Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Photoacoustic effect in stressed elastic solids (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 88 (2000), S. 2948-2955 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A multimode approach based on the simultaneous application of several photothermal and photoacoustic methods is proposed for the study of thermal and thermoelastic effects in solids with residual stress. It includes photoacoustic gas microphone, photodeflection, photoreflectance and photoacoustic piezoelectric microscopy methods. This approach provides complementary information about thermal, elastic and thermoelastic properties of samples with residual stress. Some experimental results obtained within the framework of this approach for Vickers indentation zones in silicon nitride ceramic are presented. The model of the photoacoustic thermoelastic effect in solids with residual stress is proposed. It is based on the modified Murnaghan model of nonlinear elastic bodies which takes into account a possible dependence of the thermoelastic constant on stress. It is demonstrated that the developed theoretical model for the photoacoustic piezoelectric effect agrees qualitatively with the available experimental data. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1287526
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Thermal wave measurement of ion implanted semiconductors in the mirage effect geometry (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 61 (1992), S. 569-571 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effect of ion implant processes on an amplitude and phase of thermal wave signals from semiconductors was analyzed. It is experimentally shown for InP and GaAs that the ion implantation results in a considerable increase of the signal amplitude when using Nd:YAG pump laser at 1.06 μm wavelength. It was found out that the nature of spatial oscillations observed in a signal behavior is forced by pump radiation interference due to the internal reflection from a rear sample surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.107839
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Investigation of the influence of residual stresses on the thermophysical and thermoelastic properties of silicon nitride ceramic by photothermal and photoacoustic methods (1998)
    Springer
    Technical physics letters 24 (1998), S. 846-848 
    Details
    ISSN: 1090-6533
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Photodeflection and photoreflection microscopy have been used to show that residual stresses do not influence the thermophysical parameters of silicon nitride ceramic. It was demonstrated that photoreflection microscopy can provide information on the thermophysical properties of ceramics at the level of individual grains. It was established that the theory of photoacoustic signal formation with a piezoelectric recording method based on the Murnaghan model with allowance for the stress dependence of the thermoelastic coupling coefficient can qualitatively explain these experimental data and can be used to estimate the thermoelastic parameters of the ceramic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1262288
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Photodeflection and photoacoustic microscopy of cracks and residual stresses induced by Vickers indentation in silicon nitride ceramic (1997)
    Springer
    Technical physics letters 23 (1997), S. 188-190 
    Details
    ISSN: 1090-6533
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The feasibility of using photodeflection and photoacoustic microscopy to detect subsurface lateral and vertical cracks, as well as residual internal stresses induced by Vickers indentation in silicon nitride ceramic has been investigated. It is shown that the normal component of the photodeflection signal can be used to detect lateral subsurface cracks and the tangential component to detect vertical cracks. It is established that the sensitivity of the photoacoustic method to residual internal stresses arises from the dependence of the elastic parameters or the coefficient of thermal expansion of the silicon nitride ceramic on the internal stresses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1261880
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Theoretical and experimental study of photoacoustic and electron-acoustic effects in solids with internal stresses (2000)
    Springer
    Technical physics 45 (2000), S. 1025-1031 
    Details
    ISSN: 1090-6525
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Results of a theoretical and experimental study of photoacoustic and electron-acoustic effects in solids with internal stresses are presented. In the theoretical part, an approach to describing these effects on the basis of a generalized concept of thermoelastic energy of a solid with internal stresses and the nonlinear Murnaghan model for the elastic part of its energy is developed. The results of studying objects with internal stresses in the context of an integrated experimental approach incorporating the techniques of photodeflection and thermal-wave and photoacoustic microscopy with piezoelectric recording of the signal are reported. It is shown that a similar approach allows one to detect the arrangement of the strained surface areas of the object and to evaluate the extent to which its thermal and thermoelastic parameters are affected by internal stresses. The results of applying this approach to a study of Vickers indentations in silicon nitride ceramics are reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1307012
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...