A simple method for measuring local buckling of thin plates

1988 ◽  
Vol 28 (1) ◽  
pp. 20-23 ◽  
Author(s):  
Z. T. Sang ◽  
K. C. Chang ◽  
G. C. Lee
Keyword(s):  
Local Buckling ◽  
Thin Plates ◽  
Simple Method

The Loss of Local Stability of Thin-Walled Steel Profiles

2014 ◽  
Vol 633-634 ◽  
pp. 1052-1057 ◽  
Author(s):  
Darya Trubina ◽  
Dzhamal Abdulaev ◽  
Egor Pichugin ◽  
Marsel Garifullin
Keyword(s):  
Bearing Capacity ◽  
Local Stability ◽  
Complex Shape ◽  
Local Buckling ◽  
Design Stage ◽  
Simple Method ◽  
General Stability ◽  
Thin Walled ◽  
Potential Loss

Most methods for calculating bearing capacity profiles section of complex shape local buckling (LPA) are ignored. The problem of LPA rod is reduced to the problem of overall sustainability. At the design stage constructions of thin-walled beams, it is important to have a simple method for estimating the bearing capacity and the potential loss of local and general stability of the structure.

scholarly journals Local Buckling Coefficient Calculation Method of Thin Plates with Round Holes

ce/papers ◽  
2019 ◽  
Vol 3 (3-4) ◽  
pp. 841-846
Author(s):  
Šarūnas Kelpša ◽  
Simo Peltonen
Keyword(s):  
Calculation Method ◽  
Local Buckling ◽  
Thin Plates ◽  
Buckling Coefficient

scholarly journals Local and post local buckling of stepped and perforated thin plates

2005 ◽  
Vol 29 (7) ◽  
pp. 633-652 ◽  
Author(s):  
M. Azhari ◽  
A.R. Shahidi ◽  
M.M. Saadatpour
Keyword(s):  
Local Buckling ◽  
Thin Plates

scholarly journals Identification of Delamination in Anisotropic Laminated Plate

2009 ◽  
Vol 79-82 ◽  
pp. 1181-1184
Author(s):  
Chao Du ◽  
Qing Qing Ni ◽  
Toshiaki Natsuki
Keyword(s):  
Wave Propagation ◽  
Lamb Waves ◽  
High Sensitivity ◽  
Laminated Plates ◽  
Thin Plates ◽  
Simple Method ◽  
Small Surface ◽  
Actual Length ◽  
Surface Displacements ◽  
Function Generators

The energy released from damages may give rise to small surface displacements and cause transient elastic waves in materials. Wave propagation of thin plates usually takes the form of lamb waves, and the modes of the lowest symmetric (S0) and anti-symmetric (A0) lamb waves are called the extensional and the flexural modes, respectively. In this study, a formulation, including the effect of shear deformation and rotary inertia, was derived to valuate the velocity of plate waves. The characteristics of plate wave propagation in thin laminated plates were investigated. Acoustic emission (AE) signals were generated by function generators and lead breaks, and propagated in laminated plates. These waves would be detected by broadband AE sensors because of their high sensitivity. With wavelet transform, AE waves were analyzed and the wave velocities of A0 and S0 modes were exactly calculated. Moreover, a simple method was presented to evaluate delamination in laminated plates. The length of delamination was predicted, and agreed well with the actual length.

Effective width method to account for the local buckling of steel thin plates at elevated temperatures

2014 ◽  
Vol 84 ◽  
pp. 134-149 ◽  
Author(s):  
Carlos Couto ◽  
Paulo Vila Real ◽  
Nuno Lopes ◽  
Bin Zhao
Keyword(s):  
Elevated Temperatures ◽  
Local Buckling ◽  
Thin Plates ◽  
Effective Width

scholarly journals Experimental Study on Reinforced Concrete Column Incased in Prefabricated Permanent Thin-Walled Steel Form

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Jae Yuel Oh ◽  
Deuck Hang Lee ◽  
Jungmin Lee ◽  
Kang Su Kim ◽  
Sung-Bae Kim
Keyword(s):  
Reinforced Concrete ◽  
Local Buckling ◽  
Initial Imperfection ◽  
Thin Plates ◽  
Compression Tests ◽  
Reinforced Concrete Column ◽  
Conventional Concrete ◽  
Rc Structures ◽  
Accidental Eccentricity ◽  
Thin Walled

