Smooth spline-like finite-element differentiation of full-field experimental data over arbitrary geometry

Segalman, Daniel J.; Woyak, D. B.; Rowlands, R. E.

doi:10.1007/bf02326046

Cited by 61 publications

(22 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, the value of the smoothing parameter e was determined in each case according to the approach suggested in Ref. 31. Representative values of e used here range from 1.0e-5 to 1.0e-4.…”

Section: Resultsmentioning

confidence: 99%

Fracture process zone analysis of concrete using moiré interferometry

Feng

Rowlands

1997

Experimental Mechanics

Self Cite

View full text Add to dashboard Cite

ABSTRACT--The fracture process zone (FPZ) ahead of a crack tip in concrete and mortar beams subjected to threepoint bending was studied using moir6 interferometry, A large FPZ can occur in concrete before the external load reaches its maximum value. Comparing the experimental results between concrete and mortar suggests that the aggregate contributes to the formation of the large FPZ in concrete. The formation of this large FPZ makes concrete less brittle than mortar. ]he effect of the FPZ on the fracture property, such as stress intensity factor, is investigated by combining moir6 interferometry measured displacements with the smoothing FEM method. The study shows that a large FPZ significantly affects the value of the stress intensity factor.

show abstract

“…Also, the value of the smoothing parameter e was determined in each case according to the approach suggested in Ref. 31. Representative values of e used here range from 1.0e-5 to 1.0e-4.…”

Section: Resultsmentioning

confidence: 99%

Fracture process zone analysis of concrete using moiré interferometry

Feng

Rowlands

1997

Experimental Mechanics

Self Cite

View full text Add to dashboard Cite

show abstract

“…An important case is the application of the extremely popular in structural analysis finite element method. It is widely used for the separation of principal stresses in photoelasticity (see (2),(3», but also for modelling of the derivatives field in moire and holographic interferometry (16). The finite element analysis programs are easily available.…”

Section: Identification Algorithl'1smentioning

confidence: 99%

Digital Image Processing in Experimental Mechanics

Pietrzyk

1986

Experimental Stress Analysis

View full text Add to dashboard Cite

“…This procedure includes four parts: a cluster of positive definite functions [23,25], a shape function matrix [26,27], a smoothing coefficient [28,29], and strain accumulation with staged construction and impoundment. These parts will be briefly introduced in this section.…”

Section: The Meshless Smoothing Methods For Displacement and Strain Anmentioning

confidence: 99%

“…First, a cluster of positive definite functions ( , ) [23,25] is introduced. The approximation function that minimizes the function ( , ) is the smooth displacement field.…”

Section: The Cluster Of Positive Definitementioning

confidence: 99%

“…In global smoothing methods, all noisy displacements are considered as a whole and fitted by piecewise interconnecting basis functions. Finite element-based (FE-based) smoothing methods, which are global smoothing methods, are effective noncontact methods of strain field measurement in experimental mechanics [22,23]. This approach employs a finite element framework to establish a global description of the displacement field and determines the displacements at nodes.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Strain Analysis of the Nuozhadu High Rockfill Dam during Initial Impoundment

Chi

2018

Mathematical Problems in Engineering

View full text Add to dashboard Cite

The safety of rockfill dams during initial impoundment has always been an issue of interest for regulatory agencies. Specifically, it is necessary to identify potential tensile strain zones and shear strain concentration zones in which cracks may form. In this paper, a meshless smoothing method is proposed to construct the strain field of a prototype dam based on monitoring displacement data. For verification, this method is applied to calculate the strain field of the Nuozhadu core wall rockfill dam. The results show that the proposed method can provide regulatory agencies with an effective tool for dam inspection during initial impoundment.

show abstract

Smooth spline-like finite-element differentiation of full-field experimental data over arbitrary geometry

Cited by 61 publications

References 20 publications

Fracture process zone analysis of concrete using moiré interferometry

Fracture process zone analysis of concrete using moiré interferometry

Digital Image Processing in Experimental Mechanics

Strain Analysis of the Nuozhadu High Rockfill Dam during Initial Impoundment

Contact Info

Product

Resources

About