Journal articles: 'Rolling sounds'

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Murphy, Emma, Mathieu Lagrange, Gary Scavone, Philippe Depalle, and Catherine Guastavino. "Perceptual Evaluation of Rolling Sound Synthesis." Acta Acustica united with Acustica 97, no. 5 (September 1, 2011): 840–51. http://dx.doi.org/10.3813/aaa.918464.

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Three listening tests were conducted to perceptually evaluate different versions of a new real-time synthesis approach for sounds of sustained contact interactions. This study aims to identify the most effective algorithm to create a realistic sound for rolling objects. In Experiment 1 and 2, participants were asked to rate the extent to which 6 different versions sounded like rolling sounds. Subsequently, in Experiment 3, participants compared the 6 versions best rated in Experiment 1 and 2, to the original recordings. Results are presented in terms of both statistical analysis of the most effective synthesis algorithm and qualitative user comments. On methodological grounds, the comparison of Experiments 1, 2 and 3 highlights major differences between judgments collected in reference to the original recordings as opposed to judgments based on memory representations of rolling sounds.

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Conan, Simon, Etienne Thoret, Mitsuko Aramaki, Olivier Derrien, Charles Gondre, Sølvi Ystad, and Richard Kronland-Martinet. "An Intuitive Synthesizer of Continuous-Interaction Sounds: Rubbing, Scratching, and Rolling." Computer Music Journal 38, no. 4 (December 2014): 24–37. http://dx.doi.org/10.1162/comj_a_00266.

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In this article, we propose a control strategy for synthesized continuous-interaction sounds. The framework of our research is based on the action–object paradigm that describes the sound as the result of an action on an object and that presumes the existence of sound invariants (i.e., perceptually relevant signal morphologies that carry information about the action's or the object's attributes). Auditory cues are investigated here for the evocations of rubbing, scratching, and rolling interactions. A generic sound-synthesis model that simulates these interactions is detailed. We then suggest an intuitive control strategy that enables users to navigate continuously from one interaction to another in an “action space,” thereby offering the possibility to simulate morphed interactions—for instance, ones that morph between rubbing and rolling.

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Charan Agrawal, Vrushank. "The Effect of Thickness of A Plectrum Used on The Sound Produced by A Guitar String." Oriental Journal of Physical Sciences 3, no. 2 (December 25, 2018): 87–91. http://dx.doi.org/10.13005/ojps03.02.03.

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It is believed that the human ear is very sensitive to subtle changes in sounds. In the context of a guitar, the myriad of sounds produced by the strings depends majorly on the plucking technique of the player, but it is hypothesized that the sound produced by a string is also influenced, to some degree, by the thickness of the plectrum used for playing. This has led many to speculate whether bands and artists like the Beatles, Led Zeppelin and the Rolling Stones would have sounded very different if they hadn't used the right guitar plectrum. In this research paper, three plectrums of different thickness have been used to pluck electric guitar strings and the output electric voltage has been documented using the software Visual Analyzer. The observations show that the thickness of a plectrum indeed influences the sound produced by a guitar string to a significant extent

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Conan, Simon, Olivier Derrien, Mitsuko Aramaki, Solvi Ystad, and Richard Kronland-Martinet. "A Synthesis Model With Intuitive Control Capabilities for Rolling Sounds." IEEE/ACM Transactions on Audio, Speech, and Language Processing 22, no. 8 (August 2014): 1260–73. http://dx.doi.org/10.1109/taslp.2014.2327297.

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Aswin, Muhammad, I. N. G. Wardana, Yudy Surya Irawan, and Hadi Suyono. "Bearing Damage Detection Based on Sound Signal." Applied Mechanics and Materials 548-549 (April 2014): 698–702. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.698.

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This paper presents a new method in damage detection by taking the sound signals of the rolling bearings in different levels. The tested bearing was put on the end of the shaft rotated by permanent magnet synchronous motor. The sound signal produced by this rig was recorded separately for each bearing condition with the same experimental environment. The sound data signals are compared each other. Based on the cross-correlation analysis, the recorded sound signal proved that the signals were recorded with the same environment. The power spectra calculation has shown different harmonic frequencies according to various bearing conditions. The total power of the sound is decreased along with the increasing damage. This is also confirmed by the auto-correlation of each sound signal that shows the appearance of the sounds impulse repetition with a wider period.

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Stoelinga, Christophe, Dik Hermes, and Armin Kohlrausch. "Using multidimensional scaling to determine distances in the perceptual space of rolling sounds." Journal of the Acoustical Society of America 119, no. 5 (May 2006): 3237. http://dx.doi.org/10.1121/1.4785991.

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Torija Martinez, Antonio J., Andrew Elliott, Lara Harris, Zuzanna Podwinska, and Connor Welham. "Generation and Analysis of Artificial Warning Sounds for Electric Scooters." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 7 (February 1, 2023): 977–87. http://dx.doi.org/10.3397/in_2022_0139.

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Micro-mobility transportation, including electric scooters and e-bikes, could bring substantial benefits to resolving road congestion, provide an eco-friendly transportation system, offer low-cost personal transportation, and increase accessibility. Another benefit is that electric scooters are very quiet, only producing some minimal rolling noise and high frequency emission due to electric motors. Quietness of the vehicles has led to safety concerns being raised by accessibility groups, such as the Royal National Institute of Blind people (RNIB). For this reason, we have teamed up with the RNIB to explore, well-designed Acoustic Vehicle Alerting Systems (AVAS) as a potential solution to ensure vehicle detection and avoid potential conflict with pedestrians. This paper presents the key findings of a research project carried out by the University of Salford's Acoustic Research Centre, in collaboration with Dott Scooters and RNIB. The goal of this project was to develop a stand-alone warning sound system for electric scooters, with the main constraint of ensuring an appropriate balancing between vehicle awareness and noise annoyance. Based on preliminary results, this project concluded that a significant benefit, in terms of vehicle noticeability, is observed with the addition of a warning sound. Funding has been secured to carry out further research to optimise the AVAS for complex urban environments.

