximum magnification factor corresponds to the excitation at the lowest exciting frequency due to the effect of regenerative forces. The instability regions of this system are reduced by increasing damping or decreasing regenerative forces. A kinematic model of washboarding is built based on the loci of teeth so that a washboarding pattern can be simulated and the washboarding mode can be determined by decoding the pattern. Two types of washboarding patterns are observed in the cutting tests. Type I washboarding is explained as the result caused by the modulated and forced vibration due to the displacement excitations from the guides. Type II washboarding is caused by the self-excited vibration due to the regenerative cutting forces.
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Streszczenia konferencji na temat "Washboarding"

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Reich, Michael H., i Russell Allan. "Measurement of washboarding of corrugated cardboard using digital image profilometry". W Electronic Imaging: Science & Technology, redaktorzy A. Ravishankar Rao i Ning Chang. SPIE, 1996. http://dx.doi.org/10.1117/12.232235.

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