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  • 1
    Electronic Resource
    Electronic Resource
    Recovery of Rare Earths from Used Polishes by Chemical Vapor Transport Process (1999)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 315-317 (July 1999), p. 297-305 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/04/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.315-317.297.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Measurement of Stress Intensity Factors of a Mixed-Mode Interface Crack by a Speckle Photography (1997)
    Springer
    Optical review 4 (1997), S. 253-260 
    Details
    ISSN: 1349-9432
    Keywords: speckle photography ; Young’s fringe ; two-dimensional Fourier transform ; finite element method ; stress intensity factor ; interface crack ; mixed mode ; displacement extrapolation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The image-processing system based on a two-dimensional Fourier transform is presented for the analysis of Young’s fringes pattern created from a double-exposure speckle photograph. The fringe spacing and orientation are determined using only one Young’s fringes pattern without any other diffraction halo patterns. The stress-intensity factors of a mixed-mode interface crack were measured by speckle photography. A compact normal and shear specimen with an interface crack was employed. This specimen enables us to carry out the experiment under various kinds of mixed-mode loading. A steel and an epoxy resin were used as dissimilar materials. The displacement along the crack lines at the free surface was measured by speckle photography. The K1 and K11 values were determined by a least squares method using displacement data along the crack lines. Three-dimensional finite element analysis was carried out on the same specimen. An accuracy of stress intensity factors obtained by the speckle photography was discussed by comparison of results obtained by the finite element analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s10043-997-0253-4
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  • 3
    Electronic Resource
    Electronic Resource
    Application of the Three-Dimensional Local Hybrid Method to the Structure with a SurfaceCrack Subjected to Bending Load (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 345-346 (Aug. 2007), p. 469-472 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: We developed the 3-D local hybrid method to evaluate the 3-D stress field inside thespecimen from displacement data on the free surface obtained from the 2-D intelligent hybridmethod. When a uniform load was applied to the structure with a surface crack, high accuracy wasalready acquired in stress analyses. The 3-D local hybrid method was anew applied to a structurewith a surface crack which is subjected to bending load. It is expected that the accuracy depends onlocal model size. In this study, the width, the thickness and the height of the local model werechanged widely, and analyses were carried out. Then the size of the local model necessary for theanalyses was examined. Assessment of analyses was performed by comparing J integral value of awhole model and a local model
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.345-346.469.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Elastic-Plastic Stress Analyses by Digital Image Correlation and Nonlinear Hybrid Method (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Applied mechanics and materials Vol. 3-4 (Aug. 2006), p. 39-46 
    Details
    ISSN: 1662-7482
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In previous studies, the elastic stress field near the crack tip was investigated by digital image correlation and the 2-D intelligent hybrid method. In this study, the 2-D nonlinear hybrid method was developed to analyze the elastic-plastic singular stress field near the crack tip from the displacement data obtained by digital image correlation. Then, the 2-D nonlinear hybrid method was carried out to evaluate stress, strain and J integral. The 3-D elastic-plastic finite element method was conducted on the same specimen as the experiment, and the validity of this approach was discussed from the comparison of the experiment and 3-D finite element method
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMM.3-4.39.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Examination of the Optimal Local Model Size in the Three-Dimensional Local Hybrid Method (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 326-328 (Dec. 2006), p. 991-994 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The interior stress field of the surface crack specimen subjected to a uniform tensile loadhas been successfully analyzed by the 3-D local hybrid method. In this study, it was examinedwhether the 3-D local hybrid method was applicable to the specimen subjected to the bending load.It has been understood that the decision of the optimal size of the local model is indispensable in theimprovement of accuracy from the previous research. Then, the width and thickness of the localmodel were changed widely, and analyses were carried out to find the optimal hybrid local modelsize. Moreover, it was examined how to decide the optimal size of the hybrid local model withvarious crack length and aspect ratio of the specimen. The optimal size of the hybrid local modelwas examined from the comparison with the J integral of the whole model