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Shash, Mayssa, and Hasan Hsamou. "Experimental study on triblogical behaviors of PA6 and PTFE polymers in the case of rolling friction." Association of Arab Universities Journal of Engineering Sciences 27, no. 3 (September 30, 2020): 138–49. http://dx.doi.org/10.33261/jaaru.2020.27.3.015.

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Rolling/sliding contacts, such as rolling-element bearings or gears, are a keystone of many machines, which could not properly operate in absence of these components. Machine elements of this kind are typically made of certain variants of steel, whereby hardening processes are carried out in order to increase lifetime and reduce wear. Furthermore, proper lubrication of these tribo-systems is inevitable in order to guarantee a safe operation throughout the component’s lifetime. In recent years high performance polymers, such as Polyether ether ketone (PEEK) or polyamid 46 (PA46), have become an option for application in rolling/sliding contacts. Due to the low density and effective manufacturing processes, such as injection moulding, polymers enable lightweight design solutions under relatively low cost. A comparative investigation based on tribological properties including the friction and wear behaviour of two polymers (Polyamide 6, Polytetrafluoroethylene) was researched in this study. Where samples were prepared by machining for precast cylinders of these materials, and experiments were carried out using a device designed for this purpose, with two parameters (rolling speeds and loads) in select. The morphology of the polymeric transfer film which plays a lubricating role in the dry operation conditions was observed for both materials. The obtained results showed that the friction feature of PTFE was better than that of PA 6 which released high sounds during testing duo to adhesion bonds with metallic counterface. The main wear mechanism of polyamide was micro mechanical machining and deformation, while was adhesive wear for PTFE, and the wear rate of PTFE was very high compared to PA 6 which suffered from delamination wear in some cases

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Pieren, Reto, Fotis Georgiou, Giacomo Squicciarini, and David J. Thompson. "Auralisation of combined mitigation measures in railway pass-by noise." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 6 (February 1, 2023): 1093–101. http://dx.doi.org/10.3397/in_2022_0151.

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To reduce noise exposure along railway lines various combinations of noise mitigation measures can be considered. However, predicting and assessing their effects is non-trivial and the potential need for multiple measures is difficult to communicate to stakeholders. Auralisation is a promising tool that can help to support communication and decision-making, and enable psychoacoustic evaluations. This paper presents developments of a physics-based auralisation model for train pass-bys that allows various mitigation measures to be included. The work is conducted within the European research project SILVARSTAR. The proposed model includes contribution from rolling noise, impact noise, traction, auxiliary systems, and aerodynamic noise. It is physically based and allows a direct assessment of pass-by parameters such as speed, roughness, wheel flats and track design. Based on the TWINS model, five structural transfer paths for rolling noise are considered to integrate mitigation measures such as wheel and rail dampers. Shielding by noise barriers is simulated with analytical models. Reflection at different ground types is considered and can account for track embankments. The results can be coupled to an immersive Virtual Reality environment, by first panning the synthesised sounds to a small virtual speaker array and subsequently dynamic binaural rendering for headphones.

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Wadhokar, Om C. "DEVELOPMENTAL DELAY IN 14 MONTH OLD BOY WITH GRADE I MALNUTRITION." Journal of Medical pharmaceutical and allied sciences 10, no. 4 (October 15, 2021): 3377–79. http://dx.doi.org/10.22270/jmpas.v10i4.1272.

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When a child does not meet his or her developmental milestones within the predicted time or age, this is referred to as developmental delay. Developmental milestones are activities that certain children master or acquire at specific ages. Head balance, rolling, crawling, driving, and talking are a few examples. The mechanism of growth and the completion of such developmental milestones are referred to as child development. The patient was a 14 months old male child came to the hospital with complaint of inability to sit also he is unable to hold anything in his hand. As narrated by the mother the child was born to G2P1L1A1 mother at 9 months 5 days of gestation. The child has not yet attained gross motor milestone such as rolling over and no sit with support. The child attained immature pincer grasp at 12 months of age and has not attained mature pincer grasp. Social smile was attained at 6 months, stranger anxiety at 12 months and the child has not attained bye-bye. The child was alert to sounds by the age of 9 months .babbles at 10 months and says mama-dada at 12 months. The child is immunized till age. The marriage of the parents was non-consanguineous marriage. The child was born with a weight of 2.5 kg the mother had LSCS and breech delivery. The child did not cry immediately after birth. The child has history of fever after 3 months of delivery. The child is also interpreted as grade 1 mild malnutritious (71-80) %. Developmental delay and grade 1 mild malnutrition. The above study shows that Neck facilitation exercises in prone lying, Ice technique and proper brush technique for neck facilitation improves neck holding. Rolling facilitation in side lying position and proper handling positions helps in attaining milestones such as Rolling over. Facilitation of extension tone with vestibular rehabilitation helps to facilitate extensors. Family plays an important role in the management of such cases all the exercises should be properly explained to them for more improvement. Supporting the child while sitting, for example, might help him or her develop weight shifting, rotation, coordination, and balance.

