scholarly journals Real-time dual-sensitive shearography for simultaneous in-plane and out-of-plane strain measurements

2019 ◽  
Vol 27 (3) ◽  
pp. 3276 ◽  
Author(s):  
Jie Dong ◽  
Shengjia Wang ◽  
Min Lu ◽  
Martin Jakobi ◽  
Zhanwei Liu ◽  
...  
Keyword(s):  
Real Time ◽  
Plane Strain ◽  
Strain Measurements ◽  
Out Of Plane

Study on Clinical Application of Different Ultrasound-Guided Planar Techniques in Minimally Invasive Percutaneous Nephrolithotomy

2021 ◽  
pp. 155335062199779
Author(s):  
Difu Fan ◽  
Leming Song ◽  
Monong Li ◽  
Chunxiang Luo ◽  
Xiaohui Liao ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Real Time ◽  
Clinical Application ◽  
Short Axis ◽  
Ultrasound Guided ◽  
Out Of Plane ◽  
Minimally Invasive Percutaneous Nephrolithotomy ◽  
Plane Group ◽  
Plane Technique ◽  
Guided Puncture

Objective. The objective is to explore the clinical application value of ultrasound long- and short-axis planar technology in real-time guided puncture in minimally invasive percutaneous nephrology. Methods. The clinical data of 80 patients undergoing real-time ultrasound-guided minimally invasive percutaneous nephrolithotomy from September 2018 to October 2019 were analyzed. The patients were randomly divided into 2 groups with different ultrasound-guided puncture techniques, long-axis in-plane technique and short-axis out-of-plane technique. Results. Minimally invasive percutaneous nephrolithotomies under real-time ultrasound guidance were successfully completed in both groups of patients. The success rate of the first puncture in the short-axis out-of-plane group was significantly higher than that in the long-axis in-plane group, and the differences were statistically significant ( P <.05); the total puncture time in the short-axis out-of-plane group was significantly less than the long-axis in-plane group, and the differences were statistical significance ( P <.05); there was no significant difference in the single-stage stone removal rate, total percutaneous renal channels, total hospital stay, and rate of complications by the Clavien classification between the 2 groups ( P > .05). Conclusion. Ultrasound long-axis and short-axis planar technologies can achieve good clinical application results in real-time guided puncture to establish percutaneous renal channels during minimally invasive percutaneous nephrolithotomy. Compared with the long-axis in-plane technique, the short-axis out-of-plane technique can shorten the puncture time and improve the success rate of the first puncture.

Modified temporal-phase-unwrapping method for measuring in real time the out-of-plane displacements of the tympanic membrane of Mongolian Gerbil

Optik ◽  
2008 ◽  
Vol 119 (16) ◽  
pp. 783-787 ◽  
Author(s):  
R.A. Martínez-Celorio ◽  
Joris J.J. Dirckx ◽  
Jan A.N. Buytaert ◽  
Luis Martí-López ◽  
Wim Decraemer
Keyword(s):  
Tympanic Membrane ◽  
Real Time ◽  
Mongolian Gerbil ◽  
Phase Unwrapping ◽  
Temporal Phase ◽  
Out Of Plane

scholarly journals Out-of-plane strain effect on silicon-based flexible FinFETs

2015 ◽  
Author(s):  
Mohamed T. Ghoneim ◽  
Nasir Alfaraj ◽  
Galo A. Torres Sevilla ◽  
Hossain M. Fahad ◽  
Muhammad M. Hussain
Keyword(s):  
Plane Strain ◽  
Strain Effect ◽  
Out Of Plane ◽  
Silicon Based

Out-of-Plane and In-Plane Strain Measured by Shearography

1996 ◽  
pp. 649-659
Author(s):  
W. Steinchen ◽  
M. Schuth ◽  
L. X. Yang ◽  
G. Kupfer
Keyword(s):  
Plane Strain ◽  
Out Of Plane

Curvature and Out-of-Plane-Strain for Generalized Plane Strain

1972 ◽  
Vol 39 (3) ◽  
pp. 827-829 ◽  
Author(s):  
V. J. Parks
Keyword(s):  
Plane Strain ◽  
Cross Section ◽  
Central Region ◽  
Transverse Cross Section ◽  
Infinite Length ◽  
Out Of Plane ◽  
Plane Solution ◽  
Generalized Plane Strain

Out-of-plane strains and stresses are determined using reciprocity for the central region of very long bars (approaching infinite length) of uniform transverse cross section subjected to the same in-plane loads on every cross section. The loading explicitly specifies no end loads on the bars. The results are obtained without recourse to the in-plane solution. Conversely the end force and moment are determined for the case where the out-of-plane strain is zero.