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.326-328.991.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of the Frequency of the Cyclic Load to the Inverse Analyses of the Heat Conduction in Infrared Thermography (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 326-328 (Dec. 2006), p. 1137-1140 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Influence of the frequency to the temperature image obtained by an infraredthermography was investigated using specimens of three kinds of materials at four kinds offrequencies of the cyclic load. Then, the infrared hybrid method was developed to separateindividual stress components. However, the influence of heat conduction is inevitable in the infraredstress measurement method. Therefore, an error arises in the infrared hybrid analysis. Then, thesystem which corrects the error by the inverse analysis was developed. Thereby, the accuracy of thestress intensity factor was able to be raised. Furthermore, the accuracy of hybrid methodconsidering to heat conduction was discussed in comparison with the 3-D finite element analysisand 2-D hybrid method
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.326-328.1137.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    The Effect of the Costal Vein Configuration of the Wings of a Dragonfly (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 326-328 (Dec. 2006), p. 819-822 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In generally, it is known that structures of living thing are optimized. The wings of adragonfly are thin and light. Although it is having the structure of bearing the load produced in thecase of an advanced flight such as “Flapping flight”, “Glide”, and “Hovering”. The wings of adragonfly are made by veins and membranes. In addition, the wings of a dragonfly have somecharacteristic structures, such as “Nodus”. Thus, the wings of dragonfly have many complicatedstructures. The configuration of costal vein of the wings is different from them of other insects. So,we paid attention to the configuration of costal vein of the wings. Therefore, in this study, weresearched about the effect of costal vein. As a result, it was showed that the configuration of costalvein became bending and torsional deformation small. In addition, it was showed that theconfiguration of costal vein related to nodus. In this study, several 3-D models of the dragonfly’swing were made and calculated by the 3-D finite element method
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.326-328.819.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Examination of the Optimal Local Model Size of Structure with a Surface Crack in the 3-D Local Hybrid Method (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 33-37 (Mar. 2008), p. 73-78 
    Details
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: We developed the 3-D local hybrid method to evaluate the 3-D stress field inside thespecimen from displacement data on the free surface obtained from the 2-D intelligent hybrid method.When a uniform load was applied to the structure with a surface crack, high accuracy was alreadyacquired in stress analyses. The 3-D local hybrid method was newly applied to structure with asurface crack which is subjected to bending load. It is expected that the accuracy depends on localmodel size. In this study, the width, the thickness and the height of the local model were changedwidely, and analyses were carried out. Then the size of the local model necessary for the analyses wasexamined. Assessment of analyses was performed by comparing J integral value of a full model andthe local model
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.33-37.73.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Influence of the Thickness of the Specimen in the Infrared Hybrid Method in Consideration of Heat Conduction (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 321-323 (Oct. 2006), p. 841-844 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The thickness dependency of the temperature image obtained by an infraredthermography was investigated using specimens with three kinds of materials and four kinds of thethickness of the specimen. Then, the infrared hybrid method was developed to separate individualstress components. However, it had the influence by heat conduction in the infrared stressmeasuring method. Therefore, an error will occur in the infrared hybrid analysis. Then, the systemwhich corrected the error by the inverse analysis was developed. Thereby, the accuracy of the stressintensity factor was able to be raised. Furthermore, the accuracy of hybrid method considering toheat conduction was discussed in comparison with the 3-D finite-element analysis and 2-D hybridmethod
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.321-323.841.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Examination of Accuracy of the Singular Stress Field Near a Crack-Tip by Digital Image Correlation (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 321-323 (Oct. 2006), p. 32-37 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Displacements obtained experimentally normally are including errors that make itimpossible to extract stresses strains with high accuracy using the raw displacement data. In theinfinitesimal deformation within the elastic region of a steel or an aluminum alloy, the quantity ofdisplacement is less than 1 pixel, and analysis accuracy deteriorates. We have developed a systemwhich employs the 2-D intelligent hybrid method and can analyze the displacement more exactly inthe sub-pixel field. By using the Newton-Raphson method in conjunction with 2nd orderdeformation gradients, it is demonstrated that this method can accurately extract stress intensityfactors from a set of measured displacements
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.321-323.32.pdf
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