Results 101 to 110 of about 6,641 (217)

A Full-Field Wideband Modal Testing Method for Turbine Blades

Aerospace
In order to accurately measure the low- and high-order modes of turbine blades, this study proposes a method that integrates piezoelectric ceramic excitation with time-averaged electronic speckle pattern interferometry (TA-ESPI).
Yinhang Ma, Long Zou, Kangjiang Lv, Yadong Zhou, Dong Jiang   +4 more
doaj   +1 more source

Laser interferometric measurement of ion electrode shape and charge exchange erosion [PDF]

A projected fringe profilometry system was applied to surface contour measurements of an accelerator electrode from an ion thrustor. The system permitted noncontact, nondestructive evaluation of the fine and gross structure of the electrode.
Macrae, Gregory S., Mercer, Carolyn R.
core   +1 more source

A Targetless Method for Simultaneously Measuring Three-Degree-of-Freedom Angular Motion Errors with Digital Speckle Pattern Interferometry. [PDF]

Sensors (Basel), 2023
Shi L, Wu S, Yan M, Niu H.
europepmc   +1 more source

The effect of low-cycle fatigue on evolution of fracture mechanics parameters in residual stress field caused by cold hole expansion

Fracture and Structural Integrity, 2018
Localized displacement measurements based on electronic speckle-pattern interferometry are used to obtain crack mouth opening displacement (CMOD), stress intensity factor (SIF) and T-stress values during crack growth around cold-expanded holes.
Yury Matvienko, Vladimir Pisarev, Svyatoslav Eleonsky   +2 more
doaj  

Progress in strain monitoring of tapestries

, 2008
This paper reports interdisciplinary research between conservators and engineers designed to enhance the long-term conservation of tapestries (tapestry-weave hangings) on longterm display.
Chambers, A.R., Dulieu-Barton, J.M., Eastop, D., Khennouf, D., Lennard, F., Ye, C.C.   +5 more
core  

Cálculo de la incertidumbre estándar mediante la técnica de Monte Carlo para la medición de la topografía y del campo de desplazamiento mediante ESPI

Nova Scientia, 2012
La ventaja del uso de las técnicas interferométricas basados en el patrón de moteado ESPI (electronic speckle pattern interferometry) es única ya que se pueden hacer mediciones muy precisas de los campos de desplazamientos que ocurren en la superficie de
Jorge Ramón Parra-Michel, Amalia Martínez García   +1 more
doaj  

Experimental Investigations of the Dental Filling Materials: Establishing Elastic Moduli and Poisson's Ratios. [PDF]

Materials (Basel), 2023
Száva DT, Száva I, Vlase S, Száva A.
europepmc   +1 more source

ENDOSCOPIC ELECTRONIC SPECKLE PATTERN INTERFEROMETRY

THE JOURNAL OF JAPAN SOCIETY FOR LASER SURGERY AND MEDICINE, 1985
Motoki Yonemura, Shigeru Hagihara, Tsuyoshi Nishisaka   +2 more
openaire   +2 more sources

Evaluation of pitting corrosion by dynamic speckle pattern analysis. [PDF]

Sci Rep, 2023
Pedram O, Jamali R, Abbasian V, Rad VF, Darafsheh A, Khamedi R, Poursaeidi E, Moradi AR.   +7 more
europepmc   +1 more source

PULSED ELECTRONIC SPECKLE PATTERN INTERFEROMETRY (ESPI)

, 1999
"A novel Electronic Speckle Pattern Interferometry, ESPI, technique is presented in this work. The technique consist of an out-of-plane interferometer which incorporates a specially fabricated computer-generated hologram. This hologram allows us to achieve spatial phase stepping and therefore analysis of transient phenomena becomes feasible.
openaire   +1 more source