A Real-Time DSPI System for Measuring Surface Deformation in Clamped Bolted Joints

2008 ◽  
Author(s):  
Aidong Meng ◽  
Sayed A. Nassar
Keyword(s):  
Real Time ◽  
Vibration Isolation ◽  
Surface Deformation ◽  
Plane Surface ◽  
Speckle Pattern ◽  
The Real ◽  
Time Deformation ◽  
Out Of Plane ◽  
Phase Data ◽  
Set Up

A Digital Speckle Pattern Interferometry (DSPI) system is developed for the real-time measuring and monitoring the out-of-plane surface deformation around tightened threaded fasteners that are used to clamp bolted assemblies. Spatial phase shifting is employed to quantitatively determine the distribution of phase data by introducing a spatial carrier fringe pattern to the speckle interferogram. This is achieved by leading the object and reference beams to two separate apertures. The configuration is also suitable for collecting the real-time deformation during bolt tightening. The experimental DSPI system is set-up with optical components on a vibration-isolation table. A Matlab software is developed for the image acquisition and phase data calculation, which yields the out-of-plane surface deformation caused by the bolt preload. An aluminum joint is used with an M12 steel fastener. For miniature screw application, however, a plastic joint is used for collecting data.

A Novel Fatigue Crack Monitoring Method Based on Nonlinear Dynamic Characteristics of Strain

2019 ◽  
Vol 20 (01) ◽  
pp. 2050016
Author(s):  
Dong Yang ◽  
Dan Li ◽  
K. S. C. Kuang
Keyword(s):  
Fatigue Crack ◽  
Crack Initiation ◽  
Crack Propagation ◽  
Real Time ◽  
Nonlinear Dynamic ◽  
Crack Opening ◽  
Steel Structures ◽  
Monitoring Method ◽  
Strain Measurements ◽  
Crack Monitoring

This paper presents a novel fatigue crack monitoring method for steel specimens based on the smoothness priors method (SPM) and Tsallis entropy (TE) of strain measurements. The aim of the study is to detect initiation of a crack in steel specimens and subsequently to monitor its propagation under the fatigue load, based on real-time strain measurements. The nonlinear dynamic response of the structure was exploited since it degrades due to the initiation and subsequent propagation of the crack under the external dynamic excitation. The proposed method was experimentally validated. Here, the SPM is applied to decomposing the structural strain response into a nearly-stationary (NS) component and a low frequency aperiodic trend (LFAT) component. Features associated with crack initiation can be extracted from the NS component. The LFAT component, on the other hand, can be used to identify crack propagation. To tackle the singularity of the structural responses associated with a crack, the TE of the NS component was used in detection and monitoring of the crack in the steel specimen. Two other techniques, namely, acoustic emission (AE) sensor and crack opening displacement (COD) gauge were used for the purpose of calibration and comparison. The results show remarkable resemblance in terms of crack initiation and propagation identification exhibited by all three types of sensors, highlighting the potential of the proposed method for real-time detection and subsequent monitoring of crack propagation in steel structures.

B23-O-01Peculiar Domains by Local Out-of- Plane Strain in Chemically Modified Bismuth Ferrite Thin Films

Microscopy ◽  
2015 ◽  
Vol 64 (suppl 1) ◽  
pp. i53.1-i53
Author(s):  
Si-Young Choi ◽  
Sung-Dae Kim ◽  
Jungho Ryu
Keyword(s):  
Thin Films ◽  
Plane Strain ◽  
Bismuth Ferrite ◽  
Chemically Modified ◽  
Out Of Plane ◽  
Ferrite Thin Films

Out-of-Plane Strain Induced in a Moiré Superstructure of Monolayer MoS2and MoSe2on Au(111)

Small ◽  
2017 ◽  
Vol 13 (31) ◽  
pp. 1700748 ◽  
Author(s):  
Satoshi Yasuda ◽  
Ryosuke Takahashi ◽  
Ryo Osaka ◽  
Ryota Kumagai ◽  
Yasumitsu Miyata ◽  
...  
Keyword(s):  
Plane Strain ◽  
Out Of Plane
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