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McCrone, Walter C. "Isolation of Single Crystals from Liquid Drops." Microscopy Today 2, no. 3 (May 1994): 13–15. http://dx.doi.org/10.1017/s1551929500065433.

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Microscopists often recrystallize or precipitate compounds for purposes of identification. Almost as often, a few crystals form that are irresistibly beautiful and demand isolating for single-crystal x-ray diffraction, spindle stage, polarized IR absorption, or remounting in a crystal-rolling medium like Aroclor® 1260.The isolation of one such crystal among hundreds from the center of a drop is not as difficult as it sounds. It is done at 50-100X under a stereomicroscope using a fine, usually a tungsten, needle. The needle may (rarely) need to be surface-treated by rubbing with a water-insoluble wax (then tissue-wiped “clean”) to prevent creeping of the solution up the needle and causing solution (and crystal) movement.The needle is used to clear a path for the desired crystal by pushing the edge crust and other intervening crystals to one side. Complete clearance is not necessary. The desired crystal is then pushed with the needle along the slide to the edge and then well outside of the drop. A few smaller crystals and much solution may accompany it.

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Shafi, Sophia Rose. "The Ayatollah Begs to Differ." American Journal of Islam and Society 28, no. 3 (July 1, 2011): 153–55. http://dx.doi.org/10.35632/ajis.v28i3.1249.

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Hooman Majd, a former writer for the Rolling Stone and movie producer,is uniquely qualified to write a book about Iran for an American audience.As he admits, “A friend once told me that that I was the only personhe knew who was both 100 percent American and 100 percent Iranian.Oxymoronic as that sounds, I knew what he meant. I was raised andeducated completely in the West, but am the grandson of a well-respectedAlameh (learned) and Ayatollah; my first language is English, but I am alsofluent in Farsi and am told that I speak it without an identifying accent.But more important, my Western outlook on life doesn’t interfere with mycomplete ease in the company of even the most radical of Iranian politicalor religious figures (and often theirs with me), and in my travels to IranI have often thought there must be a toggle switch somewhere along theelectrical system in my brain that is magically triggered to ʻEast’ whenmy plane crosses into Iranian airspace (8‒9).” Due to this toggle switch,Majd is able to highlight the very important role Persian culture plays in Iranian history and politics ‒ challenging the assumptions often madeabout Iranian clerics, politicians, and citizens ...

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Taillefer, François. "Les rivages des Bermudes et les formes littorales de dissolution du calcaire." Cahiers de géographie du Québec 2, no. 2 (April 12, 2005): 115–37. http://dx.doi.org/10.7202/020026ar.

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The littoral morphology of the Bermudas is an erosional morphology in limestones, the main processes being mechanical action and solution. The temperatures, in January and February, of the waters washing the Bermudas, are low enough to prevent the growing of true coral reefs. Therefore, it is not the morphology of a coral reef. The predominance of wave-cut cliffs is the most striking feature, despite the low and gently rolling topography. There are, however, other types of coasts on the islands, the mangrove being found on many sheltered shores. The writer thus opposes the sheltered shores of the sounds to the ones exposed on the southcoast, while the shores of the north and north-east coasts belong to an intermediate type. The steplike arrangement of the coastal forms of solution of the Bermudas limestones is primarily linked to the amount of the tidal range. These features are similar to those described on the shores of the warm seas, where the tide is negligible or weak. The Bermudas occupy an intermediate position between the regions where reefs are built by corals, and those, to the north, where solution, helped by other processes, occurs without compensation.

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Dal Palù, Doriana, Eleonora Buiatti, Giuseppina Emma Puglisi, Olivier Houix, Patrick Susini, Claudia De Giorgi, and Arianna Astolfi. "The use of semantic differential scales in listening tests: A comparison between context and laboratory test conditions for the rolling sounds of office chairs." Applied Acoustics 127 (December 2017): 270–83. http://dx.doi.org/10.1016/j.apacoust.2017.06.016.

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15

Dunkel, Jörn. "Rolling sound waves." Nature Materials 17, no. 9 (August 23, 2018): 759–60. http://dx.doi.org/10.1038/s41563-018-0155-9.

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Brinkmeier, Maik, Udo Nackenhorst, and Heiner Volk. "A Finite Element Approach to the Transient Dynamics of Rolling Tires with Emphasis on Rolling Noise Simulation4." Tire Science and Technology 35, no. 3 (September 1, 2007): 165–82. http://dx.doi.org/10.2346/1.2768975.

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Abstract The sound radiating from rolling tires is the most important source of traffic noise in urban regions. In this contribution a detailed finite element approach for the dynamics of tire/road systems is presented with emphasis on rolling noise prediction. The analysis is split into sequential steps, namely, the nonlinear analysis of the stationary rolling problem within an arbitrary Lagrangian Eulerian framework, and a subsequent analysis of the transient dynamic response due to the excitation caused by road surface roughness. Here, a modal superposition approach is employed using complex eigenvalue analysis. Finally, the sound radiation analysis of the rolling tire/road system is performed.

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Igarashi, Teruo, Takafumi Yoshida, and Makoto Murata. "Studies on Rolling Sound. 1st Report, Fundamental Characteristics of Sound." Transactions of the Japan Society of Mechanical Engineers Series C 60, no. 574 (1994): 1993–2000. http://dx.doi.org/10.1299/kikaic.60.1993.

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Igarashi, Teruo, Takafumi Yoshida, and Kentaro Hattori. "Studies on Rolling Sound. 3rd Report, Generation Mechanism of Sound." Transactions of the Japan Society of Mechanical Engineers Series C 60, no. 578 (1994): 3372–79. http://dx.doi.org/10.1299/kikaic.60.3372.

