Results 91 to 100 of about 168,541 (274)

Electronic Speckle Pattern Interferometry (ESPI) NDE of cracks in pressure vessels with FEA modelling

, 1997
Includes bibliographical references.This dissertation describes the results of an attempt to simulate the Electronic Speckle Pattern Interferometric fringe patterns observed around a crack or combination of cracks in a pressure vessel by finite element ...
Myles, John Robert
core  

PCA-enhanced Speckle Interferometry with Bicubic Interpolation at the OAN-SPM México

The Astronomical Journal
We present an improved methodology for the reduction and analysis of speckle interferometry data, based on observations obtained with the 2.1 m telescope at the Observatorio Astronómico Nacional in Sierra San Pedro Mártir, México.
C. A. Guerrero, D. O. Ochoa, B. Hernández-Valencia, T. Benadalid, I. A. Peralta-Mendoza, E. Romero Hernández, F. A. García-Castillo, S. Ayala, J. E. Pérez-León, F. J. Tamayo, A. Avilés, E. Sánchez, J. H. Castro-Chacón, A. Bautista-Hernández, M. Reyes-Ruiz, E. G. Pérez-Tijerina   +15 more
doaj   +1 more source

Dynamic deformation analysis of aluminum alloy 5083 using electronic speckle pattern interferometry

Journal of Materials Research and Technology
In this study, we propose a phase-analysis algorithm that operates on a single contour image obtained via electronic speckle pattern interferometry (ESPI) to investigate non-uniform deformation in Al–Mg alloys.
Yuto Takanezawa, Sanichiro Yoshida, Tomohiro Sasaki   +2 more
doaj   +1 more source

Artificial Neural Networks Application in Modal Analysis of Tires

Measurement Science Review, 2013
The paper deals with the application of artificial neural networks (ANN) to tires’ own frequency (OF) prediction depending on a tire construction. Experimental data of OF were obtained by electronic speckle pattern interferometry (ESPI).
Koštial P., Jančíková Z., Bakošová D., Valíček J., Harničárová M., Špička I.   +5 more
doaj   +1 more source

Digital Shearing Speckle Pattern Interferometry Based on Rochon Prism and Its Application

Applied Sciences, 2019
This paper presents improved digital shearing speckle pattern interferometry based on Rochon Prism. The advantage of this method is that it avoids the shadow noise caused by transmission light, which improves the shearography accuracy.
Xu Wang, Zhan Gao, Chenjia Gao, Jieming Zhao, Yuhao Niu, Zihui Liu, Yuan Zhang, Yuchen Liu   +7 more
doaj   +1 more source

FIB-DIC Residual Stress Evaluation in Shot Peened VT6 Alloy Validated by X-ray Diffraction and Laser Speckle Interferometry. [PDF]

Nanomaterials (Basel), 2022
Somov PA, Statnik ES, Kan Y, Pisarev VS, Eleonsky SI, Ozherelkov DY, Salimon AI.   +6 more
europepmc   +1 more source

Critical Review of Brazil Disk Techniques for Tensile Strength Characterization With an Emphasis on High Explosive Materials

Propellants, Explosives, Pyrotechnics, Volume 51, Issue 6, Page 862-875, June 2026.
ABSTRACT Mechanical properties are a critical performance metric for many high explosive (HE) materials and tensile strength properties are particularly important. Direct tensile measurements using dogbone shaped samples are the gold standard but they have the disadvantage that they are fairly large and require samples machined from billets.
Paul B. Mirkarimi
wiley   +1 more source

PULSED ELECTRONIC SPECKLE PATTERN INTERFEROMETRY (ESPI) [PDF]

, 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.
Bernardino Barrientos
core  

Advanced methods for assessing sealing ability of valve seals

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2017
The paper deals with the processes that arise when sealing valve contact surfaces. A mathematical model of elastic contact is proposed that allows solving the problem of deformation of contacting surfaces with allowance for their rigidity by solving a ...
Yu. I. Kondrashov, R. N. Sergeev
doaj   +1 more source

Feasibility of Crosshole Seismic Tomography for Monitoring In Situ CO2 Mineral Storage in Basalts: A Rock Physics‐ and Seismic Modeling Study

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract In situ CO2 mineral storage is gaining increasing attention as a carbon capture and storage (CCS) technology to reduce anthropogenic CO2 emissions. So far, in situ CO2 mineral storage projects have been monitored predominantly using fluid‐ and isotope geochemical methods.
Jonas Simon Junker, Hansruedi Maurer, Alba Zappone, Sin‐Mei Wu, Anne Obermann   +4 more
wiley   +1 more source