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Applied Sciences
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Contact Mechanics, Wear and Acoustic Waves
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Contact Mechanics, Wear and Acoustic Waves

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Acoustics and Vibrations".

Deadline for manuscript submissions: closed (30 April 2021) | Viewed by 8677

Special Issue Editor

Dr. Thomas Dehoux

E-Mail Website
Guest Editor
Univ Lyon, Univ Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France
Interests: optoacoustics; cancer mechanics; biobased metamaterials; contact mechanics; thermal imaging; rheology and tribology of cells

Special Issue Information

Dear Colleagues,

Since the pioneering works in the 1970s, acoustic waves have been widely used to investigate contact mechanics and wear. Acoustic waves enable the non-destructive evaluation of interfaces, through the transmission of waves across or the propagation of waves along contacting surfaces. The wide range of frequencies makes it possible to probe structures at millimeter to nanometer scales. Such approaches find applications in various fields, from the evaluation of rolling contacts in wheel–rail interactions, non-linear propagation in the vicinity of cracks, or the investigation of biological implants and cell adhesion.

We are inviting the submission of manuscripts to this Special Issue on “Wear, Contact Mechanics and Acoustic Waves.” This Special Issue aims to cover non-destructive testing, non-linear acoustics, guided and interfacial waves, biological applications, modelling, and relevant multiphysics. We welcome research articles as well as review articles on the significant recent progress in these fields.

Dr. Thomas Dehoux
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Tribology
  • Contact mechanics
  • Wear
  • Ultrasound
  • Non-linear acoustics
  • Picosecond ultrasonics, laser ultrasonics, Brillouin spectroscopy and other optoacoustic techniques
  • Surface, interfacial, and guided waves
  • Friction
  • Lubrication
  • Biological joints and cell adhesion

Published Papers (3 papers)

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Research

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14 pages, 3350 KiB  
Article
Estimation via Laser Ultrasonics of the Ultrasonic Attenuation in a Polycrystalline Aluminum Thin Plate Using Complex Wavenumber Recovery in the Vicinity of a Zero-Group-Velocity Lamb Mode
by Guqi Yan, Samuel Raetz, Jean-Philippe Groby, Aroune Duclos, Alan Geslain, Nikolay Chigarev, Vitalyi E. Gusev and Vincent Tournat
Appl. Sci. 2021, 11(15), 6924; https://0-doi-org.brum.beds.ac.uk/10.3390/app11156924 - 28 Jul 2021
Cited by 2 | Viewed by 1655
Abstract
In this paper, we present a method to recover the complex wavenumber dispersion relations using spatial Laplace transform from experimental spatiotemporal signals measured by laser ultrasonic technique. The proposed method was applied on zero-group-velocity Lamb modes in order to extract the ultrasonic attenuation [...] Read more.
In this paper, we present a method to recover the complex wavenumber dispersion relations using spatial Laplace transform from experimental spatiotemporal signals measured by laser ultrasonic technique. The proposed method was applied on zero-group-velocity Lamb modes in order to extract the ultrasonic attenuation in a polycrystalline aluminum plate of about 70 μm thickness. The difference between the experimental and theoretical Laplace Fourier transforms was minimized in the least square sense to extract the complex amplitudes and complex wavenumbers of the modes at about 40 MHz. The experimental results were compared to values reported in the literature that were measured by other means and those estimated by using the quality factor extracted from a single temporal signal. Full article
(This article belongs to the Special Issue Contact Mechanics, Wear and Acoustic Waves)
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20 pages, 3574 KiB  
Article
Linear and Nonlinear Normal Interface Stiffness in Dry Rough Surface Contact Measured Using Longitudinal Ultrasonic Waves
by Saeid Taghizadeh and Robert Sean Dwyer-Joyce
Appl. Sci. 2021, 11(12), 5720; https://0-doi-org.brum.beds.ac.uk/10.3390/app11125720 - 20 Jun 2021
Cited by 4 | Viewed by 2681
Abstract
When two rough surfaces are loaded together contact occurs at asperity peaks. An interface of solid contact regions and air gaps is formed that is less stiff than the bulk material. The stiffness of a structure thus depends on the interface conditions; this [...] Read more.
When two rough surfaces are loaded together contact occurs at asperity peaks. An interface of solid contact regions and air gaps is formed that is less stiff than the bulk material. The stiffness of a structure thus depends on the interface conditions; this is particularly critical when high stiffness is required, for example in precision systems such as machine tool spindles. The rough surface interface can be modelled as a distributed spring. For small deformation, the spring can be assumed to be linear; whilst for large deformations the spring gets stiffer as the amount of solid contact increases. One method to measure the spring stiffness, both the linear and nonlinear aspect, is by the reflection of ultrasound. An ultrasonic wave causes a perturbation of the contact and the reflection depends on the stiffness of the interface. In most conventional applications, the ultrasonic wave is low power, deformation is small and entirely elastic, and the linear stiffness is measured. However, if a high-powered ultrasonic wave is used, this changes the geometry of the contact and induces nonlinear response. In previous studies through transmission methods were used to measure the nonlinear interfacial stiffness. This approach is inconvenient for the study of machine elements where only one side of the interface is accessible. In this study a reflection method is undertaken, and the results are compared to existing experimental work with through transmission. The variation of both linear and nonlinear interfacial stiffnesses was measured as the nominal contact pressure was increased. In both cases interfacial stiffness was expressed as nonlinear differential equations and solved to deduce the contact pressure-relative surface approach relationships. The relationships derived from linear and nonlinear measurements were similar, indicating the validity of the presented methods. Full article
(This article belongs to the Special Issue Contact Mechanics, Wear and Acoustic Waves)
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Review

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13 pages, 3101 KiB  
Review
A Review of the Vibration Arthrography Technique Applied to the Knee Diagnostics
by Sophie de Tocqueville, Mihaela Marjin and Michal Ruzek
Appl. Sci. 2021, 11(16), 7337; https://0-doi-org.brum.beds.ac.uk/10.3390/app11167337 - 10 Aug 2021
Cited by 3 | Viewed by 3263
Abstract
When a joint undergoes a range of motion, its constituents rub against each other, causing friction and thus vibrations. The vibration arthrography (VAG) technique consists of detecting, recording, and processing those vibrations to diagnose disorders. This non-invasive method could be an alternative to [...] Read more.
When a joint undergoes a range of motion, its constituents rub against each other, causing friction and thus vibrations. The vibration arthrography (VAG) technique consists of detecting, recording, and processing those vibrations to diagnose disorders. This non-invasive method could be an alternative to the currently used arthroscopy or X-rays. It has been revealed to be as accurate as these methods in terms of detecting pathologies such as osteoarthritis (OA). Moreover, vibrational analysis has highlighted some physiological signals associated with the displacement of knee joint components. Thus, vibroarthrography provides further understanding of the internal mechanisms of the knee joint. This paper aims to examine the research progress on the use of this vibration arthrography technique in diagnosing knee disorders. Full article
(This article belongs to the Special Issue Contact Mechanics, Wear and Acoustic Waves)
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