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Pandey, Shashikant, and Muniyappa Amarnath. "Applications of vibro-acoustic measurement and analysis in conjunction with tribological parameters to assess surface fatigue wear developed in the roller-bearing system." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 235, no. 10 (January 8, 2021): 2034–55. http://dx.doi.org/10.1177/1350650120982465.

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Rolling-element bearings are the most commonly used components in all rotating machinery. The variations in the operating conditions such as an increase in the number of operating cycles, load, speed, service temperature, and lubricant degradation result in the development of various defects such as pitting, spalling, scuffing, scoring, etc. The defects that appeared on rolling contact surfaces cause surface deterioration and change in the vibration and sound levels of the bearing system. The present experimental investigations are aimed at assessing the surface fatigue wear that appears on the contact surfaces of roller bearings. The studies considered the estimation of specific film thickness, analysis of surface fatigue wear developed on the rolling-element surfaces, surface roughness analysis, grease degradation analysis using Fourier transform infrared radiation, and vibration and sound signal measurement and analysis. The results obtained from the experimental investigation provide a good correlation between surface wear, vibration, and sound signals with a transition in the lubrication regimes in the Stribeck curve.

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Kropp, Wolfgang, Patrick Sabiniarz, Haike Brick, and Thomas Beckenbauer. "On the sound radiation of a rolling tyre." Journal of Sound and Vibration 331, no. 8 (April 2012): 1789–805. http://dx.doi.org/10.1016/j.jsv.2011.11.031.

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Lu, Zheng Guan, Jie Wu, Rui Peng Guo, Jia Feng Lei, Lei Xu, and Rui Yang. "Prediction of Ring Rolling Process of PM Ti₂AlNb Alloy by Hot Isostatic Pressing Based on Gleeble-3800 and FE Simulation." Materials Science Forum 849 (March 2016): 753–59. http://dx.doi.org/10.4028/www.scientific.net/msf.849.753.

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Hot workability during hot ring rolling of Ti2AlNb alloy prepared by hot isostatic pressing (HIPing) was studied in this work. Compression results showed that the hot workability of HIP’ed Ti2AlNb was comparable to that of wrought Ti2AlNb. O phase disappeared in compression samples (conducted from 930~1030°C, ~50% total reduction) after deformation which is considered to cause elongation decrease. Finite element method (FEM) was used to predict the temperature/strain distribution during rolling process, and the results indicated that the rolling parameters were very crucial. A sound hot ring rolled billet was successfully fabricated based on an optimized rolling process. Thermal mechanical simulation and FEM are very useful tools for parameters selection during ring rolling.

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Hou, Bowen, Jiajing Li, Liang Gao, and Di Wang. "Multi-Source Coupling Based Analysis of the Acoustic Radiation Characteristics of the Wheel–Rail Region of High-Speed Railways." Entropy 23, no. 10 (October 12, 2021): 1328. http://dx.doi.org/10.3390/e23101328.

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Based on elastic mechanics, the fluid–structure coupling theory and the finite element method, a high-speed railway wheel-rail rolling-aerodynamic noise model is established to realize the combined simulation and prediction of the vibrations, rolling noise and aerodynamic noise in wheel-rail systems. The field test data of the Beijing–Shenyang line are considered to verify the model reliability. In addition, the directivity of each sound source at different frequencies is analyzed. Based on this analysis, noise reduction measures are proposed. At a low frequency of 300 Hz, the wheel-rail area mainly contributes to the aerodynamic noise, and as the frequency increases, the wheel-rail rolling noise becomes dominant. When the frequency is less than 1000 Hz, the radiated noise fluctuates around the cylindrical surface, and the directivity of the sound is ambiguous. When the frequency is in the middle- and high-frequency bands, exceeding 1000 Hz, both the rolling and total noise exhibit a notable directivity in the directions of 20–30° and 70–90°, and thus, noise reduction measures can be implemented in these directions.

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Bienefeld, Christoph, Andreas Vogt, Marian Kacmar, and Eckhard Kirchner. "Feature-Engineering für die Zustandsüberwachung von Wälzlagern mittels maschinellen Lernens." Tribologie und Schmierungstechnik 68, no. 6 (December 15, 2021): 5–11. http://dx.doi.org/10.24053/tus-2021-0032.

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In rotating machinery, rolling bearings are often the components limiting service life. To avoid unforeseen downtimes, they have to be maintained. For reasons of safety and cost optimization, condition-based maintenance is increasingly being used. Knowing the condition of the components that are critical to wear is essential for this maintenance approach. The insight about the condition is achieved by means of suitable measurement variables, which can be used to automatically detect the condition of the components using machine learning. The quality of the condition monitoring is strongly dependent on the available measurement data and its preprocessing. For condition monitoring of rolling bearings, structure-borne sound signals can be used. The decisive factor here is to determine so-called features from the high-frequency sampled structure-borne sound signals. These features are supposed to reflect the characteristic properties of the measured signals. At the same time, the amount of data is considerably reduced. In this article, different methods of feature engineering based on structure-borne sound are investigated. For this purpose, the wear of rolling bearings is considered in the context of endurance tests. A new feature generation method is presented and compared to common methods from literature.

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Barral, Amaury, Quentin Louis, Clément Brochet, Julie André, Anthony Guillen, Fang Goh, Angel Prieto, and Thibault Guillet. "Sound of a nut rolling inside an elastic rubber balloon." Emergent Scientist 3 (2019): 6. http://dx.doi.org/10.1051/emsci/2019005.

