Results 61 to 70 of about 531 (180)

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, 2014
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   +1 more source

Damage accumulation near the cold-expanded hole due to high-cycle fatigue by crack compliance method

Fracture and Structural Integrity, 2021
The novel destructive method is implemented for quantitative assessment of fatigue damage accumulation in the stress concentration zone accompanied by residual stress due to cold expansion of the through-thickness hole. Damage accumulation is reached by
Sviatoslav Eleonsky, Yuri Matvienko , Vladimir Pisarev, Michael Zajtsev   +3 more
doaj  

A parametric study of laser spot size and coverage on the laser shock peening induced residual stress in thin aluminium samples

The Journal of Engineering, 2015
Laser Shock Peening is a fatigue enhancement treatment using laser energy to induce compressive Residual Stresses (RS) in the outer layers of metallic components.
M. Sticchi, P. Staron, Y. Sano, M. Meixer, M. Klaus, J. Rebelo-Kornmeier, N. Huber, N. Kashaev   +7 more
doaj   +1 more source

Dynamic Sensing Performance of a Point-Wise Fiber Bragg Grating Displacement Measurement System Integrated in an Active Structural Control System

Sensors, 2011
In this work, a fiber Bragg grating (FBG) sensing system which can measure the transient response of out-of-plane point-wise displacement responses is set up on a smart cantilever beam and the feasibility of its use as a feedback sensor in an active ...
Chien-Ching Ma, Heng-Tseng Liao, Kuo-Chih Chuang   +2 more
doaj   +1 more source

Characterization on crack propagation of nuclear graphite under three-point bending

Nuclear Materials and Energy, 2019
The fracture properties of graphite produced in China, named as CLG, were studied by performing three-point bending tests on center-notched beams. The load-deflection (P-δ) curves and load-crack mouth opening displacement (P-CMOD) curves of the beams in ...
Yuxiang Tang, Hongniao Chen
doaj   +1 more source

INVESTIGATION OF THE MECHANICAL INTERACTIONS AT THE INTERFACE OF WOOD-CEMENT COMPOSITES BY MEANS OF ELECTRONIC SPECKLE PATTERN INTERFEROMETRY

BioResources, 2012
This study investigates the bonding behaviour of Norway spruce wood strands to a surrounding cement matrix. Effects of wood swelling and shrinking during cement curing were studied by using strands of various thicknesses.
Stephan Frybort,, Raimund Mauritz,, Alfred Teischinger,, Ulrich Müller   +3 more
doaj  

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

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  

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