Experimental Study on GFRP Surface Cracks Detection Using Truncated-Correlation Photothermal Coherence Tomography

2018 ◽  
Vol 39 (4) ◽  
Author(s):  
Fei Wang ◽  
Junyan Liu ◽  
Oliullah Mohummad ◽  
Yang Wang
Keyword(s):  
Experimental Study ◽  
Surface Cracks

scholarly journals Eddy Current Probe Configuration for Full Rail Top Surface Inspection

2021 ◽  
Vol 20 (2) ◽  
pp. 65-72
Author(s):  
Anouaressadate Aouf ◽  
Tarik Bouchala ◽  
Abdelhak Abdou ◽  
Bachir Abdelhadi
Keyword(s):  
Experimental Study ◽  
Eddy Current ◽  
Surface Inspection ◽  
Surface Cracks ◽  
Multisensor System ◽  
Rail Head ◽  
Head Surface ◽  
Single Sensor ◽  
Specific Configuration

In this paper, we have carried out an experimental study of the detection of top rail surface cracks. Firstly, we have highlighted the inability to inspect the entire rail head surface by a single sensor with a single scan. To overcome this inspection inability, we have proposed a multisensor system composed of three differential probes arranged within a specific configuration. The yielded results showed the efficiency and the robustness of the proposed configuration in the detection of cracks regardless its size, orientation and location.

Theoretical and experimental study of the healing of surface cracks using induction heating

2010 ◽  
Vol 1 (4) ◽  
pp. 353-358
Author(s):  
A. V. Dimaki ◽  
A. G. Mel’nikov ◽  
V. S. Pleshanov ◽  
O. V. Sizova
Keyword(s):  
Experimental Study ◽  
Induction Heating ◽  
Surface Cracks

Experimental Study on Fracture Behavior of Jointed Rock with Filled Crack in Uniaxial Compression

2011 ◽  
Vol 243-249 ◽  
pp. 2439-2442
Author(s):  
Ming Tian Li ◽  
Shu Cai Li ◽  
Dong Liang Shao
Keyword(s):  
Experimental Study ◽  
Thin Plate ◽  
Surface Crack ◽  
Fracture Behavior ◽  
Jointed Rock ◽  
Thin Plates ◽  
Surface Cracks ◽  
Rock Masses ◽  
Jointed Rock Masses ◽  
Made In

The influences of the ways in which the surface cracks were made and fillings in the surface cracks on the fracture behavior of the jointed rock masses were studied by a number of experiments. In the experiments the surface cracks were made in different methods such as placing polyester and aluminum thin plate, cutting. The experiment results show that the surface crack made by placing polyester thin plates and cutting may well simulate the natural cracks in jointed rock masses, but the specimens can’t initiate and fracture through the surface cracks formed by placing aluminum thin plate. In order to study the influences of the fillings in the cracks on the fracture behavior of the jointed rock masses polyester and aluminum thin plates were placed in the surface cracks to simulate different fillings. Compare with the surface crack without fillings those with fillings initiated and coalescence at a higher load. However the influences of fillings on the crack growth were very complex, which required to be studied further.

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

An Experimental Study of Some Properties of Stuttered Words

1962 ◽  
Vol 5 (4) ◽  
pp. 387-394 ◽  
Author(s):  
Bruce Quarrington ◽  
Jerome Conway ◽  
Nathan Siegel
Keyword(s):  
Experimental Study
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