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This article studies the sound produced by nuts of different shapes swirling in an elastic rubber balloon. First, the sound is studied experimentally, both in terms of frequency and amplitude. Regarding the frequency components of the sound, we show that they can be divided into two main contributions – one due to the oscillations of the elastic membrane, the other due to the hits of the nut against the balloon – and present models to describe the frequency’s dependence on the main parameters of the system. We analysed the influence of several parameters such as the balloon’s geometry, the nut’s geometry and its mass.

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OHTA, Hiroyuki. "Sound of Rail-Type Rolling Guides with Recirculating Balls. 1st Report. Sound Characteristics." Transactions of the Japan Society of Mechanical Engineers Series C 62, no. 604 (1996): 4651–58. http://dx.doi.org/10.1299/kikaic.62.4651.

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Huang, Chin Jung, and Fa Ta Tsai. "Innovative Design of Applying TRIZ Technology to Safety Control of Low-Cost Electric Rolling Door." Applied Mechanics and Materials 421 (September 2013): 99–103. http://dx.doi.org/10.4028/www.scientific.net/amm.421.99.

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The electric rolling doors are extensively used in Taiwan; however, the accidents of personal injuries caused by electric rolling doors frequently occur. The doors have caused injuries, and even casualties in worst cases. Based on TRIZ contradiction matrix and inventive principles, this study used a laser module, a photoresistor receiver, and mirror reflected refraction to construct a low-cost safety control circuit device. This safety control circuit device can be used for electric rolling doors (3m high and 8m wide) that are commonly used for residential houses. When the electric rolling door is in operation, any objects of the height over 10cm entering or existing in the range of the electric rolling door can be detected by the control device. The actuation of the electric rolling door is then stopped, and an alarm gives out warning sound, so that possible injuries may be prevented. The material cost of this control device is below 2,000 NTD, and this design is cost-effective.

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Wu, Guanchen, Nengyu Yan, Kwang-nam Choi, Hoekyung Jung, and Kerang Cao. "A two-step vibration-sound signal fusion method for weak fault feature detection in rolling bearing systems." Advances in Mechanical Engineering 13, no. 12 (December 2021): 168781402110671. http://dx.doi.org/10.1177/16878140211067155.

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The vibration and sound signals get widely applications in fault diagnosis of rolling bearing systems, but the detection accuracy is unstable at different measuring positions. This paper puts forward a two-step vibration-sound signal fusion method, in which sound signal fusion and vibration-sound signal fusion are executed respectively. The sound signals are fused through weighting to the vibration signal to reduce the influence by measuring positions, and the phase difference is eliminated by a sliding window on the time axis. Then a second fusion between the vibration signal and sound signal is conducted after normalization and superposition, and the performance of two-step fusion is compared with the existing direct fusion. Results show that the two-step fusion provides a larger signal-to-noise ratio, and the amplitudes of characteristic frequencies are also higher. A cascaded bistable stochastic resonance system is applied in the post-processing of the fusion signal to make the signal features more clear, and it is proved that the fault detection effect has an obvious improvement after the whole process. This method provides a new approach for weak fault feature detection in vibration and sound signals, and is of great significance for the maintenance of rolling bearing systems.

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KOIZUMI, Takayuki, Nobutaka TSUJIUCHI, Ryosuke TAMAKI, Yasunari MAEDA, and Tomoyuki IWAGASE. "Prediction of Rolling Tire Sound Radiation Applying Operational Analysis." Proceedings of Conference of Kansai Branch 2002.77 (2002): _12–7_—_12–8_. http://dx.doi.org/10.1299/jsmekansai.2002.77._12-7_.

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HIRATE, Toshiaki, Fumiaki TAKEUCHI, and Tatsuya HIROSE. "217 Detection of Rolling Bearings Faults Using Sound Probe." Proceedings of the Symposium on Evaluation and Diagnosis 2009.8 (2009): 156–58. http://dx.doi.org/10.1299/jsmesed.2009.8.156.

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OHTA, Hiroyuki. "Sound and Vibration Research of Rolling Bearings in Japan." Journal of System Design and Dynamics 7, no. 2 (2013): 95–110. http://dx.doi.org/10.1299/jsdd.7.95.

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Sun, Minjie, Haojie Xu, and Qi An. "Noise calculation method of deep groove ball bearing caused by vibration of rolling elements considering raceway waviness." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 236, no. 8 (October 31, 2021): 4429–39. http://dx.doi.org/10.1177/09544062211045881.

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Raceway waviness error is the main reason to cause rolling elements to vibrate along axial direction and emit noise. In this paper, the mechanical analysis on deep groove ball bearing is carried out. With auto-correlation function, random surface waviness of both inner and outer raceways is simulated. A contact model of rolling elements and raceways considering surface waviness is established. Combining with the theory of acoustic equation, a calculation model is established for the noise caused by vibration of rolling elements and inner ring. The results show that with the decrease of machining accuracy, the noise of rolling elements increases due to axial vibration; with the increase of rotation speed, the noise also increases. Besides, the spectrum of radiation noise of inner raceway with different waviness amplitudes is given. The results indicate that the 3-D waviness on raceway surface has an influence on the vibration and the noise emitted by both rolling elements and inner ring, and provide guidance for sound control in deep groove rolling bearing.

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Shashurin, Aleksandr, Konstantiv Fiev, Viktoriia Vasilyeva, and Andrey Voronkov. "DEVELOPMENT OF THE METHODOLOGY FOR MEASURING NOISE LEVELS IN THE UNDERGROUND ROLLING STOCK." VOLUME 39, VOLUME 39 (2021): 183. http://dx.doi.org/10.36336/akustika202139183.