Conventional construction methods of reinforced concrete (RC) structures generally require a long construction period and high costs due to many on-site temporary form works. In this study, a prefabricated permanent thin-walled steel form integrated with reinforcement cage (PPSFRC) was developed, and it makes for a fast-built construction by reducing the temporary form works. Axial compression tests were conducted on a total of 9 test specimens to investigate the structural performances of the newly developed columns. The proposed column construction method utilized relatively thinner steel plates compared to conventional concrete-filled tube (CFT) columns, but it was designed to have sufficient resistance performances against the lateral pressure of fresh concrete and to prevent the buckling of the thin plates by utilizing the steel angles and channel stiffeners prefabricated in the permanent thin-walled steel form. The experimental results showed that the column specimens fabricated by the PPSFRC method had better local buckling resistance and behaved in a more ductile manner compared to the conventional CFT columns. In addition, the axial strengths of the test specimens were compared with those estimated by design provisions, and the flexural moments induced by initial imperfection or accidental eccentricity of axial loads were also discussed in detail.

A simple way for producing holographic filters suitable for image improvement

1978 ◽  
Vol 36 (1) ◽  
pp. 226-227
Author(s):  
K.-H. Herrmann ◽  
E. Reuber ◽  
P. Schiske
Keyword(s):  
Transfer Functions ◽  
Diffraction Order ◽  
Lateral Position ◽  
Simple Method ◽  
Spatial Frequencies ◽  
Resolution Electron ◽  
Wiener Filters ◽  
Image Improvement ◽  
Optical Reconstruction ◽  
Set Up

Aposteriori deblurring of high resolution electron micrographs of weak phase objects can be performed by holographic filters [1,2] which are arranged in the Fourier domain of a light-optical reconstruction set-up. According to the diffraction efficiency and the lateral position of the grating structure, the filters permit adjustment of the amplitudes and phases of the spatial frequencies in the image which is obtained in the first diffraction order.In the case of bright field imaging with axial illumination, the Contrast Transfer Functions (CTF) are oscillating, but real. For different imageforming conditions and several signal-to-noise ratios an extensive set of Wiener-filters should be available. A simple method of producing such filters by only photographic and mechanical means will be described here.A transparent master grating with 6.25 lines/mm and 160 mm diameter was produced by a high precision computer plotter. It is photographed through a rotating mask, plotted by a standard plotter.

Rotary Beveling for In Situ Thin-Section Microscopy of Cell Cultures

1981 ◽  
Vol 39 ◽  
pp. 550-551
Author(s):  
Dean A. Handley ◽  
Jack T. Alexander ◽  
Shu Chien
Keyword(s):  
Cell Growth ◽  
Cell Cultures ◽  
Molecular Interactions ◽  
Convenient Method ◽  
Petri Dish ◽  
Simple Method ◽  
Thin Section Microscopy ◽  
Thin Sectioning ◽  
Organic Fluids

In situ preparation of cell cultures for ultrastructural investigations is a convenient method by which fixation, dehydration and embedment are carried out in the culture petri dish. The in situ method offers the advantage of preserving the native orientation of cell-cell interactions, junctional regions and overlapping configurations. In order to section after embedment, the petri dish is usually separated from the polymerized resin by either differential cryo-contraction or solvation in organic fluids. The remaining resin block must be re-embedded before sectioning. Although removal of the petri dish may not disrupt the native cellular geometry, it does sacrifice what is now recognized as an important characteristic of cell growth: cell-substratum molecular interactions. To preserve the topographic cell-substratum relationship, we developed a simple method of tapered rotary beveling to reduce the petri dish thickness to a dimension suitable for direct thin sectioning.

Development of a simple method for the determination of single nucleotide polymorphisms

2010 ◽  
Vol 34 (8) ◽  
pp. S75-S75
Author(s):  
Weifeng Zhu ◽  
Zhuoqi Liu ◽  
Daya Luo ◽  
Xinyao Wu ◽  
Fusheng Wan
Keyword(s):  
Single Nucleotide Polymorphisms ◽  
Nucleotide Polymorphisms ◽  
Simple Method ◽  
Single Nucleotide
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