A Sensor for Laser Ultrasonic Measurement of Elastic Properties of Moving Paper

Ridgway, Paul; Russo, Richard E.; Lafond, E.; Jackson, Ted; Zhang, X.

doi:10.1063/1.1916875

Cited by 8 publications

(6 citation statements)

References 9 publications

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“…The application of laser-induced surface acoustic waves (SAWs) is a noncontact, nondestructive method that has been widely applied in industry, for example, to analyze the surface structure, plainness, coating layer thickness, and elastic properties of metallic specimens [23][24][25][26][27][28][29]. Laser-induced SAWs have started to attract attention for medical applications in the past decade.…”

Section: Introductionmentioning

confidence: 99%

Quantitative elasticity measurement of urinary bladder wall using laser-induced surface acoustic waves

Guan

Zhang

et al. 2014

Biomed. Opt. Express

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Abstract:The maintenance of urinary bladder elasticity is essential to its functions, including the storage and voiding phases of the micturition cycle. The bladder stiffness can be changed by various pathophysiological conditions. Quantitative measurement of bladder elasticity is an essential step toward understanding various urinary bladder disease processes and improving patient care. As a nondestructive, and noncontact method, laserinduced surface acoustic waves (SAWs) can accurately characterize the elastic properties of different layers of organs such as the urinary bladder. This initial investigation evaluates the feasibility of a noncontact, all-optical method of generating and measuring the elasticity of the urinary bladder. Quantitative elasticity measurements of ex vivo porcine urinary bladder were made using the laser-induced SAW technique. A pulsed laser was used to excite SAWs that propagated on the bladder wall surface. A dedicated phase-sensitive optical coherence tomography (PhS-OCT) system remotely recorded the SAWs, from which the elasticity properties of different layers of the bladder were estimated. During the experiments, series of measurements were performed under five precisely controlled bladder volumes using water to estimate changes in the elasticity in relation to various urinary bladder contents. The results, validated by optical coherence elastography, show that the laser-induced SAW technique combined with PhS-OCT can be a feasible method of quantitative estimation of biomechanical properties. 1768-1778 (1999). 3. T. Watanabe, S. Omata, J. Z. Lee, and C. E. Constantinou, "Comparative analysis of bladder wall compliance based on cystometry and biosensor measurements during the micturition cycle of the rat," Neurourol. Urodyn. 16(6), 567-581 (1997). 4. A. Elbadawi, S. V. Yalla, and N. M. Resnick, "Structural basis of geriatric voiding dysfunction. IV. Bladder outlet obstruction," J. Urol. 150(5 Pt 2), 1681-1695 (1993). 5. L. M. Liao and W. Schaefer, "Cross-sectional and longitudinal studies on interaction between bladder compliance and outflow obstruction in men with benign prostatic hyperplasia," Asian J. Androl. 9(1), 51-56 (2007 418-426 (2012). 10. K. Sabanathan, H. M. Duffin, and C. M. Castleden, "Urinary tract infection after cystometry," Age Ageing 14(5), 291-295 (1985). 11. N. N. Bhatia and A. Bergman, "Cystometry: unstable bladder and urinary tract infection," Br. J. Urol. 58(2), 134-137 (1986) 21-29 (1994). 54. F. F. Chai and T. T. Wu, "Determination of anisotropic elastic constants using laser-generated surface waves," J. ©2014 Optical Society of AmericaAcoust. Soc. Am. 95(6), 3232-3241 (1994

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Section: Introductionmentioning

confidence: 99%

Quantitative elasticity measurement of urinary bladder wall using laser-induced surface acoustic waves

Guan

Zhang

et al. 2014

Biomed. Opt. Express

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“…Then it is assumed that chosen in such a way elasticity parameters correspond to the real values. Obtained elasticity properties are for the whole specimen but not of the particular layer of one [2], [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Identification of prints elastic parameters

Grigaliūnienė

Turla

Ragauskas

et al. 2014

mech

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“…The dispersion curve obtained from the wavelet transform of the signal was compared to the material dispersion curve calculated using the material constants and both the curves were found to be in good agreement. Ridgway et al [2003] estimated the flexural rigidity of paper web running at 5000 ft/min by measuring the frequency dependence of the phase velocity of A 0 mode lamb waves. While this method worked for fine paper grades, the low frequency signal amplitude from paperboard was found to be insufficient for making accurate measurements.…”

Section: Introductionmentioning

confidence: 99%

Behavior of paper on a high speed conveyor subjected to air jet impingement: a method for estimating bending stiffness

Ramasubramanian

Venditti

Katuri

2007

JOMMS

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Stiffness based sorting of mixed paper waste at high speed is desirable for sorting board, cardstock, and paper from each other for efficient recycling. We propose a quick, non-contact method for measuring the relative stiffness of paper samples moving on a conveyor at high speeds. The method consists of impinging an air jet on a moving paper sample while it is crossing a gap during transfer from one conveyor belt to another. The deflection caused by the impinging air jet can be measured and used to categorize different grades of paper. In this paper, we report results from a simulation of the proposed method using a finite element model. Influence of conveyor speed, sample orientation and nozzle pressure is studied using the model. Results indicate that the stiffness estimation has sufficient resolution to distinguish between board and paper grades at high conveyor speeds.

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A Sensor for Laser Ultrasonic Measurement of Elastic Properties of Moving Paper

Cited by 8 publications

References 9 publications

Quantitative elasticity measurement of urinary bladder wall using laser-induced surface acoustic waves

Quantitative elasticity measurement of urinary bladder wall using laser-induced surface acoustic waves

Identification of prints elastic parameters

Behavior of paper on a high speed conveyor subjected to air jet impingement: a method for estimating bending stiffness

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