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This document specifies the methodology for measuring equivalent sound pressure levels in octave frequency bands (in dB rel. 20 μPa), equivalent and maximum A-corrected sound levels (in dB rel. to 20 μPa), generated in the rolling stock in the driver’s cabins and in the passenger rooms of the salons, using acoustic meters - multifunctional analyzers Ecophysics, noise and vibration meters, spectrum analyzers Ecophysics 110A, Oktava 110A Eco, Oktava 110A, Oktava 111, B&K 2250, 2250L, 2270, noise and vibration analyzers ASSISTANT, noise and vibration meters, digital spectrum analyzers Algorithm-05, SVAN979. This methodology is applicable for noise measurements in the driver’s cabins and in the passenger rooms of the rolling stock of both new and old models operated by the underground railway.

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Vasileva, Denitsa. "On the Sound, Produced by a Coin, Rolling in a Balloon." Natural Science and Advanced Technology Education 30, no. 6 (December 28, 2021): 606–12. http://dx.doi.org/10.53656/nat2021-6.06.

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Balloons may be a thing children love playing with, but they also have different interesting physical properties such as the sound that is produced when something is put inside a balloon. The phenomenon of interest of this article is the one of gently rolling a coin in a balloon and exploration of the sound produced by this movement. It turns out that when a coin with edges is put in a balloon and is being rolled a buzzing sound is produced which varies in frequencies depending on the count of edges of the coin. This can be observed in non-laboratory conditions. Not many experiments have been conducted to explore this phenomenon.

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Biermann, Jan, Otto von Estorff, Steffen Petersen, and Holger Schmidt. "Computational Model to Investigate the Sound Radiation from Rolling Tires5." Tire Science and Technology 35, no. 3 (September 1, 2007): 209–25. http://dx.doi.org/10.2346/1.2768608.

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Abstract Tire/road noise is one of the most urgent problems in traffic noise abatement. Therefore, to facilitate the design process of low noise tire/road systems, the development of appropriate computational tools, accounting for the most relevant effects of the noise generation and radiation, seems essential. However, until now no physically based and validated models exist that can be used to determine the sound radiation of rolling vehicle tires within the relevant frequency range and with reasonable accuracy. The numerical model presented here is based on a simulation process that may be split into several analysis steps: computation of the nonlinear stationary rolling process, analysis of the tire dynamics caused by the road roughness, and computation of the sound radiation. This contribution is concerned with the latter part of the analysis procedure. For the sound radiation analysis, the vibrations on the tire surface are extracted from a preceding structural analysis and used as boundary conditions in the acoustic model. The acoustic simulation process is based on the finite/infinite element approach, where an improved variant of the so-called Astley-Leis elements is used to model the sound radiation. The efficiency of the employed numerical methods is somewhat essential, because computational costs generally restrict the frequency range which can be simulated. By evaluating the sound pressure field, it is possible to compare the acoustic performance of specific tire/road systems, and the influence of certain parameters, such as the road texture or the impedance, on the noise radiation can be studied. The current work focuses on the validation of the computational model. Hence, characteristic results from the numerical simulations are compared with corresponding measurement data obtained from different test setups, including standing as well as rolling tires. This paper is dedicated to Em. O. Univ. Professor Dipl.-Ing. Dr. Techn. Dr. H. C. Franz Ziegler on the occasion of his 70th birthday.

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Wunderli, J. M. "A Measurement Procedure for the Sound Emission of Railway Sources Including Source Separation." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 219, no. 3 (May 1, 2005): 125–37. http://dx.doi.org/10.1243/095440905x8835.

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A measurement method for railway noise, which yields spectral source levels for rolling noise including three-dimensional directivity information, is presented. Additionally, emission values for secondary sources as traction noise or aerodynamic noise are gathered. The method is based on two microphones and an intensity probe. The latter is placed in a way to suppress sound intensity stemming from the rail-wheel area and therefore allows secondary sources to be measured that are masked by rolling noise in the overall sound exposure. The method has been tested with a loudspeaker placed on a freight train. Various combinations of train speeds and amplitudes of the loudspeaker signal showed the ability of the method to identify secondary sources that were up to 15 dB below rolling noise with high accuracy. In a further step, traction noise from a high power traction unit was identified and the results were compared with array measurements. The tests proved the method's ability to yield input information for complex railway noise models. The fact that the method can be applied at comparably modest expense in comparison with other elaborated measurement procedures seems to be promising for further applications.

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Igarashi, Teruo, Takafumi Yoshida, and Makoto Murata. "Studies on Rolling Sound. 2nd Report, Effects of Distance of Measuring Microphone on Sound and Sound Radiation Characteristics." Transactions of the Japan Society of Mechanical Engineers Series C 60, no. 574 (1994): 2001–8. http://dx.doi.org/10.1299/kikaic.60.2001.

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Pak, Sun-Young, and Myung-Jin Bae. "Analysis on Rolling Sound of Normal and Faulty Ruditapes Philippinarum." Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology 5, no. 6 (December 31, 2015): 593–600. http://dx.doi.org/10.14257/ajmahs.2015.12.39.

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Oshino, Yasuo, and Hideki Tachibana. "Noise source identification on rolling tires by sound intensity measurement." Journal of the Acoustical Society of Japan (E) 12, no. 2 (1991): 87–92. http://dx.doi.org/10.1250/ast.12.87.

