Experimental analysis of the vibrational characteristics of the human skull

Khalil, Tawfik B.; Viano, David C.; Smith, David

doi:10.1016/0022-460x(79)90679-5

Cited by 64 publications

(43 citation statements)

References 8 publications

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“…30,31 However, some regularity can be observed here. Bekesy was of the opinion that -at low frequencies -the skull behaves like a rigid body, i.e.…”

Section: Mechanical Properties Of the Skullmentioning

confidence: 63%

Hearing and stomatognathic system: Searching for a link

Baliński¹,

Morawska-Kochman²,

Bochnia³

2017

Dent. Med. Probl.

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Acoustic vibrations reach the inner ear fluids in 3 integral ways: through the air, bone, and soft tissue. The final stimulation of the hearing receptor is recognized as the result of various interactions appearing between them. Air conduction is best described as the most efficient mode of auditory stimulation. Soft tissue and bone conduction (including dentaural hearing), being frequently underestimated in the complicated process of hearing, are still less examined. Clinical observations prove that dental health may have a direct influence on hearing. Additionally, hearing improvement after dental treatment is of a permanent nature.This review presents a hypothesis and supporting literature review that dental disorders may contribute to disturbances in the excitation and/or the transmission of vibrations through the bone to the hearing receptor. Dissociation in the relationship between stimuli reaching the cochlea simultaneously in 3 modes may have a negative impact on hearing acuity.

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“…30,31 However, some regularity can be observed here. Bekesy was of the opinion that -at low frequencies -the skull behaves like a rigid body, i.e.…”

Section: Mechanical Properties Of the Skullmentioning

confidence: 63%

Hearing and stomatognathic system: Searching for a link

Baliński¹,

Morawska-Kochman²,

Bochnia³

2017

Dent. Med. Probl.

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“…Håkansson et al [4] found the lowest resonance frequency to be 0.97 kHz as the average of six human skulls in vivo. Khalil et al [5] reported the first resonance frequency at 1.38 kHz and 1.64 kHz for the male and female dry skulls, respectively. Due to differences in geometry, mechanical properties, and other individual differences between the experimental subjects, the results would differ between the studies as well as between the simulated results presented here.…”

Section: Discussionmentioning

confidence: 99%

“…The resonance frequencies of the human skull have been tested on dry skulls [1], [3], [5], [10]. Therefore, a large amount of data could be used to validate the human skull model.…”

Section: Validation and Measurement Setupmentioning

confidence: 99%

“…Although there have been many investigations of the BC skull transmission [1], [2], [9], [10], several issues are still unresolved. Even if many studies of the skull with many measurement methods have been reported, the importance of the transmission routes for BC sound is still not known [1], [3], [5], [10]. Considered as the main medium of the sound wave vibration, the skull transmits the BC sound from the source to the cochlea.…”

Section: Introductionmentioning

confidence: 99%

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Simulation of bone-conducted sound transmission in a three-dimensional finite-element model of a human skull

Chang¹,

Kim²,

Stenfelt³

2015

AIP Conference Proceedings

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“…Previous studies have shown that SHPB testing has three major flaws associated with it [12][13][14][15][16][17][18] . The first and most significant one is the material inertial effect, which shows up in the high strain rate mechanical response of a biomaterial specimen as an initial spike.…”

Section: Background On Split-hopkinson Pressure Bar (Shpb) and Internmentioning

confidence: 99%

A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials

Prabhu

Whittington

Patnaik

et al. 2015

JoVE

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This study offers a combined experimental and finite element (FE) simulation approach for examining the mechanical behavior of soft biomaterials (e.g. brain, liver, tendon, fat, etc.) when exposed to high strain rates. This study utilized a Split-Hopkinson Pressure Bar (SHPB) to generate strain rates of 100-1,500 sec -1. The SHPB employed a striker bar consisting of a viscoelastic material (polycarbonate). A sample of the biomaterial was obtained shortly postmortem and prepared for SHPB testing. The specimen was interposed between the incident and transmitted bars, and the pneumatic components of the SHPB were activated to drive the striker bar toward the incident bar. The resulting impact generated a compressive stress wave (i.e. incident wave) that traveled through the incident bar. When the compressive stress wave reached the end of the incident bar, a portion continued forward through the sample and transmitted bar (i.e. transmitted wave) while another portion reversed through the incident bar as a tensile wave (i.e. reflected wave). These waves were measured using strain gages mounted on the incident and transmitted bars. The true stress-strain behavior of the sample was determined from equations based on wave propagation and dynamic force equilibrium. The experimental stress-strain response was three dimensional in nature because the specimen bulged. As such, the hydrostatic stress (first invariant) was used to generate the stress-strain response. In order to extract the uniaxial (one-dimensional) mechanical response of the tissue, an iterative coupled optimization was performed using experimental results and Finite Element Analysis (FEA), which contained an Internal State Variable (ISV) material model used for the tissue. The ISV material model used in the FE simulations of the experimental setup was iteratively calibrated (i.e. optimized) to the experimental data such that the experiment and FEA strain gage values and first invariant of stresses were in good agreement. Video LinkThe video component of this article can be found at

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Experimental analysis of the vibrational characteristics of the human skull

Cited by 64 publications

References 8 publications

Hearing and stomatognathic system: Searching for a link

Hearing and stomatognathic system: Searching for a link

Simulation of bone-conducted sound transmission in a three-dimensional finite-element model of a human skull

A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials

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