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Li, Juan, Guanghui Zhao, Qingxue Huang, Cunlong Zhou, Zhanjie Zhang, and Lifeng Ma. "Experimental and Simulation Analysis of the Successful Production of Heavy-Gauge Steel Plate by the Clad Rolling Process." International Journal of Nonlinear Sciences and Numerical Simulation 18, no. 5 (July 26, 2017): 403–9. http://dx.doi.org/10.1515/ijnsns-2015-0137.

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AbstractHeavy-gauge Q235 steel plate was successfully roll bonded, and this process was simulated using MARC software. The test results revealed that the chosen ultrasonic testing method satisfies Ⅰ level requirements and the mechanical properties of the materials fully meet the necessary standards. There were uniform ferrite+pearlite microstructures and sound bond areas at the bond interface. Simultaneously, fracture analysis revealed ductile fracture. Using EDS analysis, oxide+MnS inclusions were detected in sample indentations. The MARC simulation showed that after the first rolling pass, little equivalent strain occurred at the center of slab. At the third hot rolling pass, the equivalent strain of the center increased to 0.5. When rolling the last pass, the equivalent strain tended to be uniform in the roll gap region.

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Dal Palù, Doriana, Beatrice Lerma, Luca Actis Grosso, Louena Shtrepi, Mauro Gasparini, Claudia De Giorgi, and Arianna Astolfi. "Sensory evaluation of the sound of rolling office chairs: An exploratory study for sound design." Applied Acoustics 130 (January 2018): 195–203. http://dx.doi.org/10.1016/j.apacoust.2017.09.027.

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Сунцов, A. Suntsov, Ефименко, A. Efimenko, Сунцов, and N. Suntsov. "ON THE MECHANISM OF OCCURRENCE OF THE MAIN TONE OF OSCILLATIONS IN THE ELASTIC ROLLING OF A TYRE." Alternative energy sources in the transport-technological complex: problems and prospects of rational use of 2, no. 2 (December 17, 2015): 599–603. http://dx.doi.org/10.12737/19421.

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The article describes the mechanism of occurrence of basic tone mechanical vibrations of rolling elastic wheels of the car, which is involved in the creation of noise in the cabin of the car. Sound vibrations occur in the rolling elastic wheels. They appear as a result of vertical deformation of the tyre in the contact zone. Oscillations are quasi-harmonic. Period T = 2 t = 2 L / V. the oscillation Frequency is equal to V/L. 2 the Formula to determine the forced vibration frequency of the surface elastic tires can be used in practice.

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Preedawiphat, Pavaret, Asa Prateepasen, and Mai Noipitak. "Influence of Grain Size and Rolling Direction on Stress Measurement by Ultrasonic Surface Wave (Part 2)." Advanced Materials Research 717 (July 2013): 221–26. http://dx.doi.org/10.4028/www.scientific.net/amr.717.221.

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Stress measurement based on the change of ultrasonic surface wave has been accepted to find out residual or existing stress on material. This paper shows the effect of rolling direction and grain size of material on surface wave velocity and energy attenuation. Different grain and rolling direction of material type SS 400, S420 and A516 were selected to test its effect. Three grain sizes of each material were varied by normalizing process at three temperature range (no heating, 850°C, 980°C and 1160°C). Through transmission ultrasonic surface wave, frequencies 2.25 and 5 MHz, were applied and recorded the velocity and attenuation of the response. The results show that rolling direction and grain size slightly effect on attenuation of ultrasonic wave but unaffected on sound velocity. Its outcome was compared with the effect of the material coating.

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LU, Wenbo. "Diagnosing Rolling Bearing Faults Using Spatial Distribution Features of Sound Field." Journal of Mechanical Engineering 48, no. 13 (2012): 68. http://dx.doi.org/10.3901/jme.2012.13.068.

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OHTA, Hiroyuki, and Wan Muhamad Nur ZIKRI. "803 Effects of Lubricants on Sound and Vibration of Rolling Guides." Proceedings of Conference of Hokuriku-Shinetsu Branch 2009.46 (2009): 293–94. http://dx.doi.org/10.1299/jsmehs.2009.46.293.

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Houben, Mark M. J., Armin Kohlrausch, and Dik J. Hermes. "Perception of the size and speed of rolling balls by sound." Speech Communication 43, no. 4 (September 2004): 331–45. http://dx.doi.org/10.1016/j.specom.2004.03.004.

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Sapronova, S., V. Tkachenko, N. Braikovska, and Y. Zub. "SCIENTIFIC APPROACH TO THE METHODS OF INCREASING THE LIFE CYCLE OF WHEELS OF RAILWAY VEHICLES." Collection of scientific works of the State University of Infrastructure and Technologies series "Transport Systems and Technologies" 1, no. 38 (December 24, 2021): 164–72. http://dx.doi.org/10.32703/2617-9040-2021-38-161-15.

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The value of the life cycle of rolling stock wheels is determined by the frequency of maintenance, in the process of which the turning is carried out to restore the profiles of the rolling surfaces, or the replacement of completely worn wheels. Traffic safety depends on the technical condition of the wheels of locomotives and wagons. Maintenance and repair of wheelsets accounts for about 30% of all costs of Ukrzaliznytsia's rolling stock repair units. Wheel repair technologies are based on the complete restoration of wheel profiles by turning, using which, their life cycle is reduced, and costs increase by 20% or more. The railways of Ukraine use an outdated, unreasonable, inefficient system of control over the formation of rolling surfaces in operation. Therefore, there is a need to create a scientifically sound approach to methods of extending the life cycle of the wheels of locomotives and wagons while ensuring the safety of railway rolling stock. According to the proposed scientific approach, the wheel profile is restored to optimal parameters, which provides an extended life cycle of wheelsets. As a result of the developed scientific approach the life cycle of wheel pairs will increase by 15… 25% and the expenses of the railway for their repair will considerably decrease.

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Yeom, Jong Taek, Eun Jeoung Jung, Jeoung Han Kim, Dong Geun Lee, Nho Kwang Park, Seung Sik Choi, and Chong Soo Lee. "Process Design of Profile Ring Rolling for Turbine Diaphragm Using FEM Simulation." Key Engineering Materials 345-346 (August 2007): 1557–60. http://dx.doi.org/10.4028/www.scientific.net/kem.345-346.1557.

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The process design of profile ring rolling for a large-scale turbine diaphragm was made using the calculation method and three dimensional finite element method (FEM). The design criteria are to achieve uniform distributions of strain and temperature, and defect-free profiled ring products. Based on the compression test results of the low alloy steel, deformation processing map was generated using the combination of the dynamic materials model (DMM) and stable or unstable forming criteria. The processing map was used to determine the optimum ring rolling temperature and feed rate of the mandrel. FEM analysis was simulated to predict the formation of rolling defects and deformed shape in the profile ring rolled diaphragm product. Finally, optimum process design to obtain a sound large-scale turbine diaphragm without forming defects was suggested and its validation was made by the comparison between the experimental data and FE analysis results.

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Siciliano, Fulvio. "Mathematical Modelling of Hot Rolling: A Practical Tool to Improve Rolling Schedules and Steel Properties." Materials Science Forum 762 (July 2013): 210–17. http://dx.doi.org/10.4028/www.scientific.net/msf.762.210.

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Most of the commercial metallic materials undergo at least one hot deformation stage during fabrication. Hot deformation processing leads to the production of plates, strips, rods, pipes and other shapes at lower overall cost when compared to the cold deformation/annealing route. Comprehensive study of the metallurgical phenomena during hot deformation has enormous potential application in the control of industrial rolling processes. Understanding of the microstructural and mean flow stress evolution lead to sound steel developments and innovative rolling schedules. The models predict parameters such as grain size, fractional softening (static and dynamic) and strain induced precipitation which are useful to improve rolling schedules. Effects such as incomplete softening and strain accumulation can be easily detected as well as their consequences on the final grain size and mechanical properties. In this regard, special attention must be given to steels, the most important metallic material in terms of history, present and future. In this paper, three hot rolling routes will be analyzed in order to produce high strength linepipe steels. Examples were selected on how the use of modelling during development stage can help to meet mechanical properties, mainly toughness and drop weight tear test. Firstly, it is presented a brief overview on mathematical models applied to hot rolling. Thin slab casting/direct rolling, hot strip mill and plate mill are exemplified in the present work. The development of new steel grades can greatly accelerated with the aid of modelling, which is an useful, low-cost technique.

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Wang, Lidong, Shen Wang, Xingdou Jia, Xiaoling Wang, and Xiaoqiang Yan. "Vibration Energy Coupling Behavior of Rolling Mills under Double Disturbance Conditions." Electronics 12, no. 4 (February 20, 2023): 1061. http://dx.doi.org/10.3390/electronics12041061.

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The operation of the world’s first multimode continuous casting and rolling F3 (3rd finishing mill stand) finishing mill was hampered by frequent vibrations. Mill vibrations were found to be caused by the transmission and coupling of vibration energy flow. In this study, an overall finite element model of the F3 stand is established based on the structural sound intensity method and harmonic response analysis method, and then, the intrinsic energy flow modes and energy flow harmonic response of the F3 stand are obtained. Further, the effects of the steady-state rolling force variation, preload torque variation, rolling force fluctuation, torque fluctuation, and its phase angle difference on the vibration energy flow of the mill are analyzed. Finally, the effects of the mill damping ratio, strip width, and strip modulus on the vibration energy flow under double dynamic load are discussed to reveal the inherent characteristics of the mill vibration energy flow. The results show that the vibration energy flow of the mill increases with the increase of strip modulus, rolling force, and moment fluctuation; the phase angle difference of rolling moment shows a “V” trend change on the vibration energy flow; the change of strip width has a greater effect on the vibration energy flow of the vertical system; and for the damping ratio of 0.01–0.1, the reduction of the vibration energy flow at all excitation frequencies is obvious.

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Bienefeld, Christoph, Eckhard Kirchner, Andreas Vogt, and Marian Kacmar. "On the Importance of Temporal Information for Remaining Useful Life Prediction of Rolling Bearings Using a Random Forest Regressor." Lubricants 10, no. 3 (March 20, 2022): 48. http://dx.doi.org/10.3390/lubricants10030048.

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Rolling bearings are frequently subjected to high stresses within modern machines. To prevent bearing failures, the topics of condition monitoring and predictive maintenance have become increasingly relevant. In order to efficiently and reliably maintain rolling bearings in a predictive manner, an estimate of the remaining useful life (RUL) is of great interest. The RUL prediction quality achieved when using machine learning depends not only on the selection of the sensor data used for condition monitoring, but also on its preprocessing. In particular, the execution of so-called feature engineering has a major impact on prediction quality. Therefore, in this paper, various methods of feature engineering are presented based on rolling–bearing endurance tests and recorded structure-borne sound signals. The performance of these methods is evaluated in the context of a regression-based RUL model. Furthermore, the way in which the quality of RUL prediction can be significantly improved is demonstrated, by adding further processed, time-considering features.

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Journal articles on the topic 'Rolling sounds'

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